Smart Switch Software User Manual GS748T NETGEAR, Inc.
© 2007 by NETGEAR, Inc. All rights reserved. Trademarks NETGEAR, the NETGEAR logo, and Auto Uplink are trademarks or registered trademarks of NETGEAR, Inc. Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation. Other brand and product names are registered trademarks or trademarks of their respective holders. Portions of this document are copyright Intoto, Inc.
Product and Publication Details Model Number: GS748T Publication Date: October 2007 Product Family: Smart Switch Series Product Name: GS748T Smart Switch Home or Business Product: Business Language: English Publication Part Number: 202-10331-01 Publication Version Number: 1.0 iii v1.
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Contents Smart Switch Software User Manual GS748T About This Manual Who Should Use this Book ............................................................................................... ix How to Use This Book ...................................................................................................... ix Conventions, Formats and Scope ..................................................................................... x HTML Manual Navigation ..................................................
Managing Your System Configuration ............................................................................3-5 Saving and Restoring Your Configuration ................................................................3-5 Performing a Factory Reset or a Device Reboot .....................................................3-6 Chapter 4 Configuring the Switch Configuring Ports ............................................................................................................
Port-based VLANs ......................................................................................................... B-3 Port-based VLAN Example Configuration ............................................................... B-3 VLAN Configuration Results ................................................................................... B-4 Appendix C Network Cabling Fast Ethernet Cable Guidelines .....................................................................................
viii Contents v1.
About This Manual The NETGEAR® Smart Switch Software User Manual GS748T describes how to install, configure, operate, and troubleshoot the GS748T Smart Switch using its included software. This book describes the software configuration procedures and explains the options available within those procedures. Who Should Use this Book The information in this manual is intended for readers with intermediate to advanced system management skills.
Smart Switch Software User Manual GS748T • Appendix C, “Network Cabling” gives cabling requirements and describes some details of port cabling connections. Note: Refer to the product release notes for the GS748T switch Software application level code. The release notes detail the platform specific functionality of the Switching, SNMP, Config, and Management packages.
Smart Switch Software User Manual GS748T Warning: This is a warning of possible malfunction or damage to the equipment. Danger: This is a safety warning. Failure to take heed of this notice may result in personal injury or death. • Scope.
Smart Switch Software User Manual GS748T How to Print this Manual To print this manual, you can choose one of the following options, according to your needs. • Printing a Page from HTML. Each page in the HTML version of the manual is dedicated to a major topic. Select File → Print from the browser menu to print the page contents. • Printing from PDF. Your computer must have the free Adobe Acrobat reader installed in order to view and print PDF files.
Chapter 1 Switch Management Overview Switch Management Interface This section gives an overview of switch management, including the methods you can use to manage your NETGEAR GS748T Smart Switch. Your NETGEAR GS748T Smart Switch contains an embedded web server and management software for managing and monitoring switch functions.
Smart Switch Software User Manual GS748T Table 1-1.
Chapter 2 Using the Smartwizard Discovery Utility This section leads you through the steps necessary to begin managing your GS748T Smart Switch. It covers how to install in a network that contains a DHCP server and one without DHCP. Network with DHCP server To install the switch in a network with a DHCP server, proceed as follows: 1. Connect the GS748T switch to a DHCP network. 2. Power on the switch by connecting its power cord. 3. Install the Smartwizard Discovery Utility program on your computer. 4.
Smart Switch Software User Manual GS748T 6. Make a note of the displayed IP address assigned by the DHCP server. You will need this value to access the switch directly from a web browser (without using Smartwizard Discovery). 7. Select your switch by clicking on the line that displays the switch address. Then click Web Access. The discovery utility displays a login window similar to the following: Figure 2-2 8. Enter the default password which is password.
Smart Switch Software User Manual GS748T Manually Assigning Network Parameters If your network has no DHCP service, you must assign a static IP address to your switch. If you choose, you can assign a static IP address to the switch even if your network has DHCP service. To manually assign a static IP address to your switch: 1. Connect the GS748T Smart Switch to your existing network. 2. Power on the switch by plugging in the power cord (Default IP is 192.168.0.239). 3.
