Thanks for sharing Ben, that's 450 kbps/sub at peak times! We see numbers in our network closer to 300 kbps per subscriber.
Assuming peak usage levels of 450 kbs/sub, that would be 15.75 Gbps for Toney's customer base, and possibly more if they really have a 240 Mbps offerings. But if there are 20 locations then it's an average of 787.5 Mbps per location. If each site had a 10 Gbps interface (with 1 or 2 Gbps of transport), then the core location should peer/buy transit with at least two ISPs over four 10G interfaces. That way if one ISP/interface falls away there's still sufficient capacity. We weren't told the geographical disparity of these 20 locations, but it may be wiser for each location to peer/buy transit to two or more disparate POPs rather than home them to one core location which has more single points of failure. Frank -----Original Message----- From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Ben Hatton Sent: Friday, July 18, 2014 7:51 PM To: nanog@nanog.org Subject: Re: Cable Company Network Upgrade I don't think there are any 'budget' routers that would move the amount of data you are looking at trying to do. 35k subs @ 240Mb is 8.4Tb/s at 100% utilization, even at a somewhat high 100:1 oversubsctiption you are looking at over 80Gb/s While our DOCSIS network is only 4000 subs, we peak at around 1.8gb/s on 10Mb packages, while oversubscription can increase with higher speed packages, as many users would never use that much bandwidth, some will, and even 1% of your customer base capping out a 240Mb would take most of a 10Gb pipe, and you still would have 34000 other subs to handle. I can't see offering 240Mb service to over 35k subs on anything less than a 100g core, and even that would be pushing it. Ben Hatton Network Engineer Haefele TV On Fri, Jul 18, 2014 at 2:33 PM, Chris R. Thompson < chris.thomp...@solutioninc.com> wrote: > I think you oversubscribed... 10,000 to 1 seems a bit steep. > > > > > > On 07/18/2014 06:42 AM, Toney Mareo wrote: > > > > > Hello, > > > I working on a plan about improving/upgrading a Euro-DOCSIS3 based > cable network with the following requirements (very briefly): > > > -20 CMTS-es on different locations needs to be connected to the > network > All of these locations currently connecting to the internet > through 1Gbit/s link through a single internet provider, I have to upgrade > them to be able to connect to at least 2 but ideally 3 ISPs at the same > time and use their links for failover (do bgp peering as well). > > What type of *budget* routers would you recommend to use for this > purpose if cisco is not an option (the company doesn't want to buy cisco > equipment)? If you can please give me exact model numbers. > > The company has over 35K customers at the moment which use various > cable modems on different areas (docsis1-3). In the future this network has > to be able to provide, max 240Mb download/30 Mb upload speed per customer. > > I also have to give them a proposal about what type of docsis3 > cable modems should they buy in the future. > And in addition they need some ABR video streaming solution. > > I know it's a very brief statement and I left out a lot details, > so any hw suggestions are more than welcome. > > Have a nice day folks! > > > > > -- > > > Christopher Thompson | Client Care | SolutionInc Limited > Office: +1.902.420-0077 | Fax: +1.902.420.0233 > > Email: chris.thomp...@solutioninc.com > Website: www.solutioninc.com <http://www.solutioninc.com/> > > SolutionInc Limited - Simplifying Internet Access > > SolutionInc Limited - Simplifying Internet Access With operations in more > than 45 countries worldwide, SolutionInc is an established global leader in > Internet, centralized hotspot connectivity, billing and management > solutions. SolutionInc provides software and services to the hospitality and > telecommunications industries through its award-winning, patented > technology software products: SolutionIP(tm) and SolutionIP(tm) Enterprise. > Through 700,000+ touch points, SolutionIP(tm) allows people to easily and > securely connect to the Internet from locations such as hotel rooms, > convention > centres, universities, restaurants and airports. Patent Information < > http://www.solutioninc.com/patents/> > > If you have received this e-mail in error, please notify me immediately at 902 > 420 0077 or reply by e-mail to the sender and destroy the original > communication. > > Thank you. > > > > >
