Network OS Administration Guide

Supporting Network OS 6.0.1a

Part Number: 53-1003768-04

Logical chassis cluster mode characteristics

The following are the main characteristics of logical chassis cluster mode:

  • The maximum number of nodes supported in a logical chassis cluster is 48.
  • This mode supports in-band management (through eth0 on management modules) over virtual Ethernet (VE) interfaces.
  • In-Band Management is supported in Logical Chassis mode on VDX devices.
  • If you use in-band management only, and wish to disable the management interface (which is considered out of band), refer to the shutdown (interface) command in the NOS Command Reference.
  • Physical connectivity requirements for logical chassis cluster deployment are the same as those for fabric cluster deployment.
  • A single global configuration exists across all nodes, while each node can contain its unique local configuration. However, each node contains the local configuration information for all other nodes in the cluster.
  • When an RBridge is rejoining the logical chassis cluster, the interface-level configuration is reset to the default values.
  • Global and local configurations for the entire logical chassis cluster are performed from one node —the principal node only.
  • Startup configurations are not maintained by the cluster; each node preserves its running configuration.
  • A logical chassis cluster can be transitioned into a fabric cluster while preserving configurations, if you follow the steps provided later in this section
  • An existing fabric cluster can be transitioned into a logical chassis cluster while preserving configurations, if you follow the steps provided later in this section
  • Cluster-wide firmware upgrades can be performed.
  • Cluster-wide supportSave can be performed.