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5 – Diagnostics/Troubleshooting
Recovering a Switch
5-12 59042-06 A
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5.3
Recovering a Switch
A switch can become inoperable or unmanageable for the following reasons:
Firmware becomes corrupt
IP address is lost
Switch configuration becomes corrupt
Forgotten password
In these specific cases, you can recover the switch using maintenance mode.
Maintenance mode temporarily returns the switch IP address to 10.0.0.1 and
provides opportunities to do the following:
Unpack a firmware image file
Restore the network configuration parameters to the default values
Remove all user accounts and restore the Admin account name password to
the default.
Copy the log file
Restore factory defaults for all but user accounts and zoning
Restore all switch configuration parameters to the factory default values
Reset the switch
Display firmware versions stored on the switch
Select the firmware image to activate
To recover a switch, do the following:
1. Place the switch in maintenance mode. Press and hold the Maintenance
button with a pointed tool for 2–4 seconds. When the Input Power LED alone
is illuminated, release the button.
2. Allow one minute for the switch to complete its tests. When the switch is in
maintenance mode, the Input LED will be illuminated and the Heartbeat LED
will illuminate continuously. All other chassis LEDs will be extinguished.
3. Establish a Telnet session with the switch using the maintenance mode IP
address 10.0.0.1.
4. Enter the maintenance mode account name and password (prom, prom),
and press the Enter key.
Sanbox login: prom
Password:xxxx
[username@anteater:Itasca]% telnet 10.0.0.1
Trying 10.0.0.1...
Connected to 10.0.0.1.
Escape character is '^]'.