VTP Domain query

[tyagivijay]

Hello,

Can two machines in two different VTP Domains can communicate with each other ??

Thanks in advance

[Kevin Dorrell]

As far as data is concerned, they can communicate with each other on those VLAN numbers that are defined in both domains.

Let me add a proviso ... provided the VLANs are not automatically pruned by the VTP.

Of course, they will not exchange VLAN database information. But they can exchnage data.

Kevin Dorrell

Luxembourg

[tyagivijay]

Hello Kevin ,

Thanks for the info .

What I understand that 2 different VTP domain will not stop machines in different domians to communicate with each other as long as VTP pruning is disabled & Inter Vlan Routing is configured.

Please correct me if I am wrong ??

Thanks

Vijay

[Kevin Dorrell · Accepted solution]

That's the way I understand it too.

Third condition: the VLAN (number) should exist in both domains.

I wasn't sure about the requirement to disable pruning, but I do know that pruning depends on VTP, so if the two domains are not talking VTP to each other they cannot pass pruning information to each other. Now, I am not sure whether this would risk pruning a VLAN from a trunk when it shouldn't be pruned, or whether it would say "He's not telling me anything about his use of the VLANs, so I'd better forward them all". For that reason I would disable the pruning (which is the default anyway.) It would be interesting to do the experiment though.

Kevin Dorrell

Luxembourg