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The trunk port connected to Router 6 is what causing the VLANS not to be pruned on that link.
Define a switchport trunk allowed on the trunk port to R6 such that only allow say 2 vlans and u should see only the two vlans passed down the link between SW1 and SW2. Thanks
—–Original Message—– From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of sathappan sathappan Sent: Sunday, May 25, 2008 1:02 PM To: Cisco certification Subject: VTP pruning and Trunk interfaces
Dear GS,
I am working on a LAB exercise. Sw1 is the VTP server and Sw2, sw3, sw4 are clients. I have configured the trunk links between Sw1 - Sw2, sw1- sw3, Sw1 - sw4 and have allowed all the VLANs. Then there was a task to configure switchport connecting to Router 6 as dot1q trunk on switch 2. Followed was a task for enabling VTP pruning.
I was able to get the desired result for pruning on the links between sw1 - SW3 and SW1 - SW4, But in the link between SW1-SW2 the pruning was not happening and all the vlans were allowed eventhough there were some vlans which are not locally assigned.
But once I removed the dot1q trunk on the switch2 going to one of the router, I was able to saw the desired pruning result.
But as per the LAB solutions, this was not the case.
can some body tell me what went wrong?
with thanks sathappan