SW3800.BK Page i Tuesday, May 5, 1998 5:20 PM ® http://www.3com.com/ Part No. DUA1691-0AAA01 100004-00 Rev.
SW3800.BK Page ii Tuesday, May 5, 1998 5:20 PM 3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145 Copyright © 3Com Corporation, 1998. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without permission from 3Com Technologies.
SW3800.BK Page iii Tuesday, May 5, 1998 5:20 PM VCCI Statement Information To The User If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: ■ Reorient the receiving antenna. ■ Relocate the equipment with respect to the receiver. ■ Move the equipment away from the receiver.
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SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM ABOUT THIS GUIDE About This Guide provides an overview of this guide, describes guide conventions, tells you where to look for specific information and lists other publications that may be useful. Introduction This guide provides the required information to install and configure the SuperStack® II Switch 3800 (3C16910). This guide is intended for use by network administrators who are responsible for installing and setting up network equipment.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM 2 ABOUT THIS GUIDE Finding Information in This Guide This table shows where to find specific information in this guide.
SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM Conventions Conventions 3 Table 1 and Table 2 list conventions that are used throughout this guide. Table 1 Icon Table 2 Notice Icons Notice Type Alerts you to... Note Important features or instructions Caution Risk of personal injury, system damage, or loss of data Warning Risk of severe personal injury Text Conventions Convention Description Screen displays This typeface represents information as it appears on the screen.
SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM 4 ABOUT THIS GUIDE Command Syntax Symbols Table 3 You may see a variety of symbols shown as part of the command syntax. These symbols explain how to enter the command, and you do not type them as part of the command itself. Table 3 summarizes command syntax symbols. Command Syntax Symbols Symbol Description angle brackets < > Enclose a variable or value. You must specify the variable or value.
SW3800.BK Page 5 Tuesday, May 5, 1998 5:20 PM Line-Editing Commands Line-Editing Commands Table 4 5 Table 4 describes the line-editing commands available using the command-line interface. Line-Editing Commands Command Description Backspace Deletes character to the left of cursor and shifts remainder of line to left. Delete or [Ctrl] + D Deletes character under cursor and shifts remainder of line to left. [Ctrl] + K Deletes characters from under cursor to the end of the line.
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SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM 1 SWITCH 3800 OVERVIEW This chapter describes the following: About the Switch 3800 ■ Switch 3800 features ■ How to use the Switch 3800 in your network configuration ■ Switch 3800 front view ■ Switch 3800 rear view ■ Factory default settings Network managers are currently faced with the challenge of creating networks that can provide high-speed and high performance to serve the needs of today’s network users.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM 1-2 CHAPTER 1: SWITCH 3800 OVERVIEW ■ Virtual LANs (VLANs) ■ Support for 64 VLANs on a single Switch 3800 ■ Support for IEEE 802.1Q tagging ■ Controls traffic (including broadcasts) ■ Provides extra security ■ Protocol-sensitive filtering for VLANs ■ Recognition of the Priority Access Control Enabled (PACE) bit set by 3Com Etherlink® adapters and the other devices that support PACE ■ Responds to 802.
SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM Summary of Features Port Connections 1-3 The Switch 3800 has 24 autosensing 10BASE-T/100BASE-TX ports with standard RJ-45 connectors, and supports one Gigabit Ethernet port, and one redundant Gigabit Ethernet port with standard Gigabit Interface Connectors (GBICs). You must have a 3Com-approved GBIC module (such as 3C16911) inserted to make use of these ports.
SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM 1-4 CHAPTER 1: SWITCH 3800 OVERVIEW In the event that the active main port fails or loses link status, the standby port is automatically activated. When the main port resumes operation, the standby port becomes inactive. This feature can be disabled. Load Sharing Load sharing with Switch 3800 Switches allows the user to increase bandwidth and resilience between Switches by using a group of ports to carry traffic in parallel between Switches.
SW3800.BK Page 5 Tuesday, May 5, 1998 5:20 PM Network Configuration Example 1-5 Priority Access Control Enabled (PACE) The Switch recognizes the PACE bit set by 3Com Etherlink® adapters and other devices supporting PACE. When enabled, traffic with these bits receives priority service from the Switch. Spanning Tree Protocol (STP) The Switch 3800 supports the IEEE 802.1d Spanning Tree Protocol (STP), which is a bridge-based mechanism for providing fault tolerance on networks.
SW3800.BK Page 6 Tuesday, May 5, 1998 5:20 PM 1-6 CHAPTER 1: SWITCH 3800 OVERVIEW Switch 1100 Switch 1100 Switch 1100 Switch 1100 Switch 3300 Switch 3800 To Backbone Key Ethernet Fast Ethernet Server Gigabit Ethernet Workstation Figure 1-2 Switch 3800 used in a backbone configuration The Switch 1100 on each floor has a 100Mbps full-duplex link to the Switch 3800. A Switch 3300 is connected to a group of servers on one floor of the building.
SW3800.BK Page 7 Tuesday, May 5, 1998 5:20 PM Switch 3800 Front View 1-7 In addition to providing a fast backbone between Ethernet LANs, Gigabit Ethernet equipped file servers and services may be directly attached to the Switch 3800 providing improved performance to the Ethernet desktop. Switch 3800 Front View Figure 1-3 shows the Switch 3800 front view.
SW3800.BK Page 8 Tuesday, May 5, 1998 5:20 PM 1-8 CHAPTER 1: SWITCH 3800 OVERVIEW Table 1-1 Media Types and Distances Standard Media Type Mhz/Km Rating Maximum Distance 10BASE-T Category 3 UTP Cable (10Mbps) 100BASE-TX Category 5 UTP Cable (100Mbps) 1000BASE-SX (850 nm) 62.5/125 um Multimode fiber 62.5/125 um Multimode fiber 50/125 um Multimode fiber 50/125 um Multimode fiber 160 200 400 500 220 275 500 550 1000BASE-LX (1300 nm) 62.
SW3800.BK Page 9 Tuesday, May 5, 1998 5:20 PM Switch 3800 Rear View Table 1-2 1-9 Switch 3800 LEDs (continued) LED Color Indicates Green The Switch 3800 is powered up. Yellow The Switch 3800 is indicating a power, overheat, or fan failure. Green The Switch 3800 is operating normally. Green flashing Software download is in progress. Power On Self Test (POST) is in progress. Yellow The Switch 3800 has failed its POST, or is indicating an overheat condition.
SW3800.BK Page 10 Tuesday, May 5, 1998 5:20 PM 1-10 CHAPTER 1: SWITCH 3800 OVERVIEW MAC Address This label shows the unique Ethernet MAC address assigned to this device. Console Port The console port (9-pin, “D” type connector) is used to connect a terminal and to carry out local out-of-band management. Factory Defaults Table 1-3 shows the factory defaults for the Switch 3800 features.
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SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM 2-2 CHAPTER 2: INSTALLATION AND SETUP Configuration Rules for Ethernet Installing the Switch 3800 Rack Mounting ■ Water or moisture cannot enter the case of the unit. ■ Temperature must be within the range of 0 to 40 degrees Celsius. ■ Air-flow around the unit and through the vents in the side of the case is not restricted. You should provide a minimum of 25mm (1-inch) clearance. ■ No objects are placed on top of the unit.
SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM Installing the Switch 3800 Figure 2-1 2-3 Fitting the mounting bracket 5 Repeat the three previous steps for the other side of the Switch. 6 Refer to the instructions that shipped with your rack, runners, shelf or tray to complete the installation of the Switch into the mounting rack. CAUTION: When using rack mounting runners, a shelf, or a tray, make sure that the ventilation holes on the side of the Switch are not obstructed. 7 Connect cables.
SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM 2-4 CHAPTER 2: INSTALLATION AND SETUP Stacking the Switch and Other Devices Up to four units can be placed on top of one another. If mixing Switch 3800, Switch 3000 FX, Switch 1000, Switch 1200, and other SuperStack® II hubs, the smaller units must be positioned at the top using rubber pads. This section relates only to physically placing the devices on top of each other. The Switch cannot be used to form a logical stack.
SW3800.BK Page 5 Tuesday, May 5, 1998 5:20 PM Connecting Equipment to the Console Port 2-5 Figure 2-2 shows the pin-outs for a 9-pin to RS-232 25-pin null modem cable.
SW3800.BK Page 6 Tuesday, May 5, 1998 5:20 PM 2-6 CHAPTER 2: INSTALLATION AND SETUP Powering-up the Switch To power-up the Switch, follow these steps: 1 Connect the power cable to the Switch. 2 Connect the power cable to the wall outlet. 3 If necessary, turn the on/off switch to the on position. Checking the Installation Power On Self-Test (POST) After turning on power to the Switch 3800, the device performs a Power On Self-Test (POST).
SW3800.BK Page 7 Tuesday, May 5, 1998 5:20 PM Logging on for the First Time 2-7 5 Assign an IP address and subnetwork mask for VLAN default. The example below assigns an IP address of 123.45.67.8 and a subnetwork mask of 255.255.255.0. config vlan default ipaddress 123.45.67.8 255.255.255.0 Your changes take effect immediately.
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SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM 3 ACCESSING THE SWITCH This chapter describes the following information that you can use to begin managing the Switch 3800: ■ Security access level overview ■ Configuring the Switch for management ■ Switch management methods ■ Configuring SNMP CAUTION: For configuration changes to be retained through a Switch power cycle or reboot, you must issue a SAVE command after you have made the change.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM 3-2 CHAPTER 3: ACCESSING THE SWITCH Administrator Access Level An administrator-level account can view and change all Switch parameters, add and delete users, and change the password associated with any account name. The administrator can disconnect a Telnet management session. If this happens, the user is notified that the session has been terminated. If you have logged on with administrator access level, the command-line prompt ends with a (#) sign.
SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM Security Access Levels 3-3 4 Enter the new password at the prompt. 5 Re-enter the new password at the prompt. 6 Save your changes by typing save Creating a Management Account The Switch can have a total of three management accounts. You can use the default names (admin and user), or you can create new names and passwords for the accounts. Passwords must have a minimum of four characters and can have a maximum of 12 characters.
SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM 3-4 CHAPTER 3: ACCESSING THE SWITCH 3 Enter the new password at the prompt. 4 Re-enter the new password at the prompt. 5 Save your changes by typing save If you forget your password contact your local technical support representative, who will advise on your next course of action. Viewing Switch Accounts To view the accounts that have been created, you must have administrator privileges.
SW3800.BK Page 5 Tuesday, May 5, 1998 5:20 PM Using Telnet Using the Console Interface 3-5 The command-line interface built into the Switch is accessible by way of the 9-pin, RS-232 console port located on the rear of the unit. For more information on the console port pin-outs, refer to Chapter 2. Once the connection is established, you will see the system prompt and you may log on. Using Telnet Any Telnet facility should be able to communicate with the Switch over a TCP/IP network.
SW3800.BK Page 6 Tuesday, May 5, 1998 5:20 PM 3-6 CHAPTER 3: ACCESSING THE SWITCH You can enable BOOTP on a per-VLAN basis by using the following command: enable bootp vlan [ | all] Manually Configuring the IP Settings If you are using IP without a BOOTP server, you must enter the IP parameters for the Switch in order for the SNMP Network Manager or Telnet software to communicate with the device.
SW3800.BK Page 7 Tuesday, May 5, 1998 5:20 PM Using Telnet 3-7 4 At the password prompt, enter the password and press [Return]. When you have successfully logged on to the Switch, the command-line prompt displays the name of the Switch in its prompt. 5 Assign an IP address and subnetwork mask for the default VLAN by using the following command config vlan ipaddress {} For example: config vlan default ipaddress 123.45.67.8 255.255.255.
SW3800.BK Page 8 Tuesday, May 5, 1998 5:20 PM 3-8 CHAPTER 3: ACCESSING THE SWITCH Sample output from the show session command is as follows: 3C16910:2 # sh sess # Login Time User Type Location ============================================================ 0 Tue Mar 10 11:10:53 1998 admin console serial 4 Tue Mar 10 13:11:13 1998 user telnet 192.207.37.168 Terminate the session by typing clear session Disabling Telnet Access By default, Telnet services are enabled on the Switch.
SW3800.BK Page 9 Tuesday, May 5, 1998 5:20 PM Using SNMP Accessing Switch Agents Saving Configuration Changes Supported MIBs In order to have access to the SNMP agent residing in the Switch, at least one VLAN on the Switch must have an IP address assigned to it. For more information on assigning an IP address, refer to “Manually Configuring the IP Settings,” on page 3-6.
SW3800.BK Page 10 Tuesday, May 5, 1998 5:20 PM 3-10 CHAPTER 3: ACCESSING THE SWITCH Table 3-3 Configuring SNMP Settings Supported Traps (continued) Trap Description Falling alarm Indicates that an RMON alarm entry has crossed its falling threshold. Fan fail Indicates that one or more of the cooling fans inside the device has failed. A Fan okay trap will be issued once the fan has attained normal operation.
SW3800.BK Page 11 Tuesday, May 5, 1998 5:20 PM Using SNMP 3-11 Table 3-4 describes SNMP configuration commands. Table 3-4 SNMP Configuration Commands Command Description config vlan ipaddress {} Configures an IP address for the VLAN. This is required in order to use an SNMP manager. enable snmp access Allows you to turn on SNMP support for the Switch. enable snmp trap Allows you to turn on SNMP trap support.
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SW3800.BK Page 13 Tuesday, May 5, 1998 5:20 PM Configuring Ports 3-13 Options for the ping command are described in Table 3-6. Table 3-6 Traceroute Ping Command Parameters Parameter Description continuous Allows you to specify ICMP echo messages to be sent continuously. size Allows you to specify the size of the packet. The traceroute command allows you to trace the routed path between the Switch and a destination endstation.
SW3800.BK Page 14 Tuesday, May 5, 1998 5:20 PM 3-14 CHAPTER 3: ACCESSING THE SWITCH Configuring Autonegotiation By default, the Switch 3800 is configured to use autonegotiation for all ports. Autonegotiation on 10/100 Mbps ports is used to automatically determine speed and duplex settings. You can select to manually configure the duplex and speed settings of 10/100 Mbps ports.
SW3800.BK Page 15 Tuesday, May 5, 1998 5:20 PM Load Sharing Load Sharing 3-15 Load sharing with the Switch 3800 allows you to increase bandwidth and resilience by using a group of ports to carry traffic in parallel between Switches. The sharing algorithm allows the Switch to use multiple ports as a single logical port. For example, VLANs see the load-sharing group as a single virtual port. The algorithm also guarantees packet sequencing between clients.
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SW3800.BK Page 17 Tuesday, May 5, 1998 5:20 PM SmartRedundancy 3-17 SmartRedundancy SmartRedundancy for the Switch 3800 refers to fail-over behavior of the main and standby Gigabit Ethernet ports. SmartRedundancy allows the Switch to always use the main link if it is available. For example, if only the standby link is available it will be used, but if the main link becomes available again the link will switch back to the main from the standby.
