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Chapter 5
Clustering Switches
Network Port
A network port cannot link cluster members. For more information about the network port, see the
"Enabling a Network Port" section on page
NAT Commands
When you create a cluster, 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 Long-Reach Ethernet (LRE) switches that use 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 that use different private profiles.
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:
•
•
•
•
This section assumes you have already cabled the switches, as described in the switch hardware
installation guide, and followed the guidelines described in the
page
Refer to the release notes (http://www.cisco.com/univercd/cc/td/doc/product/lan/c2900xl/index.htm) for
Note
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.
78-6511-08
Enabling a Command Switch, page 5-20
Adding Member Switches, page 5-21
Creating a Cluster Standby Group, page 5-23
Verifying a Switch Cluster, page 5-25
5-5.
Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide
7-6.
"Planning a Switch Cluster" section on
Creating a Switch Cluster
5-19
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Troubleshooting
