From: Andy Canizares (ccie@jzr.com)
Date: Sat Jan 17 2004 - 00:01:56 GMT-3
If you have 4 EIGRP routers
R1-----R2----------R3
\
\----------R4
The connection between R2, R3 and R4 is a multipoint frame relay. R1 and
R2 are on an Ethernet segment.
R3 is advertising the following networks on Loopback interfaces
-130.130.1.0/24
-130.130.2.0/24
-116.16.40.0/24
R4 is advertising the following networks on Loopback interfaces
-140.140.1.0/24
-140.140.2.0/24
-116.16.40.0/24
On R2 your asked to filter out the following routes so they are not
advertised to R1
-130.130.2.0/24
-116.16.40.0/24 (from R3 only)*this is the problem!
I've tried using distribute lists with the prefix/gateway options
(ex. A.protocol filter
distribute-list prefix filter_116 gateway R3_gateway in
distribute-list prefix filter_1301302 gateway R4_gateway in
or B. Interface Filter
distribute-list prefix filter_116 gateway R3_gateway in s1/0.1
distribute-list prefix filter_1301302 gateway R4_gateway in
s1/0.1)
Thinking that I could match the route and the gateway it was coming
from. However I would have to configure 2 distribute-lists. When I
configure a second one for the protocol or interface it over writes the
first.
Can this be done, if so how?
Tia,
Andy
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