Solved

how long will it take for pc client have the update dns information

Posted on 2014-09-08
4
402 Views
Last Modified: 2014-09-23
windows server 2003 with dns server , a server ip change and the A host record change in the zone file of dns, how long will it take for a pc client know the change?
0
Comment
Question by:litmic
[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
4 Comments
 
LVL 8

Expert Comment

by:Wilder_Admin
ID: 40309349
approx 30 min to 60 min or you run ipconfig /flushdns on a startupscript.
A rebooted client should get the information right away.
0
 
LVL 21

Accepted Solution

by:
Radhakrishnan R earned 500 total points
ID: 40309400
Hi,

When the DHCP Client service registers A and PTR resource records for a computer, it uses a default caching Time to Live (TTL) of 15 minutes for host records. This determines how long other DNS servers and clients cache a computer's records when they are included in a query response. You can check this in each zone's SOA record which will hold the details (I.e - Refresh interval, retry interval, expires after..etcc).

It will get update immediately as soon as you reboot the machine.

Hope this helps.
0
 
LVL 1

Expert Comment

by:Nicola Mackin
ID: 40311707
Hi

Instead of rebooting you can open a command prompt and run:

 ipconfig /registerdns

This should refresh your DNS.

Regards
Nicola
0
 
LVL 15

Expert Comment

by:samri
ID: 40318607
This will depends on how long you pc/machine caches the dns entry for the server.
ipconfig /flushdns
- will immediately flushed all entries in your machine DNS cache.  Next query for your servername to DNS will depends on if the DNS record has changed or not.

inslookup -type=A -debug host.domain.com

from the output:
    ANSWERS:
    ->  10.10.10.10.in-addr.arpa
        name = host.domain.com
        ttl = 584 (9 mins 44 secs)

>> ttl(time to live) is how long more the record is valid.
0

Featured Post

Office 365 Training for Admins - 7 Day Trial

Learn how to provision tenants, synchronize on-premise Active Directory, implement Single Sign-On, customize Office deployment, and protect your organization with eDiscovery and DLP policies.  Only from Platform Scholar.

Question has a verified solution.

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

Suggested Solutions

This article runs through the process of deploying a single EXE application selectively to a group of user.
Recently, Microsoft released a best-practice guide for securing Active Directory. It's a whopping 300+ pages long. Those of us tasked with securing our company’s databases and systems would, ideally, have time to devote to learning the ins and outs…
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …
Are you ready to implement Active Directory best practices without reading 300+ pages? You're in luck. In this webinar hosted by Skyport Systems, you gain insight into Microsoft's latest comprehensive guide, with tips on the best and easiest way…

734 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