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Catalyst 2950 Desktop Switch Software Configuration Guide
78-14982-01
Chapter 6 Clustering Switches
Creating a Switch Cluster
Availability of Switch-Specific Features in Switch Clusters
The menu bar on the command switch displays all options available from the switch cluster. Therefore,
features specific to a member switch are available from the command-switch menu bar. For example,
Device > LRE Profile appears in the command-switch menu bar when at least one
Catalyst 2900 LRE XL switch is in the cluster.
Creating a Switch Cluster
Using CMS to create a cluster is easier than using the CLI commands. This section provides this
information:
• Enabling a Command Switch, page 6-19
• Adding Member Switches, page 6-20
• Creating a Cluster Standby Group, page 6-22
• Verifying a Switch Cluster, page 6-24
This section assumes you have already cabled the switches, as described in the switch hardware
installation guide, and followed the guidelines described in the “Planning a Switch Cluster” section on
page 6-5.
Note Refer to the release notes for the list of Catalyst switches eligible for switch clustering, including which
ones can be command switches and which ones can only be member switches, and for the required
software versions and browser and Java plug-in configurations.
Enabling a Command Switch
The switch you designate as the command switch must meet the requirements described in the
“Command Switch Characteristics” section on page 6-3, the “Planning a Switch Cluster” section on
page 6-5, and the release notes.
Note • We strongly recommend that the highest-end, command-capable switch in the cluster be the
command switch:
–
If your switch cluster has a Catalyst 3550 switch, that switch should be the command switch.
–
If your switch cluster has Catalyst 2900 XL, Catalyst 2950, and Catalyst 3500 XL switches, the
Catalyst 2950 should be the command switch.
–
If your switch cluster has Catalyst 1900, Catalyst 2820, Catalyst 2900 XL, and
Catalyst 3500 XL switches, either the Catalyst 2900 XL or Catalyst 3500 XL should be the
command switch.
You can enable a command switch, name the cluster, and assign an IP address and a password to the
command switch when you run the setup program during initial switch setup. For information about
using the setup program, refer to the release notes.