[c-nsp] 6500 VTP and VLANs disappearing

Chris Phillips cphillips at wbsconnect.com
Fri Feb 13 17:54:58 EST 2009


I've had this happen twice.  Both times we were running VTP transparent, 
both times on 6509s with SUP720-3BXL and both times on 12.2.18-SXF*. 
We've not had this happen again since moving to 12.2.33-SXI.

Mike Louis wrote:
> Hey all,
> I just ran across an issue I have never seen before. We have a switch configured with about 250 VLANs and SVIs. The switch is configured in VTP transparent mode. Everything has been working fine until this morning we added a couple more vlans. After that we noticed that all but about 80 of the VLANs in the VTP database were missing. Somehow they got erased. No one was in the device since this happened and its configured in trans mode. Any ideas what could have happened? We put the VLANs back in and everything came up fine for now.
> Anyone ever heard of something like this happening? Is there a max number of L3 interfaces for 6500?
> Mike Louis
> Senior Solutions Architect
> CCIE  #17082 (R&S)
> NWN, Inc
> mobile:336.253.5247
> mlouis at nwnit.com
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Chris Phillips

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