I know there is some more overhead with using TCP over UDP but how much exactly? I ask because we are switching Kerberos requests from UDP to TCP on our Windows Server 2003 Domain Controllers and this came up because the traffic is going through a VPN tunnel that we suspect are fragmenting UDP traffic already (no proof)
Server 2008 already comes with this reg change switching UDP to TCP by dfeault. So I would assume increased traffic/fragmentation will have no affect.
What do you guy's/Gals think?