Specifications

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Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
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Chapter 5 Clustering Switches
Creating a Switch Cluster
NAT Commands
When a cluster is created, Network Address Translation (NAT) commands are added to the configuration
file of the command switch. Do not remove these commands.
LRE Profiles
A configuration conflict occurs if a switch cluster has LRE switches using both private and public
profiles. If one LRE switch in a cluster is assigned a public profile, all LRE switches in that cluster must
have that same public profile. Before you add an LRE switch to a cluster, make sure that you assign it
the same public profile used by other LRE switches in the cluster.
A cluster can have a mix of LRE switches using different private profiles.
For more information about the Catalyst 2900 LRE XL switches and LRE technology, refer to the
Catalyst 2900 XL and Catalyst 3500 XL documentation for Cisco IOS Release 12.0(5)WC2.
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” section on page 5-18
• “Adding Member Switches” section on page 5-19
• “Creating a Cluster Standby Group” section on page 5-21
• “Verifying a Switch Cluster” section on page 5-23
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 5-4.
Note Refer to the release notes (http://www.cisco.com/univercd/cc/td/doc/product/lan/c2900xl/index.htm)
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.