I am in the process of adding a Server 2003 DC to our existing 2000AD domain. Some info on our current config: We have three DC's, one on our main campus, and two at remote locations, connected by dedicated T1. The plan is to add a Server 2003 DC to the main campus vlan, let it run for a few days to make sure there are no issues, bring down the existing main campus DC (old hardware), bring up another Server2003 controller for the main campus, and upgrade the remote locations DC's to Server2003.
My question involves how the AD connections in Sites and Services should be configured now that there will be two DC's on the main campus vlan. Currently I have Sites setup for the main campus and the two remote locations, with the appropriate links between them. When I added the new Server2003 DC I noticed that it auto-created a link between itself and the current main campus DC, but did not create links to the two remote location DC's. Not surprising I suppose, but do I need to create them? Or is such a thing only recommended when a DC is acting as a bridgehead?