Network OS Administration Guide

Supporting Network OS 6.0.1a

Part Number: 53-1003768-04

Selecting a principal node for the cluster

Logical chassis cluster principal node behavior includes:

  • All configuration for the logical chassis cluster must be performed on the principal node.
  • By default, the node with the lowest WWN number becomes the principal node.
  • You can run the show vcs command to determine which node is the principal node. An arrow in the display from this command points to the WWN of the principal node.
  • You can select any node in the logical chassis cluster to become the principal by running the logical chassis principal priority command, followed by the logical-chassis principal switchover command, as shown in the following example (in this example, RBridge ID 5 is being assigned with the highest priority):
switch# configure
switch(config)# rbridge-id 5
switch(config-rbridge-id-5)# logical-chassis principal-priority 1
switch(config-rbridge-id-5)# end
switch# logical-chassis principal-switchover

A lower number means a higher priority. Values range from 1 to 128.

Until you run the logical-chassis principal switchover command, the election of the new principal node does not take effect.