Replacing A Failed Command Switch With A Cluster Member - Cisco Catalyst 3550 series Software Configuration Manual
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Chapter 37
Troubleshooting
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 have redundant connectivity between the member switches and the replacement command
switch. This section describes two solutions for replacing a failed command 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.
Step 3
Start a CLI session on the new command switch.
You can access the CLI by using the console port or, if an IP address has been assigned to the switch, by
using Telnet. For details about using the console port, refer to the switch hardware installation guide.
Step 4
At the switch prompt, enter privileged EXEC mode:
Switch> enable
Switch#
Step 5
Enter the password of the failed command switch.
Step 6
Enter global configuration mode.
Switch# configure terminal
Enter configuration commands, one per line.
Remove the member switch from the cluster.
Step 7
Switch(config)# no cluster commander-address
Step 8
Return to privileged EXEC mode.
Switch(config)# end
Switch#
Use the setup program to configure the switch IP information. This program prompts you for IP address
Step 9
information and passwords. From privileged EXEC mode, enter setup, and press Return.
Switch# setup
Continue with configuration dialog? [yes/no]: y
At any point you may enter a question mark '?' for help.
Use ctrl-c to abort configuration dialog at any prompt.
Default settings are in square brackets '[]'.
78-11194-09
Replacing a failed command switch with a cluster member
Replacing a failed command switch with another switch
--- System Configuration Dialog ---
End with CNTL/Z.
Catalyst 3550 Multilayer Switch Software Configuration Guide
Using Recovery Procedures
37-7
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Table of Contents
Troubleshooting
