AD Sites and Services

Luis103

What happens when all of your sites sit on one IPsite link? At my job we have multiple sites and subnets defined but all of them use the same default ip link. Can that cause replication problems or issues in the future?

It's been a while since I passed my MCSA 2012, need a refresher lol.

BornToBeMild

It's not a recommended way to do it for a couple of reasons:

Complexity - With one site link, every site has a connection to every other site. It can be more difficult to debug if you get problems.

Efficiency - Every AD change gets replicated across the network from the site where it happens to every other site individually. This means extra load on the network, and extra work for the DCs involved.

Site link design depends to some extent on your physical network, so I'll assume all sites are equally connected to all other sites. In this case a best practice approach would be to designate a "hub", usually a site with multiple DCs. Then create a site link for every other site with just that site and the hub in it. That way the heavy replication processing is done at the hub site only.

Luis103

Thanks for the response, I figured it was setup incorrectly.