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.Microsoft Dynamic DNS (DDNS) is a wonderful feature.Combined with Active Directory (AD) it makes managing thousands of DNS records for clients and servers a breeze.DHCP is open and standards-based, as defined by the Internet Engineering Task Force (IETF) in their Requests for Comments () 21.(The IETF is the main standards organization for the Internet.) This chapter examines the basics of DHCP as it applies to you, the systems administrator, and how you can use it to make your life and your network better.With this configuration the DHCP server will always register a DNS record on behalf of the DHCP client whether or not that DHCP client actually requests it.In this case you will see that after the DDNS registration/update both the ‘A’ DNS record and the ‘PTR’ DNS record are owned by the user account specified as DDNS credentials in DHCP.
With this configuration Name Protection is enabled.If you are going to work with Windows Server 2003, you should expect to work with TCP/IP.One of the keys to successfully working with TCP/IP is having an understanding of the concept of TCP/IP addresses.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.Objectives Microsoft lists the following objectives for the DHCP portion of the "Implementing, Managing, and Maintaining IP Addressing" section of Exam 70-291, "Implementing, Managing, and Maintaining a Microsoft Windows Server 2003 Network Infrastructure": Manage DHCP.TCP/IP is the de facto standard for computer networking and appears to have no challengers in the networking protocol arena.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!When Name Protection is enabled, I cannot fulfill the requirements I explained at the beginning of this post.So to fulfill my requirements I need to implement [‘scenario 2’] and NOT enable Name Protection.