Management and Configuration Guide K/KA/KB.15.15

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.
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 route command to configure a static
(default) route before enabling routing.
• Telnet access may be disabled by the Inbound Telnet Enabled parameter in the System
Information screen of the menu interface:
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
• 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.
Browser or Telnet access problems 369