SW3800.BK Page 18 Tuesday, May 5, 1998 5:20 PM 3-18 CHAPTER 3: ACCESSING THE SWITCH Table 3-8 Port Commands (continued) Command Description disable smartredundancy Allows you to disable the SmartRedundancy feature. If the feature is disabled, the Switch changes the active link only when the current active link becomes inoperable. show port config Displays state, link status, speed, and autonegotiation setting for each port.
SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM 4 COMMANDS This chapter contains a description of each command-line interface command for the Switch 3800. It also provides the following information related to Switch 3800 commands: ■ Command syntax ■ Line-editing commands ■ Command history substitution If an asterisk (*) appears in front of the command-line prompt, it indicates that you have outstanding configuration changes that have not been saved.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM 4-2 CHAPTER 4: COMMANDS If the command does not include a parameter, skip to Step 3. If the command requires more information, or if you want to include optional parameters, continue to Step 2a. a If the command has additional parameters include them after the command name. b If the command includes a parameter, enter the parameter name, and its values. The parameters values may include numerics, strings, or addresses, depending on the parameter.
SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM Understanding the Command Syntax 4-3 config vlan engineering add port 1-3,6 could use the following shortcut: config engineering add port 1-3, 6 Numerical Ranges Commands that require you to enter one or more port numbers use the parameter, , in the syntax.
SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM 4-4 CHAPTER 4: COMMANDS Table 4-1 Command Syntax Symbols (continued) Symbol Description vertical bar | Separates mutually exclusive items in a list, one of which must be entered. For example, in the syntax config snmp community [read | write] you must specify either the read or write community string in the command. Do not type the vertical bar. braces { } Enclose an optional value or a list of optional arguments.
SW3800.BK Page 5 Tuesday, May 5, 1998 5:20 PM Command History Substitution Command History Substitution 4-5 The Switch 3800 “remembers” the last 50 commands you enter. You can display a list of these commands by typing history Common Commands Table 4-3 Table 4-3 describes common commands used to manage the Switch. Commands specific to a particular feature are described in the other chapters of this guide.
SW3800.BK Page 6 Tuesday, May 5, 1998 5:20 PM 4-6 CHAPTER 4: COMMANDS Table 4-3 Common Commands (continued) Command Description unconfig switch {all} Allows you to reset all Switch parameters (with the exception of defined VLANs and IP addresses) to the factory defaults. If you specify the keyword “all”, the IP addresses are reset as well. Switch 3800 Commands The tables in this section list all of the commands used on the Switch 3800.
SW3800.BK Page 7 Tuesday, May 5, 1998 5:20 PM Switch 3800 Commands General Switch Commands Table 4-4 4-7 Table 4-4 describes general Switch commands.
SW3800.BK Page 8 Tuesday, May 5, 1998 5:20 PM 4-8 CHAPTER 4: COMMANDS Table 4-4 General Switch Commands (continued) Command Description config devicemode [bridging | iprouting] Allows you to configure the operating mode of the Switch. Specify: ■ ■ bridging — Layer 2 bridging functions only iprouting — Bridging and IP unicast routing functions If this command is used while the Switch 3800 is up and running, the Switch saves the configuration and reboots. The default operating mode is “iprouting.
SW3800.BK Page 9 Tuesday, May 5, 1998 5:20 PM Switch 3800 Commands Switch Management Commands Table 4-6 4-9 Table 4-6 describes Switch management commands Switch Management Commands Command Description show management Displays network management configuration and statistics including enable/disable states for Telnet and SNMP, SNMP community strings, authorized SNMP station list, SNMP trap receiver list, and login statistics.
SW3800.BK Page 10 Tuesday, May 5, 1998 5:20 PM 4-10 CHAPTER 4: COMMANDS Table 4-6 Switch Management Commands (continued) Command Description config snmp syscontact Allows you to configure the name of the system contact. A maximum of 32 characters is allowed. config snmp sysname Allows you to configure the name of the Switch. The sysname appears in the command line interface prompt. A maximum of 32 characters is allowed. The default sysname is 3C16910.
SW3800.BK Page 11 Tuesday, May 5, 1998 5:20 PM Switch 3800 Commands Protocol Commands Table 4-8 4-11 Table 4-8 describes protocol commands. Protocol Commands Command Description show protocol { | all} Allows you to display protocol-related information, including: ■ Protocol name ■ List of protocol fields ■ List of VLANs that use this protocol create protocol Allows you to create a user-defined protocol.
SW3800.BK Page 12 Tuesday, May 5, 1998 5:20 PM 4-12 CHAPTER 4: COMMANDS Table 4-9 FDB Commands (continued) Command Description create fdbentry vlan Allows you to create a permanent FDB entry. Specify the following: ■ ■ ■ mac_address — Device MAC address, using colon separated bytes. name — VLAN associated with MAC address. portlist — Port number associated with MAC address.
SW3800.BK Page 13 Tuesday, May 5, 1998 5:20 PM Switch 3800 Commands Table 4-10 4-13 Port Commands Command Description config port auto off {speed [10 | 100]} duplex [half | full] Allows you to change the configuration of a group of 10/100 Mbps ports. Specify the following: ■ ■ ■ auto off — The port will not autonegotiate the settings. speed — The speed of the port (for 10/100 Mbps ports only). duplex — The duplex setting (half- or full-duplex).
SW3800.BK Page 14 Tuesday, May 5, 1998 5:20 PM 4-14 CHAPTER 4: COMMANDS STP Commands Table 4-12 Table 4-12 describes STP commands. STP Commands Command Description show stpd { | all} Displays STP information for one or all STPDs on the Switch. show stpd port Displays port-specific STP information, including the forwarding state of each port. create stpd Allows you to create an STPD.
SW3800.BK Page 15 Tuesday, May 5, 1998 5:20 PM Switch 3800 Commands Table 4-12 4-15 STP Commands (continued) Command Description config stpd port cost Allows you to specify the path cost of the port in this STPD. The range is 1–65,535. The Switch automatically assigns a default path cost of 1. config stpd port priority Allows you to specify the priority of the port in this STPD.
SW3800.BK Page 16 Tuesday, May 5, 1998 5:20 PM 4-16 CHAPTER 4: COMMANDS Basic IP Commands Table 4-13 Table 4-13 describes basic IP commands.
SW3800.BK Page 17 Tuesday, May 5, 1998 5:20 PM Switch 3800 Commands Table 4-13 4-17 Basic IP Commands (continued) Command Description disable bootp vlan [ | all] Allows you to disable the generation and processing of BOOTP packets. enable bootprelay Allows you to enable the BOOTP relay function on the router. disable bootprelay Allows you to disable the BOOTP relay function on the router.
SW3800.BK Page 18 Tuesday, May 5, 1998 5:20 PM 4-18 CHAPTER 4: COMMANDS IP Route Table Commands Table 4-15 Table 4-15 describes IP route table commands. IP Route Table Commands Command Description show iproute {vlan { | all | permanent | } Allows you to display the contents of the IP routing table. config iproute add default {} Allows you to add a default gateway to the routing table. A default gateway must be located on a configured IP interface.
SW3800.BK Page 19 Tuesday, May 5, 1998 5:20 PM Switch 3800 Commands Table 4-16 4-19 ICMP Commands (continued) Command Description enable icmp useredirects Allows you to enable the modification of route table information when an ICMP redirect message is received. The default setting is disabled. disable icmp useredirects Allows you to disable the changing of routing table information when an ICMP redirect message is received.
