Allied Telesis AT-8700XL Series Switch - Manual (Page 80)

80 AT-8700XL Series Switch User Guide
Software Release 2.6.1
C613-02030-00 REV B
If PING to the end destination fails, PING intermediate network addresses. If
you can successfully PING some network addresses, and not others, you can
deduce which link in the network is down.
Note that if Network Address Translation (NAT) is configured on the remote switch,
PINGing devices connected to it may give misleading information.
For more information about using PING, see the Internet Protocol (IP) chapter in
the AT-8700XL Series Software Reference.
Troubleshooting IP Configurations
Telnet Fails
1. If Telnet to switch fails
Check that the IP address you used matches the one assigned to the switch.
To check that RIP is configured correctly, enter the command:
SHOW IP RIP
To check that the IP Telnet server is enabled on each switch, enter the
command.
SHOW IP
If the Telnet server is disabled, enable the Telnet server with the command:
ENABLE TELNETSERVER
2. If Telnet to host fails
If Telnet into a host on the remote LAN fails, but works into the remote
switch, check that the IP address you are using is correct. To check that
both switches are gateways, not servers, enter the command:
SHOW IP
The “IP Packet Forwarding” field in the output should be set to “Enabled”.
Refer to the documentation for the host TCP/IP software for more
information about configuring a gateway.
The host’s TCP/IP software should be configured to use the Head Office
switch as its gateway. Refer to the documentation for the host TCP/IP
software for more information about configuring a gateway.
3. Contact your authorised distributor or reseller for assistance
If problems persist, contact your authorised distributor or reseller for
assistance.