Lab 2: Configuring Single Area OSPF Within Service Provider
Lab 2: Configuring Single Area OSPF Within Service Provider
Task 1: Configuration of IP Addresses with Service Provider
The following configuration needs to be configured
IP addressing for all nodes including Physical and Software Interfaces.
| Device | Hostname | Operating system | Interface | IP Address & Mask |
|---|---|---|---|---|
| Provider Edge 1 | PE1 | IOS | 10.0.23.2/24 | |
| Loopback 1 | 10.0.23.2/24 | |||
| Provider 1 | P1 | IOS-XR | GigabitEthernet 0/0/0/2 | 10.0.23.3/24 |
| GigabitEthernet 0/0/0/3 | 10.0.34.3/24 | |||
| Loopback 1 | 3.3.3.3/32 | |||
| Route Reflector 1 | RR1 | IOS-XR | GigabitEthernet 0/0/0/3 | 10.0.34.4/24 |
| GigabitEthernet 0/0/0/2 | 10.0.45.4/24 | |||
| Loopback 1 | 4.4.4.4/32 | |||
| Provider 2 | P2 | IOS | Ethernet 0/2 | 10.0.45.5/24 |
| Ethernet 0/3 | 10.0.56.5/24 | |||
| Loopback 1 | 5.5.5.5/32 | |||
| Provider Edge 2 | PE2 | IOS-XR | GigabitEthernet 0/0/0/4 | |
| Loopback 1 | Area 0 |
Task 2: Verify IP Addresses Configured within the Service Provider.
PE1#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Ethernet0/0 unassigned YES unset administratively down down
Ethernet0/1 unassigned YES unset administratively down down
Ethernet0/2 10.0.23.2 YES manual up up
Ethernet0/3 unassigned YES unset administratively down down
Loopback1 2.2.2.2 YES manual up up
RP/0/0/CPU0:P1#show ipv4 interface brief Interface IP-Address Status Protocol Vrf-Name Loopback1 3.3.3.3 Up Up default MgmtEth0/0/CPU0/0 unassigned Shutdown Down default GigabitEthernet0/0/0/0 unassigned Shutdown Down default GigabitEthernet0/0/0/1 unassigned Shutdown Down default GigabitEthernet0/0/0/2 10.0.23.3 Up Up default GigabitEthernet0/0/0/3 10.0.34.3 Up Up default GigabitEthernet0/0/0/4 unassigned Shutdown Down default
RP/0/0/CPU0:RR1#show ipv4 interface brief
Interface IP-Address Status Protocol Vrf-Name
Loopback1 4.4.4.4 Up Up default
MgmtEth0/0/CPU0/0 unassigned Shutdown Down default
GigabitEthernet0/0/0/0 unassigned Shutdown Down default
GigabitEthernet0/0/0/1 unassigned Shutdown Down default
GigabitEthernet0/0/0/2 10.0.45.4 Up Up default
GigabitEthernet0/0/0/3 10.0.34.4 Up Up default
GigabitEthernet0/0/0/4 unassigned Shutdown Down default
P2#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Ethernet0/0 unassigned YES NVRAM administratively down down
Ethernet0/1 unassigned YES NVRAM administratively down down
Ethernet0/2 10.0.45.5 YES NVRAM up up
Ethernet0/3 10.0.56.5 YES NVRAM up up
Loopback1 5.5.5.5 YES NVRAM up up
RP/0/0/CPU0:PE2#show ipv4 interface brief
Interface IP-Address Status Protocol Vrf-Name
Loopback1 6.6.6.6 Up Up default
MgmtEth0/0/CPU0/0 unassigned Shutdown Down default
GigabitEthernet0/0/0/0 unassigned Shutdown Down default
GigabitEthernet0/0/0/1 unassigned Shutdown Down default
GigabitEthernet0/0/0/2 unassigned Shutdown Down default
GigabitEthernet0/0/0/3 10.0.56.6 Up Up default
GigabitEthernet0/0/0/4 unassigned Shutdown Down default
Task 3: Configure OSPF within AS 3