SW3800.BK Page 20 Tuesday, May 5, 1998 5:20 PM 4-20 CHAPTER 4: COMMANDS RIP Commands Table 4-17 Table 4-17 describes the commands used to configure the RIP protocol. RIP Commands Command Description show rip {vlan | all} Displays RIP configuration and statistics for one or more VLANs. Display includes the state for RIP settings, and interface states.
SW3800.BK Page 21 Tuesday, May 5, 1998 5:20 PM Switch 3800 Commands Table 4-17 4-21 RIP Commands (continued) Command Description enable rip exportstatic Allows you to enable the advertisement of static routes using RIP. The default setting is enabled. disable rip exportstatic Allows you to disable the filtering of static routes. config rip updatetime {} Allows you to change the periodic RIP update timer. The default setting is 30 seconds.
SW3800.BK Page 22 Tuesday, May 5, 1998 5:20 PM 4-22 CHAPTER 4: COMMANDS Logging Commands Table 4-18 Table 4-18 describes Switch logging commands. Logging Commands Command Description show log config Displays the log configuration, including the syslog host IP address, the priority level of messages being logged locally, and the priority level of messages being sent to the syslog host. show log {} {} Displays the current snapshot of the log.
SW3800.BK Page 23 Tuesday, May 5, 1998 5:20 PM Switch 3800 Commands Table 4-18 4-23 Logging Commands (continued) Command Description config syslog {} {} Allows you to configure the syslog host address and filter messages sent to the syslog host. Options include: ■ ipaddress — The IP address of the syslog host. ■ facility — The syslog facility level for local use.
SW3800.BK Page 24 Tuesday, May 5, 1998 5:20 PM 4-24 CHAPTER 4: COMMANDS Table 4-19 Configuration and Image Commands (continued) Command Description download image {primary | secondary} Allows you to download a new image from a TFTP server. You must specify the IP address of the TFTP server and the image filename. You can optionally specify if you want the file downloaded to the primary or secondary image. If you do not specify, the file is downloaded to the primary image.
SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM VIRTUAL LANS (VLANS) 5 Setting up Virtual Local Area Networks (VLANs) on the Switch 3800 eases many time-consuming tasks of network administration while increasing efficiency in network operations. This chapter describes the VLAN concepts and explains how to implement VLANs on the Switch 3800.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM 5-2 CHAPTER 5: VIRTUAL LANS (VLANS) ■ It helps to control traffic. With traditional networks, congestion can be caused by broadcast traffic that is directed to all network devices, regardless of whether they require it. VLANs increase the efficiency of your network because each VLAN can be set up to contain only those devices that need to communicate with each other. ■ It provides extra security.
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SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM 5-4 CHAPTER 5: VIRTUAL LANS (VLANS) Expanding Port-Based VLANs Across Switches To create a port-based VLAN that spans two Switches you must do two things: ■ Assign the port on each Switch to the VLAN. ■ Cable the two Switches together using one port on each Switch per VLAN. Figure 5-2 illustrates a single VLAN that spans two Switches. All ports on both Switches belong to VLAN Sales.
SW3800.BK Page 5 Tuesday, May 5, 1998 5:20 PM Overview of Virtual LANs 5-5 Figure 5-3 illustrates two VLANs spanning two Switches. On Switch 1, ports 1–16 are part of VLAN Accounting; ports 17–24 are part of VLAN Engineering. On Switch 2, ports 1–16 are part of VLAN Accounting; ports 17–24 are part of VLAN Engineering. VLAN Accounting spans Switch 1 and Switch 2 by way of a connection between Switch 1 port 11 and Switch 2 port 6.
SW3800.BK Page 6 Tuesday, May 5, 1998 5:20 PM 5-6 CHAPTER 5: VIRTUAL LANS (VLANS) Tagged VLANs The Switch 3800 uses the IEEE 802.1Q D4 draft standard for rules associated with VLAN tagging. Tagging is a process that inserts a marker (called a tag) into the Ethernet frame. The tag contains the identification number of a specific VLAN, called the VLANid. Uses of Tagged VLANs Tagging is most commonly used to create VLANs that span Switches. The Switch-to-Switch connections are called trunks.
SW3800.BK Page 7 Tuesday, May 5, 1998 5:20 PM Overview of Virtual LANs 5-7 Figure 5-4 illustrates the physical view of a network that uses tagged and untagged traffic. S S M M S M Switch 1 M = Marketing S = Sales 802.1Q Tagged server = Tagged port M S M S M S Switch 2 Figure 5-4 Physical diagram of tagged and untagged traffic Figure 5-5 shows a logical diagram of the same network.
SW3800.BK Page 8 Tuesday, May 5, 1998 5:20 PM 5-8 CHAPTER 5: VIRTUAL LANS (VLANS) In Figure 5-4 and Figure 5-5: ■ The trunk port on each Switch carries traffic for both VLAN Marketing and VLAN Sales. ■ The trunk port on each Switch is tagged. ■ The server connected to port 1 on Switch 1 has a NIC that supports 802.1Q tagging. ■ The server connected to port 1 on Switch 1 is a member of both VLAN Marketing and VLAN Sales. ■ All other stations use untagged traffic.
SW3800.BK Page 9 Tuesday, May 5, 1998 5:20 PM Overview of Virtual LANs 5-9 The IP traffic has been divided into two IP subnets, 192.207.35.0 and 192.207.36.0. The subnets are internally routed by the Switch 3800. The subnets are assigned different VLAN names, Finance and Personnel, respectively. The remainder of the traffic belongs to the VLAN named MyCompany. All ports are members of the VLAN MyCompany. 192.207.35.1 192.207.36.1 My Company 192.207.35.0 Finance 1 192.207.36.
SW3800.BK Page 10 Tuesday, May 5, 1998 5:20 PM 5-10 CHAPTER 5: VIRTUAL LANS (VLANS) Defining Protocol Filters If necessary, you can define a customized protocol filter based on EtherType, LLC, and/or SNAP. Up to six filters may be part of a protocol filter.
SW3800.BK Page 11 Tuesday, May 5, 1998 5:20 PM Configuring VLANs on the Switch 3800 5-11 The Default VLAN The Switch 3800 ships with one default VLAN that has the following properties: Configuring VLANs on the Switch 3800 ■ The VLAN name is default. ■ It contains all the ports on a new or initialized Switch. ■ The default VLAN is untagged, and has no VLANid or protocol filter assigned. This section describes the commands associated with setting up VLANs on the Switch 3800.
SW3800.BK Page 12 Tuesday, May 5, 1998 5:20 PM 5-12 CHAPTER 5: VIRTUAL LANS (VLANS) Table 5-1 describes the commands used to configure a VLAN. Table 5-1 VLAN Configuration Commands Command Description create vlan Allows you to create a named VLAN. create protocol Allows you to create a user-defined protocol. config protocol add Allows you to configure a protocol filter.
SW3800.BK Page 13 Tuesday, May 5, 1998 5:20 PM Displaying VLAN Settings 5-13 The following example creates a tag-based VLAN named video. It assigns the VLANid 1000. Ports 4–8 are added as tagged ports to the VLAN. create vlan video config video tag 1000 config video add port 4-8 tagged The following example creates a VLAN named Sales , with the VLANid 120. The VLAN uses both tagged and untagged ports. Ports 1–3 are tagged, and ports 4 and 7 are untagged.
