◦ Port Status and Port Counters screens
◦ Diagnostic tools (Link test, Ping test, configuration file browser)
• For help in isolating problems, use the easy-to-access switch console built into the switch or Telnet to the
switch console. For operating information on the Menu and CLI interfaces included in the console, see
chapters 3 and 4. These tools are available through the switch console:
◦ Status and Counters screens
◦ Event Log
◦ Diagnostics tools (Link test, Ping test, configuration file browser, and advanced user commands)
Browser or Telnet access problems
Cannot access the WebAgent
• Access may be disabled by the Web Agent Enabled parameter in the switch console. Check the setting on this
parameter by selecting:
2. Switch Configuration
1. System Information
• The switch may not have the correct IP address, subnet mask, or gateway. Verify by connecting a console to
the switch's Console port and selecting:
2. Switch Configuration
5. IP Configuration
Note: If DHCP/Bootp is used to configure the switch, the IP addressing can be verified by selecting:
1. Status and Counters...
2. Switch Management Address Information
Also check the DHCP/Bootp server configuration to verify correct IP addressing.
• If you are using DHCP to acquire the IP address for the switch, the IP address "lease time" may have expired
so that the IP address has changed. For more information on how to "reserve" an IP address, see the
documentation for the DHCP application that you are using.
• If one or more IP-authorized managers are configured, the switch allows inbound telnet access only to a
device having an authorized IP address. For more information on IP Authorized managers, see the access
security guide for your switch.
• Java
™
applets may not be running on the web browser. They are required for the switch WebAgent to operate
correctly. Refer to the online Help on your web browser for how to run the Java applets.
Cannot Telnet into the switch console from a station on the network
• Off-subnet management stations can lose Telnet access if you enable routing without first configuring a static
(default) route. That is, the switch uses the IP default gateway only while operating as a Layer 2 device. While
routing is enabled on the switch, the IP default gateway is not used. You can avoid this problem by using the ip
Chapter 16 Troubleshooting 307
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