VTP join message

[janklaas.kesteloot]

There are 4 VTP message types:

-Summary advertisements

-Subset advertisement

-Advertisement requests

-VTP join messages

However, I am looking for the packet format of the VTP join message. Elsewhere I found the following:

"VTP Join Messages are similar to the Advertisement Request messages but with a different Message Type field value and a few more parameters."

However, I would like to know the exact format of the packet.

Greetz,

JK

[wdrootz]

VTP Join message contains VTP domain name, and a VLAN bit string. If the bit is set, flood traffic for that VLAN should be received on that trunk. Each trunk port maintains a state variable per VLAN - Joined/Pruned. If the state is Joined, the trunk port is allowed to send broadcast and flooded unicast traffic on this VLAN. If the state is Pruned, the trunk port will not send the broadcast or flooded unicast traffic on this VLAN, except for STP, CDP, and VTP packets.