SW3800.BK Page 14 Tuesday, May 5, 1998 5:20 PM 5-14 CHAPTER 5: VIRTUAL LANS (VLANS) ■ Status for each port ■ Enabled/disabled ■ Tagged/untagged ■ Protocol information ■ IP address ■ STPD information Sample output from this command is as follows: 3C16910:7 # sh vlan all VLAN "Default" created by user Tagging: 802.1Q Tag 1 IP: 192.207.37.214/255.255.255.0 STPD: Domain "s0" is not running spanning tree protocol. Protocol: Match all unfiltered protocols. Ports: 23.
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SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM 6 SWITCH FORWARDING DATABASE (FDB) This chapter describes the contents of the Switch forwarding database (FDB), how the FDB works, and how to configure the FDB. Overview of the FDB FDB Contents FDB Entry Types The Switch 3800 maintains a database of all addresses received on all of its ports. It uses the information in this database to decide whether a frame should be forwarded or filtered. The database holds up to a maximum of 12,000 entries.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM 6-2 CHAPTER 6: SWITCH FORWARDING DATABASE (FDB) ■ PACE Prioritization Permanent entries — Permanent entries are retained in the database if the Switch is reset or a power off/on cycle occurs. The system administrator must make entries permanent. A permanent entry can either be a unicast or multicast MAC address. All entries entered by way of the command-line interface are stored as permanent. The Switch can support a maximum of 64 permanent entries.
SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM Configuring FDB Entries Configuring FDB Entries Table 6-1 6-3 To configure entries in the FDB, use the commands listed in Table 6-1. FDB Configuration Commands Command Description create fdbentry vlan Allows you to create a permanent FDB entry.
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SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM 7 SPANNING TREE PROTOCOL (STP) Using the Spanning Tree Protocol (STP) functionality of the Switch 3800 makes your network more fault tolerant. The following sections describe STP concepts, and how STP features are supported by the Switch. STP is a part of the 802.1d bridge specification defined by the IEEE Computer Society. To explain STP more effectively, the Switch 3800 will be defined as a bridge.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM 7-2 CHAPTER 7: SPANNING TREE PROTOCOL (STP) Figure 7-1 Network with an illegal topology This configuration is illegal because it creates loops that cause the network to overload. However, STP allows you to use this configuration because STP detects duplicate paths and immediately prevents (or blocks) one of them from forwarding traffic. Figure 7-2 shows an example of enabling STP on the bridges in the configuration.
SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM Overview of the Spanning Tree Protocol 7-3 If the link through Bridge C fails, as shown in Figure 7-3, the STP system reconfigures the network so that traffic from segment 2 flows through Bridge B.
SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM 7-4 CHAPTER 7: SPANNING TREE PROTOCOL (STP) The Root Bridge generates BPDUs on all ports at a regular interval known as the Hello Time. All other bridges in the network have a Root Port. This is the port that costs the least in getting to the Root Bridge, and it is used for receiving the BPDUs initiated by the Root Bridge.
SW3800.BK Page 5 Tuesday, May 5, 1998 5:20 PM Spanning Tree Domains ■ 7-5 Within any given STPD, all VLANs belonging to it use the same spanning tree. Care must be taken to ensure that STPD instances within a single Switch do not see each other in the same broadcast domain. This could happen if, for example, another external bridge is used to connect VLANs belonging to separate STPDs. Defaults The default device configuration contains a single STPD called s0. The default VLAN is a member of STPD s0.
SW3800.BK Page 6 Tuesday, May 5, 1998 5:20 PM 7-6 CHAPTER 7: SPANNING TREE PROTOCOL (STP) STP Configurations When you assign VLANs to an STPD, pay careful attention to the STP configuration and its effect on the forwarding of VLAN traffic. Figure 7-4 illustrates a network that uses VLAN tagging for trunk connections. The following four VLANs have been defined: ■ Sales is defined on Switch A, Switch B, and Switch M. ■ Personnel is defined on Switch A, Switch B, and Switch M.
SW3800.BK Page 7 Tuesday, May 5, 1998 5:20 PM STP Configurations 7-7 When the Switches in this configuration start up, STP configures each STP domain such that there are no active loops in the topology. STP could configure the topology in a number of ways to make it loop-free. In Figure 7-4, the connection between Switch A and Switch B is put into blocking state, and the connection between Switch Y and Switch Z is put into blocking state.
SW3800.BK Page 8 Tuesday, May 5, 1998 5:20 PM 7-8 CHAPTER 7: SPANNING TREE PROTOCOL (STP) STP Configurations to Avoid Within a single STPD, you must be careful when configuring your VLANs. The following figures illustrate networks that have been incorrectly set up so that the STP configuration disables the ability of the Switches to forward VLAN traffic. The tag-based network in Figure 7-5 has the following configuration: ■ Switch 1 contains VLAN Marketing and VLAN Sales.
SW3800.BK Page 9 Tuesday, May 5, 1998 5:20 PM Creating STP Domains 7-9 Figure 7-6 shows a similar configuration in which the VLANs are all port-based. The trunk connections between the Switches require one trunk port per Switch for each VLAN.
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SW3800.BK Page 11 Tuesday, May 5, 1998 5:20 PM Configuring STP Table 7-1 7-11 STP Configuration Commands (continued) Command Description config stpd delete vlan [ | all] Allows you to remove one or all VLANs from an STPD. If all is specified, the association between the STPD and VLAN is removed, but both still exist.
SW3800.BK Page 12 Tuesday, May 5, 1998 5:20 PM 7-12 CHAPTER 7: SPANNING TREE PROTOCOL (STP) Configuration Example The following example creates and enables an STPD named Backbone_st. It assigns the Manufacturing VLAN to the STPD. It disables STP on ports 1 through 3, and port 4.
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SW3800.BK Page 14 Tuesday, May 5, 1998 5:20 PM 7-14 CHAPTER 7: SPANNING TREE PROTOCOL (STP) Disabling and Resetting STP Table 7-2 To disable STP or return STP settings to their defaults, use the commands listed in Table 7-2. STP Disable and Reset Commands Command Description delete stpd Allows you to remove an STPD. An STPD can only be removed if all VLANs have been deleted from it. disable stpd [ | all] Allows you to disable the STP mechanism on one or all STPDs.
SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM 8 IP UNICAST ROUTING This chapter describes how to configure IP routing on the Switch 3800. It assumes that you are already familiar with IP unicast routing.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM 8-2 CHAPTER 8: IP UNICAST ROUTING In Figure 8-1, a Switch 3800 is shown with two VLANs defined: Finance and Personnel. Ports 1 and 3 are assigned to Finance; ports 2 and 4 are assigned to Personnel. Finance belongs to the IP network 192.207.35.0; the router interface for Finance is assigned the IP address 192.206.35.1. Personnel belongs to the IP network 192.207.36.0; its router interface is assigned IP address 192.207.36.1.
SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM Overview of IP Unicast Routing 8-3 Dynamic Routes Dynamic routes are typically learned by way of RIP. Routers using RIP exchange information in their routing tables in the form of RIP advertisements. Using dynamic routes, the routing table contains only networks that are reachable. Dynamic routes are aged out of the table when a RIP update for the network is not received for a period of time.
SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM 8-4 CHAPTER 8: IP UNICAST ROUTING Configuring IP Unicast Routing This section describes the commands associated with configuring IP unicast routing on the Switch 3800. Configuring routing involves the following steps: ■ Verify the Switch operating mode is set to “iprouting” by using the following command: show switch If it is not, use the following command: config devicemode iprouting ■ Create and configure two or more VLANs.
