Question : CISCO Virtual IP? One IP, Two Servers, Three Subnets, and a funeral.

Say we have two sites (we have more really, but this makes it easier):

SiteA: 10.0.0.0/8 (legacy) and 172.16.0.0/16 (current supernet)
SiteB: 172.17.0.0/16

We have a samba server located at siteA that holds big reference files. I want to create a duplicate server at siteB to reduce the load on the link.

Is there a clever networking way to do this? We have cisco switches and routers, and windows 2003 AD integrated DNS. Windows Round Robin is a no go, as local subnet prioritizing won't work between the 10/8 and 172.16/16.

I vaguely remember there being a clever cisco proprietary method for doing this, involving mac addresses and floating IP's - something similar to CARP... but i may be mistaken

Any ideas welcome :-)

Answer : CISCO Virtual IP? One IP, Two Servers, Three Subnets, and a funeral.

Configure DFS on Windows 2003 DNS server.