VTP traffic via Transparent mode switch

Unanswered Question
Jun 17th, 2009

Hi, I have three switches SW1->SW2-SW3.

Sw1 and 3 are not directly connected. SW1 & 3 are in same VTP domain, SW2 is in transport mode. All switches are connected with Trunk.

My question is, all Vlans on SW1 will propagate to SW3 or not ?

I have this problem too.
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Istvan_Rabai Wed, 06/17/2009 - 22:35

Hi Rupesh,

This is an excerpt from the catalyst switch documentation:

http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.1/13ew/configuration/guide/vtp.html#wp1020402

Version-Dependent Transparent Mode:

-In VTP version 1, a VTP transparent network device inspects VTP messages for the domain name and version, and forwards a message only if the version and domain name match.

- in VTP version 2, because only one domain is supported in the supervisor engine software, VTP version 2 forwards VTP messages in transparent mode, without checking the version.

Cheers:

Istvan

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