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Fibre channel driver received an interrupt from the adaptor indicating a LASER FAULT

 
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SuperDome_1
Advisor

Fibre channel driver received an interrupt from the adaptor indicating a LASER FAULT

I'm trying to restore from tape, and finding the above message continously scrolling down the screen. I've tried using a serial cable, but see the same error message, which prevents me from doing any work. Is there a patch / fix for this issue. The message I see is

Frame Manager Status Register : 0x050210D0
0/0/10/0/0 : Fibre Channel Driver received an interrupt indicating a LASER FAULT which is a link failure state

I've also changed fibre cables and also used another port, but still get the same error mesage.

Thx in advance
4 REPLIES 4
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Sridhar Bhaskarla
Honored Contributor
Solution

Re: Fibre channel driver received an interrupt from the adaptor indicating a LASER FAULT

Hi,

A laser fault indicates a hardware issue with the adapter. You will have to replace the fiber channel card at the slot 0/0/10/0/0.

You already confirmed it by changing the fiber cables.

-Sri
You may be disappointed if you fail, but you are doomed if you don't try
Steven E. Protter
Exalted Contributor

Re: Fibre channel driver received an interrupt from the adaptor indicating a LASER FAULT

The card is dead.

The laser is build into the card.

Recite the prayer for dead hardware and make arrangements to replace it.

SEP
Steven E Protter
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SuperDome_1
Advisor

Re: Fibre channel driver received an interrupt from the adaptor indicating a LASER FAULT

Thx for your reply and confirmation..

I've seen this more often than not, on fibre channel adaptors on N Class / RP8400 Servers..

Is is just because the products have reached an end of life.. or is it just wear and tear..

Thx

Angus Crome
Honored Contributor

Re: Fibre channel driver received an interrupt from the adaptor indicating a LASER FAULT

One other possible solution (If you have an A5158A Card). If you have a spare, you can try swapping out the GBIC's (the lasers). You lift the metal band and pull out (note the orientation), and this can be done online.
The WWPN ans WWNN are hard coded to the card itself, so you won't have any problems with changed addressing.

Be very careful putting them back in though, as they are fragile.

Some of the other cards have removable GBIC's as well, but the older cards (A3740A and the like) do not.
There are 10 types of people in the world, those who understand binary and those who don't - Author Unknown