Use the following parameters to configure OSPF within the Service Provider
| Device | OSPF Process | Interface | Area |
|---|---|---|---|
| Provider Edge 1 | 1 | Ethernet 0/2 | Area 0 |
| 1 | Loopback 1 | Area 0 | |
| Provider 1 | 1 | GigabitEthernet 0/0/0/2 | Area 0 |
| 1 | GigabitEthernet 0/0/0/3 | Area 0 | |
| 1 | Loopback 1 | Area 0 | |
| Route Reflector 1 | 1 | GigabitEthernet 0/0/0/3 | Area 0 |
| 1 | GigabitEthernet 0/0/0/2 | Area 0 | |
| 1 | Loopback 1 | Area 0 | |
| Provider 2 | 1 | Ethernet 0/2 | Area 0 |
| 1 | Ethernet 0/3 | Area 0 | |
| 1 | Loopback 1 | Area 0 | |
| Provider Edge 2 | 1 | GigabitEthernet 0/0/0/4 | Area 0 |
| 1 | Ethernet 0/3 | Area 0 |
PE1:
PE1#configure terminal
PE1(config)#router ospf 1
PE1(config-router)#interface loopback 1
PE1(config-if)#ip ospf 1 area 0
PE1(config)#interface Ethernet 0/2
PE1(config-if)#ip ospf 1 area 0
PE1(config-if)#end
PE1#write memory
P1::
RP/0/0/CPU0:P1#configure
RP/0/0/CPU0:P1(config)#router ospf 1
RP/0/0/CPU0:P1(config-ospf)#area 0
RP/0/0/CPU0:P1(config-ospf-ar)#interface g0/0/0/2
RP/0/0/CPU0:P1(config-ospf-ar-if)#interface g0/0/0/3
RP/0/0/CPU0:P1(config-ospf-ar-if)#interface loopback 1
RP/0/0/CPU0:P1(config-ospf-ar-if)#commit
RP/0/0/CPU0:P1(config-ospf-ar-if)#end
RR1:
RP/0/0/CPU0:RR1#configure
RP/0/0/CPU0:RR1(config)#router ospf 1
RP/0/0/CPU0:RR1(config-ospf)#area 0
RP/0/0/CPU0:RR1(config-ospf-ar)#interface loopback1
RP/0/0/CPU0:RR1(config-ospf-ar-if)#interface g0/0/0/2
RP/0/0/CPU0:RR1(config-ospf-ar-if)#interface g0/0/0/3
RP/0/0/CPU0:RR1(config-ospf-ar-if)#commit
RP/0/0/CPU0:RR1(config-ospf-ar-if)#end
P2:
P2#configure terminal
P2(config)#router ospf 1
P2(config)#interface loopback 1
P2(config-if)#ip ospf 1 area 0
P2(config)#interface Ethernet 0/2
P2(config-if)#ip ospf 1 area 0
P2(config-if)#interface Ethernet 0/3
P2(config-if)#ip ospf 1 area 0
P2(config-if)#end
P2#write memory
PE2:
RP/0/0/CPU0:PE2#configure
RP/0/0/CPU0:PE2(config)#router ospf 1
RP/0/0/CPU0:PE2(config-ospf)#area 0
RP/0/0/CPU0:PE2(config-ospf-ar)#interface loopback 1
RP/0/0/CPU0:PE2(config-ospf-ar)#interface gigabitEthernet 0/0/0/3
RP/0/0/CPU0:PE2(config-ospf-ar-if)#commit
RP/0/0/CPU0:PE2(config-ospf-ar-if)#end
Task 4: Verify OSPF Routes.
Verify all routes within the routing table of all Provider devices.
PE1#show ip route ospf
O 3.3.3.3 [110/2] via 10.0.23.3, 00:33:15, Ethernet 0/3
O 4.4.4.4 [110/3] via 10.0.23.3, 00:32:07, Ethernet 0/3
O 5.5.5.5 [110/4] via 10.0.23.3, 00:29:17, Ethernet 0/3
O 10.0.34.0/24 [110/2] via 10.0.23.3, 00:31:09, Ethernet 0/3
O 10.0.45.0/24 [110/3] via 10.0.23.3, 00:32:07, Ethernet 0/3
O 10.0.56.0/24 [110/4] via 10.0.23.3, 00:29:17, Ethernet 0/3
RP/0/0/CPU0:RR1#show route ipv4 unicast ospf O 2.2.2.2/32 [110/3] via 10.0.34.3, 00:35:35, GigabitEthernet0/0/0/3 O 3.3.3.3/32 [110/2] via 10.0.34.3, 00:35:35, GigabitEthernet0/0/0/3 O 5.5.5.5/32 [110/2] via 10.0.45.5, 00:32:41, GigabitEthernet0/0/0/2 O 6.6.6.6/32 [110/3] via 10.0.45.5, 00:30:03, GigabitEthernet0/0/0/2 O 10.0.23.0/24 [110/2] via 10.0.34.3, 00:35:35, GigabitEthernet0/0/0/3 O 10.0.56.0/24 [110/2] via 10.0.45.5, 00:32:41, GigabitEthernet0/0/0/2
