Connecting J Series Hardware to Create a Chassis Cluster

To create a J Series chassis cluster, you must physically connect a pair of the same kind of supported J Series devices back-to-back over a pair of Gigabit Ethernet connections. The connection that serves as the control link must be the built-in interface ge-0/0/3. The fabric link connection can be a combination of any pair of Gigabit Ethernet interfaces on the devices.

Note: You can connect two fabric links between the two devices in the cluster to reduce the chance of fabric link failure. See Understanding Chassis Cluster Dual Fabric Links.

Figure 102 shows two J Series devices connected using the built-in interfaces for both the fabric and control links.

Figure 102: Connecting J Series Devices in a Cluster (J6350 Devices)

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Note: When chassis clustering is enabled on a J Series router, two interface ports are used to link the two devices: the ge-0/0/3 interface (fxp1 port) is used for the control interface and one port is used for the fabric link (using either one of the built-in interfaces (ge-0/0/0 or ge-0/0/1) or one of the ports of a uPIM). Also, the ge-0/0/2 interface (fxp0 port) is used for the management link. This means that three of the four onboard Gigabit Ethernet ports are in use; if additional ports are required for transit traffic, then a PIM or uPIM is required.

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