Management Software ® AT-S25 ◆ User’s Guide AT-8316F/MT, AT-8316F/VF, AT-8316F/SC, AND AT-8324 FAST ETHERNET SWITCHES VERSION 2.0.
Copyright 2003 Allied Telesyn, Inc. 960 Stewart Drive Suite B, Sunnyvale, CA 94085 USA All rights reserved. No part of this publication may be reproduced without prior written permission from Allied Telesyn, Inc. Microsoft is a registered trademark of Microsoft Corporation, Netscape Navigator is a registered trademark of Netscape Communications Corporation.
Table of Contents List of Figures ........................................................................................................................................................................................................ 8 Preface ....................................................................................................................................................................................................................11 How This Guide is Organized .......................
Table of Contents Chapter 3 Basic Switch Parameters ................................................................................................................................................................................ 41 When Does a Switch Need an IP Address? ................................................................................................................................................. 42 How Do You Assign an IP Address?...........................................................
AT-S25 Management Software User’s Guide Configuring RSTP .............................................................................................................................................................................................. 109 Configuring a Bridge’s RSTP Settings................................................................................................................................................ 109 Configuring a Port’s RSTP Settings .......................................
Table of Contents Chapter 13 Ethernet Statistics ...........................................................................................................................................................................................174 Displaying Port Statistics ................................................................................................................................................................................175 Displaying Switch Statistics ...................................
AT-S25 Management Software User’s Guide Chapter 21 STP and RSTP .................................................................................................................................................................................................... 228 Enabling or Disabling STP or RSTP .............................................................................................................................................................. 229 STP and RSTP Parameters .........................
List of Figures Figure 1: Figure 2: Figure 3: Figure 4: Figure 5: Figure 6: Figure 7: Figure 8: Figure 9: Figure 10: Figure 11: Figure 12: Figure 13: Figure 14: Figure 15: Figure 16: Figure 17: Figure 18: Figure 19: Figure 20: Figure 21: Figure 22: Figure 23: Figure 24: Figure 25: Figure 26: Figure 27: Figure 28: Figure 29: Figure 30: Figure 31: Figure 32: Figure 33: Figure 34: Figure 35: Figure 36: Figure 37: Figure 38: System Booting Window ...............................................................
AT-S25 Management Software User’s Guide Figure 39: Figure 40: Figure 41: Figure 42: Figure 43: Figure 44: Figure 45: Figure 46: Figure 47: Figure 48: Figure 49: Figure 50: Figure 51: Figure 52: Figure 53: Figure 54: Figure 55: Figure 56: Figure 57: Figure 58: Figure 59: Figure 60: Figure 61: Figure 62: Figure 63: Figure 64: Figure 65: Figure 66: Figure 67: Figure 68: Figure 69: Figure 70: Figure 71: Figure 72: Figure 73: Figure 74: Figure 75: Figure 76: Figure 77: Figure 78: Figure 79: Figure 80: Figure 81
List of Figures Figure 94: Figure 95: Figure 96: Figure 97: Figure 98: Figure 99: Figure 100: Figure 101: Figure 102: Figure 103: Figure 104: Figure 105: Figure 106: Figure 107: Figure 108: Figure 109: Figure 110: Figure 111: Figure 112: 10 Monitoring - RSTP Settings Window ................................................................................................................................. 242 Configuration - VLAN Window ........................................................................
Preface This guide contains instructions on how to configure an AT-8316F or an AT-8324 Fast Ethernet Switch using the AT-S25 management software.
Preface How This Guide is Organized This manual is divided into three sections. Section I: Overview This section contains just one chapter. It reviews the different ways that you could access the AT-S25 management software on a switch. Section II: Local and Telnet Management The chapters in this section explain how to manage a switch from a local management interface or a Telnet management interface.
AT-S25 Management Software User’s Guide Document Conventions This document uses the following conventions: Note Notes provide additional information. Warning Warnings inform you that performing or omitting a specific action may result in bodily injury. Caution Cautions inform you that performing or omitting a specific action may result in equipment damage or loss of data.
Preface Where to Find Web-based Guides The installation and user guides for all Allied Telesyn products are available in Portable Document Format (PDF) on our web site at www.alliedtelesyn.com. You could view the documents on-line or download them onto a local workstation or server.
AT-S25 Management Software User’s Guide Contacting Allied Telesyn To contact Technical Support by phone, find your country or region in the table below: United States, Canada, Mexico, Central America, South America Tel: 1 800 428 4835 (option 4) Germany, Switzerland, Austria, Eastern Europe Tel: (+49) 30-435-900-126 United Kingdom, Denmark, Norway, Sweden, Finland (+44) 1-235-442560 France, Belgium, Luxembourg, The Netherlands, Middle East, Africa (+33) 1-60-92-15-25 Singapore, Taiwan, Thailand, Malays
Preface Management Software Updates New releases of management software for our managed products are available from our web site at www.alliedtelesyn.com and our FTP server at ftp.alliedtelesyn.com. To use the FTP server, enter ‘anonymous’ for the user name when you log in and your e-mail address for the password.
AT-S25 Management Software User’s Guide Upgrading AT-S25 Version 1.5.6.2 or An Earlier Version to Version 2.0.0 This section contains the procedures for upgrading an image file to ATS25 Version 2.0.0. Caution The configuration file in the AT-S25 Version 1.5.6.2 or earlier version is not compatible with the AT-S25 Version 2.0.0; therefore, the user needs to save the configuration settings such as the static MAC addresses, VLAN settings, port configuration settings, etc. before downloading Version 2.0.0.
Preface TFTP Guidelines In the legacy code of AT-S25 Version 1.5.6.2 or an earlier version and Version 1.5.6.3, the TFTP server software runs on the switch, so the user has to use the Put command of the TFTP client software on a PC to download an image file to the switch. However, AT-S25 Version 2.0.0 is designed to use the TFTP client software on the switch. As a result, the user must run TFTP server on the PC to download the image file to the switch when Version 2.0.0 is the current software.
AT-S25 Management Software User’s Guide Using TFTP to Download the AT-S25 Version 2.0.0 Image File to the Master Switch of the Stack In a network consisting of several AT-8316F or AT-8324 switches, you could simplify the upgrade procedure with the two-step process below: ❑ First, download Version 1.5.6.3 image file “ATS25_V1563.IMG” to the Master switch of the stack. ❑ Secondly, download Version 2.0.0 image file “ATS25_V200.IMG” to the Master switch of the stack.
Preface Note The ATS25_V1563.IMG file is not required when using the XModem method. To download the AT-S25 Version 2.0.0 image file “ATS25_V200.IMG” using the XModem method, perform the following procedure: 1. In HyperTerminal, verify that your current port settings are set as follows: - Bits per second = “9600” - Data bits = “8” - Parity = “None” - Stop bits = “1” - Flow control = “None” 2. Start the AT-S25 management software. The System Booting window as shown in Figure 1 is running.
AT-S25 Management Software User’s Guide 3. Immediately hit any key to run the system diagnostics. The ATI Diagnostics menu in Figure 2 is displayed. Figure 2 ATI Diagnostics Menu Note The current terminal speed is 9600 baud. For faster transfer, select the highest speed available. 4. Type Z to change the terminal speed. 5. Type 5 to select the new speed at 115200. 6. From the local management interface menu, select Disconnect from the Call menu or click the Disconnect icon .
Preface 7. From the local management interface menu bar, select Properties from the File menu or click the Properties icon . The AT-S25 Properties window in Figure 3 is displayed. Figure 3 AT-S25 Properties Window 8. Click the Configure button. The Properties window of the connecting COM in Figure 4 is displayed. Figure 4 COM1 Properties Window 9. From the Bits per second pull-down list, select 115200; and click OK. You are returned to the AT-S25 Properties. 10. In the AT-S25 Properties window, click OK.
AT-S25 Management Software User’s Guide 11. In the HypterTerminal window, hit any key to activate the ATI Diagnostics menu. 12. In the ATI Diagnostics menu, type X to select XMODEM download updated System Software, and press the Enter key. The following prompt is displaying, indicating that the system is ready for the download: The System is now ready for download. Please start your XMODEM transfer. 13. From the HyperTerminal main window, select the Transfer menu. Then select Send File...
Preface The software immediately begins to download onto the switch. The Xmodem File Send window in Figure 7 displays current status of the software download. The download process take a couple minutes to complete. Figure 7 XModem File Send Window Once the download process is completed, the following prompt is displayed: XMODEM transfer has successfully completed. Now writing to Flash PROM. Please wait for FLASH writes to complete. This may take up to 1 minute. Do not reset, do not remove power.
Section I Overview The chapter in this section provides a brief overview of the AT-S25 management software. It explains some of the functions that you could perform with the management software and reviews the different methods for accessing the AT-S25 software on an AT-8316F or an AT8324 Fast Ethernet Switch.
Chapter 1 Overview The AT-S25 management software is intended for the AT-8316F and AT8324 Fast Ethernet Switches. The software is used to monitor and adjust a switch’s operating parameters.
AT-S25 Management Software User’s Guide Note The default settings for the management software can be found in Appendix A, AT-S25 Default Settings on page 273. To actively manage a switch, such as to change or adjust the operating parameters, you must access the switch’s AT-S25 management software. The AT-S25 software has a menu interface that makes it very easy to use.
Section I: Overview Local Management Interface You establish a local management interface with an AT-8316F or an AT8324 Switch by connecting a terminal or a PC with a terminal emulator program to the RS-232 Terminal port on the front panel of the Master switch of the stack, using a straight-through RS-232 cable. This type of management interface is referred to as “local” because you must be physically close to the switch, such as in the wiring closet where the switch is located.
AT-S25 Management Software User’s Guide Telnet Management Interface Any management workstation on your network that has the Telnet application protocol can be used to manage an AT-8316F or an AT-8324 Switch. This type of management interface is referred to in this guide as a remote management interface because you do not have to be in the wiring closet where the switch you wish to manage is located. You could manage the switch from any workstation on the network that has the application protocol.
Section I: Overview Web Browser Management Interface You could also use a web browser to manage a switch. This too is referred to as remote management, just like a Telnet management interface. You could manage a switch from any workstation on your network that has a web browser. Note For instructions on starting this type of management interface, refer to Starting a Web Browser Interface on page 192.
AT-S25 Management Software User’s Guide SNMP Management Interface Another way to remotely manage the switch is with an SNMP management program. A familiarity with Management Information Base (MIB) objects is necessary for this type of management. The AT-S25 software supports the following MIBs: ❑ SNMP MIB-II (RFC 1213) ❑ Bridge MIB (RFC 1493) ❑ Interface Group MIB (RFC 1573) ❑ Ethernet MIB (RFC 1643) ❑ Remote Network MIB (RFC 1757) ❑ Allied Telesyn Managed Switch MIB (atiStackSwitch.
Section I: Overview Management Access Levels There are two levels of management access on an AT-8316F or an AT8324 Switch: ❑ Manager Access: When you log in as a Manager, you could view and configure all of a switch’s operating parameters. The username for Manager access is “manager” and the default password is “friend”. ❑ Operator Access: When you log in as an Operator, you could only view the operating parameters; you could not change any values.
Section II Local and Telnet Management Interfaces The chapters in this section explain how to manage an AT-8316F or an AT-8324 Switch from a local or Telnet management interface.
Chapter 2 Starting a Local or Telnet Management Interface This chapter contains the procedure for starting a local or Telnet management interface on an AT-8316F or an AT-8324 Switch.
AT-S25 Management Software User’s Guide Local Management Interface On the front panel of the switch is a port labelled RS-232 Terminal Port. You use this port to establish a local management interface with the switch’s AT-S25 management software. A local management interface is so named because you must be close to the switch, usually within a few meters, to start this type of management interface. This typically means that you must be in the wiring closet where the switch is located.
Section II: Local and Telnet Mangement The master switch is the switch assigned the Stack ID value of 1. For information on Stack ID switch settings, refer to the AT8316F/MT, AT-8316F/VF, AT-8316F/SC, and AT-8324 Installation Guide. Note Do not connect the terminal to the RS232 port on a slave switch. To start a local management interface on a stack, you must connect the terminal to the RS232 port on the master switch. 2.
