Di Posting Oleh : Simple Learning
Kategori : Core Technologies EIGRP Routing
Prerequisites: CCNP level skills.
Note!
Use the configuration from the lab 52 but REMOVE 'eigrp stub' on R4.
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
Task 2
Configure R1 and R2 as EIGRP stub routers. Use default options (connected and summary).
Task 3
Keeping R1 and R2 EIGRP stub routers allow R1 to advertise 10.0.44.0/24.
Task 4
Keeping R1 and R2 EIGRP stub routers allow R2 to advertise 10.0.4.0/24.
Lab Solution
Task 1
Using the lab 52 config, remove eigrp stub command on R4.
R4 Configuration:
!
R4(config-router)#no eigrp stub
R4(config-router)#
R4(config-router)#
!
Task 2
Configure R1 and R2 as EIGRP stub routers. Use default options (connected and summary).
R1 Configuration:
!
router eigrp 1
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
eigrp stub connected summary
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
eigrp stub connected summary
!
R2 Configuration:
!
router eigrp 1
network 10.1.123.2 0.0.0.0
network 10.1.124.2 0.0.0.0
network 172.16.102.2 0.0.0.0
no auto-summary
eigrp stub connected summary
network 10.1.123.2 0.0.0.0
network 10.1.124.2 0.0.0.0
network 172.16.102.2 0.0.0.0
no auto-summary
eigrp stub connected summary
!
Verification:
Pic. 2 - R3 Routing Table.
Notice!R3 does not receive R4's prefixes because R1 and R2 filters them out (only connected and summary routes can be advertised by R1 and R2).
Task 3
Keeping R1 and R2 EIGRP stub routers allow R1 to advertise 10.0.44.0/24.
R1 Configuration:
!
ip prefix-list R4_L3 seq 5 permit 10.0.44.0/24
!
!
route-map LEAK permit 10
match ip address prefix-list R4_L3
!
match ip address prefix-list R4_L3
!
router eigrp 1
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
eigrp stub connected summary leak-map LEAK
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
eigrp stub connected summary leak-map LEAK
!
Verification:
Pic. 3 - R3's Routing Table.
Notice!R1 unsuppressed 10.0.44.0/24. It takes a moment longer to advertise the same prefix over S0/0 as it is a slow link. Also, while using 'leak-map' the defaults (connected and summary) are not added unless manually typed in.
Task 4
Keeping R1 and R2 EIGRP stub routers allow R2 to advertise 10.0.4.0/24.
R2 Configuration:
!
ip prefix-list R4_L2 seq 5 permit 10.0.4.0/24
!
!
route-map LEAK permit 10
match ip address prefix-list R4_L2
!
match ip address prefix-list R4_L2
!
router eigrp 1
network 10.1.123.2 0.0.0.0
network 10.1.124.2 0.0.0.0
network 172.16.102.2 0.0.0.0
no auto-summary
eigrp stub connected summary leak-map LEAK
network 10.1.123.2 0.0.0.0
network 10.1.124.2 0.0.0.0
network 172.16.102.2 0.0.0.0
no auto-summary
eigrp stub connected summary leak-map LEAK
!
Verification:
Pic. 4 - R3's Routing Table.
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