N7k error logs

[Asim Afzal]

hi

We had following critical error on the Nexus switch on 3rd July which caused full module restart and all fiber links going down. We need to investigate the root cause for this issue and raise support call for the same:

2013 Jul  3 16:24:51 ADDC-Core-Nexus %MODULE-2-MOD_DIAG_FAIL: Module 2 (serial: JAF1432CGNH) reported failure due to Service on linecard had a hap-reset in device 134 (device error 0x282)

Kick start version 4.2.4

Please Advise

[Reza Sharifi]

Hi,

If your module was reset, you maybe hitting a bug on the image. Open a ticket with TAC and send them the log file.

If upgrading the image does not help, you may have to RMA the module.

HTH

[InayathUlla Sharieff]

Asim,

It looks like you are hitting bug: CSCtg97646 and not CSCti20899.

1- http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCtl60367

2- http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCtg97646

3-http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCti20899

This is caused due to a unstable Laser source on one of the ports which is causing a continous interrupts resulting

In a HAP reset. This has been fixed  5.0.3 and later versions.

IF you can isolate and fix the unstable laser source, then it should not

cause this hap-reset to happen.

This is not a hardware problem.

The fix for the issue is available in NX-OS version 4.2(8) and other latest

versions. This defect is triggered by RX LOS on the interfaces causing

excessive interrupts to be raised.

Also, I see that you are running 4.2(4) version. As per the below link, the

recommended version is 4.2(6). So I would suggest to upgrade the box to any

latest code available.

http://www.cisco.com/en/US/docs/switches/datacenter/sw/nx-os/recommended_rel

eases/recommended_nx-os_releases.html.

HTH

Regards

Inayath

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