In MPLS Layer 3 the service provider will participate in routing with the customers. The customers will run static, OSPF, EIGRP, BGP, or any other routing protocol with the service provider; these routes can be shared with other sites of the customers.
In VPN routing information from one customer is completely separated from other customers and tunneled over the service provider MPLS network.
we have already discussed what is MPLS? how MPLS work? and What is MPLS L3 VPN ? in this section we see how to configure MPLS L3 VPN supports OSPF sites. Before we start our configuration you must familiar with these topics.
1. Introduction of MPLS
2. What is MPLS Label distributing protocol (LDP)? How LDP works?
3. how to configure MPLS LDP Peering?
4. What is MPLS L3 VPN? How to configure?
5. How to configure MPLS L3 VPN with RIPv2?
6. How to configure MPLS L3 VPN with EIGRP?
7. How to configure MPLS L3 VPN with OSPF?
8. What are OSPF Sham Links? how to configure OSPF Sham Links?
9. How to configure MPLS L3 with BGP AS OVERRIDE?
10. What Is Network Tunneling And How To Configure Generic Routing Encapsulation (GRE) Tunnels?
11. What Is DMVPN (Dynamic Multipoint VPN), NHRP, MGRE, And How To Configure DMVPN Phase 1?
15. What Is IPSec (Internet Protocol Security)? What Is Internet Key Exchange IKE? How To Configure IPSec Tunnel?
16. What Is IKE (Internet Key Exchange)? How To Configure IPSec Site-To-Site?
What do we need to know before applying this configuration?
- we need to assign a separate process ID because it required each VRF that receives VPN routes via OSPF from CE. in our topology we are running OSPF for multiple VRF and also running OSPF inside our core network. its need to distinguished which routes belong to which VRF and which interface belong to which OSPF process. in simple word use separate process ID.
- When it comes to redistributing OSPF into BGP by Default only OSPF inter-area and inter-area routes are redistributed into BGP. We need to use the EXTERNAL key with the redistribute command under BGP to redistribute OSPF external routes into BGP. in simple words use external keywords.
Let see the configuration to get a better understanding:-
Topology:
Goal:
- configure the topology as per the diagram
- assign the IP addresses to their interfaces
- configure IGP (OSPF 1) inside MPLS SP core
- configure MPLS LDP on router 1_2_3
- configure labels (99-199_200-299_300-399)
- configure VRF A-1 on router 1 and VRF A-2 on router 3
- configure RD and RT value 500:1 on both the sites
- configure on router 1 assign FastEthernet facing CE under VRF A-1
- configure on router 3 assign FastEthernet facing CE under VRF A-2
- Configure the loopbacks with an exact mask to exchange the routes
- configure OSPF 1 on both CE routers
- configure OSPF 11 on PE router 1 under VRF A-1 and OSPF 13 on PE router 3 under VRF A-2
- make sure PE and CE routers can ping
- configure VPNv4 peering between PE routers.
- Configure redistribution on PE routers between OSPF and BGP under VRF.
- make sure both the CEs routers are able to ping.
