Di Posting Oleh : Simple Learning
Kategori : Core Technologies EIGRP Routing
Prerequisites: CCNP level skills.
Note!
Use the basic EIGRP configuration (Lab 45 Task 1) in the labs 45-53.
EIGRP filtering can use:
- Standard ACL.
- Extended ACL.
- Prefix-List.
- Route-Map.
- Administrative Distance.
- Passive-Interface.
- Offset-List.
- Stub Routing.
- Selective Stub Routing (stub routing with leak map).
Pic. 1 - Topology Diagram.
Icons designed by: Andrzej Szoblik - http://www.newo.plTask 1
Lab Solution
Task 1
Using prefix-list prevent R3 from advertising 172.16.133.0/24. Also make sure it does not learn 172.16.144.0/24.
Pic. 2 - R3's Routing Table Before Applying the Filter.
Pic. 3 - R4's Routing Table.
R3 Configuration: !
ip prefix-list EIGRP_IN seq 5 deny 172.16.144.0/24
ip prefix-list EIGRP_IN seq 10 permit 0.0.0.0/0 le 32
ip prefix-list EIGRP_IN seq 10 permit 0.0.0.0/0 le 32
!
ip prefix-list EIGRP_OUT seq 5 deny 172.16.133.0/24
ip prefix-list EIGRP_OUT seq 10 permit 0.0.0.0/0 le 32
!
ip prefix-list EIGRP_OUT seq 5 deny 172.16.133.0/24
ip prefix-list EIGRP_OUT seq 10 permit 0.0.0.0/0 le 32
!
router eigrp 1
network 10.1.13.3 0.0.0.0
network 10.1.123.3 0.0.0.0
network 172.16.103.3 0.0.0.0
network 172.16.133.3 0.0.0.0
distribute-list prefix EIGRP_OUT out
distribute-list prefix EIGRP_IN in
no auto-summary
network 10.1.13.3 0.0.0.0
network 10.1.123.3 0.0.0.0
network 172.16.103.3 0.0.0.0
network 172.16.133.3 0.0.0.0
distribute-list prefix EIGRP_OUT out
distribute-list prefix EIGRP_IN in
no auto-summary
!
Pic. 4 - R3's Routing Table After Applying Filter EIGRP_IN.
Pic. 5 - R4's Routing Table After Applying
Filter EIGRP_OUT On R3.
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