[Users] interpreting ibdiagnet output

[Susan Coulter]

On Sep 17, 2012, at 11:48 AM, Narayan Desai wrote:

> Is there a canonical place that describes the errors reflected in
> ibdiagnet output, and potential resolutions?

IBTA Volume 1 is your friend.
http://www.infinibandta.org

> I'm trying to fix up a
> qdr fabric, and am seeing a combination of:
> - symbol errors (these are pretty clear; i'm assuming that cable
> replacement is the solution in a lot of these cases)
> - ipoib speed errors (the group is at 10 gbit, but the network is
> capable of 40; is this a cosmetic error, or will it cause actual
> performance problems?)

These will slow your performance.
Reseating cables, and/or replacing cables/HCAs usually fixes this.

> - pages of multicast errors (not really sure what to do here)
> - nagging issues with arping (which i suspect might have to do with
> the previous multicast errors)
> 
> Various vendor docs describe how to run ibdiagnet, but don't do any
> more than reproduce some output. I'm happy to RTFM, but a fair big of
> googling has not revealed with FM to R. ;)
> -nld
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====================================

Susan Coulter
HPC-3 Network/Infrastructure
505-667-8425
Increase the Peace...
An eye for an eye leaves the whole world blind
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