Disconnect in management VLAN

[ramifahim]

Dear colleagues

I have two core switches 6513 and 30 access switches (Edge switches) 2950T connected to these core switches.

Each access switch have two VLANs one for hosts (different by switch) and other for Management (Common for all switches VLAN 20)

Now I have a problem in Management VLAN 20 that it suffer a lot of discontinuity in all access switches, can any one help me about it??? ( hosts did not suffer any type of discontinuity )

Regards

Rami Azem

[Edison Ortiz]

Let's see the 'show spanning-tree summary' from both core switches.

[ramifahim]

Dear EdisonOrtiz

this is what we get :

see the attached file

Thanks

Rami Azem

[Edison Ortiz]

Layer 2 config looks good. You mentioned you are getting disconnects on the management VLAN between switches, when you get disconnects, are you able to ping the switch ? Have you verified for duplicate IP addressing on that VLAN ? How about the default gateway on each 2950 ?

Can I see a config from a 2950 ?