North American Network Operators Group

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Re: Has PSI been assigned network 1?

  • From: Dale S. Johnson
  • Date: Wed Apr 19 22:13:22 1995

> AS 690 has about as complex a set of policies as anyone I can imagine.
> RIPE-181 can handle our import policy just fine.  We've suggested some
> minor syntax changes that would substantially reduce the number of
> lines required to express this (without defining a few thousand macros
> to accomplish this), but the current syntax does provide the needed
> flexibility.  Our export policy cannot be expressed in RIPE-181
> because some of our export policy is AS path based.  An AS path
> extension has already been proposed (or at least batted around on the
> rps mailing list).

Limited AS path expressions (policy with respect to your neighbors) has
been coded and deployed, though not yet announced or generally documented.
(Let me know if you're interested in using it).  General AS path 
expressions are in the works.