SuperStack Switch User Guide
 3Com Corporation 5400 Bayfront Plaza Santa Clara, California
 Contents
 Installation and Setup
 Virtual Lans Vlans
 Forwarding Database FDB
 Quality of Service QOS
 Using the WEB Interface
 Technical Specifications Troubleshooting
Page
 About this Guide
Ethernet concepts Ethernet switching and bridging concepts
 Icon Description
Conventions
Convention Description
Screen displays
 Documentation
Related
Year
Compliance
 About this Guide
 Switch
Switch 9100 Overview
Features
About
 Simple Network Management Protocol Snmp
 Virtual LANs VLANs
For information on load sharing, refer to Chapter
 Quality of Service QoS
Configuration
Network
Example
 Key
Switch 9100 used in a backbone configuration
 View
Front panel has the following features
Ports
 LEDs
Describes the LED behavior on the Switch
Standard Media Type Mhz/Km Rating Maximum Distance
Color Indicates 1000BASE-SX Port Status LEDs
 Color Indicates 100/1000BASE-TX Port Status LEDs
Switch 9100 Rear shows the Switch 9100 rear view
Unit Status LED
 Reset Button
Power Sockets
Serial Number
MAC Address
 Public
 Determining
Installation and Setup
Location
 Tabletop
Installing
Rack Mounting
 Installing the Switch 9100
 Function Pin Number Direction
Connecting Equipment to the Console Port
 Switch
 Flashes until the switch has successfully passed the Post
Installation
 Login admin
Default Vlan named default
Logging on for
First Time
 Installation and Setup
 Accessing the Switch
 Accessing the Switch
 Be a range of numbers, for example
You could enter the following shortcut
 Config vlan name ipaddress ipaddress
Symbol Description
Config snmp community readonly readwrite string
Reboot date time cancel
 Line-Editing Keys
Create account admin user username encrypted password
 Command Description
 Disable cli-config-logging
Disable bootp vlan name all
Disable clipaging
Disable idletimeout
 Unconfig switch all
Configuring Management Access
Show banner
3C177052
 Account Name Access Level
Changing the Default Password
3C1770519#
 Viewing Accounts
Create account admin user username encrypted
Show accounts
 Using Access
Methods Managing Switch
Profiles
Deleting an Account
 Config access-profile accessprofile
 To view the contents of an access profile, type
Access Profile Example
 To view the Telnet configuration, type
Using Telnet
Connecting to Another Host Using Telnet
Using a Bootp Server
 Manually Configuring the IP Settings
 Config iproute add default ipaddress metric
Config vlan name ipaddress ipaddress subnetmask
For example
Your changes take effect immediately
 Show session
Terminate the session by using the following command
Clear session sessionnumber
 Using the Web
Commands
On the switch
IP Host
 Accessing Switch
Using Snmp
Agents
Supported MIBs
 Enable Snmp traps
Enable Snmp access
 Command
 Options for the ping command are described in Table
Ping command syntax is
Checking Basic
Connectivity
 Configuring Switch Port Speed Duplex Setting
Switch 9100 Ports
Enabling
Disabling
 Enable ports portlist
Enable learning ports portlist
Enable sharing masterport
Config ports portlist qosprofile
 Disable ports portlist
Disable learning ports portlist
Disable sharing masterport
Show ports portlist txerrors
 Accessing the Switch
 Enable sharing 4 grouping
 Port-Mirroring
Configuration
Verifying the Load
Sharing
 Disable mirroring
Commands
Example
Show mirroring
 Accessing the Switch
 VLANs provide extra security
VLANs help to control traffic
 VLANs ease the change and movement of devices
Igmp Overview
Igmp Snooping
 Enable igmp snooping
Enable igmp vlan name
Forward-mcrouter-only Forward-mcrouter-only is specified,
 Port-Based VLANs
Types of VLANs
 Marketing Finance Sales
Spanning Switches with Port-Based VLANs
 Switch
 AccountingEngineering
 Assigning a Vlan Tag
Uses of Tagged VLANs
 Tagged Ports
Shows a logical diagram of the same network
 Mixing Port-Based and Tagged VLANs
 NetBIOS DECNet IPX8022
Following protocol filters are predefined on the switch
Predefined Protocol Filters
AppleTalk
 Defining Protocol Filters
Config protocol protocolname add protocoltype Hexvalue
Create protocol protocolname
 Deleting a Protocol Filter
Vlan Names
Packets Over Protocol
 On the Switch
Configuring VLANs
 6 to it
 To display Vlan settings, use the following command
Displaying Vlan Settings
Show vlan name
 Deleting VLANs
 Virtual Lans Vlans
 Forwarding Database FDB
 Associating a QoS Profile with an FDB Entry
 Disable learning ports
Config fdb agingtime number
Entries
Following example adds a permanent entry to the FDB
 Displaying FDB Entries
To display FDB entries, use the command
Show fdb macaddress vlan name portlist Permanent
 Delete Fdbentry macaddress vlan
