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Catalyst 3560 Switch Software Configuration Guide
78-16156-01
Chapter 5 Clustering Switches
Planning a Switch Cluster
Access Modes in CMS
If your cluster has these cluster member switches running earlier software releases and if you have
read-only access to these cluster member switches, some configuration windows for those switches
display incomplete information:
• Catalyst 2900 XL or Catalyst 3500 XL cluster member switches running Cisco IOS
Release 12.0(5)WC2 or earlier
• Catalyst 2950 cluster member switches running Cisco IOS Release 12.0(5)WC2 or earlier
• Catalyst 3550 cluster member switches running Cisco IOS Release 12.1(6)EA1 or earlier
These switches do not support read-only mode on CMS:
• Catalyst 1900 and Catalyst 2820
• Catalyst 2900 XL switches with 4-MB CPU DRAM
In read-only mode, these switches appear as unavailable devices and cannot be configured from CMS.
For more information about CMS access modes, see the “Access to Older Switches In a Cluster” section
on page 3-7.
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 cluster command switch displays all options available from the switch cluster.
Therefore, features specific to a cluster 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.
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