North American Network Operators Group
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Re: route filtering in large networks

  • From: E.B. Dreger
  • Date: Thu Mar 13 11:16:02 2003 
RAS> Date: Wed, 12 Mar 2003 22:47:21 -0500
RAS> From: Richard A Steenbergen


RAS> That said, I'm sure we would all LOVE a protocol which can
RAS> dynamically supply routes for various route and packet
RAS> filter operations throughout a large network.

If it weren't so dangerous, I'd suggest a "hyperweight" that
overrides prefix length.  Hear bogons from route server, set
hyperweight high enough to override longer prefixes, and set the
next hop to null interface.

Things like this return us to separation of routing and
forwarding:  Should BGP munching and fancy route-fu be performed
on a flexible, customizable *ix box, then fed to the actual
forwarding machines?


Eddy
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