406
172.17.2.0/24 1 Type2 1 192.168.1.2 192.168.2.2
172.17.3.0/24 1 Type2 1 192.168.1.2 192.168.2.2
Total Nets: 4
Intra Area: 1 Inter Area: 0 ASE: 3 NSSA: 0
4. Configure filtering lists on Router B:
# Configure ACL 2002 to allow route 172.17.2.0/24 to pass.
[RouterB] acl number 2002
[RouterB-acl-basic-2002] rule permit source 172.17.2.0 0.0.0.255
[RouterB-acl-basic-2002] quit
# Configure IP prefix list prefix-a to allow route 172.17.1.0/24 to pass.
[RouterB] ip prefix-list prefix-a index 10 permit 172.17.1.0 24
5. Configure a routing policy on Router B.
[RouterB] route-policy isis2ospf permit node 10
[RouterB-route-policy-isis2ospf-10] if-match ip address prefix-list prefix-a
[RouterB-route-policy-isis2ospf-10] apply cost 100
[RouterB-route-policy-isis2ospf-10] quit
[RouterB] route-policy isis2ospf permit node 20
[RouterB-route-policy-isis2ospf-20] if-match ip address acl 2002
[RouterB-route-policy-isis2ospf-20] apply tag 20
[RouterB-route-policy-isis2ospf-20] quit
[RouterB] route-policy isis2ospf permit node 30
[RouterB-route-policy-isis2ospf-30] quit
6. Apply the routing policy to route redistribution on Router B:
# On Router B, enable route redistribution from IS-IS and apply the routing policy.
[RouterB] ospf
[RouterB-ospf-1] import-route isis 1 route-policy isis2ospf
[RouterB-ospf-1] quit
# Display OSPF routing table information on Router A.
[RouterA] display ospf routing
OSPF Process 1 with Router ID 192.168.1.1
Routing Tables
Routing for Network
Destination Cost Type NextHop AdvRouter Area
192.168.1.0/24 1 Transit 192.168.1.1 192.168.1.1 0.0.0.0
Routing for ASEs
Destination Cost Type Tag NextHop AdvRouter
172.17.1.0/24 100 Type2 1 192.168.1.2 192.168.2.2
172.17.2.0/24 1 Type2 20 192.168.1.2 192.168.2.2
172.17.3.0/24 1 Type2 1 192.168.1.2 192.168.2.2
Total Nets: 4
Intra Area: 1 Inter Area: 0 ASE: 3 NSSA: 0
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