Cisco Catalyst 2960 series Ports disabled when connecting vmware esx server

[isaac.manu]

I have a Cisco Catalyst 2960 series switch.

When I connect another switch or a VMWare Esx server on one of the ports, the port blinks for few seconds and then goes off.

When I connect a desktop or laptop or a windows server the ports stay led and I can access resources on the network. However, when connect another switch or a vmware esx server, the port is disabled.

What config in the switch can I check to make sure the ports stay on regardless when I connect a desktop / laptop, switch or vmware server?

Thankyou for your help.

Regards

-Isaac Manu

[smehrnia]

hi,

could u post the show run | inc interface [number] ?

it could be a spanning tree setting, like bpdu guard on the interface.

plz Rate if it helped.

Soroush.

[Leo Laohoo]

Hi Isaac,

Can you post the output to the following commands:

1.  sh interface ; and

2.  sh interface status err