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SRX Series

Connecting SRX Series Devices to Create a Chassis Cluster

An SRX Series chassis cluster is created by physically connecting two identical cluster-supported SRX Series devices together using a pair of the same type of Ethernet connections. The connection is made for both a control link and a fabric (data) link between the two devices.

Note: You can connect two control links (SRX1400 Services Gateways and SRX5000 and SRX3000 lines only) and two fabric links between the two devices in the cluster to reduce the chance of control link and fabric link failure. See Understanding Chassis Cluster Dual Control Links and Understanding Chassis Cluster Dual Fabric Links.

Control links in a chassis cluster are made using specific ports.

You must use the following ports to form the control link on the branch SRX Series devices:

For SRX100 devices, connect the fe-0/0/7 on node 0 to the fe-1/0/7 on node 1.
For SRX110 devices, connect the fe-0/0/7 on node 0 to the fe-1/0/7 on node 1.
For SRX210 devices, connect the fe-0/0/7 on node 0 to the fe-2/0/7 on node 1.
For SRX220 devices, connect the ge-0/0/7 on node 0 to the ge-3/0/7 on node 1.
For SRX240 devices, connect the ge-0/0/1 on node 0 to the ge-5/0/1 on node 1.
For SRX550 devices, connect the ge-0/0/1 on node 0 to the ge-9/0/1 on node 1.
For SRX650 devices, connect the ge-0/0/1 on node 0 to the ge-9/0/1 on node 1.

For a device from the SRX1400 or SRX3000 line, the connection that serves as the control link must be between the built-in control ports on each device.

SRX5000 line devices do not have built-in ports, so the control link for these gateways must be the control ports on their Services Processing Cards (SPCs) with a slot numbering offset of 3 for SRX5400, offset of 6 for SRX5600 devices and 12 for SRX5800 devices.

When you connect a single control link on SRX3000 or SRX5000 line devices, the control link ports are a one-to-one mapping with the Routing Engine slot. If your Routing Engine is in slot 0, you must use control port 0 to link the Routing Engines.

Note: For dual control links on SRX3000 line devices, the Routing Engine must be in slot 0 and the SRX Clustering Module (SCM) in slot 1. The opposite configuration (SCM in slot 0 and Routing Engine in slot 1) is not supported.

For dual control links on SRX1400 devices, both control (ports 10 and 11) links that are present in the SYSIO can be configured as dual control ports for redundancy.

Dual control-link is not supported on SRX5400 due to limited number of slots.

The fabric link connection for the SRX100 must be a pair of Fast Ethernet interfaces and for the SRX210 must be a pair of either Fast Ethernet or Gigabit Ethernet interfaces. The fabric link connection must be any pair of either Gigabit Ethernet or 10-Gigabit Ethernet interfaces on all other SRX Series devices.

Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10, Figure 11, Figure 12 and Figure 13 all show pairs of SRX Series devices with the fabric links and control links connected.