[c-nsp] Anyone running s3223-advipservicesk9_wan-mz.122-33.SXI4a?

Jens S Andersen jsa at aua.auc.dk
Thu Sep 2 02:04:10 EDT 2010


Hi Peter

The router is doing layer2 and 3. (OSPF, HSRP, PVST)
The router is totally unresponsive, even after the loop is broken (by shutting
an interface on the neighbour-router). 
Power off helps.....

Logging on to the other routers is difficult/impossible because they are
overloaded. Would a scheuler allocate make any difference here?

All I can see in the logfiles is host/address-flapping and storm-control kicking
in.

Jens

>On Wed, 2010-09-01 at 16:26 +0200, Jens S Andersen wrote:
>> 2 weeks ago i upgraded my WS-C6503-E/WS-SUP32-GE-3B to ios
>> advipservicesk9_wan-mz.122-33.SXI4a.
>>
>> Since then I've seen 2 cases of layer 2 loop. This switch/router forms
>> a layer 2 "ring" with 3 other switch/routers (for redundancy). This
>> has ben working for years without problems.
>>
>> Has anyone experienced stability-problems with this IOS version?

>Plain L2 switching with switchports? Or something more exotic?

>What do the switches themselves say about it? Have you tried STP
>debugging or been able to observe the problem while it happens?

>I guess everybody's seen loops of some kind, but most times there's an
>explanation.

>--
>Peter


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Jens S Andersen                 Email:  jsa at adm.aau.dk
Aalborg University              Telf:   9940 9464
Selma Lagerlöfs Vej 300, 4.2.59 Fax:    9940 7593
9220 Aalborg
Denmark


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