Smart Switch Software User Manual GS748T Configuring Your NIC Settings The settings of your NIC on the host that accesses the GS748T Smart Switch, under MS Windows OS, are made with entries into the Windows screens shown below. For comparison, the settings of the switch are also shown although they do not appear in the Windows view. Figure 2-4 To modify your NIC settings (you need Windows Administrator privilege to change these settings): 1.
Smart Switch Software User Manual GS748T Figure 2-5 Smartwizard Utilities Alternatively, from the Smartwizard main page of Figure 2-1 you can access the following features: • Password Change • Firmware Upgrade Password Change You can set a new password of up to 20 ASCII characters. 1. On the Smartwizard Utility screen, click Password Change. The Password Change screen. appears. You can set a new password. In this process, you are required to enter the old password and to confirm the new one. 2.
Smart Switch Software User Manual GS748T have downloaded or otherwise obtained the firmware upgrade and that you have it available as a binary file on your computer. This procedure uses the TFTP protocol to implement the transfer from computer to switch. To upgrade your firmware: 1. After selecting the switch you want to upgrade, click Firmware Upgrade (see Figure 2-1). The following screen will display: Figure 2-6 2.
Smart Switch Software User Manual GS748T Exit Click Exit from the Switch Setting section to close the Smartwizard Discovery Utility program. Using the Smartwizard Discovery Utility v1.
Smart Switch Software User Manual GS748T 2-8 Using the Smartwizard Discovery Utility v1.
Chapter 3 Basic Web Management This section contains information for performing basic configuration using your web browser. It also describes how to backup your configuration and how to reboot or reset your router if necessary.
Smart Switch Software User Manual GS748T Accessing the Switch Management Home Screen You can access the home screen for the GS748T Smart Switch from any PC with a web browser. To start the application: 1. Open a web browser. 2. Enter the device IP address in the address bar. 3. Press Enter. The Login page appears as shown below. Figure 3-1 4. Enter the password (the factory default is password) and click Login. The GS748T switch System > Management home page is displayed as shown below.
Smart Switch Software User Manual GS748T • Cancel. Cancels changes made to that screen. Figure 3-2 System Information Settings The main screen, System > Management > System Information, shows the condition of the functions available in the switch. Click Refresh at the bottom of the pane to display updated status information. This information is described briefly as follows: • Product Name. The name of the switch. • Firmware Version. The version of the firmware currently installed on the switch.
Smart Switch Software User Manual GS748T IP Configuration 1. Select the System > Management > IP Configuration screen shown below to set your IP Configuration. Figure 3-3 2. Select the Get Dynamic IP from DHCP Server radio box to enable the DHCP Server, or select the Static IP Address to set up a static IP address for the switch.
Smart Switch Software User Manual GS748T To change password: 1. Select Security > Management Security. The User Configuration > Change Password screen will display. 2. In the Old Password field, enter the current password. 3. In the New Password field, enter the new password, and then reenter your new password in the Re-Type New Password field to confirm the change. 4. Click Apply to enable the new password.
Smart Switch Software User Manual GS748T 4. Click Save. When the file location field displays, specify the file name and path for saving the configuration file. Figure 3-5 File Download enables you to restore the saved configuration file from your PC. To restore your saved configuration file: 1. Select Maintenance > Download. The File Download screen will appear: 2. Click Browse and select the configuration file that you want to restore on the switch. 3. Click Apply to restore your file.
Smart Switch Software User Manual GS748T • You want to make a major configuration change for another reason. Warning: Restoring Factory Defaults erases any prior user configuration. You can perform a Factory Reset using either of the following methods: • From the main menu, Maintenance > Reset > Factory Default. The Factory Default screen will display.
Smart Switch Software User Manual GS748T 3-8 Basic Web Management v1.
Chapter 4 Configuring the Switch The navigation tabs across the top of the user interface provide access to all of the submenu screens which allow you to manage your GS748T Smart Switch.
Smart Switch Software User Manual GS748T 2. Select the row of the port that you want to configure. Then, at the top of screen, enter the following information for the selected port: • Type a description for the port in the Port Description field. • From the Port Speed pull-down menu, select the rate for the port: – 100M (100 Mbps) – 10M (10 Mbps) – Auto (Auto will set the speed to 1000Mbps) – Disable (disable the port) 3.
