The Great Exchange
Tom Perrine
tep at SDSC.EDU
Wed May 27 18:24:33 UTC 1998
>>>>> The moving finger of Perry E Metzger, having written:
Perry> "Pickett, David" writes:
>> 1) More needs to be done to leverage locality of traffic
Perry> In the long run, why are we assuming there will be locality of
Perry> traffic?
Perry> It is true that the old PSTN has locality of traffic, but it doesn't
Perry> have flat rate pricing, or the usage patterns that the Internet has. I
Perry> argue that users are rarely more likely to be trying to download a web
Perry> page from near to their homes than from far away. If there is
Perry> locality, it is probably weak, and in the long run would only account
Perry> for a fraction of the traffic.
Perry> Perry
As to how much of the traffic is local, about half of the people I
know at least check email from home. Some are "weekend and evening
telecommuters", making quite extensive use of "local connectivity".
How this compares to the generic web surfing, I can't say. The CAIDA
and NLANR folks say that http traffic is the most significant portion
of today's Internet.
Perhaps someone who is actually running a local exchange can report on
how much traffic they are carrying that is now not being sent to a
MAE-equivalent? I think that actual experience and hard data will
surprise us all.
--tep
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