AT-S25 Management Software User’s Guide The Main Menu window in Figure 9 is displayed. Figure 9 Main Menu To select a menu item, type the corresponding letter or number. Pressing the Esc key or typing the letter “R” in a submenu or window returns you to the previous menu. Quitting from a Local Interface To quit a local management interface, return to the Main Menu and type Q for Quit. Note You should always exit from a management interface when you are finished managing a switch.
Section II: Local and Telnet Mangement Selecting a Switch Module in the Stack Most of the procedures in this guide have you select the switch module in the stack on which you want to perform the procedure. For example, to display the status of the ports on the third switch module, you would perform the following procedure: 1. From the Main Menu, type M to select M - Select another module. The prompt message is displayed: Select Module ID: [1 to 8] -> 2.
AT-S25 Management Software User’s Guide Telnet Management Interface You could use the Telnet application protocol from a workstation on your network to manage an AT-8316F or an AT-8324 Switch. This type of management is referred to as remote management because you do not have to be physically close to the switch to start the interface, such as with a local management interface. Any workstation on your network that has the application protocol can be used to manage the switch.
Section II: Local and Telnet Mangement The Main Menu of a Telnet management interface is the same menu that you see in a local management interface, shown in Figure 9 on page 37. Nearly all the functions from a local management interface are available to you from a Telnet management interface. The menus also function the same. To make a selection, type its corresponding number or letter. To return to a previous menu, type R or press the Esc key.
Chapter 3 Basic Switch Parameters This chapter contains a variety of information and procedures. There is a discussion on when to assign an IP address to a switch and the different ways that you could go about it. There are also procedures for resetting the switch, activating the original switch default settings, and more.
Section II: Local and Telnet Mangement When Does a Switch Need an IP Address? If you wish to remotely manage an AT-8316F or an AT-8324 switch, you must assign it an IP address. The IP address is assigned to the Master switch and is shared by all the switches in a stack. When you assign a switch an IP address, you must also assign it a subnet mask. The switch uses the subnet mask to determine which portion of an IP address represents the network address and which the node address.
AT-S25 Management Software User’s Guide Configuring an IP Address and Switch Name The procedure in this section explains how to manually assign an IP address, subnet mask, and gateway address to the switch from a local or Telnet management interface. (If you wish the switch to obtain its IP configuration from a DHCP or BOOTP server on your network, go to the procedure Activating the BOOTP and DHCP Services on page 46.
Section II: Local and Telnet Mangement The parameters are described in the table below: PARAMETER 44 DESCRIPTION 1 - IP Address This parameter specifies the IP address of the switch. You must specify an IP address if you intend to remotely manage the switch using a Telnet utility, or an SNMP management program, or a Web browser interface. 2 - Subnet Mask This parameter specifies the subnet mask for the switch. You must specify a subnet mask if you assigned an IP address to the switch.
AT-S25 Management Software User’s Guide PARAMETER D - Downloads & Uploads Menu DESCRIPTION For information on this selection, refer to Chapter 15, File Downloads and Uploads on page 180. 3. After you have set the parameters, type S to select Save Configuration changes. Note A change to any of the parameters in this menu, including the IP address, subnet mask, or gateway address, are immediately activated on a switch.
Section II: Local and Telnet Mangement Activating the BOOTP and DHCP Services The BOOTP and DHCP application protocols were developed to simplify network management. They are used to automatically assign IP configuration information to the devices on your network, such as an IP address, subnet mask, and a default gateway address. An AT-8316F or AT-8324 Switch supports these protocols and can obtain its IP configuration information from a BOOTP or DHCP server on your network.
AT-S25 Management Software User’s Guide Note If you activated BOOTP/DHCP, the switch immediately begins to query the network for a BOOTP or DHCP server. The switch will continue to query the network for its IP configuration until it receives a response.
Section II: Local and Telnet Mangement Configuring the AT-S25 Software Security Features The AT-S25 software has several security features that can help prevent unauthorized individuals from changing the parameter settings of an AT-8316F or an AT-8324 Switch. The security features are: Manager and Operator Passwords - The management software has two standard, management login accounts: ❑ For Manager access, type manager as the user name. The default password is “friend”.
AT-S25 Management Software User’s Guide Configuring the Management Passwords There are two levels of management access on an AT-8316F or an AT8324 Switch: Manager and Operator. When you log in as a Manager, you could view and configure all of a switch’s operating parameters. When you log in as an Operator, you could only view the operating parameters; you could not change any values. You log in as a Manager or an Operator by entering the appropriate password when you start an AT-S25 management software.
Section II: Local and Telnet Mangement Note The password can be from 0 to 20 alphanumeric characters. The passwords are case sensitive. Note The two passwords should be different. If both passwords are the same, the management software will always assume that you wish to log in as Manager. Caution You should not use spaces or special characters, such as asterisks (*) and exclamation points (!), in a password if you will be managing the switch from a web browser.
AT-S25 Management Software User’s Guide Resetting a Switch To reset a switch, perform the following procedure: 1. From the Main Menu, type 4 to select Administration Menu. 2. From the Administration Menu, type 9 to select Reset Switch. The following prompt is displayed: Do you want to proceed with the switch reboot? [Yes/No] -> 3. Type Y to reset the switch or N to cancel this procedure. The switch reloads its operating system, a task requiring a minimum of 20 seconds to complete.
Section II: Local and Telnet Mangement Configuring SNMP Community Strings and Trap IP Addresses To configure the SNMP community strings for the switch and to assign up to four IP addresses of management stations to receive traps from the switch, perform the following procedure: 1. From the Main Menu, type 5 to select System Config Menu. The System Config Menu in Figure 12 is displayed. Figure 12 System Config Menu 2. From the System Config Menu, type A to select Advanced Configuration.
AT-S25 Management Software User’s Guide 3. From the Advanced Configuration window, type 2 to select SNMP Configuration. The SNMP Configuration menu in Figure 14 is displayed. Figure 14 SNMP Configuration Menu 4. Enter or modify the parameters as desired. To change a value, type its corresponding number and, when prompted, enter the new value.
Section II: Local and Telnet Mangement Pinging a Remote System You could instruct the switch to ping a remote device on your network. This procedure is useful in determining whether a valid link exists between the switch and another device. To ping a network device, perform the following procedure: 1. From the Main Menu, type 4 to select Administration Menu. 2. From the Administration Menu, type P to select Ping a Remote System. The following prompt is displayed: Please enter an IP address -> 3.
AT-S25 Management Software User’s Guide Returning the AT-S25 Software to the Factory Default Values The procedure in this section returns all AT-S25 software parameters to their default values. This procedure also deletes any VLANs that you have created on the switch. Note The AT-S25 software default values can be found in Appendix A, AT-S25 Default Settings on page 273. To return the AT-S25 management software to its default settings, perform the following procedure: 1.
Section II: Local and Telnet Mangement Caution If the switch is being managed remotely and its configuration has DHCP Enabled, this parameter will be set to Disabled after resetting the switch to Factory Defaults. This action will result in the loss of management until either the IP address is manually set or DHCP is enabled again via the serial port.
AT-S25 Management Software User’s Guide Viewing the AT-S25 Version Number and Basic Switch Information The procedure in this section displays the following switch information: ❑ AT-S25 Version Number ❑ Application Software Version ❑ Application Software Build Date ❑ MAC Address ❑ Stack Info Menu To display the information, type 8 to select Diagnostics Menu from the Main Menu. The Diagnostics Menu window in Figure 15 is displayed.
Chapter 4 Port Parameters The chapter contains procedures for viewing and changing the parameter settings for the individual ports on a switch.
AT-S25 Management Software User’s Guide Configuring Port Parameters To configure the parameter settings for a port on the switch, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. 2. From the Ports Menu, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 3. Enter the ID of the module you wish to select, and press the Enter key. 4.
Section II: Local and Telnet Mangement Note The example Port Configuration window in the figure above is for a 10/100 Mbps twisted pair port. The window for a fiber optic port will contain a subset of the parameters. 7. Enter or modify the parameters in the window as desired. Changes to the parameters take effect immediately on the switch. The parameters are described in the table below: PARAMETER DESCRIPTION 0 - Name The name of the selected port.
AT-S25 Management Software User’s Guide PARAMETER 3 - Negotiation DESCRIPTION Configures a port for Auto-Negotiation or to manually set a port’s speed and duplex mode. Possible settings for this parameter are: • Auto: Sets a port’s speed and duplex mode automatically. (default) • Manual: Set a port’s speed and duplex mode manually. If you select Auto, the switch will set both speed and duplex mode for the port automatically.
Section II: Local and Telnet Mangement PARAMETER B - Back Pressure DESCRIPTION Uses a special packet to halt the transmission of the JAM pattern if there is a pending packet for transmission while the port is transmitting the JAM pattern.
AT-S25 Management Software User’s Guide Displaying Port Status To display the status of the ports on the switch, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. The Ports Menu in Figure 17 is displayed. Figure 17 Ports Menu 2. From the Ports Menu window, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 3. Enter the ID of the module you wish to select, and press the Enter key.
Section II: Local and Telnet Mangement The Port Status window is displayed. Figure 18 is an example of the window. Figure 18 Port Status Window The information in this window is for viewing purposes only. The columns in the window are described in the table below: PARAMETER DESCRIPTION PortName/UplinkType PortName is the name of the port, and UplinkType is the type of the applique’ in the uplink slot (AT-A14, ATA15, AT-A17, AT-A18, or AT-A19). NOTE: The UplinkType only applies to the uplink ports.
AT-S25 Management Software User’s Guide PARAMETER Link DESCRIPTION The status of the link between the port and the end node connected to the port. Possible settings for this parameter are: • Up - indicates that a valid link exists between the port and the end node. • Down - indicates that the port and the end node have not established a valid link. Speed The operating speed of the port.
Chapter 5 Port Security This chapter contains the procedures for setting port security. The sections in this chapter include: ❑ Port Security Overview on page 67 ❑ Configuring Port Security on page 69 ❑ Configuring the Limited Security Mode on page 71 Note Port security can only be set through a local management interface, You could not set port security from a Telnet management interface.
AT-S25 Management Software User’s Guide Port Security Overview The port security feature can enhance the security of your network. You could use the feature to control the number of MAC addresses learned on the ports, and so control the number of network devices that can forward frames through the switch. There are four levels of port security. Only one security level can be active on a switch at a time. A - Automatic This operating mode disables port security.
Section II: Local and Telnet Mangement S - Secure This security level instructs the switch to forward frames based solely on static MAC addresses. When this security level is activated, the switch deletes all dynamic MAC addresses and disables the MAC Address Table so that no new addresses can be learned by the hardware. The switch also deletes any addresses in the static MAC Address Table.
AT-S25 Management Software User’s Guide Configuring Port Security Note Port security can only be set through a local management interface. If you change port security mode through Telnet, a warning message about the possible disconnection from a Telnet interface will display. To set a switch’s port security level, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. 2. From the Ports Menu, type 5 to select Port Security. The Port Security menu in Figure 19 is displayed.
Section II: Local and Telnet Mangement 6. Select the desired security level by typing the corresponding letter: ❑ To disable port security on the switch, type A to select Automatic mode. A switch operating in Automatic mode does not restrict the number of MAC addresses learned by the ports. The switch continues to learn addresses so long as there is available space in the MAC Address Table. This is the default setting.
AT-S25 Management Software User’s Guide Configuring the Limited Security Mode The Limited security mode lets you set a maximum number of dynamic MAC addresses each port on a switch can learn. When you activate this security level, the switch deletes all MAC addresses in the dynamic MAC Address Table and immediately begins to learn new addresses as frames are received on the ports.
Section II: Local and Telnet Mangement Figure 20 Port Security Limited-Mode Menu 5. From the Port Security Limited-Mode menu, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 6. Enter the ID of the module you wish to select, and press the Enter key. 7. From the Port Security Limited-Mode menu, type 2 to select Set MAC Threshold. The following prompt is displayed: Select Port Group ID [1 to 5] -> 8.
