Why site bridge?

[IceBall]

If you have 3 sites (SiteA-SiteB-SiteC) automaticly there will be a "transistive" bridge between SiteA and SiteC.
But why do I need the bridge? If you create a user on a DC in SiteA it will be replicated to a DC on SiteB and then from SiteB to a DC on SiteC so why/when do you need the bridge?

/IceBall



MCSE+I NT 4.0
MCSE w2k

 

[hewissa]

Hey Ice,

Break your site down further. In all Sites there are 3 DC's DCA1, DCA2, DCA3, DCB1,DCB2...for example. With out a Bridge, all DCs will replicate with those connected by the KCC or by a manual connection. So in your example Site A - DCA1 would replicate with DCB2,DCB3,DCC1. DCA2 would replicate with DCB1,DCC2,DCA1 and so on....

Using the bridge deminishes all the cross replication. DCA1, DCB1 and DCC1 are all bridgehead servers. They Replicate with each other. Then amongst those servers in their site. So domain wide, 3 DCs are replicating, Site wide, 3 dc's are replicating.

Hewissa

MCSE, CCNA, CIW