On Wed, 01 Oct 2003 07:15:11 +0100, The Natural Philosopher
wrote:


BTW I think you meant 10Mbps for d-i-y, not 10Gbps. 10 GBPs is probably
the total UK internet bandwidth ;-)




It's a touch more than that. ;-)

There is considerable fibre capacity under the Atlantic that was built
during the .com boom and has never been lit.

Under some London streets, especially around Docklands, there is so
much fibre, that if it ever were lit, the paving slabs would glow.



You misunderstand. I didn;t say maxiumum fiber bandwidth, I said maximum
uK internet bandwidth.

Last time I talked to the ISP's it was a couble of 100Mbps peering links
between ISP's in Telehouse etc. I think its getting to be fibers now,
but they aren't running their internationals much more than a few
hundred Mbps at the moment AFAIK.



No I knew what you meant .

The operational internet bandwidth is also considerably more than 10G
today for direct transAtlantic links, and if you count bandwidth
accessible via peerings to locations elswhere in Europe, even more
than that.

Of course the effect that an individual user might see will depend on
the destination addresses of given accesses. It will also depend on
the transit and peering agreements that the ISP has. In the earlier
days of the internet when most capacity was provided by research and
academic organisations, routes were determined predominantly on
technical "cost" and merit of the routes. Nowadays there is a
considerable commercial factor based on peering and transit agreements
that determines which routes and capacity are available to given ISPs.



..andy

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