Allied Telesis 2.6.1 Troubleshooting IP Configurations, To set Ping defaults, enter the command

114 AT-8800 Series Switch User Guide

To set PING defaults, enter the command:

SET PING [{[IPADDRESS=]ipadd[IPXADDRESS=]network:station [APPLEADDRESS=]network.node}] [LENGTH=number] [NUMBER={numberCONTINUOUS}] [PATTERN=hexnum] [{SIPADDRESS=ipaddSIPXADDRESS=network:stationSAPPLEADDR ESS=network.node}] [SCREENOUTPUT={YESNO}] [TIMEOUT=number] [TOS=number]

To display the default PING settings and summary information, enter the command:

SHOW PING

The stop a PING that is in progress, enter the command:

STOP PING

If you can PING the end destination, then the physical and layer 2 links are functioning, and any difficulties are in the network or higher layers.

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-8800 Series Switch 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

Software Release 2.6.1 C613-02039-00 REV A