Expiring Today—Celebrate National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

DNS Cache

Posted on 2011-02-22
7
Medium Priority
?
439 Views
Last Modified: 2012-06-27
If you have 3 DNS entries and the top two fail, how long will it take for the top address to be tried again? Is there a way to adjust this besides rebooting?

Thanks
0
Comment
Question by:progjm
[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
  • 3
  • 3
7 Comments
 
LVL 20

Expert Comment

by:woolnoir
ID: 34953690
in windows 7 ?
0
 
LVL 1

Author Comment

by:progjm
ID: 34953707
Yes
0
 
LVL 20

Expert Comment

by:woolnoir
ID: 34953756
I believe that from windows xp service pack 2 and onwards there is a timeout method. If a primary server doesnt respond it is marked as 'dead' for 15 minutes during which time the secondary is consulted. After the 15 minutes it tries the primary again. This can be adjusted with a reg change - i can find it if you want, ive never had the need to change.
0
Are You Ready for GDPR?

With the GDPR deadline set for May 25, 2018, many organizations are ill-prepared due to uncertainty about the criteria for compliance. According to a recent WatchGuard survey, a staggering 37% of respondents don't even know if their organization needs to comply with GDPR. Do you?

 
LVL 1

Author Comment

by:progjm
ID: 34953784
I was trying to find it also and couldn't, probably just blind lol
0
 
LVL 1

Expert Comment

by:Medfly
ID: 34953832
Are you are talking about the local DNS cache?.. if you execute IPCONFIG /flushdns from a command prompt, it will purge the local DNS cache and force the client to obtain a fresh address from the DNS server.  The time the DNS entry will remain in the local DNS cache is set by the TTL value which is set at the DNS server.

To see all the entries in the local DNS cache you can type IPCONFIG /displaydns from a command prompt.  Then ... if you just want to check a specific entry... use the IP or URL from the list that you want to test.

Here is a link to some additional info that may address your question further:
http://www.helpwithwindows.com/WindowsXP/tune-24.html
0
 
LVL 1

Author Comment

by:progjm
ID: 34953921
flushdns didnt work, only rebooting or disabling the network interface. It did however start using the first address after some time but I am trying to find out what that time is. The addresses are statically assigned and dont recieve any data from /displaydns. I appreciate the link, good info to try there
0
 
LVL 20

Accepted Solution

by:
woolnoir earned 2000 total points
ID: 34953952
ProgJM i think this is the value you need

http://support.microsoft.com/kb/320760/en-us

its for XP, but AFAIK it works on windows 7 too.
0

Featured Post

NFR key for Veeam Agent for Linux

Veeam is happy to provide a free NFR license for one year.  It allows for the non‑production use and valid for five workstations and two servers. Veeam Agent for Linux is a simple backup tool for your Linux installations, both on‑premises and in the public cloud.

Question has a verified solution.

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

When you try to extract and to view the contents of a Microsoft Update Standalone Package (MSU) for Windows Vista, you cannot extract the files from the MSU. Here we are going to explain how to extract those hotfix details without using any third pa…
There are many software programs on offer that will claim to magically speed up your computer. The best advice I can give you is to avoid them like the plague, because they will often cause far more problems than they solve. Try some of these "do it…
In this Micro Tutorial viewers will learn how to use Boot Corrector from Paragon Rescue Kit Free to identify and fix the boot problems of Windows 7/8/2012R2 etc. As an example is used Windows 2012R2 which lost its active partition flag (often happen…
The viewer will learn how to successfully create a multiboot device using the SARDU utility on Windows 7. Start the SARDU utility: Change the image directory to wherever you store your ISOs, this will prevent you from having 2 copies of an ISO wit…

718 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