If your DNS servers do not support this, you would need to set up all required service records for all domain controllers manually, a potentially long and arduous process. Just to reiterate, Windows 2000 uses service records in DNS to locate domain controllers in specific domains, domain controllers in the same site, global catalog servers, key distribution centers, and more. Class specifies the DNS record class value, almost always IN for Internet. Priority specifies the priority level of the server. Clients will attempt to contact the server with the lowest priority value.
Weight is a load-balancing feature.
If multiple servers have the same priority, clients choose SRV records with higher weights. Port specifies the port number that a particular service listens on. Netlogon service can accomplish re-registration of all SRV records. You should also familiarize yourself with the different subdomains that are created beneath a domain in a Windows 2000 DNS implementation. Service records and related entries can be verified by using both the DNS MMC snap-in, as well as by querying DNS using nslookup.exe .