AT-S25 Management Software User’s Guide 12. Examine the MAC limits. Check to be sure that they are correct. If you assigned different values to different port groups, be sure that the different values apply to the correct ports. If necessary, repeat this procedure to change any MAC address limits. 13. Type U to update the changes.
Chapter 6 Port Trunking This chapter contains the procedures for creating and deleting port trunks.
AT-S25 Management Software User’s Guide Port Trunking Overview Port trunking is an economical way for you to increase the bandwidth between two switches. A port trunk is a group of 2 to 8 ports that have been grouped together to function as one logical path. A port trunk increases the bandwidth between switches and is useful in situations where a single physical data link between switches is insufficient to handle the traffic load.
Section II: Local and Telnet Mangement The ports on an AT-8324 Switches are divided into five groups, as illustrated in Figure 22.
AT-S25 Management Software User’s Guide The ports of a port trunk must be members of the same group. You could not use ports from different groups. For example, you could use ports 4 and 5 on an AT-8324 Switch as one port trunk, since the ports are members of the same group. However, ports 7, 8, 9, and 10 cannot be combined to form a port trunk on an AT-8324 Switch because they belong to different groups.
Section II: Local and Telnet Mangement Guideline 8: Creating Port Trunks on Expansion Modules The ports on some expansion modules can be grouped together to form port trunks. Refer to Table 1 to determine if your expansion modules support port trunking. Table 1 Trunked Ports on Expansion Modules Number of Ports on Expansion Module 78 Port Trunks 1 Does not support port trunking. 2 One port trunk consisting of two ports. 4 One trunk consisting of two or four ports.
AT-S25 Management Software User’s Guide Creating a Port Trunk This section contains the procedure for creating a port trunk on the switch. Be sure to review the guidelines in Port Trunking Overview on page 75 before performing the procedure. Caution Do not connect the cables to the trunk ports on the switches until after you have configured the trunk with the management software. Connecting the cables before configuring the software will create a loop in your network topology.
Section II: Local and Telnet Mangement 3. From the Port Trunking menu, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 4. Enter the ID of the module you wish to select, and press the Enter key. 5. From the Port Trunking menu, type 1 to select Create 10/100 Trunk. The following prompt is displayed. Enter Trunk Number -> [1 to 5] -> 6.
AT-S25 Management Software User’s Guide 4. From the Port Trunking menu, type 2 to select Create Gigabit Trunk. The following prompt is displayed. Enter Trunk Number -> [1 to 5] -> 5. Enter the number of the port that will constitute the port trunk; then press the Enter key. You could specify the ports individually (e.g., 1,2,3,4) or as a range (e.g., 7-10).
Section II: Local and Telnet Mangement Modifying a Port Trunk To modify a port trunk from the switch, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. 2. From the Ports Menu, type 3 to select Port Trunking. The Port Trunking menu in Figure 25 on page 79 is displayed. 3. From the Port Trunking menu, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 4.
AT-S25 Management Software User’s Guide Modifying a Trunk Name To modify a name of a created trunk port, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. 2. From the Ports Menu, type 3 to select Port Trunking. The Port Trunking menu in Figure 25 on page 79 is displayed. 3. From the Port Trunking menu, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 4.
Section II: Local and Telnet Mangement Deleting a Port Trunk Caution Disconnect the cables from the port trunk on the switch before performing the following procedure. Deleting a port trunk without first disconnecting the cables can create loops in your network topology. Data loops can result in broadcast storms and poor network performance. To delete a port trunk from the switch, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. 2.
Chapter 7 Port Mirroring This chapter contains the procedures for creating and deleting a port mirror.
Section II: Local and Telnet Mangement Port Mirroring Overview The port mirroring feature allows you to unobtrusively monitor the traffic being received and transmitted on one or more ports on a switch by having the traffic copied to another switch port. You could connect a network analyzer to the port where the traffic is being copied and monitor the traffic on the other ports without impacting network performance or speed.
AT-S25 Management Software User’s Guide Creating a Port Mirror To create a port mirror, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. 2. From the Ports Menu, type 2 to select Port Mirroring. The Port Mirroring menu in Figure 26 is displayed. Figure 26 Port Mirroring Menu 3. Type 1 to select Enable/Disable. The following prompt is displayed. Enter Enable (E)/Disable (D): 4. Type E to enable the port mirroring feature or D to disable the port mirroring feature.
Section II: Local and Telnet Mangement PARAMETER 3 - Destination Port DESCRIPTION Mirror port to which traffic will be sent to. This port cannot be part of a trunk or be one of the mirroring ports. Possible settings for this parameter are: • None (default) • 1 to 24 4 - Source Module Mirroring module whose traffic needs to be mirrored. 5 - Source Port Mirroring port whose traffic needs to be mirrored. Possible settings for this parameter are: • None (default) • 1 to 24 6.
AT-S25 Management Software User’s Guide Deleting a Port Mirror To delete a port mirror, perform the following procedure: 1. From the Main Menu, type 1 to select Ports Menu. 2. From the Ports Menu, type 2 to select Port Mirroring. The Port Mirroring menu in Figure 26 on page 87 is displayed. 3. Type 3 to select Destination Port. The following prompt is displayed. Enter Destination Port: (01-24) (0=None): 4. Enter 0 and press the Enter key. 5. Type S to select Save Configuration changes.
Chapter 8 STP and RSTP This chapter provides background information on the Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP). The chapter also contains procedures on how to adjust the STP and RSTP bridge and port parameters.
AT-S25 Management Software User’s Guide STP and RSTP Overview A significant danger to Ethernet network performance is the existence of a data loop in a network topology. A data loop exists when two or more nodes on a network can transmit data to each other over more than one data link. The problem that data loops pose is that data packets can become caught in repeating cycles, referred to as broadcast storms, that needlessly consume network bandwidth and significantly reduce network performance.
Section II: Local and Telnet Mangement Bridge Priority and the Root Bridge The first task that bridges perform when a spanning tree protocol is activated on a network is the selection of a root bridge. A root bridge distributes network topology information to the other network bridges and is used by the other bridges to determine if there are redundant paths in the network.
AT-S25 Management Software User’s Guide Path Costs and Port Costs Once the Root Bridge has been selected, the bridges must determine if the network contains redundant paths and, if one is found, they must select a preferred path while placing the redundant paths in a backup or blocking state.
Section II: Local and Telnet Mangement Port Priority If two paths have the same port cost, the bridges must select a preferred path. In some instances this can involve the use of the port priority parameter. This parameter can be used as a tie-breaker when two paths have the same cost. The port priority has a range of from 0 to 240. As with the bridge priority, this range is broken into increments, in this case multiples of 16.
AT-S25 Management Software User’s Guide To forestall the formation of temporarily data loops during topology changes, a port designated to change from blocking to forwarding passes through two additional states, listening and learning, before it begins to forward frames. The amount of time a port spends in these states is set by the forwarding delay value. This value states the amount of time that a port spends in the listening and learning states prior to changing to the forwarding state.
Section II: Local and Telnet Mangement There are two possible selections: Point-to-Point and Edge Port. If a bridge port is operating in full-duplex mode, than the port is functioning as point-to-point. Figure 27 illustrates two AT-8324 Switches that have been interconnected with one data link. With the link operating in full-duplex, the ports are said to be point-to-point ports.
AT-S25 Management Software User’s Guide A port can be both point-to-point and edge at the same time. It would operate in full-duplex and have no STP or RSTP devices connected to it. Figure 29 illustrates a port functioning both as point-to-point and edge.
Section II: Local and Telnet Mangement This issue is illustrated in Figure 30. Two VLANs, Sales and Production, span two AT-8324 Switches. Two links consisting of untagged ports interconnect the separate parts of each VLAN. If STP is activated on the switch, one of the links would be disabled. This problem can be avoided by not activating spanning tree or by connecting VLANs using tagged instead of untagged ports. (For information on tagged and untagged ports, refer to Chapter 10, Virtual LANs on page 115.
AT-S25 Management Software User’s Guide Enabling or Disabling STP or RSTP To enable or disable a spanning tree protocol (STP) or a rapid spanning tree protocol (RSTP), perform the following procedure: 1. From the Main Menu, type 3 to select Spanning Tree Menu. The Spanning Tree Menu in Figure 31 is displayed. Figure 31 Spanning Tree Menu 2. To select the spanning tree protocol version, type 2 to select STP or RSTP as Active Protocol Version.
Section II: Local and Telnet Mangement STP and RSTP Parameters Since both STP and RSTP are sharing the same parameters; instead of having them listed by sections in this chapter, they are now listed in the table below: Note Any changes made to the common parameters will be take effect on both protocols such as: Bridge Priority, Bridge Hello Time,….
AT-S25 Management Software User’s Guide Table 5 STP and RSTP Parameters PARAMETER Bridge Max Age DESCRIPTION The length of time after which stored bridge protocol data units (bpdus) are deleted by the bridge. All bridges in a bridged LAN use this aging time to test the age of stored configuration messages called bridge protocol data units (BPDUs). For example, if you use the default 20, all bridges delete current configuration messages after 20 seconds. This parameter can be from 6 to 40 seconds.
Section II: Local and Telnet Mangement Table 5 STP and RSTP Parameters PARAMETER DESCRIPTION Edge Port This parameter defines whether the port is functioning as an edge port. This parameter only applies to RSTP. For an explanation of this parameter, refer to Point-to-Point Ports and Edge Ports on page 95. Port The port number. State The current state of the selected port. Role The current role of the selected port.
AT-S25 Management Software User’s Guide Configuring STP This section contains the following procedures: ❑ Configuring a Bridge’s STP Settings on page 103 ❑ Configuring a Port’s STP Settings on page 105 Configuring a Bridge’s STP Settings This section contains the procedure for configuring a bridge’s STP settings. Caution The default STP parameters are adequate for most networks. Changing them without prior experience and an understanding of how STP works might have a negative effect on your network.
Section II: Local and Telnet Mangement 5. Enter or modify the bridge STP settings as desired. For description of the parameters displayed in this window, refer to Table 5, STP and RSTP Parameters on page 100. 6. After adjusting the parameters, type S to select Save Configuration changes. Changes to the parameters take effect immediately on the switch. Note The aging time for BPDUs is different from the aging time used by the MAC address table. 7.
AT-S25 Management Software User’s Guide Configuring a Port’s STP Settings To adjust a port’s STP parameters, perform the following procedure: 1. From the Spanning Tree Menu, type 2 to select Active Protocol Version. The following prompt is displayed: Enter new value (S-STP, R-RSTP): 2. Type S to select STP. 3. Type 3 to select STP Configuration. The STP Menu in Figure 32 on page 103 is displayed. 4. From the STP Menu, type P to select STP Port Parameters.
Section II: Local and Telnet Mangement The following prompt is displayed: End Port to Configure [1 - 24] -> ❑ To configure just one port, enter the same port number here as you entered in the previous step. ❑ To configure a range of ports, enter the last port of the range. 9. Press the Enter key. The Configure STP Port Settings menu in Figure 34 is displayed. Figure 34 Configure STP Port Settings Menu 10. Enter or modify a port’s STP settings as desired.
AT-S25 Management Software User’s Guide Displaying Port’s STP Status and Setting To display a port’s STP status and settings, perform the following procedure: 1. From the Spanning Tree Menu, type 2 to select Active Protocol Version. The following prompt is displayed: Enter new value (S-STP, R-RSTP): 2. Type S to select STP. 3. Type 3 to select STP Configuration. The STP Menu in Figure 32 on page 103 is displayed. 4. From the STP Menu, type P to select STP Port Parameters.
Section II: Local and Telnet Mangement The parameters displayed in this window are for viewing purposes only. For description of the parameters, refer to Table 5, STP and RSTP Parameters on page 100.
AT-S25 Management Software User’s Guide Configuring RSTP This section contains the following procedures: ❑ Configuring a Bridge’s RSTP Settings on page 109 ❑ Configuring a Port’s RSTP Settings on page 110 Configuring a Bridge’s RSTP Settings This section contains the procedure for configuring a bridge’s RSTP settings. Caution The default RSTP parameters are adequate for most networks.