RP/0/0/CPU0:P1#show route ipv4 unicast ospf
O 2.2.2.2/32 [110/2] via 10.0.23.2, 00:35:52, GigabitEthernet0/0/0/2
O 4.4.4.4/32 [110/2] via 10.0.34.4, 00:34:45, GigabitEthernet0/0/0/3
O 5.5.5.5/32 [110/3] via 10.0.34.4, 00:31:50, GigabitEthernet0/0/0/3
O 6.6.6.6/32 [110/4] via 10.0.34.4, 00:29:12, GigabitEthernet0/0/0/3
O 10.0.45.0/24 [110/2] via 10.0.34.4, 00:34:45, GigabitEthernet0/0/0/3
O 10.0.56.0/24 [110/3] via 10.0.34.4, 00:31:50, GigabitEthernet0/0/0/3
P2#show ip route ospf
O 2.2.2.2 [110/4] via 10.0.45.4, 00:34:24, Ethernet 0/2
O 3.3.3.3 [110/3] via 10.0.45.4, 00:34:24, Ethernet 0/2
O 4.4.4.4 [110/2] via 10.0.45.4, 00:34:24, Ethernet 0/2
O 6.6.6.6 [110/2] via 10.0.56.6, 00:31:51, Ethernet 0/3
O 10.0.23.0/24 [110/3] via 10.0.45.4, 00:34:24, Ethernet 0/2
O 10.0.34.0/24 [110/2] via 10.0.45.4, 00:34:24, Ethernet 0/2
RP/0/0/CPU0:PE2#show route ipv4 unicast ospf O 2.2.2.2/32 [110/5] via 10.0.56.5, 00:34:50, GigabitEthernet0/0/0/3 O 3.3.3.3/32 [110/4] via 10.0.56.5, 00:34:50, GigabitEthernet0/0/0/3 O 4.4.4.4/32 [110/3] via 10.0.56.5, 00:34:50, GigabitEthernet0/0/0/3 O 5.5.5.5/32 [110/2] via 10.0.56.5, 00:34:50, GigabitEthernet0/0/0/3 O 10.0.23.0/24 [110/4] via 10.0.56.5, 00:34:50, GigabitEthernet0/0/0/3 O 10.0.34.0/24 [110/3] via 10.0.56.5, 00:34:50, GigabitEthernet0/0/0/3 O 10.0.45.0/24 [110/2] via 10.0.56.5, 00:34:50, GigabitEthernet0/0/0/3
Task 5: Verify OSPF Neighborship.
PE1#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
3.3.3.3 1 FULL/BDR 00:00:33 10.0.23.3 Ethernet0/2
RP/0/0/CPU0:P1#show ospf neighbor Neighbor ID Pri State Dead Time Address Interface 2.2.2.2 1 FULL/DR 00:00:36 10.0.23.2 GigabitEthernet0/0/0/2 4.4.4.4 1 FULL/DR 00:00:36 10.0.34.4 GigabitEthernet0/0/0/3
RP/0/0/CPU0:RR1#show ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
5.5.5.5 1 FULL/DR 00:00:34 10.0.45.5 GigabitEthernet0/0/0/2
3.3.3.3 1 FULL/DR 00:00:38 10.0.34.3 GigabitEthernet0/0/0/3
PE1#show ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
6.6.6.6 1 FULL/BDR 00:00:33 10.0.56.6 Ethernet0/3
4.4.4.4 1 FULL/BDR 00:00:36 10.0.45.4 Ethernet0/2
RP/0/0/CPU0:P1#show ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
5.5.5.5 1 FULL/BDR 00:00:36 10.0.56.6 GigabitEthernet0/0/0/3
Task 6: Verify OSPF Interfaces.
PE1#show ip ospf interface brief
Interface PID Area IP Address/Mask Cost State Nbrs F/C
Lo1 1 0 2.2.2.2/32 1 LOOP 0/0
Et0/2 1 0 10.0.23.2/24 10 DR 1/1
RP/0/0/CPU0:RR1#show ospf interface brief
Interfaces for OSPF 1
Interface PID Area IP Address/Mask Cost State Nbrs F/C
Lo1 1 0 4.4.4.4/32 1 LOOP 0/0
Gi0/0/0/2 1 0 10.0.45.5/24 1 BDR 1/1
Gi0/0/0/3 1 0 10.0.34.4/24 1 DR 1/1
P2#show ip ospf interface brief
Interface PID Area IP Address/Mask Cost State Nbrs F/C
Lo1 1 0 5.5.5.5/32 1 LOOP 0/0
Et0/3 1 0 10.0.56.5/24 10 BDR 1/1
Et0/2 1 0 10.0.45.5/24 10 DR 1/1
RP/0/0/CPU0:PE2#show ospf interface brief
Interfaces for OSPF 1
Interface PID Area IP Address/Mask Cost State Nbrs F/C
Lo1 1 0 6.6.6.6/32 1 LOOP 0/0
Gi0/0/0/3 1 0 10.0.56.6/24 1 DR 1/1