I completely concur. We spread our uplinks across separate boxes and we have /29 allocations. Get the best of all worlds. But if I only had one provider, I'd want to have multiple BGP sessions for this reason.
> On Oct 17, 2016, at 08:30, Mike Hammett <na...@ics-il.net> wrote: > > It really seems like it's a grave oversight to *NOT* support multiple BGP > sessions. I drop to two routers for that same reason, I can do maintenance on > one, while the other carries traffic. > > > > > ----- > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > Midwest-IX > http://www.midwest-ix.com > > ----- Original Message ----- > > From: "Mike Poublon" <mpoub...@secantnet.net> > To: "rar" <r...@syssrc.com>, nanog@nanog.org > Sent: Thursday, October 13, 2016 2:04:29 PM > Subject: Re: Two BGP peering sessions on single Comcast Fiber Connection? > > I started a thread around the same topic back on 10/16 of 2014. A > Comcast engineer (who ultimately spoke to the national product manager) > came back after discussing and said the same thing "We don't support > that". I got a slightly longer explanation of: > > -------------------------------------------- > > In a nutshell, when we design a product we do it to accommodate the most > typical customer cases. > Given that the design includes a single fiber path and thus the fiber > path and device that terminates on either end each are a single point of > failure, adding extra BGP sessions doesn’t seem to add value in the > typical failure scenarios. In order to achieve the simplest and most > scalable solution to address the market, we rely on narrowing the > possible combinations of parameters. > > -------------------------------------------- > > I explained to them that their interpretation prevents me from being > able to do concurrent maintenance on my side (single router > reboot/upgrade, etc). Never got anywhere with it though. > > I'm still interested in having this set up, but have given up on it ever > really coming to reality. Luckily ALL of my other providers were more > than happy to set up an extra session. > > If anyone from Comcast is listening, there is customer demand for this. > It's not about making it better for Comcast, it's about allowing > customers to have more flexibility. > > Mike Poublon > > /Senior Datacenter Network Engineer/ > > *Secant Technologies* > > 6395 Technology Ave. Suite A > > Kalamazoo, MI 49009 > >> On 10/13/2016 1:48 PM, rar wrote: >> After a many month wait, we were ready to turn up our BGP peering sessions >> on a new Comcast fiber connection. >> >> With our other providers (Level 3 and Verizon) we have edge routers that >> directly connect between the provider's on premise connection and our >> primary and a backup core routers. Each core router has a multihop BGP >> session with the provider's BGP router. The goal is to keep the single BGP >> router from being a single point of failure. >> >> Comcast said they could not support two separate BGP peering sessions on the >> same circuit. Does anyone have any counter examples? We used to have this >> setup with Comcast 5+ years ago, but now they say they can't support it. >> >> >> Bob Roswell >> brosw...@syssrc.com<mailto:brosw...@syssrc.com> >> 410-771-5544 ext 4336 >> >> Computer Museum Highlights<http://museum.syssrc.com/> > >
