[180094] in North American Network Operators' Group
Re: Peering and Network Cost
daemon@ATHENA.MIT.EDU (Mark Tinka)
Thu May 21 23:03:47 2015
X-Original-To: nanog@nanog.org
To: Dave Taht <dave.taht@gmail.com>, Max Tulyev <maxtul@netassist.ua>
From: Mark Tinka <mark.tinka@seacom.mu>
Date: Fri, 22 May 2015 05:03:07 +0200
In-Reply-To: <CAA93jw7DjWUqnTp7LpmCxHyR9ibRipBO3kE85Uu-C_BLtrEZfg@mail.gmail.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
On 21/May/15 18:59, Dave Taht wrote:
> Two things I am curious about are 1) What is the measured benefit of
> moving a netflix server into your local ISP network
>
> and 2) does anyone measure "cross town latency". If we lived in a
> world where skype/voip/etc transited the local town only,
> what sort of latencies would be see within an ISP and within a
> cross-connect from, say a gfiber to a comcast?
On average, 1ms for every 100km.
We've seen this in practice - consistently - for any fibre deployed
within the same town/city.
Unless someone does something very wrong with the fibre, suffers
terrible hardware issues, deliberately implements debilitating bandwidth
management or does a piss-poor job of network design, it would be
reasonably hard to go above +/- 1ms for traffic that originates and
terminates within the same town, let alone 6 miles of speaking parties.
Mark.
