VTP Version 2 and 3

[mainodin87]

Hi Team,

can any one please put a light on the main difference we have in VTP V2 and V3.

and is there any other way to secure our VTP beside using Password ?

Thank you,

Mainodin

[Karsten Iwen]

For the features and differences, read the following document from cisco.com. It explains version 3 very good: VTP version 3

And yes, using passwords is the main security feature for VTP. Making sure that user devices are not connected through trunks could be a secondary security measure.

[mainodin87]

Hey karsten

Thanks for the link  .. I gone through it before posting my query here .. I need main diffrnce in more technical terms

[Joseph W. Doherty]

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Posting

Unless you're looking to get down into the VTP packets, technically, the main difference between VTP v2 and v3 is the latter is much more controlled.  In v2, servers and clients, only really differ in the former allows user config changes and the latter does not.  (Which is why, in v2, it's possible to "blow up" a VTP domain by adding a "client".)  In v3, server and client roles are different "under the covers".

V3 has other enhancements over v2.  For example, I recall (?) v2 passwords are passed as clear text, but I recall (?) v3 password are passed encrypted.