Chassis Cluster Setup and Configuration Page Options

Chassis Cluster

Redundant ether-Interface Count

Specifies the number of redundant Ethernet Interfaces to be created for the cluster.

Specify a value between 1 and 128.

For information about the maximum number of redundant Ethernet interfaces allowed for each device type, see the JUNOS Software Security Configuration Guide.

Heartbeat Interval

Specifies, in milliseconds, how often heartbeats are sent out to the other nodes in the cluster.

The default heartbeat interval is 1000.

Specify a value between 1000 and 1200.

Heartbeat Threshold

Specifies the number of consecutive missed heartbeats that indicate a cluster failure.

The default number is 3.

Specify a value between 3 and 8.

Nodes

Specifies the nodes to be used for the chassis cluster.

To specify a node, select the node from the list and click Add.

To delete a node, select the node you want to delete and click Delete.

Group Number

Displays the selected redundancy group information or creates or modifies a redundancy group.

Select a group number from the list of configured redundancy groups.

• To modify information for a redundancy group, select the corresponding group number. Specify a value between 1 and 128.
• To create a new redundancy group:
  • Assign a group ID to the redundancy group. Specify a value between 1 and 128.
  • Configure the redundancy group with information described in the rest of this table.

The maximum number of redundancy groups is equal to the number of redundant Ethernet interfaces that you configure.

Gratuitous ARP Count

For a redundancy group, specifies the number of gratuitous Address Resolution Protocol (ARP) requests that a newly elected master sends out on the active redundant Ethernet interface child links to notify network devices of a change in mastership on the redundant Ethernet interface links.

The default value is 4.

Specify a value between 1 and 16.

Preempt

For a redundancy group, allows a node with a better priority to initiate a failover. By default, this feature is disabled. When disabled, a node with a better priority does not initiate a redundancy group failover (unless some other factor, such as faulty network connectivity identified for monitored interfaces, causes a failover).

Select the check box.

Priorities

For a redundancy group, specifies the priority value of each node. The redundancy group becomes primary on the node with the best (higher) priority.

By default, this feature is disabled.

Select a node and a priority number, then click Add. The value is a number between 1 and 225.

Interface Monitor

For a redundancy group, specifies the interfaces to be monitored by the redundancy group and their respective weights.

Select the interface from the list and enter its weight. The value is a number between 1 and 255.