In the device architecture of dual PEMs, this article explains the expected behaviour of any PEM when the power cable is not connected to it.
When the SRX1500 has two PEMs installed, PEM0 and PEM1, if the power cable is not connected to any of the PEMs, the expected behaviour is as follows.
An alarm has to be generated as follows:
user@srx> show chassis alarms
1 alarms currently active
Alarm time Class Description
2023-12-28 04:20:06 EST Minor PEM 1 Not OK
PEM should report "offline"
user@srx> show chassis power | no-more
node0:
--------------------------------------------------------------------------
PEM 0:
State: Online
Capacity: 400 W (maximum 400 W)
DC output: 84 W (zone 0, 7.00 A at 12.00 V, 21% of capacity)
PEM 1:
State: Offline
DC output: 0 W (zone 0, 0.00 A at 0.00 V, 0% of capacity)
PEM status should be "Check" or "NOT OK"
user@srx> show chassis environment no-forwarding
Class Item Status Measurement
Temp PEM 0 OK 30 degrees C / 86 degrees F
PEM 1 Check
If any of the commands do not show the expected output, please reachout to JTAC for further investigation with required logs as below:
RSI:
user@srx>request support information | save /var/log/rsi_YYYY-MM-DD.txt
Var log: (Collect this from both nodes in case of cluster) Please login to the device with root credentials and then generate the logs.
user@srx>file archive compress source /var/log/* destination /var/tmp/logs_YYYY-MM-DD.tgz **(replace YYYY-MM-DD with date)
PEM may have to be replaced after a thorough investigation of logs.