Troubleshooting Routing Policy Configuration 425
6 Apply the routing policy to route redistribution.
# Configure Switch B: apply the routing policy when redistributing routes.
[SwitchB] ospf
[SwitchB-ospf-1] import-route isis 1 route-policy isis2ospf
[SwitchB-ospf-1] quit 
# Display the OSPF routing table on Switch A. You can find the cost of route 
172.17.1.0/24 is 100, tag of route 172.17.1.0/24 is 20, and other external routes 
have no change.
[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
192.168.2.0/24 1 Type2 1 192.168.1.2 192.168.2.2
Total Nets: 5
Intra Area: 1 Inter Area: 0 ASE: 4 NSSA: 0 
Troubleshooting 
Routing Policy 
Configuration
IPv4 Routing
Information Filtering
Failure
Symptom
Filtering routing information failed, while routing protocol runs normally.
Analysis
At least one item of the IP prefix list should be configured as permit mode, and at 
least one node in the Route-policy should be configured as permit mode.
Processing procedure
1 Use the display ip ip-prefix command to display IP prefix list information.
2 Use the display route-policy command to display routing policy information.