Section II: Local and Telnet Mangement 5. Enter or modify the parameters in the RSTP Menu window as desired. For description of the parameters displayed in this window, refer to Table 5, STP and RSTP Parameters on page 100. 6. After adjusting the parameters, type S to select Save Configuration changes. Changes to the parameters take effect immediately on the switch. Note The aging time for BPDUs is different from the aging time used by the MAC address table. 7.
AT-S25 Management Software User’s Guide Figure 37 RSTP Port Parameters Menu 6. From the RSTP Port Parameters window, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 7. Enter the ID of the module you wish to select, and press the Enter key. 8. From the RSTP Port Parameters window, type 1 to select Configure RSTP Port Settings. The following prompt is displayed: Start Port to configure [1 - 24] -> 9.
Section II: Local and Telnet Mangement Figure 38 Configure RSTP Port Settings Menu 11. Enter or modify the parameters in the window as desired. For description of the parameters displayed in this window, refer to Table 5, STP and RSTP Parameters on page 100. 12. After making your changes, type S to select Save Configuration changes. Note All changes to a port’s RSTP settings, with the exception of port cost, are activated immediately. A change to the port cost value requires you to reset the switch.
AT-S25 Management Software User’s Guide Displaying Port’s RSTP Status and Settings Unlike the information displayed for STP, the RSTP status and settings information are listed separated in the AT-S25 software, under the following menus: ❑ Display RSTP Port Settings ❑ Display RSTP Port State Displaying a Port’s RSPT Settings To display a port’s RSTP settings, perform the following procedure: 1. From the Spanning Tree Menu, type 2 to select Active Protocol Version.
Section II: Local and Telnet Mangement The Display RSTP Port Configuration window in Figure 35 is displayed. Figure 39 Display RSTP Port Configuration Window The parameters displayed in this window are for viewing purposes only. For description of the parameters, refer to Table 5, STP and RSTP Parameters on page 100. Displaying a Port’s RSTP Status To display a port’s RSTP status, perform the following procedure: 1. From the Spanning Tree Menu, type 2 to select Active Protocol Version.
Chapter 9 Virtual LANs This chapter contains basic information about virtual LANs (VLANs). It also contains the procedures for creating, modifying, and deleting VLANs from a local or Telnet management interface. This chapter also describes the Basic VLAN mode and how you could change a switch’s VLAN operating mode.
Section II: Local and Telnet Mangement VLAN Overview A VLAN is a group of ports on an Ethernet switch that form a logical Ethernet segment. The ports of a VLAN form an independent broadcast domain where the traffic generated by the nodes of a VLAN remains within the VLAN. With VLANs, you could segment your network through the switch’s management software and so be able to group nodes with related functions into their own separate, logical LAN segments.
AT-S25 Management Software User’s Guide But with VLANs, you could change the LAN segment assignment of an end node connected to the switch through the switch’s ATS25 management software. VLAN memberships can be changed any time through the management software without moving the workstations physically, or having to change group memberships by moving cables from one switch port to another. Additionally, a virtual LAN can span more than one switch.
Section II: Local and Telnet Mangement Port-based VLAN Overview As explained in the VLAN Overview section earlier in this chapter, a VLAN consists of a group of ports on one or more Ethernet switches that form an independent broadcast domain. Traffic generated by the end nodes of a VLAN remains within the VLAN and does not cross over to the end nodes of other VLANs unless there is an interconnection device, such as a router or Layer 3 switch.
AT-S25 Management Software User’s Guide PARAMETER DESCRIPTION VLAN Identifier Each VLAN in a network must have a unique number assigned to it. This number is called the VLAN identifier (VID). This number uniquely identifies a VLAN in the switch and the network. If a VLAN consists only of ports located on one physical switch in your network, you would assign it a VID unique from all other VLANs in your network.
Section II: Local and Telnet Mangement PARAMETER Port VLAN Identifier General Rules to Creating a Port-based VLAN DESCRIPTION Each port in a port-based VLAN must have a port VLAN identifier (PVID). The switch associates a frame to a portbased VLAN by the PVID assigned to the port on which the frame is received, and forwards the frame only to those ports with the same PVID. Consequently, all ports of a port-based VLAN must have the same PVID.
AT-S25 Management Software User’s Guide ❑ The introduction of a router into your network could create security issues from unauthorized access to your network. ❑ A VLAN that spans several stacks of switches will require a port on each switch for the interconnection of the various parts of the VLAN. For example, a VLAN that spans three switches would require one port on each switch to interconnect the various sections of the VLAN.
Section II: Local and Telnet Mangement Port-based VLAN Example Figure 40 is an example of two port-based VLANs that span an AT-8316F or an AT-8324 Switch and one AT-8024 Switch.
AT-S25 Management Software User’s Guide The table below lists the ports assignments for the Sales and Production VLANs: Table 6 Port Assignments of the Port-based VLAN Example Sales VLAN (VID 2) Production VLAN (VID 3) AT-8324 Switch (Master) Ports 1 - 7 (PVID 2) Ports 17, 19 - 24 (PVID 3) AT-8324 Switch (Slave) Ports 1 - 4, 8 (PVID 2) Ports 20, 21, 23, 24 (PVID 3) AT-8024 Switch Ports 1 - 4, 7 (PVID 2) Ports 19, 21 -2 4 (PVID 3) AT-8316F or AT-8324 Switch Each VLAN is briefly summarized below: ❑
Section II: Local and Telnet Mangement Tagged VLAN Overview The second type of VLAN supported by the AT-8316F or AT-8324 Switch is the tagged VLAN. VLAN membership in a tagged VLAN is determined by information within the frames that are received on a port. This contrasts to a port-based VLAN, where the PVIDs assigned to the ports determine VLAN membership. The VLAN information within an Ethernet frame is referred to as a tag or tagged header.
AT-S25 Management Software User’s Guide For explanations of VLAN name and VLAN identifier, refer back to VLAN Name and VLAN Identifier on page 119. PARAMETER VLAN Name VLAN Identifier General Rules to Creating a Tagged VLAN DESCRIPTION For explanations of VLAN Name and VLAN Identifier, refer back to VLAN Name and VLAN Identifier on page 119. Tagged and Untagged Ports You need to specify which ports will be members of the VLAN.
Section II: Local and Telnet Mangement Tagged VLAN Example Figure 41 is an example of a network that uses tagged ports in two tagged VLANs to share network devices.
AT-S25 Management Software User’s Guide The port assignments for the VLANs are as follows: Sales VLAN (VID 2) Production VLAN (VID 3) Untagged Ports Untagged Ports Tagged Ports Tagged Ports AT-8316F or AT-8324 Switch AT-8324 Switch (Master) 1 to 6, 9 (PVID 2) 19 - 24, 15 (PVID 3) AT-8324 Switch (Slave) 1 - 4 (PVID 2) 10, 16 22 - 24 (PVID 3) 10, 16 AT-8024 Switch 1 - 4 (PVID 2) 9 21 - 24 (PVID 3) 9 This configuration is similar to the port-based VLAN example earlier in this appendix, but
Section II: Local and Telnet Mangement Basic VLAN Mode Overview The Fast Ethernet switches support a special VLAN configuration referred to as Basic VLAN Mode. When the Basic VLAN Mode is activated, frames are forwarded based solely on MAC addresses. All VLAN information, including PVIDs assigned to ports and VLAN tags in tagged frames, is ignored. Tagged frames are analyzed only for priority level. Packets are passed through the switch unchanged.
AT-S25 Management Software User’s Guide Switching the VLAN Mode To switch a VLAN’s mode from Tagged to Basic, or vice versa, perform the following procedure: 1. From the Main Menu, type 5 to select System Config Menu. The System Config Menu in Figure 43 is displayed. Figure 42 System Config Menu 2. Type 1 to select Switch Mode and press the Enter key. The prompt message is displayed: The switch will be rebooted after changing the switch mode. Do you want to continue? (Y/N): 3.
Section II: Local and Telnet Mangement Creating a Port-based or Tagged VLAN To create a new port-based or tagged VLAN, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. The VLAN Menu in Figure 43 is displayed. Figure 43 VLAN Menu 2. From the VLAN Menu, type 1 to select VLAN Definition. The VLAN Definitions menu in Figure 44 is displayed.
AT-S25 Management Software User’s Guide 3. From the VLAN Definition menu, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 4. Enter the ID of the module you wish to select, and press the Enter key. 5. From the VLAN Definition menu, type 1 to select Create VLAN. The Create VLAN window in Figure 45 is displayed. Figure 45 Create VLAN Menu 6.
Section II: Local and Telnet Mangement The menu selections in the window are described in the table below: PARAMETER 1 - VLAN Name DESCRIPTION Use this selection to change a VLAN’s name. The name can be from one to fifteen characters in length. The name should reflect the function of the nodes that will be a part of the VLAN (for example, Sales or Accounting). The name can contain spaces, but not special characters, such as asterisks (*) or exclamation points (!).
AT-S25 Management Software User’s Guide PARAMETER 4 - Untagged Ports DESCRIPTION Use this selection to add or remove untagged ports from the VLAN.You could specify the ports individually, as a range, both individually and as a range, all ports (ALL), or no port (NONE). To add or remove untagged ports, enter the new list of untagged ports for the VLAN by using the following examples for guidelines. For example: • If the VLAN will contain individual untagged ports, you would enter “5,8” for this value.
Section II: Local and Telnet Mangement Figure 46 Show All VLANs Window 2. A list of all created VLANs is displayed. 3. To check that a VLAN contains the appropriate ports, type D to select a VLAN ID and press the Enter key. The Display VLAN Ports window is displayed with a list of ports associated with the selected VLAN. 4. Press the Esc key or type R to return to the VLAN Definition menu.
AT-S25 Management Software User’s Guide Example of Creating a Port-based VLAN The following procedure creates the Sales VLAN illustrated in Portbased VLAN Example on page 122. This VLAN will be assigned a VID of two and will consist of four untagged ports, Ports 1 to 4. The VLAN will not contain any tagged ports. The VLAN traffic will not be mirrored on another port, nor will it be sent to the switch’s CPU. To create the example Sales VLAN, perform the following procedure: 1.
Section II: Local and Telnet Mangement Example of Creating a Tagged VLAN The following procedure creates the Engineering VLAN in the top switch illustrated in Tagged VLAN Example on page 126. This VLAN will be assigned a VID of 3. It will consist of four untagged ports, Ports 9, 10, 11, and 20, and two untagged ports, Ports 8 and 16. The VLAN traffic will not be mirrored on another port, nor will it be sent to the switch’s CPU. To create the example Engineering VLAN, perform the following procedure: 1.
AT-S25 Management Software User’s Guide Modifying a VLAN Note You need to know the VID of the VLAN you wish to modify in order to perform this procedure. To view the VLAN VIDs, refer to the procedure Displaying VLAN Information on page 139. To modify a VLAN, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. 2. From the VLAN Menu, type 1 to select VLAN Definition. 3. From the VLAN Definition menu, type 2 to select Modify VLAN.
Section II: Local and Telnet Mangement 7. Enter the VID of the VLAN you wish to modify. Press the Enter key. The Modify VLAN window for the selected VLAN is displayed. This window contains all relevant information about the VLAN. 8. Change the VLAN’s information as desired. The menu selections in the window are described in the table in Creating a Port-based or Tagged VLAN on page 130. 9. Type U to select Update VLAN. The VLAN has been modified. 10.
AT-S25 Management Software User’s Guide Displaying VLAN Information To view the name, VID number, and member ports of all the VLANs on a switch, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. 2. From the VLAN Menu, type 1 to select VLAN Definition. 3. From the VLAN Definition menu, type 4 to select Show All VLANs. The Show All VLANs window is displayed. An example of the window is shown in Figure 48.
Section II: Local and Telnet Mangement Deleting a VLAN Note You need to know the VID of the VLAN you wish to delete to perform this procedure. To obtain a VLAN’s VID, refer to the procedure Displaying VLAN Information on page 139. To delete a VLAN, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. 2. From the VLAN Menu, type 1 to select VLAN Definition. 3. From the VLAN Definition menu, type 3 to select Delete VLAN. The Delete VLAN menu in Figure 49 is displayed.
