On Tue, Jan 4, 2011 at 1:05 PM, Dylan Ebner<dylan.ebner@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
This is what we worry about as well. Right now, when the complaints start coming in, we can usually trace the problem to a comcast -> level3 -> qwest issue. Our big concern is we start seeing over subscription on the nodes (we have dealt with this in the past) and our problems start all over again. Dylan Ebner, Network Engineer Consulting Radiologists, Ltd. 1221 Nicollet Mall, Minneapolis, MN 55403 ph. 612.573.2236 fax. 612.573.2250 dylan.ebner@crlmed.com www.consultingradiologists.com -----Original Message----- From: Bret Clark [mailto:bclark@spectraaccess.com] Sent: Tuesday, January 04, 2011 7:40 PM To: nanog@nanog.org Subject: Re: Experiences with Comcast Ethernet 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. Bret