The Great Exchange
Sean Donelan
SEAN at SDG.DRA.COM
Thu May 28 04:40:49 UTC 1998
I feel a major rathole opening up, but when has that stopped me...
This seems logical, this seems to make sense. And then we have
the hub-and-spoke model brought about by airline deregulation and
FEDEX. There you have an entire industries built out of moving
people and goods from end points to central sorting facilities
and then back out to their destinations. Think of O'Hare as a
the MAE-East of the FAA.AIRNET.
Yes, I know there are no 'pure' examples. Even FEDEX tries to
intercept local packages before they get on the planes, and route
them via local trucks. Like most things, there isn't a 'pure'
answer. It is efficient to have a few (we can argue over the
number, 3 NAPs seems to small for today's Internet) hubs. But
it is also efficient to try to intercept local traffic, and handle
it locally (local exchange, caching, etc).
Of course, living in the St. Louis TWA hub city, you may understand
why I don't always think letting a single carrier domainant a hub
is a great idea.
>In large metro areas, or any place with a large *number* of ISPs,
>there will be advantages to local interconnects. Period. Even if
>there is distance-insensitive pricing for their connection to a
>MAE-thing, I would think that they would rather save that precious
>bandwidth for traffic that really needs to go to the MAE-thing. It
>could reduce their need to buy a bigger pipe to that major
>interconnect, just to carry that local traffic "up-and-back".
--
Sean Donelan, Data Research Associates, Inc, St. Louis, MO
Affiliation given for identification not representation
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