Juniper SRX5400 Hardware Manual page 361

Table 55: Expected Device Behavior and Minimum SRX5K-SCBE and Fabric Plane Requirements (continued)
Number of
Platform SRX5K-SCBs
SRX5800 3
NOTE: In SRX5600 and SRX5800 Services Gateways, failover does not happen when the
secondary Routing Engine in slot 1 fails, while the SCB in slot 1 is inactive.
For detailed information about chassis cluster, see the
www.juniper.net/documentation/.
Active Redundant
Planes Planes
4 2
Chassis Cluster User Guide for Security Devices
Expected Behavior After the SCB and
Routing Engine are Removed
This device supports one SCB for two fabric
planes, providing a redundancy of three SCBs.
If the active SCB fails, the device behavior
does not change as the remaining two SCBs
fulfill the requirement to have four fabric
planes.
If the second SCB also fails, no spare planes
are available in the chassis triggering
inter-chassis redundancy. Therefore, RG1+
will fail over to the secondary node.
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