R1(config)#Interface fastethernet 0/0
R1(config-if)#Ip address 10.1.1.1 255.0.0.0
R1(config-if)#No shutdown
R1(config-if)# keepalive
R1(config-if)#Exit
R1(config)#Interface serial 4/0
R1(config-if)#Ip address 1.1.1.1 255.0.0.0
R1(config-if)#No shutdown
R1(config-if)#Exit
R1(config)#Interface serial 4/2
R1(config-if)#Ip address 3.3.3.2 255.0.0.0
R1(config-if)#No shutdown
R1(config-if)#Exit
R1(config)#Interface loopback 0
R1(config-if)#Ip address 192.168.10.1 255.255.255.0
R1(config-if)#Exit
R1(config)#Interface loopback 1
R1(config-if)#Ip address 192.168.11.1 255.255.255.0
R1(config-if)#Exit
R1(config)#Interface loopback 2
R1(config-if)#Ip address 192.168.12.1 255.255.255.0
R1(config-if)#Exit
R1(config)#Interface loopback 3
R1(config-if)#Ip address 192.168.13.1 255.255.255.0
R1(config-if)#Exit
R2(config)#Interface fastethernet 0/0
R2(config-if)#Ip address 20.1.1.1 255.0.0.0
R2(config-if)#No shutdown
R2(config-if)#keepalive
R2(config-if)#Exit
R2(config)#Interface serial 4/0
R2(config-if)#Ip address 1.1.1.2 255.0.0.0
R2(config-if)#No shutdown
R2(config-if)#Exit
R2(config)#Interface serial 4/1
R2(config-if)#Ip address 2.2.2.1 255.0.0.0
R2(config-if)#No shutdown
R2(config-if)#Exit
R2(config)#Interface loopback 0
R2(config-if)#Ip address 192.168.20.1 255.255.255.0
R2(config-if)#Exit
R2(config)#Interface loopback 1
R2(config-if)#Ip address 192.168.21.1 255.255.255.0
R2(config-if)#Exit
R2(config)#Interface loopback 2
R2(config-if)#Ip address 192.168.22.1 255.255.255.0
R2(config-if)#Exit
R2(config)#Interface loopback 3
R2(config-if)#Ip address 192.168.23.1 255.255
R3(config)#Interface fastethernet 0/0
R3(config-if)#Ip address 30.1.1.1 255.0.0.0
R3(config-if)#No shutdown
R3(config-if)# keepalive
R3(config-if)#Exit
R3(config)#Interface serial 4/1
R3(config-if)#Ip address 2.2.2.2 255.0.0.0
R3(config-if)#No shutdown
R3(config-if)#Exit
R3(config)#Interface serial 4/2
R3(config-if)#Ip address 3.3.3.1 255.0.0.0
R3(config-if)#No shutdown
R3(config-if)#Exit
R3(config)#Interface loopback 0
R3(config-if)#Ip address 192.168.30.1 255.255.255.0
R3(config-if)#Exit
R3(config)#
R3(config)#Interface loopback 1
R3(config-if)#Ip address 192.168.31.1 255.255.255.0
R3(config-if)#Exit
R3(config)#Interface loopback 2
R3(config-if)#Ip address 192.168.32.1 255.255.255.0
R3(config-if)#Exit
R3(config)#Interface loopback 3
R3(config-if)#Ip address 192.168.33.1 255.255.
R3(config-if)#Exit
R4(config)#interface fastEthernet 0/0
R4(config-if)#ip address 30.1.1.2 255.0.0.0
R4(config-if)#no shutdown
R4(config-if)#exit
R4(config)#interface loopback 0
R4(config-if)#ip address 192.168.40.1 255.255.255.0
R4(config-if)#exit
R5(config)#Interface fastethernet 0/0
R5(config-if)#Ip address 10.1.1.2 255.0.0.0
R5(config-if)#shutdown
R5(config-if)#Exit
R5(config)#Interface loopback 0
R5(config-if)#Ip address 192.168.50.1 255.255.255.0
R5(config-if)#Exit
R1#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 10.1.1.1 YES manual up up