Smart Switch Software User Manual GS748T Figure 4-8 Configuring the Link Aggregation Group (LAG) Link Aggregation Groups (otherwise known as Port Trunking) enables multiple links between switches to work as one virtual link (aggregate link) to provide greater bandwidth than would be available by confining the traffic to a single port. LAGs can be defined for similar port types only. For example, a 10/100 port cannot form a LAG with a gigabit port. Up to 10 LAGs can be operating at the same time.
Smart Switch Software User Manual GS748T 4. Click Apply. Figure 4-9 The LAG Membership table displays the port members in each LAG. You can also specify port members for LAGs. When specifying LAGs, the following policies apply: • Each port can belong to only one LAG. • Each LAG can have up to 8 ports. • Ports in a LAG must have the same speed and be in the same VLAN group. To configure port membership of a LAG: 1. Select Switching > LAG > LAG Membership. The LAG Membership screen will display. 2.
Smart Switch Software User Manual GS748T Figure 4-10 Note: The selected LAG ID port must correspond to VLAN group IDs. Setting Up SNMP SNMP (Simple Network Management Protocol) is a transport protocol used for network management. The protocol is used in communication between a Manager—the management station—and an agent within the managed device, in this case your switch.
Smart Switch Software User Manual GS748T • T3: Link Up/Down – The switch generates an SNMP trap when one of its ports changes its link status You can specify the SNMP management station that can access the MIB of the switch and to which the switch will send the trap. When adding a management station, be aware that: • You can specify up to four management station IP addresses. • The switch will respond only to requests from a computer or management station with an IP address that is in the list.
Smart Switch Software User Manual GS748T 2. Modify the settings in the top row and click Apply. Configuring and Creating VLANs A Virtual Local Area Network (VLAN) is a means of electronically separating ports on the same switch from a single broadcast domain into separate broadcast domains. By using VLANs, users can group nodes by logical function instead of physical location. For example, Engineering and Accounting department traffic can be separated from one another.
Smart Switch Software User Manual GS748T Adding and Configuring IEEE 802.1Q VLAN Groups Depending on the VLAN type selected in the VLAN Type Configuration table, you can create 256 IEEE 802.1Q-based VLANs or 48 port-based VLANs. To create a VLAN: 1. Select Switching > VLAN > VLAN Configuration from the main menu. The VLAN Configuration screen will display. 2. Select the IEEE.802.1Q radio box and click Apply. Figure 4-11 3. In the VLAN ID field, specify a VLAN ID from 1 to 4094.
Smart Switch Software User Manual GS748T • Tag All: Add all the ports to this VLAN and tag all egress packets. • Remove All: Remove all the ports from this VLAN. 3. Click the Unit link to display all available ports. 4. Toggle the check box for each port to change its membership and tag setting: • An empty check box indicates that the port is not a member of this VLAN. • T indicates that the egress packet is tagged. • U indicates that the egress packet is untagged. 5. Click Apply.
Smart Switch Software User Manual GS748T 3. Click Apply. Figure 4-13 Configuring Port-Based VLANs Unlike 802.1Q based VLAN, an ingress packet with an 802.1Q tag is ignored and preserved. To modify port-based VLAN membership: 1. Select Switching > VLAN > VLAN Configuration from the main menu. The VLAN Configuration screen will display. Figure 4-14 2. Ensure that the Port-Based radio box has been enabled for VLAN Type. 3. In the VLAN Name field, assign a name to help you to identify this VLAN. 4.
Smart Switch Software User Manual GS748T To modify a Port-Based VLAN membership: 1. Select VLAN Membership. The VLAN Membership screen will display all port-based VLAN members. 2. From the VLAN Identifier pull-down menu, select the VLAN that you want to modify. You can also click the Unit link to display all available ports. 3. Select or clear the check box for the port for the VLAN. 4. Click Apply. To delete a VLAN: Select the VLAN you want to remove and click Delete.