AT-S25 Management Software User’s Guide The following confirmation prompt is displayed: Are you sure you want to delete this VLAN (Y/N) [Yes/No] -> 7. Type Y to delete the VLAN or N to cancel the procedure. Press the Enter key. When Y is selected, the following prompt is displayed: VLAN Delete Operation was successful! Please make sure to manually delete any static MAC address entries for this VLAN 8. Press any key to continue. 9. Type S to select Save Configuration changes. The VLAN has been deleted.
Section II: Local and Telnet Mangement Deleting All VLANs This section contains the procedure for deleting all VLANs, except the Default VLAN, on a switch. To delete selected VLANs, perform the procedure Deleting a VLAN on page 140. To delete all VLANs on a switch, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. 2. From the VLAN Menu, type 1 to select VLAN Definition. 3. From the VLAN Definition menu, type 6 to select Clear All VLANs.
AT-S25 Management Software User’s Guide Displaying PVIDs and Port Priorities The following procedure displays a window that lists the PVIDs for all the ports on the switch. The window also contains the current priority queue settings for each port. To display the PVID settings on the switch, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. 2. From the VLAN Menu, type 2 to select Configure Port Priorities. The Configure Port Priorities menu in Figure 51 is displayed.
Section II: Local and Telnet Mangement Figure 51 Show Port VLANs and Priorities Window The PVID column displays the current PVID value for each switch port. Note The Priority and Override Priority columns relate to the switch’s Class of Service feature. For information, refer to Chapter 12, Class of Service on page 162.
AT-S25 Management Software User’s Guide Specifying a Management VLAN In order for you to remotely manage an AT-8316F or an AT-8324 Switch, there must exist a communications path through which the management station and the switch to be manage can communicate. If the management station is connected directly to a port on the switch, either through a tagged or untagged port, then the communications path automatically exists and you could fully manage the switch.
Section II: Local and Telnet Mangement Now let’s assume that you have decided to create a VLAN called NMS with a VID of 24 for the sole purpose of remote network management. For this, you would need to create the NMS VLAN on each AT-8316F or AT-8324 Switch that you wish to manage remotely, being sure to assign each NMS VLAN the VID of 24. You would also need to specify the NMS VLAN as the management VLAN on each switch using the management software.
Chapter 10 MAC Menu The chapter contains the procedures for viewing the static and dynamic MAC Menu.
Section II: Local and Telnet Mangement MAC Address Overview Every hardware device that you connect to your network has a unique MAC address associated with it. A MAC address is assigned to a device by the device’s manufacturer. For example, every network interface card that you use to connect your computers to your network has a MAC address assigned to it by the adapter’s manufacturer. The AT-8316F or AT-8324 Switch may contain up to 12,000 MAC entries.
AT-S25 Management Software User’s Guide The type of MAC address described above is referred to as a dynamic MAC address. Dynamic MAC addresses are addresses that the switch learns by examining the source MAC addresses of the frames received on the ports. Dynamic MAC addresses are not stored indefinitely in the MAC Menu. The switch deletes a dynamic MAC address from the table if it does not receive any frames from the node after a specified period of time.
Section II: Local and Telnet Mangement Viewing MAC Addresses To display the MAC Menu, perform the following procedure: 1. From the Main Menu, type 6 to select MAC Menu. The MAC Menu in Figure 52 is displayed. Figure 52 MAC Menu Viewing all MAC addresses To display all the MAC addresses, including the static, dynamic, or multicast MAC addresses, perform the following procedure: 1. From the Main Menu, type 6 to select MAC Menu. 2.
AT-S25 Management Software User’s Guide Figure 53 Show all MAC addresses Window The information displayed in this window is for viewing purposes only. The columns are described in the table below: PARAMETER Viewing static MAC addresses only DESCRIPTION MAC Address The MAC address of the node connected to the switch. Module The module where the MAC address came from. Port The port on the switch where the MAC address was learned. VlanID The VID of the VLAN to which the port is an untagged member.
Section II: Local and Telnet Mangement Figure 54 Show all static MAC addresses Window This window is exactly the same as the Show all static MAC address window, except for the title and the fact that it displays only static MAC addresses. For information displayed in this window, refer to the table in Viewing MAC Addresses on page 150. Viewing multicast MAC addresses only To display only multicast MAC addresses, perform the following procedure: 1. From the Main Menu, type 6 to select MAC Menu. 2.
AT-S25 Management Software User’s Guide Figure 55 Show all multicast MAC addresses Window This window is slightly different than the other Show MAC addresses window. The information displayed in this window is also for viewing purposes only. The columns are described in the table below: PARAMETER Viewing MAC addresses on base ports only DESCRIPTION MAC Address The MAC address of the node connected to the switch. VlanID The VID of the VLAN to which the port is an untagged member.
Section II: Local and Telnet Mangement Figure 56 Show MAC addresses on base ports Window This window is exactly the same as the Show all static MAC address window, except for the title. For information displayed in this window, refer to the table in Viewing MAC Addresses on page 150.
AT-S25 Management Software User’s Guide Viewing MAC Addresses by Port & Module This section contains the procedure for viewing the dynamic MAC addresses that have been learned on a particular port. You could also use this procedure to view any static MAC addresses that have been assigned to a port. 1. From the Main Menu, type 6 to select MAC Menu. 2. From the MAC Menu, type 7 to select Show MAC addresses by port & module. The following prompt is displayed: Please enter module number -> [1 to 8] -> 3.
Section II: Local and Telnet Mangement Viewing the MAC Addresses of a VLAN The procedure in this section can be useful if you created VLANs on the switch and want to view the MAC addresses of the nodes of a particular VLAN. (This procedure is not of much value if the switch contains only the Default VLAN, in which case displaying the entire MAC Menu, as explained earlier in this chapter, produces the same result.
AT-S25 Management Software User’s Guide Identifying a Port or a Module Number by MAC Address In some situations, you might want to know which port a particular MAC address was learned. You could display the MAC Menu and scroll through the list looking for the MAC address. But if the switch is part of a large network, finding the address could prove difficult. The procedure in this section offers an easier way.
Section II: Local and Telnet Mangement Deleting MAC Addresses The following procedure explains how to delete a static, dynamic, or multicast MAC address from the MAC Menu. To delete an address from the MAC Menu, perform the following procedure: 1. From the Main Menu, type 6 to select MAC Menu. 2. From the MAC Menu, type A to select Delete MAC Address. The following prompt is displayed: Please enter a MAC address -> 3.
AT-S25 Management Software User’s Guide Deleting All Dynamic MAC Addresses The management software allows you to purge the MAC Menu of all dynamic MAC addresses. Once the table has been purged, the switch immediately begins to relearn the MAC addresses as frames are received on the ports. Note This procedure does not delete static MAC addresses. To delete all dynamic MAC addresses from the MAC Menu, perform the following procedure. 1. From the Main Menu, type 6 to select MAC Menu. 2.
Section II: Local and Telnet Mangement Adding Static and Multicast MAC Addresses This section contains the procedure for adding the static and multicast addresses to the switch. You could assign up to 150 static MAC addresses on a stack of an AT-8316F or an AT-8324 Switch. To add a static or multicast address to the MAC Menu, perform the following procedure: 1. From the Main Menu, type 6 to select MAC Menu. 2. From the MAC Menu, type 9 to select Add static MAC address.
AT-S25 Management Software User’s Guide Changing the Aging Time The switch uses the aging time to delete inactive dynamic MAC addresses from the MAC Menu. When the switch detects that no packets have been sent to or received from a particular MAC address in the table after the period specified by the aging time, the switch deletes the address. This prevents the table from becoming full of addresses of nodes that are no longer active. To adjust the aging time, perform the following procedure: 1.
Chapter 11 Class of Service This chapter contains the procedures for configuring the Class of Service (CoS) feature of the AT-S25 software.
AT-S25 Management Software User’s Guide Class of Service Overview The AT-8316F or AT-8324 Switch supports CoS as specified in the IEEE 802.1p and 802.1Q standards. CoS can be important in network environments where there are time-critical applications, such as voice transmission or video conferencing, that can be adversely affected by packet transfer delays. Prior to CoS, network traffic was handled in a best-effort manner. File transfer delays did occur, but were mostly transparent to network users.
Section II: Local and Telnet Mangement You could also use CoS to control which priority queue handles untagged frames that ingress a port. By default, untagged frames (i.e., frames without VLAN or priority level information) are automatically assigned to the low priority buffer. But you could configure CoS on a port so that all untagged frames received on the port are directed to the high priority queue.
AT-S25 Management Software User’s Guide Configuring CoS To configure CoS for a port, perform the following procedure: 1. From the Main Menu, type 2 to select VLAN Menu. 2. From the VLAN Menu, type 2 to select Configure Port Priorities. 3. Type 1 to select Configure Port Priorities. The following prompt is displayed: Enter port number -> 4. Enter the number of the port on the switch where you wish to configure CoS. Press the Enter key.
Chapter 12 IGMP Snooping This chapter explains how to activate and configure the Internet Group Management Protocol (IGMP) snooping feature on the stack.
AT-S25 Management Software User’s Guide IGMP Snooping Overview IGMP snooping is best explained by first defining IGMP. This protocol enables routers to create lists of nodes that are members of multicast groups. (A multicast group is a group of end nodes that want to receive multicast packets from a multicast application.) A router creates a multicast membership list by periodically sending out queries to the local area networks connected to its ports.
Section II: Local and Telnet Mangement Without IGMP snooping, a switch would have to flood multicast packets out all of its ports, except the port on which it received the packet. Such flooding of packets can negatively impact the switch and network performance. The AT-8316F or an AT-8324 switch supports both IGMP Version 1 and Version 2.
AT-S25 Management Software User’s Guide Activating IGMP Snooping To activate or deactivate IGMP snooping on the stack and to configure IGMP snooping parameters, perform the following procedure: 1. From the Main Menu, type 5 to select System Config Menu. 2. From the System Config Menu, type A to select Advanced Configuration. 3. From the Advanced Configuration window, type 1 to select IGMP Snooping Configuration. The IGMP Snooping Configuration menu in Figure 57 is displayed.
Section II: Local and Telnet Mangement PARAMETER 2 - Multicast Host Topology DESCRIPTION Defines whether there is only one host node per stack port or multiple host nodes per port. Possible settings for this parameter are: • Single-Host/Port (Edge): This setting is appropriate when there is only one host node connected to each port on the stack.
AT-S25 Management Software User’s Guide PARAMETER 4 - Maximum Multicast Groups DESCRIPTION Specifies the maximum number of multicast groups the stack will learn. The range is 1 to 2048 groups. The default is 256 multicast groups. This parameter is useful with networks that contain a large number of multicast groups. You could use the parameter to prevent the stack’s MAC Address Table from filling up with multicast MAC addresses, leaving no room for dynamic or static MAC addresses.
Section II: Local and Telnet Mangement Displaying a List of Host Nodes You could use the AT-S25 software to display a list of the multicast groups on a stack, as well as the host nodes. To display the list, perform the following procedure: 1. From the Main Menu, type 5 to select System Config Menu. 2. From the System Config Menu, type A to select Advanced Configuration. 3. From the Advanced Configuration window, type 1 to select IGMP Snooping Configuration.
AT-S25 Management Software User’s Guide Displaying a List of Multicast Routers A multicast router is a router that is receiving multicast packets from a multicast application and transmitting the packets to host nodes. You could use the AT-S25 software to display a list of the multicast routers that are connected to the stack. To display a list of the multicast routers, perform the following procedure: 1. From the Main Menu, type 5 to select System Config Menu. 2.
Chapter 13 Ethernet Statistics This chapter contains the procedures for displaying and clearing data traffic statistics.
AT-S25 Management Software User’s Guide Displaying Port Statistics To display Ethernet port statistics, perform the following procedure: 1. From the Main Menu, type 7 to select Ethernet Statistics. The Ethernet Statistics menu in Figure 60 is displayed. Figure 60 Ethernet Statistics Menu 2. From the Ethernet Statistics menu, type 1 to select Display Port Statistics. The Display Port Statistics window in Figure 60 is displayed.
