If you're not familiar with how DDNS and AD work together, you may not realize just how many moving parts there are with this product (check out Understanding Dynamic Update from Technet to learn more).When one link in the chain fails, records may stop getting updated or may even get removed altogether inadvertently!Imagine if an important server's DNS A record suddenly gets changed to the wrong IP. DDNS can sometimes go on a walkabout and it's important to know where to start troubleshooting if this happens.Let's demonstrate a typical troubleshooting scenario that you may come across with DDNS.In additon, hosts can change the records and then become the owner of the record.
Combined with Active Directory (AD) it makes managing thousands of DNS records for clients and servers a breeze.
It's hard to imagine having to manually add and remove DNS records as fast as machines are constantly getting replaced in most IT organization these days.
When DDNS is working properly it's wonderful, but when it fails it can sometimes turn into a major pain to troubleshoot.
You just replaced a computer; the old computer is off the network and had held the DHCP IP address of 192.168.0.10.
You bring the new computer online and it obtains a DHCP lease for the same IP address. However, when you try to resolve the name of the new computer, the old computer's name still comes up. Here's how we'll start the troubleshooting process: 1.