[OPLINTECH] DNS Question

[Bruce Landis]

Perhaps others would also be interested in which DNS name servers appear to
by slow in getting updates.  Or would that rock any boats?
 
Thanks.
 
 
Bruce Landis
Technology Specialist
Chillicothe and Ross County Public Library
 
 
-----Original Message-----
From: oplintech-bounces at oplin.org [mailto:oplintech-bounces at oplin.org]On
Behalf Of Tom Casey
Sent: Thursday, June 07, 2007 12:11 PM
To: Chad Neeper; oplintech at oplin.org
Subject: Re: [OPLINTECH] DNS Question
 
Chad:
 
Thanks for the reply. I figured this out with some help from Shawn Walsh @
NEO-RLS. I solved the problem by changing our external DNS servers from ones
which are still going to the address below to other ones which are updated
and resolving fine.
 
Thanks for the input.
 
 
Tom
 
 
  _____  

From: Chad Neeper [mailto:cneeper at level9networks.com] 
Sent: Wednesday, June 06, 2007 3:00 PM
To: oplintech at oplin.org
Subject: Re: [OPLINTECH] DNS Question
 
Tom, us.i1.yimg.com is an alias for a domain managed by Akamai Technologies
( http://en.wikipedia.org/wiki/Akamai_Technologies
<http://en.wikipedia.org/wiki/Akamai_Technologies> ). Akamai provides
content caching for global content providers such as Yahoo!.

I would guess that once your locally cached DNS entry for us.i1.yimg.com has
been cleared, it will re-resolve to another Akamai cache server (hopefully a
working one!).

Chad



-----------------------
Chad Neeper
Senior Systems Engineer
 
Level 9 Networks
740-548-8070 (voice)
866-214-6607 (fax)
 
--   Full LAN/WAN consulting services   --
-- Specialized in libraries and schools --


Tom Casey wrote: 
Greetings:
 
Having a DNS problem.  Our  DNS servers are resolving the URL of a yahoo
image server incorrectly. This is resulting in yahoo hanging and unhappy
patrons. 
 
In detail, http://us.i1.yimg.com <http://us.i1.yimg.com/>  (yahoo's chief
image server) is resolving incorrectly to 192.232.17.19 it. By using my dial
up connection I can see that it should resolve to 64.86.95.33. 
When I do a tracert command I get the following response that appends the
akamaitech.net domain to the results
 
 
C:\Documents and Settings\Administrator>tracert us.i1.yimg.com
 
Tracing route to a943.x.a.yimg.com.1ad67941.1.cn.akamaitech.net
[192.232.17.11]
over a maximum of 30 hops:
 
  1    <1 ms    <1 ms    <1 ms  10.100.0.1
  2  10.100.0.1  reports: Destination net unreachable.
 
Trace complete.
 
C:\Documents and Settings\Administrator>
 
We use Windows 2000 and 2003 servers for our DNS. We have this problem if I
use the default Windows supplied forwarders or if I remove them and manually
add ones.
 
 
Any help would be appreciated.
 
Thanks
 
 
Tom Casey
Public Library of Youngstown and Mahoning County
 
 
 





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