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
Change the metric on R1 to prefer the next-hop 10.1.13.3 towards 172.16.103.0/24 and the next-hop 10.1.123.3 towards 172.16.133.0/24. Do not use a route-map to accomplish this.
Pic. 2 - The Current R1's Routing Table
(before a change).
Pic. 3 - EIGRP Topology for 172.16.103.0/24 on R1.
Notice!
R2's AD equals FD through R1 (both S0/0 and S0/0). If I add the offset to the metric received from R1, R2 becomes the best path.R1 Configuration:
!
access-list 1 permit 172.16.103.0
access-list 2 permit 172.16.133.0
access-list 3 permit 172.16.133.0
access-list 3 permit 172.16.103.0
access-list 2 permit 172.16.133.0
access-list 3 permit 172.16.133.0
access-list 3 permit 172.16.103.0
!
router eigrp 1
offset-list 1 in 100 Serial0/0
offset-list 2 in 100 Serial0/1
offset-list 3 in 300 FastEthernet1/0
network 10.1.13.1 0.0.0.0
network 10.1.123.1 0.0.0.0
network 10.1.124.1 0.0.0.0
network 172.16.101.1 0.0.0.0
no auto-summary
offset-list 1 in 100 Serial0/0
offset-list 2 in 100 Serial0/1
offset-list 3 in 300 FastEthernet1/0
network 10.1.13.1 0.0.0.0
network 10.1.123.1 0.0.0.0
network 10.1.124.1 0.0.0.0
network 172.16.101.1 0.0.0.0
no auto-summary
!
The configuration accomplishes the goal.
Pic. 4 - The Current R1's Routing Table
(after a change).
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