[Dshield] Cogent / Level 3

John Hardin jhardin at crsretail.com
Fri Oct 7 19:08:47 GMT 2005


Brian Dessent said:
> John Hardin wrote:
>
>> >From the discussion I've seen (i.e. L3 and Cogent customers *cannot
>> communicate at all*) it sounds like L3 is dropping traffic from Cogent's
>> netblocks at their boundaries.
>
> No, they're not dropping or blocking the traffic.  There is simply no
> route from A to B.

...

> So herein lies the problem.  Level3 determined that for whatever reason
> its peering arrangement with Cogent was no longer mutually beneficial
> and terminated the link.  Because neither organization buys full
> transit, there is no route between them.

That makes it clear, thanks.

-- 
John Hardin
Development and Technology group (Seattle)
CRS Retail Systems, Inc.
3400 188th Street SW, Suite 185
Lynnwood, WA 98037
voice: (425) 672-1304
  fax: (425) 672-0192
email: jhardin at crsretail.com
  web: http://www.crsretail.com
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