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Incorrectly Named Comcast Router

Posted by
Contributor

Message 1 of 6
497 Views

Just wanted to point out to a network manager at Comcast that a router is nammed incorrectly in Portland.

 

The router at 68.86.85.106 is named pos-2-14-0-0-cr01.chicago.il.ibone.comcast.net

 

Its ping shows that this is obviously untrue.

 

This router shows on any route going from Seattle to San Jose on Comcast's network.

5 REPLIES
Posted by
Connection Expert

Message 2 of 6
491 Views

Posting a sample trace that traverses said router will provide additional data that maybe helpful.

 

Here's one from my end on the east coast to it:

 

Tracing route to pos-2-14-0-0-cr01.chicago.il.ibone.comcast.net [68.86.85.106]
over a maximum of 30 hops:

 

  1     *        *        *     Request timed out.
  2     7 ms     8 ms     8 ms  te-4-3-ur02.union.nj.panjde.comcast.net [68.86.1
92.177]
  3    10 ms    10 ms     9 ms  te-9-1-ur01.union.nj.panjde.comcast.net [68.85.3
4.153]
  4    10 ms     9 ms     7 ms  te-9-1-ur02.avenel.nj.panjde.comcast.net [68.85.
34.145]
  5    10 ms     9 ms     8 ms  te-9-3-ur01.avenel.nj.panjde.comcast.net [68.85.
34.141]
  6    10 ms    10 ms    11 ms  te-8-3-ur02.ebrunswick.nj.panjde.comcast.net [68
.86.209.225]
  7    14 ms    12 ms    12 ms  pos-0-6-0-0-cr01.newyork.ny.ibone.comcast.net [6
8.86.90.25]
  8    47 ms    51 ms    49 ms  pos-2-7-0-0-cr01.chicago.il.ibone.comcast.net [6
8.86.86.102]
  9    73 ms    73 ms    73 ms  pos-1-7-0-0-cr01.denver.co.ibone.comcast.net [68
.86.86.178]
 10   101 ms   101 ms   100 ms  pos-0-6-0-0-cr01.seattle.wa.ibone.comcast.net [6
8.86.85.230]
 11   110 ms   108 ms   108 ms  pos-2-14-0-0-cr01.chicago.il.ibone.comcast.net [
68.86.85.106]

 

Trace complete.

 

Sure does look like the rDNS/geolocation data for it is incorrect. That looks like coast to coast latency to me, and the consistency of the response times in the last two hops surely is not that of a jump from Seattle back to Chicago.

Message Edited by EG on 03-21-2010 02:20 PM



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Posted by
Contributor

Message 3 of 6
482 Views

Ya, perhaps they moved the physical router from Chicago to Portland. Can I get free DVR yet lol.

Posted by
Email Expert

Message 4 of 6
476 Views

My guess is they reassigned IPs and someone forgot to update the rDNS. These names are primarily for the benefit of Comcast network engineers, they're not a guarantee to the rest of the Internet community. If they're wrong, it's just a minor inconvenience, it doesn't affect operation (except confusing customers a little in the traceroutes).

 

We've notified the Comcast moderator, so hopefully this mistake will be corrected. 

Message Edited by Barmar on 03-21-2010 08:58 PM



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Posted by
Connection Expert

Message 5 of 6
470 Views
I believe it is indeed an IP. I don't think that a router unit has physically been moved... I believe that the OP has made a joke ?..
Message Edited by EG on 03-21-2010 11:01 PM



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Posted by
Contributor

Message 6 of 6
463 Views
You never know I like you reason more though.