Understanding Chassis Cluster Formation

To form a chassis cluster, a pair of the same kind of supported SRX-series devices or J-series devices are combined to act as a single system that enforces the same overall security. For SRX 5600 and SRX 5800 chassis clusters, the placement and type of Services Processing Cards (SPCs) must match in the two clusters. For SRX 3400 and SRX 3600 chassis clusters, the placement and type of SPCs, Input/Output Cards (IOCs), and Network Processing Cards (NPCs) must match in the two devices.

For J-series chassis clusters, although the devices must be the same kind, they can contain different Physical Interface Modules (PIMs).

When a device joins a cluster, it becomes a node of that cluster. With the exception of unique node settings and management IP addresses, nodes in a cluster share the same configuration.

You can deploy up to 15 chassis clusters in a Layer 2 domain. Clusters and nodes are identified in the following way:

• A cluster is identified by a cluster ID (cluster-id) specified as a number from 1 through 15.
• A cluster node is identified by a node ID (node) specified as a number from 0 to 1.

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