Cisco SG550X - after update firmware - issue all PoE ports

[Zdenek Jirsa]

Hi, 
we have 8 units Cisco SG550X, connected to the stack. After a firmware update we have a problem with one unit, all PoE ports stopped powering the device (operational status fault). 

I removed the unit from the stack, reset to factory default, but no change.

PoE ports are working fine - 2.5.0.83, 2.5.0.90, 2.5.0.92, 2.5.5.47
PoE ports - Operational status fault - 2.5.9.15, 2.5.9.13, 2.5.8.15, 2.5.8.12, 2.5.7.85

We have two SG550X-24P-K9 units, the difference is in the HW version.
PID VID: SG550X-24P-K9 V04 - no problem with firmware higher than 2.5.5.47
PID VID: SG550X-24P-K9 V05 - since 2.5.7.85 PoE port fault

Please, do you have similar experience or any idea?

Thanks in advance.

[balaji.bandi]

Just to clarity even after rollback to working version the PoE ports still not working

if that is the case, time for Open a TAC case and if required RMA

[Zdenek Jirsa]

Hi, 

after roolback to 2.5.5.47 and lower PoE ports are working fine (PID VID: SG550X-24P-K9 V05). Therefore I believe it is a software (firmware) issue.

Thanks

[marce1000 · Accepted solution]

 - If rollback works , then .....             -> https://www.cisco.com/c/en/us/support/web/tsd-cisco-small-business-support-center-contacts.html

 M.

[balaji.bandi]

Sure if the rollback works, time to work with SMB TAC to investigate for you.