does Clients running microsoft windows nt in a microsoft windows 2000 network support dynamic dns updates

Anonymous User 11/21/2004 7:28:37 PM

Windows 2000 includes support for dynamic updates to DNS as described in RFC 2136. Every time there is an address event (new address or renewal), the DHCP client sends option 81 and its fully qualified name to the DHCP server, and requests the DHCP server to register a DNS pointer resource record PTR RR on its behalf. The dynamic update client handles the A RR registration on its own. This is done because only the client knows which IP addresses on the host map to that name. The DHCP server may not be able to properly do the A RR registration because it has incomplete knowledge. However, the DHCP server can be configured to instruct the client to allow the server to register both records with the DNS. Registry parameters associated with the dynamic update DNS client are documented in Appendix A.
The Windows 2000 DHCP server handles option 81 requests as specified in the draft RFC10 . If a Windows 2000 DHCP client talks to a down-level DHCP server that does not handle option 81, it registers a PTR RR on its own. The Windows 2000 DNS server is capable of handling dynamic updates.
Could give me some insight why this information will not work with subnetted network, where the correct reverse lookup PTR zone has been created and does not dynamically create the a ptr rr for the client/host registered with dhcp,dns.

Alan St Marthe 8/14/2001 9:34:22 AM

I wanted question some information in one of your earlier articles. (Dynamic DNS Updates in Windows 2000 article information provided below) In the article the author states that the RR recods are dynamicly updated by win2k pro clients. I a technet and the knowledge base videos Microsoft states that Win98 and Win2k clients can both dynamicly update only the A resource record. If you need the PTR updated dynamicly you the information must come from a Win2k DHCP server. Is the info in have read and watched from MS incorrect or is your article?


Thank you,

Micheal Blethen, MCSE

InstantDoc ID: 7187
Source: Web Exclusive, September 13, 1999
Dept: Windows 2000 Ready
Author: - Zubair Ahmad

RRs consist of A (Address) records, which contain a mapping from a Fully Qualified Domain Name (FQDN) to an IP address, and PTR (Pointer) records, which contain the mapping from an IP address to a FQDN. Although all versions of Win2K clients automatically benefit from dynamic DNS updates, Windows clients (Windows NT, Windows 9.x) take advantage of dynamic updates only if a Win2K DHCP server is available to service them.

Micheal Blethen 11/16/1999 3:58:16 PM