From: Adel Abushaev (adel@netmasterclass.net)
Date: Mon Dec 08 2003 - 20:28:04 GMT-3
Good evening,
Type 3 0.0.0.0 LSA will still be there in ospf database. All the
mechanisms to filter it out will apply between ospf
database and routeing table. In addition to the distance command,
"distribute-list in" can be used under router ospf to
filter specific prefixes.
In 12.2(15)T there is a distribute-list with route-map, where you may
specify a route-map of what to put and what to filter.
I will assume this task is "feature-understanding" practice, because
otherwise IA 0.0.0.0 is the only way to get out
of totally stubby area and should better stay there. Also, according to OSPF
RFC, the only router that can delete LSA in area
is the router that generated that LSA in area, which is in case of totally
stubby area and IA 0.0.0.0 is an ABR of a totally stubby
area.
Adel Abouchaev
CCIE# 12037, MCSE
http://www.netmasterclass.net
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