Experiences with Comcast Ethernet

Bret Clark bclark at spectraaccess.com
Tue Jan 4 19:39:40 CST 2011

> On Tue, Jan 4, 2011 at 1:05 PM, Dylan Ebner<dylan.ebner at crlmed.com>  wrote:
>> My company has about 2 dozen Comcast business cable accounts at satellite offices around the Midwest. We are looking at adding an additional ISP to the mix and we are thinking of purchasing an Ethernet circuit from Comcast in an attempt to increase performance on those connections by keeping all the traffic within Comcast's network.  Comcast, of course, has assured us this will result in "noticeable" speed increases for those accounts. I am more weary. Does anyone have any experience with Comcast's ethernet offerings? How reliable are they? Do Comcast cable connections see a significant performance improvement?
>> Dylan Ebner, Network Engineer
It will only help if the performance issues  are related to the Comcast 
Internet peering connections, otherwise you'll see no difference if the 
issues are related to congestion occurring on the coax connections from 
the optical nodes that services each coax feed through neighborhoods and 
business. This is simple over-utilization that (at least in our neck of 
the woods) is becoming more and more a problem as Comcast saturates 
there networks with too many connections...there is only so much 
bandwidth a coax line can handle! I suspect your performance issues are 
related to the latter.

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