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5 – Diagnostics/Troubleshooting
Recovering a Switch
59042-01 A 5-9
5.3
Recovering a Switch
A switch can become inoperable or unavailable 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 force PROM mode.
Force PROM 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
To recover a switch, do the following:
1. Place the switch in force PROM mode. Do the following:
a. Power down the switch.
b. Press and hold the Reset/Force PROM button with a pointed tool, then
power up the switch. All chassis LEDs will illuminate, then extinguish
leaving only the Input Power LED illuminated. Release the button.
2. Allow one minute for the switch to complete its tests. When the switch is in
force PROM 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 force PROM mode IP
address 10.0.0.1.
4. Enter the force PROM 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 ’^]’.