dhcp dynamic dns registration

Well, try these two pages:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnw2kmag01/html/DNSandActiveDirectory.asp

and

http://www.microsoft.com/windows2000/en/server/help/sag_DNS_und_DynamicUpdates.htm

Please remove all spaces in those URLs.

hope this helps

Please try these links:

http://www.ietf.org/html.charters/dhc-charter.html

http://ns.uoregon.edu/get_connected/dhcp_configure.html

http://www.dhcp.org/charter-update.html

http://support.microsoft.com/default.aspx?scid=kb;en-us;Q317590http://www.microsoft.com/technet/treeview/default.asp?url=/technet/prodtechnol/windows2000serv/reskit/tcpip/part2/tcpch06.asp

http://www.microsoft.com/windows2000/techinfo/howitworks/communications/nameadrmgmt/w2kdns.asp

http://www.microsoft.com/windows2000/en/server/help/default.asp?url=/windows2000/en/server/help/sag_DNS_pro_Topnode.htm?id=1848

http://www.microsoft.com/windows2000/en/server/help/default.asp?url=/windows2000/en/server/help/sag_DNS_imp_BestPractices.htm?id=1847

DHCP and DNS Introduction

DHCP provides centralized configuration and maintenance of IP addresses. It enables the configuration of clients from a single location. DHCP permits IP address "leases" to be dynamically assigned to workstations, eliminating the need for static IP address allocation. Servers implementing DHCP server functionality maintain pools of available IP addresses.

When a DHCP client workstation boots, it broadcasts a DHCP request asking for any DHCP server on the network to provide it with an IP address and configuration parameters. A DHCP server on the network that is authorized to configure this client will offer an IP address by sending a reply to the client. Upon receiving this offer, the client may decide to accept it or it may wait for additional offers from other servers on the network. Ultimately, the client accepts an offer and sends a request to accept the offer made by the server. The server will then send an acknowledgment with the offeredIP address and any other configuration parameters that the client might have requested.
The IP address offered to the client has an associated lease time. The lease time dictates the length of time that the IP address is valid. During the lifetimeof the lease, the client will repeatedly ask the server to renew. If the client chooses not to renew or if the client machine is shut down, the lease will eventually expire. Once the lease expires, the IP address can be recycled and given to anothermachine.

DNS is a hierarchical tree structure with a single root node. A naming authority owns each node in the tree; the owner can create any number of child nodes, each of which must have a unique name. A domain is any node and all of its descendant nodes (called subdomains). A domain name uniquely identifies a single node within a domain.

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I also found a rather interesting article on how a DHCP client sends the update to add to A record, while its DHCP server sends the update to add a different PTR (client pointer) record. It appears that it describes what is happening in your case. (I found it, of all places. on a linux site.)

An excerpt from that article:

Nowadays, both Windows 2000 clients and servers use DNS. A Windows 2000 client with a static IP address registers its name-to-address and address-to-name mappings by sending dynamic updates. One update adds the client's address (A) record and another adds the client's pointer (PTR) record. For example, a client called host.a.example with the address 10.0.0.1 would send updates to add the two records, as illustrated in Figure One.

(See article for example)

The first of these records maps host.a.example's domain name to the address 10.0.0.1. The second maps the address 10.0.0.1 to the domain name host.a.example. Both records are necessary to ensure correct forward- and reverse-mapping.

A Windows 2000 client with a dynamic IP address (running DHCP) also registers its name-to-address mapping, but by default its DHCP server registers the client's address-to-name mapping. In other words, the DHCP clientsends the update to add the A record, while its DHCP server sends the update to add the appropriate PTR record.

An administrator can also configure the DHCP server to handle sending all dynamic updates. This is meant for use with DHCP clients that lack the ability to update their own name-to-address mappings but works with Windows 2000 DHCP clients also. The server sets a special DHCP option that tells the client, "Just relax -- I'll do all the work." Then the DHCP server sends the updates to add the A and PTR records.

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