Smart Switch Software User Manual GS748T resultant path between nodes determined by RSTP is the same as that eventually determined by STP. Use the Bridge Settings table to manage attributes related to the Spanning Tree Protocol. • Bridge Priority. The priority value of this switch. After exchanging BPDUs with other STPenabled devices, the device with the lowest priority value becomes the root bridge. • Bridge Max Age. The maximum age of the current bridge.
Smart Switch Software User Manual GS748T The Port Configuration table displays the current status of individual ports. You can also configure ports from this table. To modify port settings: 1. Select the Port Configuration link. The RSTP Port Configuration screen will display. 2. Select the interface or port you want to modify. 3. Modify the settings in the top row: • Path Cost. Displays the cost of this port.
Smart Switch Software User Manual GS748T Establishing Multicast Groups You can specify specific ports and VLANs for receiving Multicast packets with specific MAC addresses. The MAC addresses are IPv4 Multicast Addresses (RFC 1112A) formatted as: 01:00:5E-XX-XX-XX. A maximum of 64 groups is supported. IGMP Snooping IGMP (Internet Group Management Protocol) specifies how to register a host to a router in order to receive specific multicast traffic.
Smart Switch Software User Manual GS748T • VLAN ID. Specifies the VLAN ID. This field is only applicable if 802.1Q VLAN mode is used. • Multicast Entry. Specifies the multicast group MAC address associated with the VLAN. 3. Click Add. Figure 4-17 To delete a static multicast entry: 1. Select the checkbox adjacent to the multicast group you want to delete. 2. Click Delete. Multicast Group Membership The Multicast Group Membership table displays the ports associated with each multicast group.
Smart Switch Software User Manual GS748T Figure 4-18 To remove a multicast group: 1. In the line of the table that specifies the group, check the Delete box. 2. Click Apply to remove the group. Enabling Jumbo Frames Jumbo Frames are not an approved standard Ethernet frame size, so you must ensure that all of your networking equipment can support these nonstandard jumbo frames to prevent them from being dropped. The Jumbo Frame screen allows you to enable or disable jumbo frame support.
Smart Switch Software User Manual GS748T Setting Rate Limits Rate Limiting determines the bandwidth of ingress and egress traffic for a specific port.1 There are 11 data rate options in the range 512K bps to 1000M bps, including a disable option that applies no limit to the data rate. Ingress and egress rates are separately configurable. To configure the rate limit for a specific port: 1. Select QoS > Basic > Rate Limit. The Rate Limit | Rate Control Setting screen will display. 2.
Smart Switch Software User Manual GS748T Two possible system mode implementations of QoS are supported: • IEEE 802.1p-based QoS. • DSCP-based (Differentiated Services Code Point) QoS. To specify the QoS Global system mode: 1. Select QoS > Basic > QoS Global Configuration from the main menu. The QoS Global Configuration screen will display. 2. Select either the 802.1p Based radio box or the DSCP Based radio box. 3. Click Apply. IEEE 802.1p-Based QoS IEEE 802.
Smart Switch Software User Manual GS748T 2. From each 802.1p priority value pull-down menu, select one of the four hardware priority queues. 3. Click Apply. Differentiated Services Code Point (DSCP)-based QoS The DSCP 6-bit field in an IP packet header enables levels of service to be assigned to network traffic according to the field’s binary value. This 6-bit field comprises three IP Precedence MSBs with a least-significant 3-bit expansion field as defined in RFC 2474.
Smart Switch Software User Manual GS748T Figure 4-21 Enabling Storm Control The Storm Control feature enables you to prevent network performance from being disrupted by specifying the threshold of ingress broadcast or multicast and broadcast packets on each port. The traffic source may be Multicast and Broadcast; Broadcast only; or Unknown Unicast, Multicast or Broadcast—or it may be disabled. A selected received threshold rate of between 1000 and 65535 packets per second may be specified in each case.
Smart Switch Software User Manual GS748T The Storm Control Settings table contains system-wide configuration parameters for storm control. To configure storm control: 1. Select Security > Traffic Control. The Storm Control screen will display. Figure 4-22 2. From the Ingress Control Mode pull-down menu, select the type of the packet storm: • Disable (to turn off storm control) • Unknown Unicast, Multicast and Broadcast • Multicast and Broadcast • Broadcast Only 3.
