Solved

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

Posted on 2014-09-08
4
375 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
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:
RK 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

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

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

Resolve DNS query failed errors for Exchange
This article runs through the process of deploying a single EXE application selectively to a group of user.
This tutorial will walk an individual through the process of configuring their Windows Server 2012 domain controller to synchronize its time with a trusted, external resource. Use Google, Bing, or other preferred search engine to locate trusted NTP …
This video shows how to use Hyena, from SystemTools Software, to bulk import 100 user accounts from an external text file. View in 1080p for best video quality.

831 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