I suggest you open a service request and have a PSE take a look at your array.

So no CRC or other errors accumulating on the switch port?

Does the error message indicate which front-end port is failing?

Perhaps move the FA to a different switch port.

If the switch port is the only part of the storage infrastructure used by the problem FA you may want to look at replacing the cable between array and switch port.

Fibre Channel front-end has failed or is inoperable. there is no specific FA in the error message. Any inputs

PSE logged in and checked the DMX, there is no issue on DMX side. he suspect external network.

we checked our SAN side mostly CISCO but nothing could be seen.

if anyone else faced this kind of issue and if it is external network what it could be??

You should see the issuing director in the symevent output. Take a look at the second column of the symevent output with heading  "Dir".

If you think you ahve a bad director issue this command:

symcfg -sid xxxx list -dir all  (will list all directors)

symcfg -sid xxxx list -FA all (will only list FA's)

Look for any director port that has Dead listed in it.

Hello Friends,

All the FAs and RF went offline at least for 30 seconds. I have never seen this in my career.. it happened two times within the time span of 2 hours. EMC's explanation was Low Cache on the R2 Frame of SRDF.. it reached bottle neck and was sending back the request because of heavy application server started recently. Now resolved by increasing the cache by EMC Customer engineer.

Thanks for all your help. It was almost a Disaster situation.