DFS Mapping problems

  • Thread starter Thread starter Curt McNamee
  • Start date Start date
C

Curt McNamee

Hey everyone I have kind of an odd problem that I was
hopping someone could help me with. I am an
administrator of a small multi-site AD network. We have
three defined AD sites: HQ, CRG, CW. Each site is
linked to the others via a T1 connection. HQ is
connected to both CRG and CW, but CRG & CW are not
connected to each other directly. Each site has it's own
Apps DFS replicating with the other two Apps DFS roots.

My understanding of how the DFS's & sites work is that
each defined site (by IP subnet & netmask) should map to
it's own Apps DFS replica. This works most of the time,
but there are increasing instances that computers housed
on the CRG network, map to the Apps DFS at CW or HQ and
vice versa.

I was wondering if anyone had any experience with this
and could give some advice on why this is happening and
how to fix this problem.

Thanks for the help!
-Curt McNamee
(e-mail address removed)
 
My understanding of how the DFS's & sites work is that
each defined site (by IP subnet & netmask) should map to
it's own Apps DFS replica. This works most of the time,
but there are increasing instances that computers housed
on the CRG network, map to the Apps DFS at CW or HQ and
vice versa.
Click to expand...

Usually because either (or both) the subnets are misdefined in
sites and services OR some of the servers are in the "wrong" site.

With only three sites you should be able to post your S&S subnet
definitions for each and doublecheck your servers are in each
correctly (right click/move is easy enough if not.)

Many people check the DCs and don't worry about "other servers"
until the DFS (which is the only service besides AD that currently
respects sites -- ok, it's really the FRS.)
 
Here's the posting of my sites and subnets from "AD Sites
& Services):
Site: HQ
Subnet: 159.189.217.0/25
IP Range: 159.189.217.1 - .127
Netmask: 255.255.255.128

Site: CRG
Subnet: 159.189.216.0/24
IP Range: 159.189.216.1 - .254
Subnet: 255.255.255.0

Site: CW
Subnet: 159.189.217.128/26
IP Range: 159.189.217.129 - .192
Subnet: 255.255.255.192

The only servers in each site are the DCs we have at each
location. Should the servers the Apps replicas are
housed on be in the sites as well?

Thanks for the help!
-Curt
 
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