Exchanges that matter...

Thu Dec 5 09:45:38 UTC 1996

> Alex, 
> 
> This is a very interesting statistic, and I'd like
> to understand precisely what you mean by it.  
> 
> If you'ld allow me to restate it.  Do you mean that of all 
> the traffic sourced to you from customers within the UK,
> 50% of that traffic is destined for other UK sites either 
> to your own customers or exiting out an in country exchange 
> point?
> 
> The remaining 50% of your traffic sourced within the UK
> is destined for outside of the country, and of this 50%,
> 50% of that is destined for Linx, 40% to the US, and
> 10% to Stockholm.
> 
> Is this correct?

Yes. In fact it means more than that as it works in both
directions. Traffic on our network because it is travelling
between customers of ours in the UK and hosts they are
communicating over the world, 50% is handed of at LINX,
40% in the US and 10% at Stockholm. I haven't measured
the equiv figures for customers in the US recently.
I did a "by mouth" survey for many of the reasonably
well peered people at the LINX of the above figure at
the last LINX meeting, and everyone I asked was between
30% and 50% (we've tried quite hard to get our figure
high for obvious reasons).

Given you already have a box less than 100m away from
LINX, does this mean we might see MCI routes there soon? :-)

Alex Bligh
Xara Networks

> -scott
> --
> 
> > From owner-nanog at merit.edu Wed Dec  4 16:26 EST 1996
> > X-Mailer: exmh 1.6.9 960923 (lol at xara.net)
> > To: Jim Dixon <jdd at vbc.net>
> > cc: "Alex.Bligh" <amb at xara.net>, nanog at merit.edu
> > Subject: Re: Exchanges that matter... 
> > Mime-Version: 1.0
> > Date: Wed, 04 Dec 1996 21:05:59 +0000
> > From: "Alex.Bligh" <amb at xara.net>
> > Sender: owner-nanog at merit.edu
> > Content-Type> : > text/plain> ; > charset=us-ascii> 
> > Content-Length: 723
> > 
> > > On Wed, 4 Dec 1996, Alex.Bligh wrote:
> > > 
> > > > in content and in telecoms charging) perhaps. But ridiculous telco regulation
> > > > within Europe and language differences makes a very strong case for at least
> > > > one NAP per country (we dump about 50% of our UK traffic off in the UK).
> > > 
> > > What do you do with the other 50% of your UK traffic, Alex?
> > 
> > Country wise?
> > 
> > Difficult to divide up traffic sourced in the UK from traffic sourced
> > outside teh UK just at the mo, but we send the vast majority of the
> > rest to the states. I'd guess 50% to LINX (UK), 40% to US one way
> > or another and 10% to Stockholm SE. The figures are not too easy to
> > get as we are transitting US networks back to Europe too.
> > 
> > Alex Bligh
> > Xara Networks
> > 
> > 
> > 
> > 