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Win 2K Server and workstations al lgood for about hour than huge delays and DNS issues

I have a client which has a problem I can not figure out. He uses Win2K Advanced server and Win XP and Win 2000 for his workstations. When he boots up the server all connectivity works fine and has no problems for about an hour or so. Then he starts seeing huge delays connecting to the server. Sometimes1-10 minutes to view shared folders and files. he had the network on DHCP and after the hour the workstations could not connect at all. We changed the DHCP to static IPs and now it works alittle better but still problematic. When the networking is delayed he can still ping the server and all other computers and if you restart the workstations everything will work another hour or so. I am leaninf towards DNS issues. His server has DNS errors and other ones. They are event id 4126 every 30 minutes or so and event id 4000 every 30 minutes or so. Anybody have a clue or have they seen this before?
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rsvpcomp
Asked:
rsvpcomp
1 Solution
 
oBdACommented:
Yes, that's very likely DNS problems, and it's very likely that they're using an external DNS server (or one on the router) in the TCP/IP settings, or that dynamic updates aren't enabled for the AD DNS zone. The following setup is correct:

*** TCP/IP-Settings ***
* On your DC/DNS, make sure the *only* DNS listed in the TCP/IP properties is itself.
* On your domain members, enter your DC *only* as primary DNS.
* Do NOT enter your ISP's or your router's DNS server in the TCP/IP settings on any domain member. All DNS resolution needs to be done by your internal DNS server *only*.

*** DNS Server Settings ***
* Delete the root zone (if present) in your DNS servers' forward lookup zones (the single dot, "."), to enable external lookups.
* Right-click your forward and reverse lookup zones, go to Properties, and make sure that Dynamic Updates are enabled.
* In the properties page of your DNS servers, configure forwarders to point to your ISP's DNS. The forwarders section is the *only* entry in your network where your ISP's DNS should be listed.
* It's recommended (but not necessary) to set your zones to Active Directory integrated (this can be done in the properties of the zones as well).

Once you've checked this, open a command prompt on the DC and enter "ipconfig /registerdns", then stop and re-start the netlogon service. Check if the SRV records have been created (see link below).
For further troubleshooting, you can use dcdiag.exe and netdiag.exe (both support a /fix parameter to fix small problems on the fly) to check your system for errors in the domain setup.

10 DNS Errors That Will Kill Your Network
http://mcpmag.com/features/article.asp?EditorialsID=413

Frequently Asked Questions About Windows 2000 DNS and Windows Server 2003 DNS
http://support.microsoft.com/?kbid=291382

Best practices for DNS client settings in Windows 2000 Server and in Windows Server 2003
http://support.microsoft.com/?kbid=825036

Troubleshooting Common Active Directory Setup Issues in Windows 2000
http://support.microsoft.com/?kbid=260371

How to Verify the Creation of SRV Records for a Domain Controller
http://support.microsoft.com/?kbid=241515

SRV Resource Records May Not Be Created on Domain Controller
http://support.microsoft.com/?kbid=239897

How Domain Controllers Are Located in Windows
http://support.microsoft.com/?kbid=247811

How Domain Controllers Are Located in Windows XP
http://support.microsoft.com/?kbid=314861

HOW TO: Use the Network Diagnostics Tool (Netdiag.exe) in Windows 2000
http://support.microsoft.com/?kbid=321708

DCDiag and NetDiag in Windows 2000 Facilitate Domain Join and DC Creation
http://support.microsoft.com/?kbid=265706

Do not install the Support Tools from your installation CD, some tools were updates by the Service Packs. Here's the current version for W2k:
Windows 2000 SP4 Support Tools
http://www.microsoft.com/windows2000/downloads/servicepacks/SP4/supporttools.asp
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rsvpcompAuthor Commented:
I guess I am OK with that. those things worked for awhile than same thing happened. they ended up upgrading to Win 2003 Server. I think that solved everything.Those things helped me get rid of other errors though so its fine. thanks for your help.
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