Description

After trying to unplug the online feb module, it will not automatically switch to another feb module.

This is when PSM is in 1+1 redundancy state

Solution

Number of FEBs required for operation

ACX7509-BASE systems: one FEB

ACX7509-PREMIUM systems: two FEBs

 

If you want to run 2 RCB + 2 FEB, which is Premium, you need 2+2 PSM redundancy as per document.

https://www.juniper.net/documentation/us/en/hardware/acx7509/topics/concept/acx7509-feb.html


When you have 2+2 PSM, the FEB will switchover fine to standby.

Modification History

2025-02-20 : Article Created