Re: Numerous Replication Connections per DC/GC?

Ace Fekay [MVP] wrote:

THe only thing I can think of is the subnet objects may not be totally
correct as defined per site. So when the KCC runs, it sees a server in
it's own location which is actually not defined part of the site because
the IP subnet may not be associated to the site, therefore it thinks
it's a bridgehead in the default-site-name.

As far as I can tell the subnets are correct. However that is something
the client will have to confirm. My Visio diagram shows all subnets
assigned to all sites. There is also no "Default-Site-Link" there so it
must have been deleted when all the custom site links were created.


ALso in a case where if you simply have three sites,
SiteA--SiteB--SiteC, I can possibly also see the bridges can be causing
the KCC to create a connection object the bridgehead in SiteA to SiteC
to provide a transitive connection. But not the number of connections
you've described.

ANd getting back to your previous statement:
"I also was thinking this problem could be stemming from the
"Bridge all site links" option being utilized."

If ALL sites are bridged, then it is no longer a hub and spoke design,
but rather a mesh, therefore I can see possiby why the KCC is doing
that. Use the GUI version of replmon from the Windows 2000 Support Tools
(on the CDROM). Look at the connection objects to get a better visual of
what's happening. YOu can also download a 30 day trial of Spotlight on
Active DIrectory from NetIQ (www.netiq.com) to look at it, which does a
better job.


As an FYI, I have been using both of those tools throughout this venture.
Spotlight is a wonderful tool for this type of research.

I really did not think that "Bridge All Site Links" would cause this
problem. The only way a connection would be created to another site other
than the one that the site is directly linked to would be if there was an
issue with that linked site. If so it would create a connection to the
next lowest cost site. What I did just find is that they have a domain in
the US and (for example) one in Australia. One US SAT site that has 100+
connections has a site link to a HUB site in the US with a cost of 100.
There is also a site link form that HUB site in US to a HUB site in
Australia with a cost of 10! All other US SAT sites also have a 100 cost
site link to that same US HUB. But because there is a cost of 10 assisgned
to that US to Australia site link those SAT sites would create a link to
Australia if there was an issue with the link between the US SAT and US
HUB site. I hope that wasn't confusing. If it was not...it still doesn't
tell me why that connection (from the US SAT to the Aust HUB) wasn't
deleted by KCC when the latency was fine to the US HUB.


And no problem about keeping it in the groups. I would rather do that
anyway. Many have sent me stuff that they would rather not post due to
their own security concerns.




--
-=SW=-
-MCSE 2K/2K3 CCEA-
.

Relevant Pages

  • Re: AD site replication links
    ... we need to confirm that the KCC has created the correct connection ... I have checked the replication status and it seems OK... ... The KCC generates inter-site connection objects based on your site link. ...
    (microsoft.public.windows.server.active_directory)
  • Re: replication topology
    ... site is the hub site, and all the other sites spoke of it. ... connection object for the main DC at the hub site. ... The KCC should do this. ... actual issue if you have no other WAN connections. ...
    (microsoft.public.win2000.active_directory)
  • Re: How long do GPTs take to replicate?
    ... Changing the replication interval for a site link has no bearing on whether ... or not the KCC manages connection objects. ... connection object, or manually creating one, has any bearing on how the KCC ...
    (microsoft.public.windows.server.active_directory)
  • Re: Numerous Replication Connections per DC/GC?
    ... connections and force KCC to run again. ... two 9mb connections from the main HUB site. ... At that point wouldn't you think that the "Auto site link bridging" could ...
    (microsoft.public.win2000.active_directory)
  • Re: Questions regarding replication connections
    ... you cannot associate a site link with a WAN link ... T1 and dial-up in this case should be made at network level ... have a high-speed connection such as a T1 and a dial-up link in case the ... that is set to a lower cost than the site link for the dial-up connection. ...
    (microsoft.public.windows.server.active_directory)