I have what seems to be a very basic question, but even after doing many searches, and reading CCNP books,
I am not able to get a clear answer.
My Question :-
I have 3 switches A <--> B <---> C, with links between A&B and B&C set as
switchport mode trunk
switchport allowed vlan all
Switch B is in TRANSPARENT mode,
Switch A (Server) and C (client) use VTP.
Switch A and C have VLAN 5 configured
Now, If I want traffic over VLAN 5 to pass from a host on Switch A through to a host on Swiych C, do I need to :-
MANUALLY configure VLAN 5 on switch B ??????
Or will trunk traffic pass right through Switch B ?
Also, if switch B is non-cisco & NON-VLAN aware, but can accept jumbo frames, will vlan 5 make it across from A to C ?
Your'e not missing anything basic and it's a very good question.
I think the key issue here is it doesn't really make a lot of sense to have VTP server/client switches and then stick a VTP transparent switch in the middle. Either make all switches VTP transparent or use VTP Server/client on all switches. Mixing the 2 is as you say just creating more administration issues.
Personally i am a big fan of VTP transparent as it is inherently more secure and less easy to make a mistake with eg. overwriting the vlan database but in very large and dynamic environments there is a case for a VTP Server/client setup.
You need to have vlan 5 on the intermediate switch or traffic will not flow.
If switch B was non-vlan aware then only the native vlan would be allowed to pass so vlan 5 would have to be the native vlan on the trunk links.