[f-nsp] Packet loss on MLXe-4

[Mike Tindle]

If you're getting loss between cards but not while traffic stays on a card, check your (h)SFMs.  You can usually take one out of service without impact.   You can see their load with "sh sfm-ut all" and then walk them off one at a time ("power-off snm [#]") to see if the packet loss goes away.   You can also see if they're having issues with "sh sfm-link all err" but I believe that would have shown up in logs. 

We've found a couple bad ones this way and they can be an absolute nightmare to discover since they'll report everything fine. 

The other option could be a bad TM on a card but those usually throw errors as well. 

Regards,
Mike
  

On Sep 17, 2013, at 1:17 PM, Frank Bulk <frnkblk at iname.com> wrote:

> We inserted an MLXe-4 into a Brocade ring this morning and it didn't go so
> well.  We saw most IP video traffic (1.3 Gbps) not flow through, and when we
> moved an inter-border router link from eth 1/2 to eth 2/2 we saw significant
> packet loss on other Internet VLANs (all on eth 1/x).  Moving it back
> resolved the issue.
> 
> We have two SFMs and have two four-port 10G cards, one is a NI-XMR-10Gx4 and
> the other is a BR-MLX-10Gx4-X.  We also have a BR-MLX-1GCx24-X in slot 3
> that we're not using, yet.  We're running 5.4.0d and the FPGAs are at the
> correct releases.
> 
> The ring goes in one 10G port on the one 10G card and through another 10G
> port on the other 10G card.
> 
> Are there any compatibility issues between the two cards?  Placement
> requirements?  Any obvious reasons why we experienced all that traffic loss?
> 
> Regards,
> 
> Frank
> 
> 
> 
> _______________________________________________
> foundry-nsp mailing list
> foundry-nsp at puck.nether.net
> http://puck.nether.net/mailman/listinfo/foundry-nsp
> 

*----------- H U R R I C A N E - E L E C T R I C ---------->>
| Mike Tindle | Senior Network Engineer | mtindle at he.net
| ASN 6939 | http://www.he.net | 510-580-4126
*--------------------------------------------------->>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/foundry-nsp/attachments/20130917/7cba3091/attachment.html>