Serial4/0 1.1.1.1 YES manual up up
Serial4/2 3.3.3.2 YES manual up up
Loopback0 192.168.10.1 YES manual up up
Loopback1 192.168.11.1 YES manual up up
Loopback2 192.168.12.1 YES manual up up
Loopback3 192.168.13.1 YES manual up up
R1#show run | section vrf
ip vrf A-1
rd 500:1
route-target export 500:1
route-target import 500:1
ip vrf forwarding A-1
R1#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 10.1.1.1 YES manual up up
Serial4/0 1.1.1.1 YES manual up up
Serial4/2 3.3.3.2 YES manual up up
Loopback0 192.168.10.1 YES manual up up
Loopback1 192.168.11.1 YES manual up up
Loopback2 192.168.12.1 YES manual up up
Loopback3 192.168.13.1 YES manual up up
R2#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 20.1.1.1 YES manual up up
Serial4/0 1.1.1.2 YES manual up up
Serial4/1 2.2.2.1 YES manual up up
Loopback0 192.168.20.1 YES manual up up
Loopback1 192.168.21.1 YES manual up up
Loopback2 192.168.22.1 YES manual up up
Loopback3 192.168.23.1 YES manual up up
R3#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 30.1.1.1 YES manual up up
Serial4/1 2.2.2.2 YES manual up up
Serial4/2 3.3.3.1 YES manual up up
Loopback0 192.168.30.1 YES manual up up
Loopback1 192.168.31.1 YES manual up up
Loopback2 192.168.32.1 YES manual up up
Loopback3 192.168.33.1 YES manual up up
R4#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 10.1.1.2 YES manual up up
Loopback0 192.168.40.1 YES manual up up
R5#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 30.1.1.2 YES manual up up
Loopback0 192.168.50.1 YES manual up up
R1(config)#router ospf 1
R1(config-router)#network 1.0.0.0 0.255.255.255 area 0
R1(config-router)#network 3.0.0.0 0.255.255.255 area 0
R1(config-router)#network 192.168.10.0 255.0.0.0 area 0
R1(config-router)#network 192.168.11.0 255.0.0.0 area 0
R1(config-router)#network 192.168.12.0 255.0.0.0 area 0
R1(config-router)#network 192.168.13.0 255.0.0.0 area 0
R1(config-router)#end
R2(config)#router ospf 1
R2(config-router)#network 20.0.0.0 0.255.255.255 area 0
R2(config-router)#network 1.0.0.0 0.255.255.255 area 0
R2(config-router)#network 2.0.0.0 0.255.255.255 area 0
R2(config-router)#network 192.168.20.0 255.0.0.0 area 0
R2(config-router)#network 192.168.21.0 255.0.0.0 area 0
R2(config-router)#network 192.168.22.0 255.0.0.0 area 0
R2(config-router)#network 192.168.23.0 255.0.0.0 area 0
R2(config-router)#end
R3(config)#router ospf 1
R3(config-router)#network 2.0.0.0 0.255.255.255 area 0
R3(config-router)#network 3.0.0.0 0.255.255.255 area 0
R3(config-router)#network 192.168.30.0 255.0.0.0 area 0
R3(config-router)#network 192.168.31.0 255.0.0.0 area 0
R3(config-router)#network 192.168.32.0 255.0.0.0 area 0
R3(config-router)#network 192.168.33.0 255.0.0.0 area 0
R3(config-router)#end
R1#show ip route ospf
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
O 2.0.0.0/8 [110/128] via 3.3.3.1, 01:14:38, Serial4/2
[110/128] via 1.1.1.2, 01:14:38, Serial4/0
O 20.0.0.0/8 [110/65] via 1.1.1.2, 01:14:38, Serial4/0
