VLAN problem with SONET/SDH Equipment

Unanswered Question
Jun 30th, 2010

Hi all,

Recently I did a test with 2x 2960 and 2x SDH equipment from Haliplex. According to the vendor they're on Layer 1 only.

As per the diagram, we have a Catalyst 2960 on each end. Both Gi0/1 on the 2 switches are configured as trunk. So I have 2 laptop plugged in on the switches and we can ping each other. When I create a 2nd VLAN on both the switches, I get error message "vlan ID mismatch" and some peer inconsistency error. I show spanning-tree and I see the Gi0/1 status is BKN. I believe it meant broken.

Have anyone encounter this kind of issue before?

I have this problem too.
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spremkumar Fri, 07/02/2010 - 04:15


can you post the config of both the switches and also the show logs ouput with the error messages you are getting over there.


tookenyip12 Mon, 07/05/2010 - 00:30

Hi what's a VCG? Anyway, I will get the error logs from the customer site tomorrow or the day after.


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