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Example: Configuring Chassis Cluster Redundancy Groups

Requirements

Before you begin:

1. Set the chassis cluster node ID and cluster ID. See Example: Setting the Chassis Cluster Node ID and Cluster ID.
2. Configure the chassis cluster management interface. See Example: Configuring the Chassis Cluster Management Interface.
3. Configure the chassis cluster fabric. See Example: Configuring the Chassis Cluster Fabric.

Overview

A chassis cluster redundancy group is an abstract entity that includes and manages a collection of objects. Each redundancy group acts as an independent unit of failover and is primary on only one node at a time.

In this example, you create two chassis cluster redundancy groups, 0 and 1:

• 0—Node 0 is assigned a priority of 100, and node 1 is assigned a priority of 1.
• 1—Node 0 is assigned a priority of 100, and node 1 is assigned a priority of 1.

The preempt option is enabled, and the number of gratuitous ARP requests that an interface can send to notify other network devices of its presence after the redundancy group it belongs to has failed over is 4.

Configuration

CLI Quick Configuration

To quickly configure a chassis cluster redundancy group, copy the following commands and paste them into the CLI:

Step-by-Step Procedure

1. Specify a redundancy group's priority for primacy on each node of the cluster. The higher number takes precedence.
   {primary:node0}[edit]user@host# set chassis cluster redundancy-group 0 node 0 priority 100 user@host# set chassis cluster redundancy-group 0 node 1 priority 1 user@host# set chassis cluster redundancy-group 1 node 0 priority 100 user@host# set chassis cluster redundancy-group 1 node 1 priority 1
2. Specify whether a node with a higher priority can initiate a failover to become primary for the redundancy group.
   {primary:node0}[edit]user@host# set chassis cluster redundancy-group 1 preempt
3. Specify the number of gratuitous ARP requests that an interface can send to notify other network devices of its presence after the redundancy group it belongs to has failed over.
   {primary:node0}[edit]user@host# set chassis cluster redundancy-group 1 gratuitous-arp-count 4

Results

From configuration mode, confirm your configuration by entering the show chassis cluster status redundancy-group commands. If the output does not display the intended configuration, repeat the configuration instructions in this example to correct it.

If you are done configuring the device, enter commit from configuration mode.

Verification

Verifying Chassis Cluster Redundancy Group Status

Purpose

Verify the status of a chassis cluster redundancy group.

Action

From operational mode, enter the show chassis cluster status redundancy-group command.

Cluster ID: 1
Node                  Priority          Status    Preempt  Manual failover

Redundancy group: 1 , Failover count: 1
    node0                   100         secondary    no       no
    node1                   1           primary      yes      no