192.168.20.0/32 is subnetted, 1 subnets
O 192.168.20.1 [110/65] via 1.1.1.2, 01:14:38, Serial4/0
192.168.21.0/32 is subnetted, 1 subnets
O 192.168.21.1 [110/65] via 1.1.1.2, 01:14:38, Serial4/0
192.168.22.0/32 is subnetted, 1 subnets
O 192.168.22.1 [110/65] via 1.1.1.2, 01:14:38, Serial4/0
192.168.23.0/32 is subnetted, 1 subnets
O 192.168.23.1 [110/65] via 1.1.1.2, 01:14:38, Serial4/0
O 192.168.30.0/24 [110/65] via 3.3.3.1, 01:14:38, Serial4/2
192.168.31.0/32 is subnetted, 1 subnets
O 192.168.31.1 [110/65] via 3.3.3.1, 01:14:38, Serial4/2
192.168.32.0/32 is subnetted, 1 subnets
O 192.168.32.1 [110/65] via 3.3.3.1, 01:14:38, Serial4/2
192.168.33.0/32 is subnetted, 1 subnets
O 192.168.33.1 [110/65] via 3.3.3.1, 01:14:38, Serial4/2
R3#show ip route ospf
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
O 1.0.0.0/8 [110/128] via 3.3.3.2, 01:18:05, Serial4/2
[110/128] via 2.2.2.1, 01:18:05, Serial4/1
O 20.0.0.0/8 [110/65] via 2.2.2.1, 01:18:05, Serial4/1
O 192.168.10.0/24 [110/65] via 3.3.3.2, 01:18:05, Serial4/2
192.168.11.0/32 is subnetted, 1 subnets
O 192.168.11.1 [110/65] via 3.3.3.2, 01:18:05, Serial4/2
192.168.12.0/32 is subnetted, 1 subnets
O 192.168.12.1 [110/65] via 3.3.3.2, 01:18:05, Serial4/2
192.168.13.0/32 is subnetted, 1 subnets
O 192.168.13.1 [110/65] via 3.3.3.2, 01:18:05, Serial4/2
192.168.20.0/32 is subnetted, 1 subnets
O 192.168.20.1 [110/65] via 2.2.2.1, 01:18:05, Serial4/1
192.168.21.0/32 is subnetted, 1 subnets
O 192.168.21.1 [110/65] via 2.2.2.1, 01:18:05, Serial4/1
192.168.22.0/32 is subnetted, 1 subnets
O 192.168.22.1 [110/65] via 2.2.2.1, 01:18:05, Serial4/1
192.168.23.0/32 is subnetted, 1 subnets
O 192.168.23.1 [110/65] via 2.2.2.1, 01:18:05, Serial4/1
R1(config)#mpls label protocol ldp
R1(config)#mpls label range 99 199
R1(config)#mpls ldp router-id loopback 0
R1(config)#exit
R1(config)#interface serial 4/0
R1(config-if)#mpls ip
R1(config-if)#exit
R1(config)#interface serial 4/2
R1(config-if)#mpls ip
R1(config-if)#exit
R2(config)#mpls label protocol ldp
R2(config)#mpls label range 200 299
R2(config)#mpls ldp router-id loopback 0
R2(config)#exit
R2(config)#interface serial 4/0
R2(config-if)#mpls ip
R2(config-if)#exit
R2(config)#interface serial 4/1
R2(config-if)#mpls ip
R2(config-if)#exit
R3(config)#mpls label protocol ldp
R3(config)#mpls label range 300 399
R3(config)#mpls ldp router-id loopback 0
R3(config)#exit
R3(config)#interface serial 4/1
R3(config-if)#mpls ip
R3(config-if)#exit
R3(config)#interface serial 4/2
R3(config-if)#mpls ip
R3(config-if)#exit
R1#show mpls ldp neighbor
Peer LDP Ident: 192.168.20.1:0; Local LDP Ident 192.168.10.1:0
TCP connection: 192.168.20.1.41723 - 192.168.10.1.646
State: Oper; Msgs sent/rcvd: 190/188; Downstream
Up time: 02:23:12
LDP discovery sources:
Serial4/0, Src IP addr: 1.1.1.2
Addresses bound to peer LDP Ident:
20.1.1.1 1.1.1.2 2.2.2.1 192.168.20.1
192.168.21.1 192.168.22.1 192.168.23.1
