Recovering From A Command Switch Failure - Cisco Catalyst 2928 Software Configuration Manual

Chapter 33 Troubleshooting
Switch (config)# enable secret password
The secret password can be from 1 to 25 alphanumeric characters, can start with a number, is case
sensitive, and allows spaces but ignores leading spaces.
Step 8 Return to privileged EXEC mode:
Switch (config)# exit
Switch#
Write the running configuration to the startup configuration file:
Step 9
Switch# copy running-config startup-config
The new password is now in the startup configuration.
Note
You must now reconfigure the switch. If the system administrator has the backup switch and VLAN
Step 10
configuration files available, you should use those.

Recovering from a Command Switch Failure

This section describes how to recover from a failed command switch. You can configure a redundant
command switch group by using the Hot Standby Router Protocol (HSRP). For more information, see
Chapter 5, "Clustering Switches."
HSRP is the preferred method for supplying redundancy to a cluster.
Note
If you have not configured a standby command switch, and your command switch loses power or fails
in some other way, management contact with the member switches is lost, and you must install a new
command switch. However, connectivity between switches that are still connected is not affected, and
the member switches forward packets as usual. You can manage the members as standalone switches
through the console port, or, if they have IP addresses, through the other management interfaces.
You can prepare for a command switch failure by assigning an IP address to a member switch or another
switch that is command-capable, making a note of the command-switch password, and cabling your
cluster to provide redundant connectivity between the member switches and the replacement command
switch. These sections describe two solutions for replacing a failed command switch:
•
•
These recovery procedures require that you have physical access to the switch.
For information on command-capable switches, see the release notes.
OL-23389-01
This procedure is likely to leave your switch virtual interface in a shutdown state. You can see
which interface is in this state by entering the show running-config privileged EXEC command.
To re-enable the interface, enter the interface vlan vlan-id global configuration command, and
specify the VLAN ID of the shutdown interface. With the switch in interface configuration
mode, enter the no shutdown command.
Replacing a Failed Command Switch with a Cluster Member, page 33-8
Replacing a Failed Command Switch with Another Switch, page 33-9
Recovering from a Command Switch Failure
Catalyst 2928 Switch Software Configuration Guide
33-7