Active Directory Communications Bandwidth Usage?
Posted on 2008-10-29
I am working at a company with 12 sites, all of them with a small but roughly equal number of users, and I'm considering implementing AD. However, before I do so, I wanted to find out what the bandwidth overhead will be across our VPN tunnels to see if this will be practical. Some key facts:
1. Only one location will have a DC and global catalog server.
2. All other locations have too few users (about 10-15) to justify adding a new DC/GC at each location.
3. All satellite locations have VPN tunnels connected to the main office at roughly 768Kbps upstream and 3Mbit downstream.
I'm interested in knowing what will happen to the main office bandwidth should 11 other locations send traffic across the tunnels for things like logins, login scripts (no drive mappings), global catalog lookups (for exchange), AD related DNS traffic, etc.