SW3800.BK Page 5 Tuesday, May 5, 1998 5:20 PM Verifying the IP Unicast Routing Configuration Verifying the IP Unicast Routing Configuration 8-5 Use the “show iproute” command to display the current configuration of IP unicast routing for the Switch, and for each VLAN. The “show iproute” command displays the currently configured routes, including how each route was learned. Additional verification commands include: ■ show iparp Displays the IP ARP table of the switch.
SW3800.BK Page 6 Tuesday, May 5, 1998 5:20 PM 8-6 CHAPTER 8: IP UNICAST ROUTING Table 8-1 describes the commands used to configure basic IP settings on the Switch. Table 8-1 Basic IP Commands Command Description enable bootp {vlan | all} Enables the generation and processing of BOOTP packets on a VLAN to obtain an IP address for the VLAN from a BOOTP server. The default setting is enabled for all VLANs.
SW3800.BK Page 7 Tuesday, May 5, 1998 5:20 PM Configuring DHCP/BOOTP Relay Table 8-1 8-7 Basic IP Commands (continued) Command Description clear ipfdb [ | vlan | all] Removes the dynamic entries in the IP forwarding database. Table 8-2 describes the commands used to configure the IP route table. Table 8-2 Route Table Configuration Commands Command Description config iproute add {} Adds a static address to the routing table.
SW3800.BK Page 8 Tuesday, May 5, 1998 5:20 PM 8-8 CHAPTER 8: IP UNICAST ROUTING Table 8-3 RIP Configuration Commands (continued) Command Description enable rip splithorizon Enables the split horizon algorithm for RIP. Default setting is enabled. enable rip triggerupdate Enables triggered updates. Triggered updates are a mechanism for immediately notifying a router’s neighbors when the router adds or deletes routes, or changes the metric of a route. The default setting is enabled.
SW3800.BK Page 9 Tuesday, May 5, 1998 5:20 PM Configuring DHCP/BOOTP Relay Table 8-3 8-9 RIP Configuration Commands (continued) Command Description disable rip splithorizon Disables split horizon. disable rip poisonreverse Disables poison reverse. disable rip triggerupdate Disables triggered updates disable rip exportstatic Disables the filtering of static routes. unconfig rip {vlan | all} Resets all RIP parameters to the default VLAN.
SW3800.BK Page 10 Tuesday, May 5, 1998 5:20 PM 8-10 CHAPTER 8: IP UNICAST ROUTING Table 8-4 ICMP Configuration Commands (continued) Command Description unconfig irdp Resets all router advertisement settings to the default values. disable icmp redirects {vlan | all} Disables the generation of ICMP redirects on one or more VLANs. disable icmp unreachables Disables the generation of ICMP unreachable messages on one or more VLANs.
SW3800.BK Page 11 Tuesday, May 5, 1998 5:20 PM Routing Configuration Example 192.207.35.1 8-11 192.207.36.1 My Company 192.207.35.0 Finance 192.207.36.0 Personnel 1 2 3 IP NetBIOS IP NetBIOS IP NetBIOS 4 IP NetBIOS = IP traffic = NetBIOS traffic Figure 8-2 Unicast Routing Configuration Example In this configuration, all IP traffic from stations connected to ports 1 and 3 have access to the router by way of the VLAN Finance. Ports 2 and 4 reach the router by way of the VLAN Personnel.
SW3800.BK Page 12 Tuesday, May 5, 1998 5:20 PM 8-12 CHAPTER 8: IP UNICAST ROUTING Displaying Router Settings Table 8-5 To display settings for various IP routing components, use the commands listed in Table 8-5.
SW3800.BK Page 13 Tuesday, May 5, 1998 5:20 PM Resetting and Disabling Router Settings Table 8-5 Router Show Commands (continued) Command Description show rip stat {vlan | all} Displays RIP-specific statistics.
SW3800.BK Page 14 Tuesday, May 5, 1998 5:20 PM 8-14 CHAPTER 8: IP UNICAST ROUTING Table 8-6 Router Reset and Disable Commands (continued) Command Description disable rip {vlan | all} Disables RIP for one or more VLANs. When RIP is disabled, the parameters are not reset to their defaults, and the states are not cleared. Disables RIP for a VLAN causes all routes learned from that VLAN to be advertised with a GarbageTime metric of 16, before being deleted from the route table.
SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM STATUS MONITORING AND STATISTICS 9 This chapter describes how to view the current operating status of the Switch, how to display information in the Switch log, and how to take advantage of the RMON capabilities available in the Switch.
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SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM Status Monitoring Table 9-1 9-3 Switch Monitoring Commands (continued) Command Description show port collisions Displays collision statistics for each port. show port config Displays state, link status, speed, and autonegotiation setting for each port. show port errors Displays error information for one or more ports. show port packet Displays a histogram of packet statistics for one or more ports.
SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM 9-4 CHAPTER 9: STATUS MONITORING AND STATISTICS Table 9-1 Switch Monitoring Commands (continued) Command Description show stpd port Displays port-specific STP information, including STP port configuration and state.
SW3800.BK Page 5 Tuesday, May 5, 1998 5:20 PM Port Statistics 9-5 The following port statistic information is collected by the Switch: Link Status — The current status of the link. Options are: ■ Ready — The port is ready to accept a link. ■ Active — The link is present at this port. Transmit Packet Count (Tx Pkt Count) — The number of packets that have been successfully transmitted by the port. Transmit Byte Count (Tx Byte Count) — The total number of data bytes successfully transmitted by the port.
SW3800.BK Page 6 Tuesday, May 5, 1998 5:20 PM 9-6 CHAPTER 9: STATUS MONITORING AND STATISTICS Port Errors The Switch 3800 keeps track of errors for each port. To view port error, type show port errors The following port error information is collected by the Switch: Link Status — The current status of the link. Options are: ■ Ready — The port is ready to accept a link. ■ Active — The link is present at this port.
SW3800.BK Page 7 Tuesday, May 5, 1998 5:20 PM Switch Logging 9-7 Receive Jabber Frames (RX Jab) — The total number of frames received by the port that were of longer than the support maximum length and had a Cyclic Redundancy Check (CRC) error. Receive Alignment Errors (RX Align) — The total number of frames received by the port that occurs if a frame has a CRC error and does not contain an integral number of octets.
SW3800.BK Page 8 Tuesday, May 5, 1998 5:20 PM 9-8 CHAPTER 9: STATUS MONITORING AND STATISTICS Table 9-3 Subsystem Description STP STP information. Examples include an STP state change. Brdg Bridge-related functionality. Examples include low table space and queue overflow. SNMP SNMP information. Examples include community string violations. Telnet Information related to Telnet logon and configuration performed by way of a Telnet session. VLAN VLAN-related configuration information.
SW3800.BK Page 9 Tuesday, May 5, 1998 5:20 PM Switch Logging 9-9 If priority is not specified, only messages of critical priority are displayed. If the subsystem is not specified, all subsystems are displayed. If you enable the log display on a terminal connected to the console port, your settings will remain in effect even after your console session is ended (unless you explicitly disable the log display).
SW3800.BK Page 10 Tuesday, May 5, 1998 5:20 PM 9-10 CHAPTER 9: STATUS MONITORING AND STATISTICS Logging Commands Table 9-4 The commands described in Table 9-4 allow you to do the following: ■ Configure logging options ■ Reset logging options ■ Display the log ■ Clear the log Logging Commands Command Description config log display {} {} Allows you to configure the real-time log display.
