topic Re: DNS performance in Windows Server 2003

DNS performance

Nilzelio Monteiro_1 — Tue, 29 May 2007 15:49:50 GMT

Hi,
I have a WIN 2003 with a DNS client performance that is worse than a HP-UX client.
How can I improve my DNS client performance at Windows 2003 Server?

Re: DNS performance

Ivan Ferreira — Tue, 29 May 2007 17:16:27 GMT

Can you describe the problem that you have, maybe posting results of commands?

Check your DNS suffix in "My computer" properties. Also check the "Append these DNS suffixes" and "DNS suffix for this connection" in TCP/IP properties.

Re: DNS performance

Rune J. Winje — Wed, 30 May 2007 01:35:34 GMT

A useful command when troubleshooting DNS from a client's point of view is also to do the following:

ipconfig /flushdns
nslookup
set d2
www.hp.com (for example)

The "set d2" will give you detailed information about which servers the client queries - including which order and also show the suffixes it tries to append etc.

The ipconfig /flushdns is necessary to ensure the client does not use cached lookups. Be aware of the effect of caching - if the UX client has cached lookups it will be quicker when comparing to other clients that do not have cached lookups.

For further troubleshootin of your DNS servers please check out the DNSLINT utility from MS. This does a number of automated tests on your DNS servers which is both quicker and more reliable than doing it manually. See:
http://support.microsoft.com/kb/321045
and
http://support.microsoft.com/kb/329982
Produces a nice html report with yellow and red colored text for any problems found.

Cheers,
Rune

Re: DNS performance

Antony I Louis — Wed, 20 Jun 2007 07:58:09 GMT

Hi rune..

I hope yours wil be fine for this issue............ Good Keep it up.........