[c-nsp] Catalyst 2950 freezing

Christian Kratzer ck-lists at cksoft.de
Mon Dec 19 05:56:07 EST 2011


On Mon, 19 Dec 2011, Henry-Nicolas Tourneur wrote:

> Hi all,
> For one of our customer, we'v a Cisco Catalyst 2950 located in their
> premises, through this switch we deliver an internet access as well as a
> voice service.
> The switch has a really basic cfg: 3 ports connected, 1 trunk and 1 port per
> service.
> From time to time, the switch freezes completely (all services down, switch
> unreachable).
> Obviously, we already swapped the switch several times, check the logs,
> errors counters . and nothing solved our issue.
> Even more weird, this morning we saw a traffic spike at 50mbps (services are
> 4mbps and 1mbps) on every ports while they are inside separated VLAN (so
> even an L2 loop shouldn't do this).

can you show how the customer facing ports have been configured ?

Also you might want to check the output of "show interface Gi0/x switchport" and look for config issues in the current state of the port.

Possible the customer has something strange in their network.



Christian Kratzer                      CK Software GmbH
Email:   ck at cksoft.de                  Wildberger Weg 24/2
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Web:     http://www.cksoft.de/         Geschaeftsfuehrer: Christian Kratzer

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