Solved

DNS response times

Posted on 2013-11-27
2
349 Views
Last Modified: 2013-12-16
Is their a way to test DNS response times? We are getting certain machines who cant resolve names and it states DNS timed out.

The DNS server (165.x.x.x) that is being used for VPN is having issues again:
c:\>nslookup outlook.com
Server:  .net
Address:  165.x.x.x
 
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to server.net timed-out
0
Comment
Question by:Thomas N
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 15

Expert Comment

by:jrhelgeson
ID: 39681557
DNS is entirely dependent on packet latency, and if the DNS entry is cached on that server or not.

Incidentally - Outlook.com did have an issue late last week (Nov 22, 2013) where Microsoft knocked their name servers offline - causing a major DNS & service outage.

But to answer your question - I've used DNS Benchmark from GRC.

That tool will allow you to benchmark and compare your private DNS server with public servers, etc.

What kinds of problems are you having? Are they using your private DNS server?  If so, is your DNS server using root hints, or is it configured to just forward lookups to another DNS server.
0
 
LVL 24

Accepted Solution

by:
Sandeshdubey earned 500 total points
ID: 39683271
Have you verified the dns setting on client and dc is set correctly.See below link for the same.Best practices for DNS client settings on DC and domain members.
http://abhijitw.wordpress.com/2012/03/03/best-practices-for-dns-client-settings-on-domain-controller/

Also verify the health of DCs by dcdiag /q and repadmin /replsum and post the log if error is reported:http://blogs.technet.com/b/askds/archive/2011/03/22/what-does-dcdiag-actually-do.aspx
0

Featured Post

What is SQL Server and how does it work?

The purpose of this paper is to provide you background on SQL Server. It’s your self-study guide for learning fundamentals. It includes both the history of SQL and its technical basics. Concepts and definitions will form the solid foundation of your future DBA expertise.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A hard and fast method for reducing Active Directory Administrators members.
Had a business requirement to store the mobile number in an environmental variable. This is just a quick article on how this was done.
This tutorial will give a short introduction and overview of Backup Exec 2012 and how to navigate and perform basic functions. Click on the Backup Exec button in the upper left corner. From here, are global settings for the application such as conne…
This tutorial will walk an individual through the steps necessary to join and promote the first Windows Server 2012 domain controller into an Active Directory environment running on Windows Server 2008. Determine the location of the FSMO roles by lo…

690 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question