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Cisco EtherSwitch Service Modules Feature Guide
How to Configure a Switch Cluster
60
Cisco IOS Release 12.2(25)SEC
Adding Cluster Members to the Cisco EtherSwitch Service Module
This section shows how to add cluster members to the Cisco EtherSwitch service module.
The cluster command service module or switch automatically discovers candidate Cisco EtherSwitch
service modules or switches. When you add new cluster-capable switch service modules or switches to
the network, the cluster command service module or switch discovers them and adds them to a list of
candidate service modules or switches.
Note A switch stack in a cluster equates to a single cluster member. There is a restriction specific to adding
cluster members through Network Assistant. From Network Assistant, you can create a Cisco
EtherSwitch service module or switch cluster with up to 15 cluster members. From Network Assistant
or the CLI, you can create a Cisco EtherSwitch service module or switch cluster with up to 144 devices.
Note You can add 1 or more Cisco EtherSwitch service modules as long as the total number of service modules
in the cluster does not exceed 16 (this includes the cluster command service module). When a cluster
has 16 members, the Add to Cluster option is not available for that cluster. In this case, you must remove
a cluster member service module before adding a new one.
If a password has been configured on a candidate Cisco EtherSwitch service module or switch, you are
prompted to enter it before the service module or switch can be added to the cluster. If the candidate
Cisco EtherSwitch service module switch does not have a password, any entry is ignored.
If multiple candidate Cisco EtherSwitch service modules or switches have the same password, you can
choose them as a group, and add them at the same time.
If a candidate Cisco EtherSwitch service module or switch in the group has a password different from
that of the group, only that specific candidate service module or switch is not added to the cluster.
When a candidate service module or switch joins a cluster, it inherits the command service module or
switch password.
Prerequisites
Network Assistant must be enabled.
SUMMARY STEPS
Use these steps from the Network Assistant application.
1. Close the Add to Cluster window.
2. Choose View > Refresh.
3. Choose Cluster > Add to Cluster
or
Choose Add to Cluster by displaying the Topology view and right-clicking a candidate service
module icon.
Instead of using Network Assistant, you can use these commands from the CLI:
1. cluster member [n] mac-address H.H.H [password enable-password] [vlan vlan-id]
2. password enable-password