Smart Switch Software User Manual GS748T 3. In the top row, from the Status pull-down menu, select either Enable or Disable. 4. Click Apply. Configuring the IP Access List The IP Access List table allows you to limit and specify the IP addresses that can access the management portion of the switch. An empty list means that all IP addresses are allowed to access the switch. Otherwise, the switch will respond only to requests from computers with an IP address in the list.
Smart Switch Software User Manual GS748T 2. Specify the trusted MAC address parameters in the configuration row: • Interface. From the Interface pull-down menu, select the interface or port that you want to have this feature. • MAC Address. Specify the trusted source MAC address. • VLAN ID. Enter a VLAN ID that the interface belongs to if the 802.1Q VLAN mode is enabled. 3. Click Add. To delete a trusted MAC address: 1.
Smart Switch Software User Manual GS748T Figure 4-23 Viewing Packet Statistics The Port Statistics screen shows reports of packet traffic and packet errors formatted as follows: • Port Selection: The port number on the switch—selected from the Port pull-down menu. • Statistics: Detailed Tx and Rx statistical information, by port. • Summary Statistics: All ports Tx and Rx statistics summarized. Presents the information from each port’s internal counters. To view statistics for a single port: 1.
Smart Switch Software User Manual GS748T Figure 4-24 Configuring the Switch 4-25 v1.
Smart Switch Software User Manual GS748T 4-26 Configuring the Switch v1.
Appendix A Specifications and Default Values GS748T Smart Switch Specifications The GS748T Smart Switch conforms to the TCP/IP, UDP, HTTP, ICMP, TFTP, DHCP, 802.1D, 802.1p, and 802.1Q standards. Table A-1. GS748T Smart Switch Specifications Feature Value Interfaces 48G (P01 - P48) Fiber Optic 4 Mini-GBIC Combo (P45f - P48f) PoE N/A Flash Memory Size 2MB SRAM Size and Type 16MB DDR Table A-2.
Smart Switch Software User Manual GS748T GS748T Smart Switch Features and Defaults Table A-3. Port Characteristics Feature Sets Supported Default Auto-Negotiation / Static Speed / Duplex 48 (per-port) Auto-Negotiation Auto MDI/MDIX N/A Enabled 802.3x flow control / Back Pressure 48 (per-port) Enabled Port Mirroring 1 Disabled Port Trunking (Aggregation) 10 Disabled 802.1D Spanning Tree 1 Disabled 802.1w RSTP 1 Disabled IGMP Snooping 1 Disabled Static 802.
Smart Switch Software User Manual GS748T Table A-5. Security (continued) Feature Sets Supported Default Trust Matadors Filter 256 Disabled Port -MAC lock down 48 (per port) Disabled Management VLAN 1 0 Feature Sets Supported Default Rate control 48 (per port) Disabled Storm control 1 (per switch) Disabled Jumbo frame 48 (per port) Disabled Feature Sets Supported Default DHCP\Manual IP 1 192.168.0.
Smart Switch Software User Manual GS748T Table A-9. Management Feature Sets Supported Default Smartwizard N/A Enabled Statistics 48 (per port) N/A A-4 Specifications and Default Values v1.
Appendix B Virtual Local Area Networks (VLANs) A Local Area Network (LAN) can generally be defined as a broadcast domain. Hubs, bridges or switches in the same physical segment or segments connect all end node devices. End nodes can communicate with each other without the need for a router. Routers connect LANs together, routing the traffic to the appropriate port.
Smart Switch Software User Manual GS748T IEEE 802.1Q VLANs Packets received by the switch are treated in the following way: • • • • • When an untagged packet enters a port, it is automatically tagged with the port’s default VLAN ID tag number. Each port has a default VLAN ID setting that is user-configurable (the default setting is 1). The default VLAN ID setting for each port can be changed in the PVID Setting page.
