[173222] in North American Network Operators' Group
Re: RE: Cable Company Network Upgrade
daemon@ATHENA.MIT.EDU (Toney Mareo)
Mon Jul 21 09:18:22 2014
X-Original-To: nanog@nanog.org
From: "Toney Mareo" <halflife4@gmx.com>
To: "Frank Bulk" <frnkblk@iname.com>
Date: Mon, 21 Jul 2014 15:18:12 +0200
In-Reply-To: <002201cfa3a5$c887d470$59977d50$@iname.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
Hello
Thanks for the useful tips.
=C2=A0
>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 poin=
ts of failure.
The farest node is at 94kms, the closest to the central is 11kms but they =
are just like as you said distributed right now. Not all the traffic going =
through their HQ and I want to keep it this way.=20
In this case I think 100gps routers are overkill. I just need to give them=
some recommendation for switches/routers for these edge nodes where the CM=
TS-es are located which are able to connect to 2-3 different ISPs. For now =
I recommended HP MSR50 Modular Router, but if you know any better price/cat=
egory please let me know. I think the best choice are these modular routers=
, because ISPs might have different connections at different nodes like 1Gb=
fiber, 10Gb fiber.
Also if anybody could recommend ABR (Adaptive bitrate streaming) https://e=
n.wikipedia.org/wiki/Adaptive_bitrate_streaming
equipment for this size of network, that would be great.
Thanks!
Sent:=C2=A0Sunday, July 20, 2014 at 1:04 AM
From:=C2=A0"Frank Bulk" <frnkblk@iname.com>
To:=C2=A0nanog@nanog.org
Subject:=C2=A0RE: Cable Company Network Upgrade
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 To=
ney's customer base, and possibly more if they really have a 240 Mbps offer=
ings. 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 transpo=
rt), 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 m=
ay 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 point=
s of failure.
Frank
-----Original Message-----
From: NANOG [mailto:nanog-bounces@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, an=
d
even 1% of your customer base capping out a 240Mb would take most of a 10G=
b
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.thompson@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 upgra=
de
> 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 custome=
r.
>
> 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.thompson@solutioninc.com
> Website: www.solutioninc.com[http://www.solutioninc.com] <http://www.sol=
utioninc.com/[http://www.solutioninc.com/]>
>
> SolutionInc Limited - Simplifying Internet Access
>
> SolutionInc Limited - Simplifying Internet Access With operations in mor=
e
> than 45 countries worldwide, SolutionInc is an established global leader=
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> Internet, centralized hotspot connectivity, billing and management
> solutions. SolutionInc provides software and services to the hospitality=
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> Thank you.
>
>
>
>
>
=C2=A0
