VTP Version 2

According to Cisco’s website, “Because VTP version 2 supports only one domain, it forwards VTP messages in transparent mode without inspecting the version and domain name.” This implies that it does not care about the domain name mismatch and that the vlans and updates will be forwarded.

I have not seen this to be the case. In my experience, the domain names must match for the updates to be forwarded.

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_52_se/configuration/guide/3560scg/swvtp.html#wp1035121