EIGRP Filtering with Extended ACL

Now on R3 we will filter R6 loopback address using extended ACL.

Note: The same for R3 we should create and apply on R3 not on R1.

R3#sh ip route 150.6.6.0

Routing entry for 150.6.6.0/24

  Known via "eigrp 100", distance 90, metric 2274816, type internal

  Redistributing via eigrp 100

  Last update from 155.1.123.1 on Serial0/0, 00:06:16 ago

  Routing Descriptor Blocks:

  * 155.1.123.1, from 155.1.123.1, 00:06:16 ago, via Serial0/0

      Route metric is 2274816, traffic share count is 1

      Total delay is 24100 microseconds, minimum bandwidth is 1544 Kbit

      Reliability 255/255, minimum MTU 1500 bytes

      Loading 1/255, Hops 2

R3#sh run

access-list 100 deny   ip host 155.1.123.1 150.6.6.0 0.0.0.255

access-list 100 permit ip any any

!

R3#sh run

router eigrp 100

 network 150.3.0.0

 network 155.1.0.0

 distribute-list 100 in Serial0/0

 no auto-summary

R3#sh ip route 150.6.6.0

% Network not in table

See R3 not getting the R6 loopback address.