SW3800.BK Page 11 Tuesday, May 5, 1998 5:20 PM RMON Table 9-4 9-11 Logging Commands (continued) Command Description show log {} {} Allows you to display the a snapshot of the log. Options include: ■ ■ priority — Filters the log to display messages with the selected priority or higher (more critical). Priorities include critical, warning, and informational. If not specified, informational priority messages and higher are displayed.
SW3800.BK Page 12 Tuesday, May 5, 1998 5:20 PM 9-12 CHAPTER 9: STATUS MONITORING AND STATISTICS A typical RMON setup consists of the following two components: About the RMON Groups ■ The RMON probe — An intelligent, remotely controlled device or software agent that continually collects statistics about a LAN segment or VLAN. The probe transfers the information to a management workstation on request or when a predefined threshold is crossed.
SW3800.BK Page 13 Tuesday, May 5, 1998 5:20 PM RMON 9-13 Alarms The Alarms group provides a versatile, general mechanism for setting threshold and sampling intervals to generate events on any MIB variable. Alarms inform you of a network performance problem and they can trigger automated action responses through the Events group. Events Effective use of the Events group saves you time.
SW3800.BK Page 14 Tuesday, May 5, 1998 5:20 PM 9-14 CHAPTER 9: STATUS MONITORING AND STATISTICS An RMON probe, however, autonomously looks at the network on behalf of the management workstation without affecting the characteristics and performance of the network. The probe reports by exception, which means that it only informs the management workstation when the network has entered an abnormal state.
SW3800.BK Page 15 Tuesday, May 5, 1998 5:20 PM RMON 9-15 When using the RMON features of the Switch, you should note the following: About Event Actions ■ After the default sessions are created, they have no special status. You can delete or change them as required. ■ The greater the number of RMON sessions, the greater the burden on the management resources of the Switch. However, the forwarding performance of the Switch is not affected. You can define up to 50 alarms for the Switch.
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SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM 10 SOFTWARE UPGRADE AND BOOT OPTIONS This chapter describes the procedure for upgrading the Switch software image. It also covers how to save and load a primary and secondary configuration file on the Switch. Upgrading the Software The image file contains the executable code that runs on the Switch 3800. It comes preinstalled on the Switch from the factory. As new versions of the image are released, you should upgrade the software running on your Switch.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM 10-2 CHAPTER 10: SOFTWARE UPGRADE AND BOOT OPTIONS You can select which image the Switch will load on the next reboot by using the following command: use image {primary | secondary} If you do not specify which image to use, the Switch automatically loads the primary image.
SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM Boot Option Commands Returning to Factory Defaults 10-3 To return the Switch configuration to factory defaults, use the following command: unconfig switch This command resets the entire configuration, with the exception of user accounts and passwords that have been configured. To reset all parameters, use the following command: unconfig switch all Boot Option Commands Table 10-1 Table 10-1 lists the commands associated with Switch 3800 boot options.
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SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM SAFETY INFORMATION A You must read the following safety information before carrying out any installation or removal of components, or any maintenance procedures on the Switch 3800. Important Safety Information WARNING: Warnings contain directions that you must follow for your personal safety. Follow all instructions carefully. Please read the following safety information thoroughly before installing the Switch 3800.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM A-2 APPENDIX A: SAFETY INFORMATION ■ This unit operates under SELV (Safety Extra Low Voltage) conditions according to IEC 950. The conditions are only maintained if the equipment to which it is connected also operates under SELV conditions. ■ The appliance coupler (the connector to the unit and not the wall plug) must have a configuration for mating with an EN60320/IEC320 appliance inlet.
SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM Important Safety Information ■ If the power cord plug is unsuitable and must be replaced, you may find other codings for the respective connections. Connect the power supply wires for the unit according to the following scheme: ■ ■ ■ Fuse ■ A-3 Brown wire to the Live (Line) plug terminal which may be marked with the letter ‘L’ or colored red. Blue wire to the Neutral plug terminal which may be marked with the letter ‘N’ or colored black.
SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM A-4 APPENDIX A: SAFETY INFORMATION Lithium Battery ■ Replace the lithium battery with the same or equivalent type, as recommended by the manufacturer. WARNING: There is a danger of explosion if the battery is incorrectly replaced. ■ Dispose of used batteries according to the manufacturers instructions. ■ Do not disposed of the batteries in water, or by fire. ■ Disposal requirements vary by country and by state.
SW3800.BK Page 5 Tuesday, May 5, 1998 5:20 PM L’information de Sécurité Importante Power A-5 ■ Pour réduire les risques d'incendie ou de choc électrique, installez ce groupe sous abri dans une zone dont la température et l'humidité sont régulées et qui ne contient pas de produits contaminateurs conductifs. ■ Pour garantir le respect des normes internationales de sécurité, utilisez uniquement l'adaptateur électrique remis avec cet appareil.
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SW3800.BK Page 7 Tuesday, May 5, 1998 5:20 PM L’information de Sécurité Importante A-7 porte-fusibles. Pour ce groupe, vous devez uniquement utiliser des fusibles réalisés par le même constructeur et offrant le même pouvoir de coupure et respectant le même type que le fusible d'origine. Refermez le porte-fusibles. Fuse Ports pour fibres optiques Batterie au lithium ■ Pour respecter les normes européennes de sécurité, il ne faut pas monter un fusible de rechange sur l'admission de cet appareil.
SW3800.BK Page 8 Tuesday, May 5, 1998 5:20 PM A-8 APPENDIX A: SAFETY INFORMATION ■ ■ les batteries au lithium ne figurent pas sur la liste EPA des déchets dangereux. Par conséquent, vous pouvez en général vous en débarrasser comme s'il s'agissait d'un déchet normal. si vous souhaitez vous débarrasser de quantités importantes, contactez un service local de gestion des déchets. ■ Le module batteries ne contient aucun produit dangereux. ■ Chaque cellule contient 0,035 gramme de lithium environ.
SW3800.BK Page 9 Tuesday, May 5, 1998 5:20 PM Wichtige Sicherheitsinformationen Power Cord ■ Das Gerät muß an eine geerdete Steckdose angeschlossen werden, die die europäischen Sicherheitsnormen erfüllt. ■ Das Gerät nicht an eine Wechselstromsteckdose anschließen, die nicht geerdet ist. ■ Die Netzsteckdose muß in der Nähe des Geräts und leicht zugänglich sein. Die Stromversorgung des Geräts kann nur durch Herausziehen des Gerätenetzkabels aus der Netzsteckdose unterbrochen werden.
SW3800.BK Page 10 Tuesday, May 5, 1998 5:20 PM A-10 APPENDIX A: SAFETY INFORMATION Fuse Faseroptikanschlüsse - Optische Sicherheit ■ Zur Erfüllung europäischer Sicherheitsnormen darf keine Ersatzsicherung am Geräteeingang angebracht werden. Es dürfen nur Sicherungen vom gleichen Hersteller, der gleichen Marke und Art mit dem Gerät verwendet werden. ■ Niemals mit einem Vergrößerungsgerät ein Übertragungs-LED/Laser betrachten, während dieses eingeschaltet ist.
SW3800.BK Page 11 Tuesday, May 5, 1998 5:20 PM Wichtige Sicherheitsinformationen Lithiumbatterie ■ A-11 Die Lithiumbatterie nach den Empfehlungen des Herstellers durch eine Batterie des gleichen oder eines gleichwertigen Typs ersetzen. WARNHINWEIS: Wird die Batterie falsch ersetzt, besteht Explosionsgefahr. ■ Verbrauchte Batterien nach den Angaben des Herstellers entsorgen. ■ Batterien nicht in Wasser eintauchen oder verbrennen. ■ Die Entsorgungsbestimmungen sind je nach Land verschieden.
