Solved

local DNS-Cache ?

Posted on 1999-01-14
6
238 Views
Last Modified: 2013-12-19
Hi,
is there a local DNS-cache for NT-WS? Or must the WS connect to the DNS-Server erverytime when she want to know the IP-Adress for a Hostname? (I know the function for the etc/hosts. To use this file is not the answer!)
thanks cbob
0
Comment
Question by:cbob
6 Comments
 
LVL 23

Expert Comment

by:Tim Holman
ID: 1568884
There's a NetBIOS name cache to resolve NetBIOS names to IP address (nbtstat -c).
The only other place hostnames and IP addresses are stored on NT WS is the etc\hosts file, or the WINS server on the local network, or a DNS server.
Specifying that you want to use DNS in TCP/IP properties just points you to a database of hostnames and IP addresses - it doesn't take any information off it, but once you've contacted the other machine, then this machines' hostname and IP address will be stored in nbtstat -c.

Hope this helps...

0
 

Author Comment

by:cbob
ID: 1568885
Thanks Tin,
that means there is no DNS_cache at NT Workstations (exception etc\hosts)?
0
 
LVL 4

Accepted Solution

by:
mcdonc earned 100 total points
ID: 1568886
No there is no DNS cache on NT Workstation.  TESTED:  Do a "ping" from the console of an NT workstation to a host on your local DNS domain.  Quickly make changes to the DNS entry for that host (change the host's IP address).  Immediately start pinging again, new address added by change for that hostname will be used.
0
Easy, flexible multimedia distribution & control

Coming soon!  Ideal for large-scale A/V applications, ATEN's VM3200 Modular Matrix Switch is an all-in-one solution that simplifies video wall integration. Easily customize display layouts to see what you want, how you want it in 4k.

 
LVL 23

Expert Comment

by:Tim Holman
ID: 1568887
Mcdonc,
  That's a terrible answer.  Point stealer.
Cbob,
  I'm not sure why you accepted that answer.
  Mcdonc's 'test' is not valid in all situations, as he's not taking into account name resolution by initial local broadcast, the hosts file, WINS or the lmhosts file.
 
0
 
LVL 4

Expert Comment

by:mcdonc
ID: 1568888
He wasn't talking about name resolution in general.  He was talking about DNS name resolution in specific.  In that context, the answer is right.

That said, you're right.  I'm not proud.  My apologies.
0
 

Expert Comment

by:gorndog
ID: 2922227
But TTL caching is still in effect, no?

See this PAQ, for how changes to the DNS
were not seen by my NT WS client until the
TTL expired   (in my case, one hour later.)

http://www.experts-exchange.com/jsp/qShow.jsp?ta=winntnet&qid=10423716 
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Are you one of those front-line IT Service Desk staff fielding calls, replying to emails, all-the-while working to resolve end-user technological nightmares? I am! That's why I have put together this brief overview of tools and techniques I use in o…
Resolve DNS query failed errors for Exchange
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…

790 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