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North American Network Operators Group

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Re: Alternative to BGP-4 for multihoming?

  • From: Randy Bush
  • Date: Mon Mar 13 13:44:54 2000

> Inconsistent-AS.  "Ick."

an as should have a single routing policy.  that policy could be that all
prefixes beginning with odd numbers are only announced in florida and those
begining with even are only announced in stockholm.

when one is a transit customer, one gets to set one's policy as one wishes.

now peering can be a different matter.  in that case, peers tend to make
have complex requirements, e.g. some requirem that, for north american
peerings, all prefixes must be announced at all peerings and with the same
as paths.

we need to remember that there are non-trivial hosting sites which pay for
transit.

randy





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