[c-nsp] CRC16 in 'show cont fia' on GSR 12810

[Drew Weaver]

Well,

The reason I ask is we were seeing this:


SLOT 1:Mar 27 08:00:03 EDT: %FIA-3-LOS: LOS for slot 21 was cleared.

SLOT 1:Mar 27 08:01:21 EDT: %FIA-3-LOS: LOS for slot 21 was detected.

SLOT 1:Mar 27 08:01:25 EDT: %FIA-3-LOS: LOS for slot 21 was cleared.

SLOT 1:Mar 27 08:01:43 EDT: %FIA-3-LOS: LOS for slot 21 was detected.

SLOT 1:Mar 27 08:01:47 EDT: %FIA-3-LOS: LOS for slot 21 was cleared.

SLOT 1:Mar 27 08:02:09 EDT: %FIA-3-LOS: LOS for slot 21 was detected.

SLOT 1:Mar 27 08:02:15 EDT: %FIA-3-LOS: LOS for slot 21 was cleared.

SLOT 1:Mar 27 08:05:24 EDT: %FIA-3-LOS: LOS for slot 21 was detected.

So we shutdown slot 21 temporarily and we haven't seen that message again, so I can only deduce that possibly Slot 21 is bad and hopefully not SLOT 1 =)

-Drew


-----Original Message-----
From: Sascha E. Pollok [mailto:nsp-list at pollok.net] 
Sent: Wednesday, March 31, 2010 1:31 PM
To: Drew Weaver
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] CRC16 in 'show cont fia' on GSR 12810

Hello Drew,

> Slot:     18         19         20         21         22
> Name:    sfc0       sfc1       sfc2       sfc3       sfc4
>       --------   --------   --------   --------   --------
> los    0          0          0          0          0
> state  Off        Off        Off        Off        Off
> crc16  2          2          2          0          2
>
> is it normal to see crc16s on the connection between the LCs and the SFCs?

we have also seen those coming up from time to time. However,
if those are not increasing, the cause might simply be a CSC
failover, linecard insertion (don't know for sure) or whatever.
2 crc16 errors should not do harm. We saw those constantly increasing
when we had a faulty CSC in a 12008.

Sascha