OcNOS-SP : Layer 3 Guide : Layer 3 Unicast Configuration Guide : Policy Based Routing Configuration : IPv4 Configurations for PBR
IPv4 Configurations for PBR
R1
 
R1#configure terminal
Enter configure mode.
R1(config)#feature pbr
Enable PBR support
R1(config)#hardware-profile filter ingress- ipv4-ext enable
Enable Ingress IPv4 group extended for PBR support
R1(config)#ip access-list 123
Create ip access-list named 123
R1(config-ip-acl)#10 permit any 101.1.1.0/24 201.1.1.0/24
Create an access rule to permit IP packets with source 101.1.1.0/24 and destination 201.1.1.0/24
R1(config-ip-acl)#commit
Commit the candidate configuration to the running configuration.
R1(config-ip-acl)#exit
Exit access-list mode
R1(config)#route-map 123 permit 10
Configure route-map with name 123 and sequence number 10
R1(config-route-map)#match ip address 123
Match ip address with ACL 123
R1(config-route-map)#set ip next-hop 13.1.1.2
Set next-hop to forward the matching IP packets
R1(config-route-map)#commit
Commit the candidate configuration to the running configuration.
R1(config-route-map)#exit
Exit route-map mode
R1(config)#interface lo
Enter interface mode.
R1(config-if)#ip address 1.1.1.1/32
Configure the IP address of the interface.
R1(config-if)#exit
Exit interface mode.
R1(config)#interface eth1
Enter interface mode.
R1(config-if)#ip address 2.1.1.1/24
Configure the IP address of the interface.
R1(config)#interface eth2
Enter interface mode.
R1(config-if)#ip address 6.1.1.1/24
Configure the IP address of the interface.
R1(config-if)#ip ospf cost 2
Configuring ospf cost as 2
R1(config)#interface eth3
Enter interface mode.
R1(config-if)#ip address 13.1.1.1/24
Configure the IP address of the interface.
R1(config-if)#ip ospf cost 3
Configuring ospf cost as 3
R1(config)#interface eth4
Enter interface mode.
R1(config-if)#ip address 101.1.1.2/24
Configure the IP address of the interface.
R1(config-if)#ip policy route-map 123
Attach PBR on the ingress interface
R1(config-if)#exit
Exit interface mode.
R1(config)#router ospf 1
Set the routing process ID .
R1(config-router)# ospf router-id 1.1.1.1
Configure OSPF router-id
R1(config-router)#network 1.1.1.1/32 area 0.0.0.0
Configure OSPF network in area 0
R1(config-router)# network 2.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R1(config-router)#network 6.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R1(config-router)#network 13.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R1(config-router)#network 101.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R1(config-router)#commit
Commit the candidate configuration to the running configuration.
R1(config-router)#exit
Exit router mode.
R2
 
R2#configure terminal
Enter configure mode.
R2(config)#interface lo
Enter interface mode.
R2(config-if)#ip address 2.2.2.2/32
Configure the IP address of the interface.
R2(config-if)#exit
Exit interface mode.
R2(config)#interface eth1
Enter interface mode.
R2(config-if)#ip address 2.1.1.2/24
Configure the IP address of the interface.
R2(config-if)#exit
Exit interface mode.
R2(config)#interface eth2
Enter interface mode.
R2(config-if)#ip address 10.1.1.1/24
Configure the IP address of the interface.
R2(config-if)#exit
Exit interface mode.
R2(config)#router ospf 1
Set the routing process ID .
R2(config-router)# ospf router-id 2.2.2.2
Configure OSPF router-id
R2(config-router)#network 2.2.2.2/32 area 0.0.0.0
Configure OSPF network in area 0
R2(config-router)# network 2.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R2(config-router)#network 10.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R2(config-router)#commit
Commit the candidate configuration to the running configuration.
R2(config-router)#exit
Exit router mode.
R3
 