Section II: Local and Telnet Mangement The information in this window is for viewing purposes only. The statistics are described in the table below Table 7 Port and Module Statistics PARAMETER DESCRIPTION TX_Total (Transmit Packets) Number of packets transmitted out the port. RX_Total (Receive Packets) Number of packets received on the port. RX-Ucast (Received Unicast) Number of unicast packets received on the port.
AT-S25 Management Software User’s Guide Displaying Switch Statistics To display Ethernet statistics for an entire switch, perform the following procedure: 1. From the Main Menu, type 7 to select Ethernet Statistics. 2. From the Ethernet Statistics menu, type 2 to select Display Module Statistics. The statistics for the switch are displayed in the Display Module Statistics window, shown in Figure 62. Figure 62 Display Module Statistics Window The information in this window is for viewing purposes only.
Section II: Local and Telnet Mangement Clearing Switch Statistics To clear Ethernet statistics for an entire switch, perform the following procedure: 1. From the Main Menu, type 7 to select Ethernet Statistics. 2. From the Ethernet Statistics menu, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 3. Enter the ID of the module you wish to select, and press the Enter key. 4.
AT-S25 Management Software User’s Guide Clearing Port Statistics To clear Ethernet port statistics, perform the following procedure: 1. From the Main Menu, type 7 to select Ethernet Statistics. 2. From the Ethernet Statistics menu, type M if you wish to select a module other than the one currently displayed. The prompt message is displayed: Select Module ID: [1 to 8] -> 3. Enter the ID of the module you wish to select, and press the Enter key. 4.
Chapter 14 File Downloads and Uploads This chapter contains the procedures for displaying and clearing data traffic statistics. Sections in the chapter include: ❑ Obtaining Software Updates on page 182 ❑ Transferring Files from a Local Management Interface on page 183 ❑ Transferring Files Using HyperTerminal Interface on page 188 There are three files that coexist on an AT-8316F or an AT-8324 Switch while the device is operating.
AT-S25 Management Software User’s Guide or nearly the same. What you could do is configure one stack of the AT8316F or AT-8324 Switches in your network, and then download its configuration file to the other stacks. This can save you the trouble of having to configure each stack individually.
Section II: Local and Telnet Mangement Obtaining Software Updates Allied Telesyn periodically updates and revises the AT-S25 management software for your AT-8316F and AT-8324 Switches. The latest version of the software is posted on the Allied Telesyn web site for you to download. New releases of the AT-S25 management software are available from the Allied Telesyn web site at www.alliedtelesyn.com and from our FTP server at ftp.alliedtelesyn.com.
AT-S25 Management Software User’s Guide Transferring Files from a Local Management Interface This section contains the procedure for downloading or uploading the following files onto a switch from a local management interface. ❑ New AT-S25 image file ❑ Configuration file You could transfer a file using Xmodem or TFTP. In order to use TFTP, there must be a node on your network with the TFTP server software and the file to download must be stored on the same node.
Section II: Local and Telnet Mangement Figure 63 Downloads & Uploads Menu Downloading An Image File To download a new image file onto a switch, perform the following procedure: 1. From the Main Menu, type 4 to select Administration Menu. 2. From the Administration Menu, type D to select Downloads & Uploads Menu. 3. To download a new image file onto the switch, type 1 to select Download Image through Xmodem/TFTP.
AT-S25 Management Software User’s Guide ❑ To download a file using TFTP, perform the following procedure: a. Type T and press the Enter key. The following prompt is displayed: TFTP Server IP address: b. Enter the IP address of the TFTP server. The following prompt is displayed: Remote File Name: c. Enter the directory path and file name of the new management software image that you wish to download; then press the Enter key. Note The image file must be stored on the TFTP server.
Section II: Local and Telnet Mangement Downloading Configuration File To download a new configuration file onto a switch, perform the following procedure: 1. From the Main Menu, type 4 to select Administration Menu. 2. From the Administration Menu, type D to select Downloads & Uploads Menu. 3. To download a new configuration file onto the switch, type 2 to select Download Configuration through Xmodem/TFTP.
AT-S25 Management Software User’s Guide Uploading Configuration File to TFTP Server To upload a configuration file to the TFTP server on an AT-8316F or an AT-8324 Switch, perform the following procedure: 1. From the Main Menu, type 4 to select Administration Menu. 2. From the Administration Menu, type D to select Downloads & Uploads Menu. 3. To upload a new configuration file onto the switch, type 3 to select Upload Configuration to TFTP Server.
Section II: Local and Telnet Mangement Transferring Files Using HyperTerminal Interface This section contains the procedure for downloading or uploading a file using the Hilgraeve HyperTerminal program. 1. From the HyperTerminal main window, select the Transfer menu. 2. Select Send File from the Transfer pull-down menu, as shown in Figure 64. Figure 64 Local Management Window The Send File window in Figure 65 on page 188 is displayed. Figure 65 Send File Window 3.
AT-S25 Management Software User’s Guide The software immediately begins to download onto the switch. The Xmodem File Send window in Figure 66 displays current status of the software download. The download process takes a couple minutes to complete. Figure 66 XModem File Send Window If you are installing a new management image, the switch begins to initialize the software after it is installed, a process that takes approximately one minute to complete.
Section III Web Browser Management The chapters in this section explain how to manage the AT-8316F and AT-8324 Fast Ethernet Switches using a web browser.
Chapter 15 Starting a Web Browser Management Interface This chapter contains the procedure for starting a management interface on an AT-8316F or an AT-8324 Switch using a web browser, such as Microsoft® Internet Explorer or Netscape® Navigator.
Section III: Web Browser Management Web Browser Management Interface This section explains how to use a web browser management interface. Starting a Web Browser Interface Starting a Web browser management interface requires that the Master switch on your network that has an IP address. Once you have started a Web browser management interface on the Master switch, you will have management access to all other AT-8316F and AT-8324 Switches that reside in the same switch.
AT-S25 Management Software User’s Guide Note The user names cannot be changed and the passwords are case sensitive. To change a password, refer to Configuring an IP Address and Switch Name on page 43. The window shown in Figure 68 is displayed. Figure 68 Home Page This is the Home page of the management software. In the left portion of the Home page is the main menu: ❑ Configuration ❑ Monitoring ❑ Exit Note A web browser management interface remains active even if you link to other sites.
Section III: Web Browser Management Browser Tools Quitting from a Web Browser Management Interface You could use the browser tools to move around the web-browser menus. Selecting Back on your browser’s toolbar returns you to the previous display. You could also use the browser’s bookmark feature on frequently-used web-browser menus and windows. To exit from a web browser management interface, perform the following procedure: 1. From any page in AT-S25 management software, select Exit.
Chapter 16 Basic Switch Parameters This chapter contains the following sections: ❑ Configuring an IP Address and Switch Name on page 196 ❑ Activating the BOOTP and DHCP Services on page 200 ❑ Resetting a Switch on page 201 ❑ Viewing System Information on page 202 ❑ Configuring the SNMP Parameters and Trap IP Addresses on page 204 ❑ Pinging a Remote System on page 206 ❑ Returning the AT-S25 Software to the Factory Default Values on page 207 195
Section III: Web Browser Management Configuring an IP Address and Switch Name Note For guidelines on when to assign an IP address, subnet address, and gateway address to an AT-8316F or an AT-8324 Switch, refer to When Does a Switch Need an IP Address? on page 42. To set the basic parameters for an AT-8316F or an AT-8324 Switch, perform the following procedure: 1. From the Home Page, select Configuration. The Configuration window is displayed with the System menu option selected by default. 2.
AT-S25 Management Software User’s Guide Note This procedure only describes the parameters in the Administration section of the window. The parameters in the Configuration and Broadcast Storm Control sections are discussed later in this guide. Note The Reset button at the bottom of the window is used to reset the switch. 3. Enter or modify the parameters in the window as desired. Changes to the parameters take effect immediately on the switch.
Section III: Web Browser Management PARAMETER Manager Password Confirm Manager Password Operator Password Operator Confirm Password DESCRIPTION These parameters are used to change the administrator’s login password for the switch. The password can be from 0 to 20 characters in length. The same password is used for both local and remote management interfaces. To create a new password, enter the new password into both fields. The default password is “friend”.
AT-S25 Management Software User’s Guide Note A change to any of the above parameters, including the IP address and subnet mask, is immediately activated on the switch. Caution A change to the IP address of the switch will result in the loss of the remote management interface. You could restart the management interface using the switch’s new IP address.
Section III: Web Browser Management Activating the BOOTP and DHCP Services Note For guidelines or background information on BOOTP and DHCP, refer to the section Activating the BOOTP and DHCP Services on page 46. To activate or deactivate the BOOTP and DHCP protocols on the switch from a web browser management interface, perform the following procedure: 1. From the Home Page, select Configuration. The Configuration window is displayed with the System menu option selected by default. 2.
AT-S25 Management Software User’s Guide Resetting a Switch To reset a switch, perform the following procedure: 1. From the Home Page, select Configuration. The Configuration window is displayed with the System option selected by default. 2. If the System menu option is not selected, select it and then select the General tab. 3. Click Reset. A confirmation prompt is displayed. 4. Click OK to reset the switch or Cancel to cancel the procedure. Resetting the switch ends your web browser management interface.
Section III: Web Browser Management Viewing System Information To view basic information about the switch, perform the following procedure: 1. From the Home page, select Monitoring. The Monitoring window is displayed with the System menu option selected by default. 2. If the System menu option is not selected, select it and then select the General tab. The General tab window in Figure 71 is displayed.
AT-S25 Management Software User’s Guide This window is for viewing purposes only. You could not change any of the values from this window.
Section III: Web Browser Management Configuring the SNMP Parameters and Trap IP Addresses To change the switch’s SNMP community strings or to specify the IP addresses of management stations to receive traps from the switch, perform the following procedure: 1. From the Home page, select Configuration. The Configuration window is displayed with the System menu option selected by default. 2. If the System menu option is not selected, select it and then select the SNMP tab.
AT-S25 Management Software User’s Guide ❑ To specify the IP addresses of up to four management workstations on your network to receive traps from the switch, use the selections below: ◗ ◗ ◗ ◗ Trap Receiver 1 Trap Receiver 2 Trap Receiver 3 Trap Receiver 4 Note The Enable SNMP Access check box the window controls whether the switch can be remotely managed using an SNMP application program. If the check box is empty, the switch cannot be managed through SNMP. This is the default. 4. Click Apply.
Section III: Web Browser Management Pinging a Remote System You could instruct the switch to ping a node on your network. This procedure is useful in determining whether a valid link exists between the switch and another device. To ping a network device, perform the following procedure: 1. From the Home Page, select Monitoring. The Monitoring window is displayed with the System menu option selected by default. 2. If the System menu option is not selected, select it and then select the Ping Client tab.
AT-S25 Management Software User’s Guide Returning the AT-S25 Software to the Factory Default Values The procedure in this section returns all AT-S25 software parameters, except the IP address, subnet mask, and gateway address, to their default values. This procedure also deletes any VLANs that you have created on the switch. Note The AT-S25 software default values can be found in Appendix A, AT-S25 Default Settings on page 273.
Chapter 17 Port Parameters The procedures in this chapter allow you to view and change the parameter settings for the individual ports on a switch. Examples of port parameters that you could adjust include duplex mode and port speed.
AT-S25 Management Software User’s Guide Configuring Port Parameters To configure the parameter settings for a port on a switch, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 1. 3. Select the Port Setting tab. The Port Settings window is shown in Figure 75. Figure 75 Configuration - Port Settings Window A graphical image of an AT-8316F or an AT-8324 Fast Ethernet Switch is displayed. 4. Select a port that you wish to configure.
Section III: Web Browser Management The Settings for Port window is displayed. An example of the window is shown in Figure 76. Figure 76 Example of Settings for Port(s) Window Note Clicking Default returns the port settings to the default values. Default values are listed in Appendix A, AT-S25 Default Settings on page 273. 6. Enter or modify the port parameters as desired. The parameters are described in the table below: Parameter Disable Port DESCRIPTION Enables or disables a port.
