Network OS Administration Guide

Supporting Network OS 6.0.1a

Part Number: 53-1003768-04

Logical chassis cluster mode configuration

In logical chassis cluster mode, any operation that results in writing to the configuration database gets automatically distributed. There are no exceptions.

Each node in the logical chassis cluster maintains an individual copy of the configuration to enable high availability of the cluster. The following figure illustrates nodes in a logical chassis cluster. Each node has its own databases, and the databases kept by each node are identical at all times.

Figure 12. Configuration database in a logical chassis cluster

Network OS switches contain both global and local configuration. In a logical chassis cluster, a single global configuration exists across all cluster members, while each individual member has its own local configuration. (Conversely, in fabric cluster mode, each cluster member can have its own unique global configuration.)

Global configuration is required for cluster-wide operations, whereas local configuration is specific to the operation of an individual node. For more information and examples of each type of configuration, refer to Examples of global and local configurations.