Maintenance and Troubleshooting

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To get debugging output, enter the command:

SHOW DEBUG

Depending on the problem, the support personnel may also ask you for the output from the following commands (see the Monitoring and Fault Diagnosis section in the Operations chapter, AT-8800 Series Switch Software Reference):

SHOW EXCEPTION

SHOW STARTUP

SHOW LOG

SHOW CPU

SHOW BUFFER

Resetting Switch Defaults

To restart the switch at any time with no configuration, enter the command:

RESTART SWITCH CONFIG=NONE

If boot.cfg has changed, to set it back to the default configuration by saving the default dynamic configuration to the boot.cfg file, enter the command:

CREATE CONFIG=boot.cfg

To set the switch to restart with the boot configuration file, enter the command:

SET CONFIG=boot.cfg

DO NOT clear the FLASH memory completely. The software release files are stored in FLASH, and clearing it would leave no software to run the switch.

Checking Connections Using PING

If an aspect of the router’s configuration dependent on access to a server functions incorrectly, PINGing the server from the switch, and the switch from the server, is a useful first step in diagnosis.

You can use PING (Packet Internet Groper) to check whether there is a connection between the switch and another routing interface in the network. Use the router’s extended PING command over IPv4, IPv6, IPX and AppleTalk network protocols. PING sends echo request packets in the chosen format, and displays responses at the terminal. Enter the command:

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

Software Release 2.6.1 C613-02039-00 REV A

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Allied Telesis 2.6.1 manual Resetting Switch Defaults, Checking Connections Using Ping, Maintenance and Troubleshooting 113