VTP join message format

Unanswered Question
Jun 10th, 2007

According to number of cisco websites there

there are 4 types of VTP messages :



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VTP join message

There doesn't seem to be any information concerning the VTP join message or its parameters (from a protocol point of view) compared to the

other types.

if someone knows of books or websites that dwells into the details of VTP join message would be greatly appreciated.


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ariela Mon, 06/11/2007 - 06:57


the mechanism used by VTP to allow the communication of VTP pruning information is known as the VTP Join message.

Check this output, and focus on "join":

Console> (enable) show vtp statistics

VTP statistics:

summary advts received 4690

subset advts received 7

request advts received 0

summary advts transmitted 4397

subset advts transmitted 8

request advts transmitted 0

No of config revision errors 0

No of config digest errors 0

VTP pruning statistics:

Trunk Join Trasmitted Join Received Summary advts received from

non-pruning-capable device

-------- --------------- ------------- ---------------------------

1/1 0 0 0

1/2 0 0 0

Remember that network devices in VTP transparent mode do not send VTP Join messages

for more infos: "CCNP Self-Study CCNP Practical Studies: Switching"




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