leak-map ? how does it work

From: raaki.88@gmail.com
Date: Mon Jan 05 2009 - 08:04:57 ARST


 hello everyone while labbing i got a question stating to advertise specific
routes and summaraised one ..

i knew leak-map would do the trick and happy with it .. now my question is
leak-map has 3 rules

Three rules :

If the leak-map is configured to reference a route-map that does not exist,
only the summary route is advertised and the more specific routes are
suppressed

If the leak-map is configured to reference a route-map and the route-map is
referencing an access-list that does not exist , then the summary routes and
all
the specific routes are advertised

If the leakmap is configured to reference a route-map and the route-map matches
and acl , all the permitted networks b the acl will be advertised along with
the summary route

its completely strange for me ... i cant see any logic ... for example if its
an acl it will do what ever we wanted to permit or deny

so when compared iam fine with first and last points ... straight stuff ..if
acl is there it would filter if not it would ignore ..

can any one explain me how does the point n0 2 works ?

regards
raaki

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