Peer LDP Ident: 192.168.30.1:0; Local LDP Ident 192.168.10.1:0
TCP connection: 192.168.30.1.27403 - 192.168.10.1.646
State: Oper; Msgs sent/rcvd: 186/184; Downstream
Up time: 02:20:31
LDP discovery sources:
Serial4/2, Src IP addr: 3.3.3.1
Addresses bound to peer LDP Ident:
2.2.2.2 3.3.3.1 192.168.30.1 192.168.31.1
192.168.32.1 192.168.33.1
R1(config)#mpls label range 99 199
R1(config)#mpls ldp router-id loopback 0
R1(config)#exit
R1(config)#interface serial 4/0
R1(config-if)#mpls ip
R1(config-if)#exit
R1(config)#interface serial 4/2
R1(config-if)#mpls ip
R1(config-if)#exit
R2(config)#mpls label protocol ldp
R2(config)#mpls label range 200 299
R2(config)#mpls ldp router-id loopback 0
R2(config)#exit
R2(config)#interface serial 4/0
R2(config-if)#mpls ip
R2(config-if)#exit
R2(config)#interface serial 4/1
R2(config-if)#mpls ip
R2(config-if)#exit
R3(config)#mpls label protocol ldp
R3(config)#mpls label range 300 399
R3(config)#mpls ldp router-id loopback 0
R3(config)#exit
R3(config)#interface serial 4/1
R3(config-if)#mpls ip
R3(config-if)#exit
R3(config)#interface serial 4/2
R3(config-if)#mpls ip
R3(config-if)#exit
R1#show mpls ldp neighbor
Peer LDP Ident: 192.168.20.1:0; Local LDP Ident 192.168.10.1:0
TCP connection: 192.168.20.1.41723 - 192.168.10.1.646
State: Oper; Msgs sent/rcvd: 190/188; Downstream
Up time: 02:23:12
LDP discovery sources:
Serial4/0, Src IP addr: 1.1.1.2
Addresses bound to peer LDP Ident:
20.1.1.1 1.1.1.2 2.2.2.1 192.168.20.1
192.168.21.1 192.168.22.1 192.168.23.1
Peer LDP Ident: 192.168.30.1:0; Local LDP Ident 192.168.10.1:0
TCP connection: 192.168.30.1.27403 - 192.168.10.1.646
State: Oper; Msgs sent/rcvd: 186/184; Downstream
Up time: 02:20:31
LDP discovery sources:
Serial4/2, Src IP addr: 3.3.3.1
Addresses bound to peer LDP Ident:
2.2.2.2 3.3.3.1 192.168.30.1 192.168.31.1
192.168.32.1 192.168.33.1
R2#show mpls ldp neighbor
Peer LDP Ident: 192.168.10.1:0; Local LDP Ident 192.168.20.1:0
TCP connection: 192.168.10.1.646 - 192.168.20.1.41723
State: Oper; Msgs sent/rcvd: 189/192; Downstream
Up time: 02:24:22
LDP discovery sources:
Serial4/0, Src IP addr: 1.1.1.1
Addresses bound to peer LDP Ident:
1.1.1.1 3.3.3.2 192.168.10.1 192.168.11.1
192.168.12.1 192.168.13.1
Peer LDP Ident: 192.168.30.1:0; Local LDP Ident 192.168.20.1:0
TCP connection: 192.168.30.1.64637 - 192.168.20.1.646
State: Oper; Msgs sent/rcvd: 187/189; Downstream
Up time: 02:22:00
LDP discovery sources:
Serial4/1, Src IP addr: 2.2.2.2
Addresses bound to peer LDP Ident:
2.2.2.2 3.3.3.1 192.168.30.1 192.168.31.1
192.168.32.1 192.168.33.1
R3#show mpls ldp neighbor
Peer LDP Ident: 192.168.20.1:0; Local LDP Ident 192.168.30.1:0
TCP connection: 192.168.20.1.646 - 192.168.30.1.64637
State: Oper; Msgs sent/rcvd: 190/188; Downstream
Up time: 02:22:52
LDP discovery sources:
Serial4/1, Src IP addr: 2.2.2.1
Addresses bound to peer LDP Ident:
20.1.1.1 1.1.1.2 2.2.2.1 192.168.20.1
192.168.21.1 192.168.22.1 192.168.23.1
Peer LDP Ident: 192.168.10.1:0; Local LDP Ident 192.168.30.1:0