AT-S25 Management Software User’s Guide Parameter Speed and Mode DESCRIPTION Configures the operating speed and duplex mode of the selected port. Possible settings for this parameter are: • Auto-Negotiate: Allows the port to automatically negotiate with the device connected to it (default). • 10Mbps - Half Duplex • 10Mbps - Full Duplex • 100Mbps - Half Duplex • 100Mbps - Full Duplex Disable Flow Control Uses a special pause packet to stop the end node from sending frames.
Section III: Web Browser Management Displaying Port Status and Statistics The procedure in this section displays the operating status of the ports on a switch and port statistics. You could view a port’s operating speed, duplex mode, and more. You could also view the operating status of any GBIC modules installed in an AT-8324. To display the status or statistics of a switch port, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Monitoring page, select Layer 1. 3.
AT-S25 Management Software User’s Guide If you select Port Status, the Port Status window in Figure 78 is displayed. Figure 78 Port Status Window The information in this window is for viewing purposes only. To adjust port parameters, refer to Configuring Port Parameters on page 209.
Section III: Web Browser Management The columns in the window are described below: PARAMETER DESCRIPTION PortName/ UplinkType PortName is the name of the port, and UplinkType is the type of the applique’ in the uplink slot (AT-A14, AT-A15, AT-A17, AT-A18, or AT-A19). NOTE: The UplinkType only applies to the uplink ports. State The current state of the port. Possible settings for this parameter are: • Enable (default) • Disable Nego The status of Auto-Negotiation on the port.
AT-S25 Management Software User’s Guide PARAMETER FlowCtrl DESCRIPTION The flow control setting for the port. Possible settings for this parameter are: • Enable • Disable STP_State The current operating status of the port. Possible settings for this parameter are: • Disable • Blocking • Listening • Learning • Forwarding If you select Statistics, the Statistics window in Figure 79 is displayed. Figure 79 Port Statistics Window The information in this window is for viewing purposes only.
Section III: Web Browser Management PARAMETER 216 DESCRIPTION RX-CRC Number of packets with a cyclic redundancy check (CRC) error but with the proper length (64-1518 bytes) received on the port. RX-Frag Number of undersized packets, packets with alignment errors, and packets with FCS errors (CRC errors) received on the port. RX-Jabber Number of Jabber packets received. A Jabber packet is a packet which has its length greater than MAXFRAMESIZE, invalid CRC, and Rx error event has been detected.
Chapter 18 Port Security This chapter explains how to display the current port security level on the switch from a web browser management interface. Note For background information on port security, refer to Port Security Overview on page 67. Note A switch’s port security level can be changed only from a local management interface.
Section III: Web Browser Management Displaying the Port Security Level To display the switch’s port security level, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Configuration page, select Layer 2. 3. From the Layer 2 page, select the Port Security tab. The current security level is displayed.
Chapter 19 Port Trunks This chapter contains the procedure for creating or deleting a port trunk from a web browser management interface. Note For guidelines and background information on port trunking, refer to Port Trunking Overview on page 75.
Section III: Web Browser Management Creating a Port Trunk Caution Do not connect the cables of a port trunk to the ports on the switch until after you have configured the ports on both the switch and the end node. Connecting the cables prior to configuring the ports can create loops in your network topology. Loops can result in broadcast storms, which can adversely effect the operations of your network. Note A port trunk contains a group of 2 to 8 ports. The maximum number of ports in a trunk is 8.
AT-S25 Management Software User’s Guide The Port Trunking window in Figure 82 is displayed. Figure 82 Port Trunking Window - Create 5. From the Trunk Number pull-down list, select the group of port trunk you are creating. 6. In the Trunk Name text box, enter the name of the trunk you are creating. 7. Select the ports in a graphical image of an AT-8316F or an AT-8324 Fast Ethernet Switch. If the switch does not contain a port trunk, all ports in the switch image are black.
Section III: Web Browser Management Modifying a Port Trunk To modify a port trunk, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 1. 3. Select the Port Trunking tab. The Port Trunking tab window in Figure 81 is displayed. 4. From the Port Trunking tab window, click to select the trunk number you wish to modify. 5. Click Modify. The Port Trunking window in Figure 83 is displayed.
AT-S25 Management Software User’s Guide Deleting a Port Trunk To delete a port trunk, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 1. 3. Select the Port Trunking tab. The Port Trunking tab window in Figure 81 on page 220 is displayed with the configuration of previously created trunks. 4. From the Port Trunking tab window, click to select the trunk number you wish to delete. 5. Click Remove.
Chapter 20 Port Mirroring This chapter contains the procedure for creating or deleting a port mirror. Note For background information on port mirroring, refer to Port Mirroring Overview on page 86.
AT-S25 Management Software User’s Guide Creating a Port Mirror To create a port mirror, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 1. 3. Select the Port Mirroring tab. The Port Mirroring window in Figure 84 is displayed. Figure 84 Port Mirroring Window 1. Before the port mirroring can begin, you will need to enable mirroring by checking the Enable Port Mirroring check box; then click Apply.
Section III: Web Browser Management The Port Mirroring window in Figure 85 is displayed: Figure 85 Port Mirroring Window - Enabled 2. In the Destination (Mirror) and Source (Mirroring) sections, use the Module’s and the Port’s pull-down menus to select the ports to function as the port mirror. The functionality of these menus are described in the table below: PARAMETER DESCRIPTION Destination - Module Mirror module to which traffic will be sent to.
AT-S25 Management Software User’s Guide Deleting a Port Mirror To delete a port mirror, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 1. 3. Select the Port Mirroring tab. The Port Mirroring window in Figure 84 on page 225 is displayed. 4. To disable port mirroring, perform the following steps: ❑ Make sure that the Enable Port Mirroring check box is not selected. ❑ Select None from the Source’s Port pull-down menu. 5. Click Apply.
Chapter 21 STP and RSTP This chapter explains how to configure the RSTP parameters on an AT8316F or an AT-8324 Switch from a web browser management interface. Sections in the chapter include: ❑ Enabling or Disabling STP or RSTP on page 229 ❑ Configuring STP on page 233 ❑ Displaying STP Status and Settings on page 236 ❑ Configuring RSTP on page 238 ❑ Displaying RSTP Status and Settings on page 241 Note For background information on rapid spanning tree, refer to STP and RSTP Overview on page 91.
AT-S25 Management Software User’s Guide Enabling or Disabling STP or RSTP To enable or disable spanning tree protocol (STP) or rapid spanning tree protocol (RSTP) on the bridge, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 2 tab. 3. From the Layer 2 page, select the Spanning Tree tab. The Spanning Tree window in Figure 86 is displayed. Figure 86 Configuration - Spanning Tree Window 4.
Section III: Web Browser Management STP and RSTP Parameters Since both STP and RSTP are sharing the same parameters; instead of having them listed by sections in this chapter, they are now listed in the table below: Note Any changes made to the common parameters will be take effect on both protocols such as: Bridge Priority, Bridge Hello Time,….
AT-S25 Management Software User’s Guide Table 8 STP and RSTP Parameters PARAMETER Bridge Max Age DESCRIPTION The length of time after which stored bridge protocol data units (bpdus) are deleted by the bridge. All bridges in a bridged LAN use this aging time to test the age of stored configuration messages called bridge protocol data units (BPDUs). For example, if you use the default 20, all bridges delete current configuration messages after 20 seconds. This parameter can be from 6 to 40 seconds.
Section III: Web Browser Management Table 8 STP and RSTP Parameters PARAMETER DESCRIPTION Edge Port This parameter defines whether the port is functioning as an edge port. This parameter only applies to RSTP. For an explanation of this parameter, refer to Point-to-Point Ports and Edge Ports on page 95. Port The port number. Enable The pork link status. State The current state of the selected port. Role The current role of the selected port.
AT-S25 Management Software User’s Guide Configuring STP Configuring a Bridge’s STP Settings This section contains the procedure for configuring a bridge’s STP settings. Caution The bridge provides default STP parameters that are adequate for most networks. Changing them without prior experience and an understanding of how STP works might have a negative effect on your network. You should consult the IEEE 802.1d standard before changing any of the STP parameters.
Section III: Web Browser Management The STP Configuration Spanning Tree window in Figure 86 is displayed. Figure 87 STP Configuration Spanning Tree Window 3. Enter or modify the STP configuration settings as desired. For description of the parameters displayed in this window, refer to Table 8, STP and RSTP Parameters on page 230. 4. Click Apply. Changes are immediately activated on the switch. Configuring a Port’s STP Settings To configure a port’s STP settings, perform the following procedure: 1.
AT-S25 Management Software User’s Guide The STP Settings window displayed in Figure 88 is displayed. Figure 88 STP Settings Window 3. Enter or modify the STP settings as desired. For description of the parameters displayed in this window, refer to Table 8, STP and RSTP Parameters on page 230. 4. Click Apply. Note A change to the port priority parameter takes effect immediately. A change to the port cost value requires you to reset the switch.
Section III: Web Browser Management Displaying STP Status and Settings Displaying Bridge’s STP Status and Settings To display a bridge’s STP status and settings, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Monitoring menu, select Layer 2 tab. 3. From the Layer 2 window, select the Spanning Tree tab. The Spanning Tree window in Figure 89 is displayed. Figure 89 Monitoring - Spanning Tree Window The parameters displayed in this window are for viewing purpose only.
AT-S25 Management Software User’s Guide The selected port(s) will turn white. (To deselect a port, click it again.) 2. Click Settings, the STP Port Status window displayed in Figure 90 is displayed. Figure 90 Monitoring - STP Settings Window The port’s STP settings displayed in this window are for viewing purpose only. Refer to Configuring a Port’s STP Settings on page 234 for parameter descriptions.
Section III: Web Browser Management Configuring RSTP Configuring a Bridge’s RSTP Settings This section contains the procedure for configuring a bridge’s RSTP settings. Caution The bridge provides default RSTP parameters that are adequate for most networks. Changing them without prior experience and an understanding of how RSTP works might have a negative effect on your network. You should consult the IEEE 802.1w standard before changing any of the RSTP parameters.
AT-S25 Management Software User’s Guide The RSTP Configuration Spanning Tree window in Figure 86 is displayed. Figure 91 RSTP Configuration Spanning Tree Window 3. Enter or modify the RSTP configuration settings as desired. For description of the parameters displayed in this window, refer to Table 8, STP and RSTP Parameters on page 230. 4. Click Apply. Changes are immediately activated on the switch.
Section III: Web Browser Management The RSTP Settings window displayed in Figure 88 is displayed. Figure 92 RSTP Settings Window 3. Enter or modify the RSTP settings as desired. For description of the parameters in this window, refer to Table 8, STP and RSTP Parameters on page 230. 4. Click Apply. Note All changes to a port’s RSTP settings, with the exception of port cost, are activated immediately. A change to the port cost value requires you to reset the switch.
AT-S25 Management Software User’s Guide Displaying RSTP Status and Settings Displaying Bridge’s RSTP Status and Settings To display a bridge’s STP parameter status and settings, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Monitoring menu, select Layer 2 tab. 3. From the Layer 2 window, select the Spanning Tree tab. The Spanning Tree window in Figure 89 is displayed.
Section III: Web Browser Management 2. Click Settings, the RSTP Settings window displayed in Figure 94 is displayed. Figure 94 Monitoring - RSTP Settings Window The parameters displayed in this window are for viewing purpose only. For description of these parameters, refer to Table 8, STP and RSTP Parameters on page 230.
Chapter 22 Virtual LANs This chapter explains how to create, modify, and delete VLANs from a web browser management interface. This chapter also explains how to change a switch’s VLAN operating mode. Note For background information on VLANs and on the Basic VLAN mode, refer to Chapter 10, Virtual LANs.
Section III: Web Browser Management Creating a VLAN To create a new VLAN, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration menu, select Layer 2. 3. From the Layer 2 window, select the VLAN tab. The VLAN window in Figure 95 is displayed. Figure 95 Configuration - VLAN Window 4. Click Add. The Add New VLAN window in Figure 96 is displayed. Figure 96 Add VLAN Window 5. Enter the parameters in the window as desired.
