[c-nsp] VLAN int down on 3925, but spanning tree shows forwarding on that VLAN

[Matlock, Kenneth L]

Are there any other L3 VLAN interfaces on the chassis? I'm not sure
about that particular one, but a lot of the smaller Cisco switches only
support 1 active L3 interface, since they're switches, not full-blown
routers.

Ken Matlock
Network Analyst
Exempla Healthcare
(303) 467-4671
matlockk at exempla.org


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Church, Charles
Sent: Thursday, January 27, 2011 11:38 AM
To: nsp-cisco
Subject: [c-nsp] VLAN int down on 3925, but spanning tree shows
forwarding on that VLAN

Anyone seen this before, 3925 running 15.0(1)M4, with a 4 port ESW card.
VLAN int is down/down, while 'show vlan-switch' shows vlan active.  Show
spanning tree for this VLAN shows a switchport on the 4 port card
forwarding on this VLAN.  It's happened a couple times to us on this
device.  Shutting and un-shutting the VLAN interface brings it up, it'll
be fine for days then.  Any ideas?

Thanks,

Chuck 


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