TCP connection: 192.168.10.1.646 - 192.168.30.1.27403
State: Oper; Msgs sent/rcvd: 187/189; Downstream
Up time: 02:22:33
LDP discovery sources:
Serial4/2, Src IP addr: 3.3.3.2
Addresses bound to peer LDP Ident:
1.1.1.1 3.3.3.2 192.168.10.1 192.168.11.1
192.168.12.1 192.168.13.1
R(config)#ip vrf A-1
R1(config-vrf)#rd 500:1
R1(config-vrf)#route-target import 500:1
R1(config-vrf)#route-target export 500:1
R1(config-vrf)#exit
R3(config)#ip vrf A-2
R3(config-vrf)#rd 500:1
R3(config-vrf)#route-target both 500:1
R3(config-vrf)#exit
R1(config)#interface fastethernet 0/0
R1(config-if)#ip vrf forwarding A-1
% Interface FastEthernet0/0 IPv4 disabled and address(es) removed due to enabling VRF A-1
R1(config-if)#ip address 10.1.1.1 255.0.0.0
R1(config-if)#no shutdown
R1(config-if)#exit
R3(config)#interface fastethernet 0/0
R3(config-if)#ip vrf forwarding A-2
% Interface FastEthernet0/0 IPv4 disabled and address(es) removed due to enabling VRF A-2
R3(config-if)#ip address 30.1.1.1 255.0.0.0
R3(config-if)#exit
R1#show run | section vrf
ip vrf A-1
rd 500:1
route-target export 500:1
route-target import 500:1
ip vrf forwarding A-1
R3#show run | section vrf
ip vrf A-2
rd 500:1
route-target export 500:1
route-target import 500:1
ip vrf forwarding A-2
R1(config)#interface loopback 0
R1(config-if)# ip ospf network point-to-point
R1(config-if)#end
R1(config-if)# ip ospf network point-to-point
R1(config-if)#end
R3(config)#interface loopback 0
R3(config-if)# ip ospf network point-to-point
R3(config-if)#end
R3(config-if)# ip ospf network point-to-point
R3(config-if)#end
R4(config)#router ospf 1
R4(config-router)#network 192.168.40.0 255.0.0.0 area 0
R4(config-router)#network 10.0.0.0 0.255.255.255 area 0
R4(config-router)#end
R1(config)#router ospf 11 vrf A-1
R1(config-router)#network 10.0.0.0 0.255.255.255 area 0
R1(config-router)#exit
*Mar 20 00:18:20.379: %OSPF-5-ADJCHG: Process 11, Nbr 192.168.40.1 on FastEthernet0/0 from LOADING to FULL, Loading Done
R1#show ip ospf 1 neighbor
Neighbor ID Pri State Dead Time Address Interface
192.168.33.1 0 FULL/ - 00:00:33 3.3.3.1 Serial4/2
192.168.23.1 0 FULL/ - 00:00:38 1.1.1.2 Serial4/0
R1#show ip ospf 11 neighbor
Neighbor ID Pri State Dead Time Address Interface
192.168.40.1 1 FULL/DR 00:00:33 10.1.1.2 FastEthernet0/0
R1#show ip route vrf A-1 ospf
Routing Table: A-1
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
192.168.40.0/32 is subnetted, 1 subnets
O 192.168.40.1 [110/2] via 10.1.1.2, 00:01:43, FastEthernet0/0
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.40.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/46/100 ms
R5(config)#router ospf 1
R5(config-router)#network 192.168.50.0 255.0.0.0 area 0
R5(config-router)#network 30.0.0.0 0.255.255.255 area 0
R5(config-router)#end
R3(config)#router ospf 13 vrf A-2
R3(config-router)#network 30.0.0.0 0.255.255.255 area 0
R3(config-router)#end
