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Sprint BGP filters in 207.x.x.x?

  • From: Daniel Karrenberg
  • Date: Thu Dec 14 05:27:37 1995

  > Jeremy Porter <[email protected]> writes:
  > I don't really understand how a RR can help with proxy aggregation
  > seeing as the route objects really only provide origin AS
  > and regular aggregation.  

It can help in several ways:

1) If you proxy aggregate you put in a route object for the aggregate.
This infiormation can be used to track down the cause of problems
caused by proxy aggregation.

2) The route object can also contain information about "holes" in an
aggregate, which can be quite useful when evaluating aggregation

3) The routing registry also contains 'aut-num' objects describing the
routing policy of each AS: who they peer with, which routes they announce
and accept. Given this information the consequences of proxy aggragation
can be evaluated/simulated before putting a proxy aggregation in place.