Smart Switch Software User Manual GS748T 4. The following situations produce results as described: • If an untagged packet enters Port 1, the switch tags it with a VLAN tag value 10. The packet has access to Port 2 and Port 3. The outgoing packet is stripped of its tag to leaves Port 2 as an untagged packet. For Port 3, the outgoing packet leaves as a tagged packet with a VLAN tag value of 10. • If a tagged packet with a VLAN tag value 10 enters Port 3, the packet has access to Port 1 and Port 2.
Smart Switch Software User Manual GS748T • • • • • • Setting up third VLAN group (Marketing), VLAN ID = 03, with membership of ports 7~14, 25. Setting up fourth VLAN group (Accounting), VLAN ID = 04, with membership of ports 19~20, 25. Setting up first VLAN group (IT), VLAN ID = 01, with membership of all ports. Since VLAN ID 01 has been setup by default, you will have to remove the ports that belong to all other VLAN groups except port 25.
Appendix C Network Cabling This appendix provides specifications for cables used with a NETGEAR GS748T Smart Switch. Fast Ethernet Cable Guidelines Fast Ethernet uses UTP cable, as specified in the IEEE 802.3u standard for 100BASE-TX.The specification requires Category 5 UTP cable consisting of either two-pair or four-pair twisted, insulated copper conductors bound in a single plastic sheath. Category 5 cable is certified up to 100 MHz bandwidth.
Smart Switch Software User Manual GS748T Category 5 Cable Specifications Ensure that the fiber cable is crossed over to guarantee link. Table C-1 lists the electrical requirements of Category 5 UTP cable. Table C-1. Electrical Requirements of Category 5 Cable Specifications Category 5 Cable Requirements Number of pairs Four Impedance 100 ± 15% Mutual capacitance at 1 KHz 5.6 nF per 100 m Maximum attenuation (dB per 100 m, at 20° C) at 4 MHz: 8.2 at 31 MHz: 11.7 at 100 MHz: 22.
Smart Switch Software User Manual GS748T Figure C-1 Figure C-2 illustrates crossover twisted pair cable. Figure C-2 Patch Panels and Cables If you are using patch panels, make sure that they meet the 100BASE-TX requirements. Use Category 5 UTP cable for all patch cables and work area cables to ensure that your UTP patch cable rating meets or exceeds the distribution cable rating. To wire patch panels, you need two Category 5 UTP cables with an RJ-45 plug at each end, as shown in Figure C-3.
Smart Switch Software User Manual GS748T Figure C-3 Note: Flat “silver satin” telephone cable may have the same RJ-45 plug. However, using telephone cable results in excessive collisions, causing the attached port to be partitioned or disconnected from the network. Using 1000BASE-T Gigabit Ethernet over Category 5 Cable When using the new 1000BASE-T standard, the limitations of cable installations and the steps necessary to ensure optimum performance must be considered.
Smart Switch Software User Manual GS748T Length The maximum distance limitation between two pieces of equipment is 100 m, as per the original Ethernet specification. The end-to-end link is called the “channel.” TSB-67 defines the “Basic Link” which is the portion of the link that is part of the building infrastructure. This excludes patch and equipment cords. The maximum basic link length is 295 feet (90 m).
Smart Switch Software User Manual GS748T Patch Cables When installing your equipment, replace old patch panel cables that do not meet Category 5e specifications. As pointed out in the NEXT section, this near end piece of cable is critical for successful operation. RJ-45 Plug and RJ-45 Connectors In a Fast Ethernet network, it is important that all 100BASE-T certified Category 5 cabling use RJ45 plugs.
Smart Switch Software User Manual GS748T Table C-3. 100/1000 Mbps RJ-45 Plug and RJ-45 Connector Pin Assignments Pin Channel Description 1 2 A Rx/Tx Data + Rx/Tx Data 3 6 B Rx/Tx Data + Rx/Tx Data 4 5 C Rx/Tx Data + Rx/Tx Data 7 8 D Rx/Tx Data + Rx/Tx Data Conclusion For optimum performance of your 1000BASE-T product, it is important to fully qualify your cable installation and ensure that it meets or exceeds ANSI/EIA/TIA-568-A:1995 or ISO/IEC 11801:1995 Category 5 specifications.
Smart Switch Software User Manual GS748T C-8 Network Cabling v1.