*Mar 20 00:28:16.623: %OSPF-5-ADJCHG: Process 13, Nbr 192.168.50.1 on FastEthernet0/0 from LOADING to FULL, Loading Done
R3#show ip ospf 13 neighbor
Neighbor ID Pri State Dead Time Address Interface
192.168.50.1 1 FULL/DR 00:00:33 30.1.1.2 FastEthernet0/0
R3#show ip route vrf A-2 ospf
Routing Table: A-2
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
192.168.50.0/32 is subnetted, 1 subnets
O 192.168.50.1 [110/2] via 30.1.1.2, 00:01:24, FastEthernet0/0
R1(config)#router bgp 6500
R1(config-router)#no bgp default ipv4-unicast
R1(config-router)#neighbor 192.168.30.1 remote-as 6500
R1(config-router)#neighbor 192.168.30.1 update-source loopback 0
R1(config-router)#address-family vpnv4 unicast
R1(config-router-af)#neighbor 192.168.30.1 activate
R1(config-router-af)#neighbor 192.168.30.1 send-community extended
R1(config-router-af)#neighbor 192.168.30.1 next-hop-self
R1(config-router-af)#end
R3(config)#router bgp 6500
R3(config-router)#no bgp default ipv4-unicast
R3(config-router)#neighbor 192.168.10.1 remote-as 6500
R3(config-router)#neighbor 192.168.10.1 update-source loopback 0
R3(config-router)#address-family vpnv4 unicast
R3(config-router-af)#neighbor 192.168.10.1 activate
R3(config-router-af)#neighbor 192.168.10.1 send-community extended
R3(config-router-af)#neighbor 192.168.10.1 next-hop-self
R3(config-router-af)#end
*Mar 20 00:59:36.259: %BGP-5-ADJCHANGE: neighbor 192.168.10.1 Up
R1(config)#router bgp 6500
R1(config-router)#address-family ipv4 vrf A-1
R1(config-router-af)#redistribute ospf 11 vrf A-1 match ?
external Redistribute OSPF external routes
internal Redistribute OSPF internal routes
nssa-external Redistribute OSPF NSSA external routes
R1(config-router-af)#redistribute ospf 11 vrf A-1 match internal ?
external Redistribute OSPF external routes
metric Metric for redistributed routes
nssa-external Redistribute OSPF NSSA external routes
route-map Route map reference
<cr>
R1(config-router-af)#redistribute ospf 11 vrf A-1 match internal external ?
1 Redistribute external type 1 routes
2 Redistribute external type 2 routes
metric Metric for redistributed routes
nssa-external Redistribute OSPF NSSA external routes
route-map Route map reference
<cr>
R1(config-router-af)#$e ospf 11 vrf A-1 match internal external 1 external 2
R1(config-router-af)#end
R1(config)#router ospf 11 vrf A-1
R1(config-router)#redistribute bgp 6500 subnets
R1(config-router)#end
R3(config)#router bgp 6500
R3(config-router)#address-family ipv4 vrf A-2
R3(config-router-af)#$e ospf 13 vrf A-2 match internal external 1 external 2
R3(config-router-af)#end
R3(config)#router ospf 13 vrf A-2
R3(config-router)#redistribute bgp 6500 subnets
R3(config-router)#end
R1#show ip bgp vpnv4 all
BGP table version is 7, local router ID is 192.168.13.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 500:1 (default for vrf A-1)
*> 10.0.0.0 0.0.0.0 0 32768 ?
*>i 30.0.0.0 192.168.30.1 0 100 0 ?
*> 192.168.40.1/32 10.1.1.2 2 32768 ?
*>i 192.168.50.1/32 192.168.30.1 2 100 0 ?