Removing FDB
Name Clear fdb macaddress vlan name portlist
 Forwarding Database FDB
 Overview
Spanning Tree Protocol STP
Spanning Tree
Protocol
 Network with an illegal topology
 Traffic flowing through Bridge B
Initialization
 Domains
Reconfiguration
Stabilization
 STPD2 contains VLANs Manufacturing and Engineering
 Stpd
 Marketing & Sales Marketing, Sales & Engineering
 Config stpd stpdname add vlan name
Configuring STP on the Switch
Enable stpd stpdname
Create stpd stpdname
 Enable stpd port portlist
Shows the commands used to configure STP
 Displaying STP
Settings
Through 3, and port
 Listed in Table
Resetting STP
 Spanning Tree Protocol STP
 Quality of Service
Quality of Service QOS
Building Blocks
 QoS Profiles
 Profile Name Priority Minimum Bandwidth Maximum Bandwidth
 Vlan
 Dynamic MAC Addresses
Permanent MAC addresses
 Verifying MAC-Based QoS Settings
Command to clear the FDB is as follows
Or the command
Blackhole
 Enable dot1p replacement ports portlist all
Config dot1p type dot1pvalue qosprofile qosname
802.1p Packets
Physical and Logical Groupings
 Verifying Physical and Logical Groupings
Source Port
 Displaying QoS Information QoS Monitor
Verifying Configuration Performance
Show ports portlist qosmonitor
 Disable qosmonitor
Enable qosmonitor port port
 Configuring QoS
 Quality of Service QOS
 Status Monitoring Statistics
 Show switch
Show log config
Show log priority
Show memory
 Port Statistics
To view port statistics, use the following command
Accuracy
 To view port transmit errors, use the following command
Port Errors
To view port receive errors, use the following command
 Display Keys
Port Monitoring
Logging
 Where the following is true
Is specific to the problem
Level Description
Clear log static
 Configure remote logging by using the following command
To configure the log display, use the following command
Real-Time Display
 Disable syslog
Disable log display
 On the network
Rmon features supported by the switch
Allows you to monitor LANs remotely
Clear Counters
 Statistics
Alarms
History
 Improving Efficiency
Events
Allowing Proactive Management
Reducing the Traffic Load
 Alarms
Rmon Group Support Supplied by the Switch Statistics
History
Events
 Action High Threshold
Enable disable rmon
 Status Monitoring and Statistics
 Enabling Disabling Web Access
Using the WEB Interface
To re-enable Web access, use the following command
 Accessing the Web
Setting Up Your
Browser
 Task Frame
Navigating the Web Interface
Webserver busy
 Status Messages
Browser Controls
Selection Type Key Sequence
 Saving Changes
Configuring a Vlan
Do a Get When
 Using the WEB Interface
 Secondary image and configuration file on the switch
Software Upgrade and Boot Options
Downloading a
New Image
 Saving
Rebooting the Switch
Changes
 Upgrading
 Software Upgrade and Boot Options
 Show configuration
Boot Option
Cancel option
Save configuration primary
 Software Upgrade and Boot Options
 Safety Information
 Information
Important Safety
 Lithium Battery
 Appendix a Safety Information
 Sécurité Importante
’information de
 Appendix a Safety Information
 Batterie au lithium
 Europe
Wichtige Sicherheitsinformat ionen
 Lithiumbatterie
Warnung Faseroptikanschlüsse Optische Sicherheit
 Appendix a Safety Information
 Technical Specifications
 Terminal Emulation
Protocols Used for Administration
 LEDs
Troubleshooting
 Switch does not power up
Using Command-Line Interface
Snmp Network Manager cannot access the device
Telnet workstation cannot access the device
 Permanent entries remain in the FDB
Traps are not received by the Snmp Network Manager
 Port Configuration No link light on 100/1000BASE-TX port
You forget your password and cannot log
Excessive RX CRC errors
 VLANs You cannot add a port to a Vlan
No link light on Gigabit fiber port
 Vlan names
VLANs, IP Addresses and default routes
802.1Q links do not work correctly
 Using the Command-Line Interface
 Appendix C Troubleshooting
 Technical Support
Services
Online Technical
 Username anonymous
Access by Analog Modem
Hours a day, 7 days a week
Country Data Rate Telephone Number
 847 262
Access by Digital Modem
408 727
 Country Telephone Number Asia, Pacific Rim
Europe, South Africa, and Middle East
 Country Telephone Number Fax Number
Page
 Glossary
 Broadcast
Bridge
Broadcast storm
Collision
 Glossary
 Latency
IP address
Line speed
Loop
 Port trunks See load sharing
 Resilient link
Repeater
Router
Segment
 Switch Database
Switch
Standby port
Telnet
 Glossary
 Index
Admin
Numbers
 FDB
 Rmon
 Tftp
 Index
 Index
 Index of Commands
 118
 Index of Commands
 Index of Commands
 3Com Corporation Limited Warranty
 Warranties Exclusive
 Governing LAW
 EMC Statements