[OPLINTECH] DNS Question

[Tom Casey]

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). 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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