R1#show ip route vrf A-1
Routing Table: A-1
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 10.0.0.0/8 is directly connected, FastEthernet0/0
L 10.1.1.1/32 is directly connected, FastEthernet0/0
B 30.0.0.0/8 [200/0] via 192.168.30.1, 00:05:57
192.168.40.0/32 is subnetted, 1 subnets
O 192.168.40.1 [110/2] via 10.1.1.2, 00:40:55, FastEthernet0/0
192.168.50.0/32 is subnetted, 1 subnets
B 192.168.50.1 [200/2] via 192.168.30.1, 00:05:57
R1#show ip route vrf A-1 bgp
Routing Table: A-1
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
B 30.0.0.0/8 [200/0] via 192.168.30.1, 00:06:24
192.168.50.0/32 is subnetted, 1 subnets
B 192.168.50.1 [200/2] via 192.168.30.1, 00:06:24
R1#ping vrf A-1 192.168.40.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.40.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 44/72/104 ms
R1#ping vrf A-1 192.168.50.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.50.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 104/144/248 ms
R3#show ip bgp vpnv4 all
BGP table version is 7, local router ID is 192.168.33.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 500:1 (default for vrf A-2)
*>i 10.0.0.0 192.168.10.1 0 100 0 ?
*> 30.0.0.0 0.0.0.0 0 32768 ?
*>i 192.168.40.1/32 192.168.10.1 2 100 0 ?
*> 192.168.50.1/32 30.1.1.2 2 32768 ?
R3#show ip route vrf A-2
Routing Table: A-2
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
B 10.0.0.0/8 [200/0] via 192.168.10.1, 00:14:56
30.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 30.0.0.0/8 is directly connected, FastEthernet0/0
L 30.1.1.1/32 is directly connected, FastEthernet0/0
192.168.40.0/32 is subnetted, 1 subnets
B 192.168.40.1 [200/2] via 192.168.10.1, 00:14:56
192.168.50.0/32 is subnetted, 1 subnets
O 192.168.50.1 [110/2] via 30.1.1.2, 00:22:01, FastEthernet0/0
R3#show ip route vrf A-2 BGP
Routing Table: A-2
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
B 10.0.0.0/8 [200/0] via 192.168.10.1, 00:15:15
192.168.40.0/32 is subnetted, 1 subnets
B 192.168.40.1 [200/2] via 192.168.10.1, 00:15:15
R3#ping vrf A-2 192.168.50.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.50.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 44/76/132 ms
R3#ping vrf A-2 192.168.40.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.40.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 68/108/152 ms
R4#ping 192.168.50.1 source 192.168.40.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.50.1, timeout is 2 seconds:
Packet sent with a source address of 192.168.40.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 156/186/228 ms
R4#traceroute 192.168.50.1
Type escape sequence to abort.
Tracing the route to 192.168.50.1
VRF info: (vrf in name/id, vrf out name/id)
1 10.1.1.1 108 msec 56 msec 104 msec
2 30.1.1.1 [MPLS: Label 308 Exp 0] 84 msec 104 msec 104 msec
3 30.1.1.2 172 msec 148 msec 128 msec
R5#ping 192.168.40.1 source 192.168.50.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.40.1, timeout is 2 seconds:
Packet sent with a source address of 192.168.50.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 140/156/180 ms
R5#traceroute 192.168.40.1
Type escape sequence to abort.
Tracing the route to 192.168.40.1
VRF info: (vrf in name/id, vrf out name/id)
1 30.1.1.1 36 msec 76 msec 56 msec
2 10.1.1.1 [MPLS: Label 104 Exp 0] 180 msec 168 msec 56 msec
3 10.1.1.2 180 msec 172 msec 228 msec
R4#show ip route ospf
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
O E2 30.0.0.0/8 [110/1] via 10.1.1.1, 00:15:14, FastEthernet0/0
192.168.50.0/32 is subnetted, 1 subnets
O E2 192.168.50.1 [110/2] via 10.1.1.1, 00:15:14, FastEthernet0/0
R5#show ip route ospf
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
O E2 10.0.0.0/8 [110/1] via 30.1.1.1, 00:12:07, FastEthernet0/0
192.168.40.0/32 is subnetted, 1 subnets
O E2 192.168.40.1 [110/2] via 30.1.1.1, 00:12:07, FastEthernet0/0
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