Juniper SRX 5800, Hardware Manual

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The output of the show chassis power command shows that the number of feeds on PEM 1 expected
is the same as the feeds connected.
5. Issue the CLI show chassis alarms command to check if the alarm is removed.
> show chassis alarms
No alarms currently active
The output of the show chassis alarms command shows no active alarms.
Behavior of the SRX5400, SRX5600, and SRX5800 Services Gateways
When the SRX5K-SCBE and SRX5K-RE-1800X4 in a Chassis Cluster Fail
It is important to understand the behavior of the SRX5400, SRX5600, and SRX5800 Services Gateways
when the Switch Control Board (SRX5K-SCBE) and Routing Engine (SRX5K-RE-1800X4) in the chassis
cluster fail.
NOTE: This procedure is also applicable for SCB3 except that SCB3 redundancy is supported.
NOTE: We strongly recommend that you perform the ISHU during a maintenance window, or
during the lowest possible traffic as the secondary node is not available at this time.
NOTE: The SRX5K-SCBE and SRX5K-RE-1800X4 are not hot-swappable.
NOTE: Four fabric planes must be active at any time in a chassis cluster. If fewer than four fabric
planes are active, then the Redundancy Group (RG1+) will fail over to the secondary node.
Table 71 on page 456 shows the minimum fabric plane requirements for the SCB.
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