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SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM B TECHNICAL SPECIFICATIONS Physical Dimensions Height: 3.5 inches x Width: 17.32 inches x Depth: 17.32 inches Weight: 22 pounds Environmental Requirements Operating Temperature 0 to 40˚ C Storage Temperature -10 to 70 ˚ C Operating Humidity 10% to 95% relative humidity, noncondensing Standards EN60068 (IEC68) Safety Agency Certifications IEC 950, UL 1950, EN60950, CSA 22.2 No.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM B-2 APPENDIX B: TECHNICAL SPECIFICATIONS Standards Supported Ethernet Protocols Used for Administration ISO 8802-3 UDP (RFC 768) IEEE 802.3z/D3 IP (RFC 791) ISO 10038:1993 (IEEE 802.1D) ICMP (RFC 792) IEEE 802.
SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM C TROUBLESHOOTING If you encounter problems when using the Switch, this Appendix may be helpful. If you have a problem which is not listed here or in the release notes, please contact your local technical support representative. LEDs Power LED does not light: Check that the power cable is firmly connected to the device and to the supply outlet. Check the unit fuse. For information on changing the fuse, see Appendix A.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM C-2 APPENDIX C: TROUBLESHOOTING Both sides of the link must have the same setting for autonegotiation. It the two are different, typically the side with autonegotiation disabled will have the link LED lit, and the side with autonegotiation enabled will not be lit. The default configuration for a port is autonegotiation enabled.
SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM Using the Command-Line Interface C-3 Traps are not received by the SNMP Network Manager: Check that the SNMP Network Manager's IP address and community string are correctly configured and that the IP address of the Trap Receiver is configured properly on the Switch. The SNMP Network Manager or Telnet workstation can no longer access the device: Check that Telnet access or SNMP access is enabled.
SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM C-4 APPENDIX C: TROUBLESHOOTING You forget your password and cannot log on: If you are not an administrator, another user having administrator access level can log on, delete your user name, and create a new user name for you, with a new password. Alternatively, another user having administrator access level can log in and initialize the device. This will return all configuration information, including passwords, to the initial values.
SW3800.BK Page 5 Tuesday, May 5, 1998 5:20 PM Using the Command-Line Interface C-5 VLAN Names: There are restrictions on VLAN names. They cannot contain white spaces and cannot start with a numeric value unless you use quotation marks around the name. If a name contains white spaces or starts with a numeric, you must use quotation marks whenever referring to the VLAN name. 802.1Q links do not work correctly: Remember that VLAN names are only locally significant through the command line interface.
SW3800.BK Page 6 Tuesday, May 5, 1998 5:20 PM C-6 APPENDIX C: TROUBLESHOOTING The Switch keeps aging out endstation entries in the Switch Forwarding Database (FDB): Reduce the number of topology changes by disabling STP on those Switches that do not use redundant paths. Specify that the endstation entries are static or permanent. Routing The Switch sees RIP updates but other routers don’t: Ensure that the RIP transmit and receive modes are appropriate for the environment.
SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM D TECHNICAL SUPPORT 3Com provides easy access to technical support information through a variety of services. This appendix describes these services. Information contained in this appendix is correct at time of publication. For the very latest, we recommend that you access 3Com Corporation’s World Wide Web site as described below.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM D-2 APPENDIX D: TECHNICAL SUPPORT Country Data Rate Telephone Number Australia up to 14400 bps 61 2 9955 2073 Brazil up to 14400 bps 55 11 547 9666 France up to 14400 bps 33 1 6986 6954 Germany up to 28800 bps 4989 62732 188 Hong Kong up to 14400 bps 852 2537 5608 Italy (fee required) up to 14400 bps 39 2 27300680 Japan up to 14400 bps 81 3 3345 7266 Mexico up to 28800 bps 52 5 520 7853 P. R.
SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM Support from Your Network Supplier 3ComForum on CompuServe® Online Service D-3 Country Telephone Number Country Telephone Number Australia 1 800 123853 Netherlands 06 0228049 Belgium 0800 71279 Norway 800 11062 Denmark 800 17319 Portugal 0505 442 607 Finland 98 001 4444 Russia (Moscow only) 956 0815 France 05 90 81 58 Spain 900 964 445 Germany 0130 81 80 63 Sweden 020 792954 Italy 1678 99085 U.K.
SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM D-4 APPENDIX D: TECHNICAL SUPPORT Support from 3Com If you are unable to receive support from your network supplier, technical support contracts are available from 3Com. Contact your local 3Com sales office to find your authorized service provider using one of these numbers: Regional Sales Office 3Com Corporation U.S.
SW3800.BK Page 5 Tuesday, May 5, 1998 5:20 PM Returning Products for Repair Returning Products for Repair D-5 Before you send a product directly to 3Com for repair, you must first be obtain a Return Materials Authorization (RMA) number. Products sent to 3Com without RMA numbers will be returned to the sender unopened, at the sender’s expense. To obtain an RMA number, call or fax: Country Telephone Number Fax Number U.S.A.
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SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM GLOSSARY ageing The automatic removal of dynamic entries from the Switch Database that have timed-out and are no longer valid. ARP Address Resolution Protocol. The protocol used to dynamically bind high-level IP addresses to low-level hardware addresses. ARP is used only across a single physical network and is limited to networks that support hardware broadcasts.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM 2 GLOSSARY CSMA/CD Carrier Sense Multiple Access/Collision Detection that is a channel access method used by Ethernet and IEEE 802.3 standards in which devices transmit only after finding the data channel clear for some period of time. When two devices transmit simultaneously, a collision occurs and the colliding devices delay their retransmissions for a random amount of time.
SW3800.BK Page 3 Tuesday, May 5, 1998 5:20 PM 3 LAN latency line speed MAC MIB multicast NVRAM Local Area Network that consists of connected computing resources (such as PCs, printers, and servers) covering a relatively small geographic area (usually not larger than a floor or building). Characterized by high data rates and low error rates. The delay between the time a device receives a frame and the time the frame is forwarded out of the destination port. See baud rate. Media Access Control.
SW3800.BK Page 4 Tuesday, May 5, 1998 5:20 PM 4 GLOSSARY on a wide range of computers and networking equipment and may be used to manage many aspects of network and endstation operation. Spanning Tree Protocol (STP) A bridge-based mechanism for providing fault tolerance on networks. STP works by allowing the implementation of parallel paths for network traffic, and ensuring that redundant paths are disabled when the main paths are operational and enabled if the main paths fail.
SW3800.BK Page 1 Tuesday, May 5, 1998 5:20 PM INDEX INDEX disconnecting a Telnet session 3-7 dynamic entries 6-1 dynamic routes 8-3 E EMC statement ii Events (RMON group) 9-13, 9-14 Numerics 3Com Bulletin Board Service (3ComBBS) D-1 3Com sales offices D-4 3Com URL D-1 3ComFacts D-2 3ComForum D-3 A accounts, creating 3-3 alarms 9-15 Alarms (RMON group) 9-13, 9-14 B BOOTP 3-5 Bridge Identifier 7-3 bridge priority, configuring 4-14, 7-11 bulletin board service D-1 F factory defaults 1-10 fax service.
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SW3800.
SW3800.
SW3800.BK Page 2 Tuesday, May 5, 1998 5:20 PM 3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT THE ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY CUSTOMER’S OR ANY THIRD PERSON’S MISUSE, NEGLECT, IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR OR MODIFY, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE, LIGHTNING, OR OTHER HAZARD.