AT-S25 Management Software User’s Guide The parameters are described in the table below: PARAMETER DESCRIPTION VID A VID value for the new VLAN. The range of the VID value is 2 to 2048. The default will be the next available VID number on the switch. If this will be a unique VLAN in your network, its VID must be unique as well.If the VLAN will be part of a larger VLAN that spans multiple switches, its VID value should be the same on each switch.
Section III: Web Browser Management Modifying a VLAN To modify a VLAN, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration menu, select Layer 2. 3. From the Layer 2 window, select the VLAN tab. The VLAN window in Figure 95 on page 244 is displayed. 4. Click the button next to the name of the VLAN you wish to modify. 5. Click Modify. The View/Update VLAN configuration window in Figure 97 on page 246 is displayed. Figure 97 View/Update VLAN Window 6.
AT-S25 Management Software User’s Guide Removing an untagged port from the Default_VLAN without assigning it to another VLAN will leave the port as an untagged member of no VLAN. The modified VLAN is now ready for network operations.
Section III: Web Browser Management Deleting VLANs To delete a VLAN from the switch, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration menu, select Layer 2. 3. From the Layer 2 window, select the VLAN tab. The VLAN window in Figure 95 on page 244 is displayed. 4. Click the circle next to the name of the VLAN you wish to delete. 5. Click Remove. A confirmation prompt in Figure 98 is displayed. Figure 98 Deleting VLAN Confirmation Prompt 6.
AT-S25 Management Software User’s Guide A confirmation prompt in Figure 99 is displayed. Figure 99 Clearing All VLANs Confirmation Prompt 5. Click OK to delete all the VLANs or Cancel to cancel the procedure. If you click OK, all VLANs except for the Default_VLAN are deleted from the switch. The ports in the VLANs are returned to the Default_VLAN as untagged ports.
Section III: Web Browser Management Displaying VLANs To display all the existing VLANs on a switch, perform the following procedure: 1. From the Home page, select Monitoring. 2. From the Monitoring page, select Layer 2. 3. From the Layer 2 page, select the VLAN tab. The VLAN window in Figure 100 is displayed. Figure 100 Monitoring - VLAN Window 4. Click the button next to the name of the VLAN you wish to view. 5. Click View. The View VLAN window in Figure 101 is displayed.
AT-S25 Management Software User’s Guide The parameters displayed in this window are for viewing purpose only. For information on these parameters, refer to Creating a VLAN on page 244. 6. Click Cancel to return to the previous menu.
Section III: Web Browser Management Setting the Switch’s VLAN Mode This section contains the procedure for setting a switch’s VLAN mode. You could configure a switch to support port-based and tagged VLANs or to operate in the Basic VLAN mode. Note Refer to Chapter 10, Virtual LANs, for descriptions of port-based and tagged VLANs and the Basic VLAN mode. To set the switch’s VLAN mode, perform the following procedure: 1. From the Home Page, select Configuration.
AT-S25 Management Software User’s Guide 3. In the Switch Mode section of the window, click either Basic or Tagged. ❑ If you select Basic, the switch will operate in the Basic VLAN mode. ❑ If you select Tagged, which is the default, the switch will support both port-based VLANs and tagged VLANs. 4. Click Apply. 5. Click Reset to reset the switch. Note A change to VLAN status is not activated until the switch is reset.
Section III: Web Browser Management Changing a PVID Value The procedure in this section explains how to change a PVID value for a port. As explained in Port-based VLAN Overview on page 118, a port receives a PVID when it is assigned as an untagged port to a VLAN. A port’s PVID will be the same as the VLAN’s VID to which it has been assigned. For example, if you assign Port 4 on the switch as an untagged port to a VLAN with a VID of 7, the port is assigned a PVID also of 7.
AT-S25 Management Software User’s Guide 6. Enter the parameters in the window as desired. The parameters are described in the table below: PARAMETER DESCRIPTION Port VLAN ID Select the port VLAN ID. Priority Specify which priority level queue all tagged and untagged frames received on the port go to. Possible settings for this parameter are: • Level 0 (Low) - Low priority queue.
Chapter 23 MAC Address Table This chapter contains instructions on how to view the dynamic and static and multicast addresses in the MAC Address Table of the switch. This chapter contains the following procedure: ❑ Viewing the MAC Address Table on page 257 ❑ Adding Static and Multicast MAC Addresses on page 259 ❑ Deleting MAC Addresses on page 260 ❑ Changing the Aging Time on page 261 Note For background information on MAC addresses, refer to MAC Address Overview on page 148.
AT-S25 Management Software User’s Guide Viewing the MAC Address Table To view the MAC Address Table, perform the following procedure: 1. From the Home page, select either Configuration or Monitoring. 2. From either the Configuration or the Monitoring page, select Layer 2. 3. From the Layer 2 page, select the MAC Address tab. The MAC Address window Figure 104 is displayed.
Section III: Web Browser Management PARAMETER DESCRIPTION View by Module & Port View any MAC addresses that have been assigned to a particular module and port. View by VLAN ID View any MAC addresses that have been assigned to a VLAN ID. View Port & Module number of MAC Address View the port, module number, and VLAN ID where a MAC Address is assigned to. 4. Once you have selected one of the options, click View. The MAC Address Table in Figure 105 is displayed.
AT-S25 Management Software User’s Guide Adding Static and Multicast MAC Addresses This section contains the procedure for assigning static address to the ports on the switch. You could assign up to 255 static MAC addresses per port. To add a static address to the MAC Menu, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 2. 3. From the Layer 2 page, select the MAC Address tab.
Section III: Web Browser Management Deleting MAC Addresses To delete a static, dynamic, or multicast MAC address from the switch, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 2. 3. From the Layer 2 page, select the MAC Address tab. The MAC Address window in Figure 104 on page 257 is displayed. 4. Display the MAC addresses on the switch by selecting one of the options.
AT-S25 Management Software User’s Guide Changing the Aging Time The switch uses the aging time to delete inactive dynamic MAC addresses from the MAC Menu. When the switch detects that no packets have been sent to or received from a particular MAC address in the table after the period specified by the aging time, the switch deletes the address. This prevents the table from becoming full of addresses of nodes that are no longer active. To adjust the aging time, perform the following procedure: 1.
Section III: Web Browser Management 3. In the MAC address aging time text box, enter the new value in seconds. The default setting for the aging time is 300 seconds (5 minutes). 4. Click Apply to accept the new value of the MAC address aging time.
Chapter 24 Class of Service This chapter contains instructions on how to configure CoS. This chapter contains the following procedure: ❑ Configuring CoS on page 264 Note For background information on CoS, refer to Class of Service Overview on page 163.
Section III: Web Browser Management Configuring CoS To configure CoS, perform the following procedure: 1. From the Home page, select Configuration. 2. From the Configuration page, select Layer 2. 3. From the Layer 2 page, select the COS tab. A graphical image of an AT-8316F or an AT-8324 Fast Ethernet Switch is displayed. 4. Click the port where you wish to configure the CoS. You could select only one port at a time. A selected port turns white. (To deselect a port, click it again.) 5. Click Modify.
AT-S25 Management Software User’s Guide The parameters are described in the table below: PARAMETER DESCRIPTION Port VLAN ID Select the port VLAN ID. Priority Specify which priority level queue all tagged and untagged frames received on the port go to. Possible settings for this parameter are: • Level 0 (Low) - Low priority queue.
Chapter 25 IGMP Snooping This chapter describes how to configure the IGMP snooping feature on the stack. Note For background information on this feature, refer to IGMP Snooping Overview on page 167.
AT-S25 Management Software User’s Guide Configuring IGMP Snooping To configure IGMP snooping from a web browser management interface, perform the following procedure: 1. From the Home page, select Configuration. The Configuration window is displayed with the System menu option selected by default. 2. If the System menu option is not selected, select it and then select the IGMP tab. The IGMP window in Figure 109 is displayed. Figure 109 Configuration - IGMP Window 3.
Section III: Web Browser Management PARAMATER Multicast Host Topology DESCRIPTION Defines whether there is only one host node per stack port or multiple host nodes per port. Possible settings for this parameter are: • Single-Host/Port (Edge) is appropriate when there is only one host node connected to each port on the stack.
AT-S25 Management Software User’s Guide PARAMATER Maximum Multicast Groups DESCRIPTION Specifies the maximum number of multicast groups the stack will learn. The range is 1 to 2048 groups. The default is 256 multicast groups. This parameter is useful with networks that contain a large number of multicast groups. You could use the parameter to prevent the stack’s MAC Address Table from filling up with multicast addresses, leaving no room for dynamic or static MAC addresses.
Section III: Web Browser Management Displaying a List of Host Nodes and Multicast Routers You could use the AT-S25 software to display a list of the multicast groups on a stack, as well as the host nodes. You could also view the multicast routers. A multicast router is a router that is receiving multicast packets from a multicast application and transmitting the packets to host nodes. To view host nodes and multicast routers, perform the following procedure: 1. From the Home Page, select Monitoring.
AT-S25 Management Software User’s Guide The View Multicast Hosts List window in Figure 111 is displayed. Figure 111 View Multicast Hosts List Window The View Multicast Hosts List window is displayed with the following information. This information for viewing purposes only. PARAMATER DESCRIPTION Multicast Group The multicast address of the group. VLAN ID The VID of the VLAN in which the port is an untagged member. Module The selected module.
Section III: Web Browser Management 4. To view the multicast routers, click View Multicast Routers List and then click View. The View Multicast Routers List window in Figure 112 is displayed. Figure 112 View Multicast Routers List Window The View Multicast Routers List window is displayed with the following information. This information for viewing purposes only. PARAMATER 272 DESCRIPTION Module The selected module.
Appendix A AT-S25 Default Settings This appendix lists the AT-S25 factory default settings. Settings Default IP Address Subnet Mask 0.0.0.0 255.255.0.0 Gateway Address 0.0.0.
AT-S25 Default Settings Settings IGMP Snooping Status Topology Host/Router Time-out Interval Maximum Multicast Groups Management Interface Manager Login Name (web browser interface only) Manager Password Operator Login Name (web browser interface only) Operator Password Time Out Value Twisted Pair Ports Status Duplex Mode Speed Flow Control Broadcast Packets Security VLANs Default VLAN Name VID Basic VLAN Mode Management Access Telnet SNMP TFTP RS-232 Port Data Bits Stop Bits Parity Flow Control Data Rate
Index A aging time changing, 161, 261 defined, 149 AT-8316F/MT Ethernet switch port groups, 76 AT-8324 Ethernet switch port groups, 76 AT-S25 default settings, 55, 207, 273 AT-S25 software security, 48 AT-S25 software updates downloading from a local session, 17, 183, 188 AT-S25 version number, 57 Automatic port security level, 67 Auto-Negotiation, 211 B Basic VLAN mode defined, 128 setting, 252 bootloader version number, 57 BOOTP activating, 17, 46, 200 defined, 46 BPDU, see bridge protocol data unit brid
local management interface defined, 28 quitting, 37 Lock All Ports security level, 68 M MAC address table, 147, 257 management access levels, 32, 49 Management Information Base (MIB), 31 management VLAN, 145 Manager access, 32, 49 Manager password, 49 MIBs, supported, 31 multicast groups, maximum, 171, 269 multicast MAC address adding, 160, 259 deleting, 158, 260 multicast router, displaying, 173, 270 O On 35 Operator access, 32, 49 Operator password, 49 P password changing, 44, 198 default, 36, 39, 48, 192
AT-S25 Management Software User’s Guide T tagged VLAN creating, 130, 136, 244 defined, 124 deleting all, 142 deleting, 140, 248 displaying, 139, 250 example, 126 modifying, 137, 246 Telnet management interface defined, 29 quitting, 40 starting, 39 TFTP, downloading and uploading files, 17, 183, 188 To 63 U user name, default, 36, 39, 48, 192 V version number, AT-S25, 57 virtual LAN creating, 130, 135, 136, 244 defined, 116 deleting all, 142 deleting, 140, 248 displaying, 139, 250 mode, changing, 252 modify
