On Mon, Mar 05, 2001 at 12:21:41PM -0500, Dan Debertin wrote:
> This is actually something that has always puzzled me. Why is it not
> possible to apply route filters as one can with other routing protocols?
> Cisco explains here that it isn't possible, but doesn't go into a lot of
> detail:
>
> http://www.cisco.com/warp/public/104/9.html#Q9
Link state protocols depend on every router in an area having an
identical copy of the database; once you start filtering prefixes, then
every router in an area does NOT have an identical copy of the database;
to ensure consistancy, anything you don't want to use should not be in
OSPF.
--msa
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