[95048] in North American Network Operators' Group
Re: Measurement data on transit traffic in IP routers?
daemon@ATHENA.MIT.EDU (Frank Coluccio)
Mon Feb 19 10:43:31 2007
From: Frank Coluccio <frank@dticonsulting.com>
To: nanog@merit.edu
Reply-To: frank@dticonsulting.com
Date: Mon, 19 Feb 2007 09:25:50 -0600
Errors-To: owner-nanog@merit.edu
>Your statement makes something of a presumption
>as to the architecture of a network. In many=20
>networks, edge aggregation devices do not
>participate in backbone routing, but simply=20
>pass the traffic they are aggregating into the core.
My first reaction, as well. However, I was reminded=20
by Andrew Odlyzko that the cable tv industry's (MSOs')
peering universe constitute a form of flattened 'edge',=20
if one were to consider the larger Internet's core=20
against the MSO community, which makes for another=20
form of interesting analysis, since much of today's
(especially more capacious) residential "broadband"
flows begin and end on MSOs' networks, and sometimes=20
never touch the larger core, fwiw. And this opens the
door to other forms of "walled garden" environments,
including intranets, some providers' CDNs, extranets,=20
and so on.
Frank A. Coluccio
DTI Consulting Inc.
212-587-8150 Office
347-526-6788 Mobile
On Sun Feb 18 10:54 , Andrew Lee sent:
>
>Hi Chris
>
>Your statement makes something of a presumption as to the architecture
>of a network. In many networks, edge aggregation devices do not
>participate in backbone routing, but simply pass the traffic they are
>aggregating into the core.
>
>One fairly well instrumented network that does have this edge/core
>collapsed model is the Internet2 network. You can find a lot of traffic
>and other data for the network at:
>http://noc.net.internet2.edu/i2network/live-network-status.html
>You should be able to extract all the info you need from there.
>
>/Andrew
>
>Chris Develder wrote, On 2/18/07 5:46 AM:
>>=20
>> Hi All,
>>=20
>> In preparation of a course, I'm looking for reference material (paper,
>> report, talk...) giving real world data on the amount of transit traffic
>> (ie. not locally dropped or added, but passing through to other
>> (backbone) routers) in a "typical" edge router of a core network, esp.
>> ratio of local vs passthrough traffic (is it 30%, 40%...?) -- I don't
>> need absolute figures, just realistic estimates of that ratio.
>>=20
>> Any help in locating such references would be highly appreciated.
>>=20
>> Kind regards,
>> Chris
>>=20
