502
Total Nets: 4
Intra Area: 1 Inter Area: 0 ASE: 3 NSSA: 0
4. Configure filtering lists:
# Configure IPv4 basic ACL 2002 to permit route 172.17.2.0/24.
[SwitchB] acl basic 2002
[SwitchB-acl-ipv4-basic-2002] rule permit source 172.17.2.0 0.0.0.255
[SwitchB-acl-ipv4-basic-2002] quit
# Configure IP prefix list prefix-a to permit route 172.17.1.0/24.
[SwitchB] ip prefix-list prefix-a index 10 permit 172.17.1.0 24
5. Configure a routing policy.
[SwitchB] route-policy isis2ospf permit node 10
[SwitchB-route-policy-isis2ospf-10] if-match ip address prefix-list prefix-a
[SwitchB-route-policy-isis2ospf-10] apply cost 100
[SwitchB-route-policy-isis2ospf-10] quit
[SwitchB] route-policy isis2ospf permit node 20
[SwitchB-route-policy-isis2ospf-20] if-match ip address acl 2002
[SwitchB-route-policy-isis2ospf-20] apply tag 20
[SwitchB-route-policy-isis2ospf-20] quit
[SwitchB] route-policy isis2ospf permit node 30
[SwitchB-route-policy-isis2ospf-30] quit
6. Apply the routing policy to route redistribution:
# On Switch B, enable route redistribution from IS-IS to OSPF and apply the routing policy.
[SwitchB] ospf
[SwitchB-ospf-1] import-route isis 1 route-policy isis2ospf
[SwitchB-ospf-1] quit
# Display the OSPF routing table on Switch A.
[SwitchA] 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
The output shows that the cost of route 172.17.1.0/24 is 100 and the tag of route 172.17.2.0/24
is 20.
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