R3#configure terminal
Enter configure mode.
R3(config)#interface lo
Enter interface mode.
R3(config-if)#ip address 3.3.3.3/32
Configure the IP address of the interface.
R3(config-if)#exit
Exit interface mode.
R3(config)#interface eth1
Enter interface mode.
R3(config-if)#ip address 6.1.1.2/24
Configure the IP address of the interface.
R3(config-if)#exit
Exit interface mode.
R3(config)#interface eth2
Enter interface mode.
R3(config-if)#ip address 12.1.1.1/24
Configure the IP address of the interface.
R3(config-if)#exit
Exit interface mode.
R3(config)#router ospf 1
Set the routing process ID .
R3(config-router)# ospf router-id 3.3.3.3
Configure OSPF router-id
R3(config-router)#network 3.3.3.3/32 area 0.0.0.0
Configure OSPF network in area 0
R3(config-router)# network 6.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R3(config-router)#network 12.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R3(config-router)#commit
Commit the candidate configuration to the running configuration.
R3(config-router)#exit
Exit router mode.
R4
 
R4#configure terminal
Enter configure mode.
R4(config)#interface lo
Enter interface mode.
R4(config-if)#ip address 4.4.4.4/32
Configure the IP address of the interface.
R4(config-if)#exit
Exit interface mode.
R4(config)#interface eth1
Enter interface mode.
R4(config-if)#ip address 13.1.1.2/24
Configure the IP address of the interface.
R4(config-if)#exit
Exit interface mode.
R4(config)#interface eth2
Enter interface mode.
R4(config-if)#ip address 15.1.1.1/24
Configure the IP address of the interface.
R4(config-if)#exit
Exit interface mode.
R4(config)#router ospf 1
Set the routing process ID .
R4(config-router)# ospf router-id 4.4.4.4
Configure OSPF router-id
R4(config-router)#network 4.4.4.4/32 area 0.0.0.0
Configure OSPF network in area 0
R4(config-router)# network 13.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R4(config-router)#network 15.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R4(config-router)#commit
Commit the candidate configuration to the running configuration.
R4(config-router)#exit
Exit router mode.
R5
 
R5#configure terminal
Enter configure mode.
R5(config)#interface lo
Enter interface mode.
R5(config-if)#ip address 5.5.5.5/32
Configure the IP address of the interface.
R5(config-if)#exit
Exit interface mode.
R5(config)#interface eth1
Enter interface mode.
R5(config-if)#ip address 10.1.1.2/24
Configure the IP address of the interface.
R4(config-if)#exit
Exit interface mode.
R5(config)#interface eth2
Enter interface mode.
R5(config-if)#ip address 12.1.1.1/24
Configure the IP address of the interface.
R5(config-if)#exit
Exit interface mode.
R5(config)#interface eth3
Enter interface mode.
R5(config-if)#ip address 15.1.1.2/24
Configure the IP address of the interface.
R5(config-if)#exit
Exit interface mode.
R5(config)#interface eth4
Enter interface mode.
R5(config-if)#ip address 202.1.1.2/24
Configure the IP address of the interface.
R5(config-if)#exit
Exit interface mode.
R5(config)#router ospf 1
Set the routing process ID .
R5(config-router)# ospf router-id 5.5.5.5
Configure OSPF router-id
R5(config-router)#network 5.5.5.5/32 area 0.0.0.0
Configure OSPF network in area 0
R5(config-router)# network 10.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R5(config-router)# network 12.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R5(config-router)#network 15.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R5(config-router)#network 202.1.1.0/24 area 0.0.0.0
Configure OSPF network in area 0
R5(config-router)#commit
Commit the candidate configuration to the running configuration.
R5(config-router)#exit
Exit router mode.
Validation
R1
R1#show run aclmgr
ip access-list 123
10 permit any 101.1.1.0/24 201.1.1.0/24
R1#show run interface eth4
!
interface eth4
ip address 101.1.1.2/24
ip policy route-map 123
!
R1#
R1#show route-map 123
route-map 123, permit, sequence 10
Match clauses:
ip address: 123
Set clauses:
ip next-hop 13.1.1.2
R1#
R1#show ip policy
Interface Route-map Status VRF-Name
eth4 123 Active default
 
R1#
R1#clear route-map 123 pbr-statistics
R1#show route-map 123 pbr-statistics
 
Route-map 123, family IP
IP PBR Count: 1
VRF-name: default
Sequence 10, permit
Policy routing matches: 38764427 packets
Current action in HW: Route
Last modified date: 10/16/2023