Recovering From A Command Switch Failure; Replacing A Failed Command Switch With A Cluster Member - Cisco WS-C3560-48PS-S Software Configuration Manual

Recovering from a Command Switch Failure

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.
This procedure is likely to leave your switch virtual interface in a shutdown state. You can see which
Note
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.
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. This section describes 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, refer to the release notes.

Replacing a Failed Command Switch with a Cluster Member

To replace a failed command switch with a command-capable member in the same cluster, follow these
steps:
Step 1 Disconnect the command switch from the member switches, and physically remove it from the cluster.
Step 2 Insert the member switch in place of the failed command switch, and duplicate its connections to the
cluster members.
Catalyst 3560 Switch Software Configuration Guide
35-8
Replacing a Failed Command Switch with a Cluster Member, page 35-8
Replacing a Failed Command Switch with Another Switch, page 35-10
and Chapter 31, "Configuring HSRP."
Chapter 35 Troubleshooting
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