?
Solved

Old IP Address being returned after shifting website to new server (and IP)

Posted on 2005-03-10
4
Medium Priority
?
173 Views
Last Modified: 2010-03-18
I currently manage a few websites in my university. One of these websites (which is NOT hosted within the university) was shifted to another server with a different IP around 6 months back.

The problem is when someone using the university provided Internet goes to the website, he/she is SOMETIMES still directed to the old IP (not always).

This problem does not occur when accessing the website from outside the university (i.e when NOT using the university LAN). The newer IP is always returned.

I checked with the network administrators thinking that the DNS cache of the internal servers might be outdated. They said that the change in IP will take sometime to propogate to all the name servers. True, but isnt 6 months long enough?!! Anyway, they were not very helpful.

What options do i have other than changing the domain name?
I'd appreciate any solutions to this problem.

Thanks!
Tejas
0
Comment
Question by:tejasxp
[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
  • 2
4 Comments
 
LVL 16

Accepted Solution

by:
robrandon earned 375 total points
ID: 13510465
When you have a machine going to the wrong IP, you need to find out where it is getting the wrong IP from.  See what DNS server it is contacting.  Also, find out if it is unqiue to specific computers or users.

When changing a public DNS entry, it can take from 24-48 hours to replicate.  You are right that this should not be going on for 6 months.  Something certainly is wrong.
0
 

Author Comment

by:tejasxp
ID: 13513857
I think its contacting the university's DNS servers. This problem is faced by all computers and users who are using the university's network resources.

Also, within the university, the IP of the website keeps switching between the old server and the new server maybe twice a day, or more.
0
 
LVL 16

Expert Comment

by:robrandon
ID: 13517941
Perhaps they have round-robin setup for that particular server.  Round-robin is when you setup more than 1 IP for a server to distribute the load.  If they are managing your DNS, they the resolution lies with them.  

Have you tried using the NSLOOKUP command to see what IP's are returned?
ex:
NSLOOKUP www.google.com 

Put your server name in of course.
0
 

Author Comment

by:tejasxp
ID: 13626609
Yep there was something wrong with the DNS server of the web hosting company.

Thanks!
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say 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

Have you ever set up your wireless router at home or in the office to find that you little pop-up bubble in the bottom right-hand corner of Windows read "IP Conflict - One of more computers on the network have been assigned the following IP address"…
The Need In an Active Directory enviroment, the PDC emulator provide time synchronization for the domain. This is important since Active Directory uses Kerberos for authentication.  By default, if the time difference between systems is off by more …
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…
In this video you will find out how to export Office 365 mailboxes using the built in eDiscovery tool. Bear in mind that although this method might be useful in some cases, using PST files as Office 365 backup is troublesome in a long run (more on t…

777 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