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Catalyst 3560 Switch Software Configuration Guide
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Chapter 47 Troubleshooting
Recovering from a Command Switch Failure
Step 6 Enter global co nfiguration mode:
Switch# configure terminal
Step 7 Change the password:
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#
Step 9 Write the running configuration to the startup configuration file:
Switch# copy running-config startup-config
The new password is now in the startup configuration.
Note 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.
Step 10 You must now reconfigure the switch. If the system administrator has the backup switch and VLAN
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 6, “Clustering Switches” and Chapter 40, “Configuring HSRP. Also see the Getting Started
with Cisco Network Assistant, available on Cisco.com.
Note HSRP is the preferred method for supplying redundancy to a cluster.
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.