MPLS - CE-PE routing : OSPF basic

First: Configure basic MPLS VPN from R1 to R3(configs are down below.)
Second: Configure OSPF from R1 to R6
R4#
int lo 4
ip add 4.4.4.4                                       ### loopback 4 will be added to ospf by redistribution.
!
router ospf 1
 router-id 1.1.4.4
 redistribute connected subnets
 network 1.1.4.4 0.0.0.0 area 0
 network 1.1.14.4 0.0.0.0 area 0

R5#
router ospf 1
 router-id 1.1.5.5
 network 1.1.5.5 0.0.0.0 area 0
 network 1.1.25.5 0.0.0.0 area 0

R6#
router ospf 1
 router-id 1.1.6.6
 network 1.1.6.6 0.0.0.0 area 0
 network 1.1.36.6 0.0.0.0 area 0

R1#
router ospf 1 vrf company1                         ###OSPF have to use separate processes  for each client 
router-id 1.1.1.1                                                 and MPLS internal network.
network 1.1.14.1 0.0.0.0 area 0
redistribute bgp 1 subnets
exit
router bgp 1
address-family ipv4 vrf company1    
redistribute ospf 1 match internal external 1 external 2      ###When OSPF is redistributed into BGP,
by default, only internal network of OSPF will be redistrituted. To resolve this problem, "match" option is required.
R2#
router ospf 1 vrf company1
router-id 1.1.2.2
network 1.1.25.2 0.0.0.0 area 0
redistribute bgp 1 subnets
exit
router bgp 1
address-family ipv4 vrf company1
redistribute ospf 1 match internal external 1 external 2

R3#
router ospf 1 vrf company1
router-id 1.1.3.3
network 1.1.36.3 0.0.0.0 area 0
redistribute bgp 1 subnets
exit
router bgp 1
address-family ipv4 vrf company1
redistribute ospf 1 match internal external 1 external 2


Check Point:
The routes of R6 shown in the above are Inter Area routing(IA).

R1# show ip ospf database

R1# show ip ospf

To be continued.... 

---------------------------------Configs for MPLS VPN from R1 to R3----------------------------------


R1#
ip cef
!
ip vrf company1
 rd 1:100
 route-target export 1:100
 route-target import 1:100
!
mpls label protocol ldp
!
interface Loopback0
 ip address 1.1.1.1 255.255.255.255
!
interface FastEthernet0/0
 no ip address
 duplex auto
 speed auto
!
interface FastEthernet0/0.12
 encapsulation dot1Q 12
 ip address 1.1.12.1 255.255.255.0
 mpls ip
!
interface FastEthernet0/0.14
 encapsulation dot1Q 14
 ip vrf forwarding company1
 ip address 1.1.14.1 255.255.255.0
!
interface FastEthernet0/0.17
 encapsulation dot1Q 17
 ip address 1.1.17.1 255.255.255.0
!
router eigrp 1
 network 1.1.1.1 0.0.0.0
 network 1.1.12.1 0.0.0.0
 auto-summary
!
router bgp 1
 no synchronization
 bgp router-id 1.1.1.1
 bgp log-neighbor-changes
 neighbor 1.1.2.2 remote-as 1
 neighbor 1.1.2.2 update-source Loopback0
 no auto-summary
 !
 address-family vpnv4
  neighbor 1.1.2.2 activate
  neighbor 1.1.2.2 send-community extended
 exit-address-family
 !
 address-family ipv4 vrf company1
  no synchronization
 exit-address-family
!

R2#
ip cef
!
ip vrf company1
 rd 1:100
 route-target export 1:100
 route-target import 1:100
!
mpls label protocol ldp
!
interface Loopback0
 ip address 1.1.2.2 255.255.255.255
!
interface FastEthernet0/0
 no ip address
 duplex auto
 speed auto
!
interface FastEthernet0/0.12
 encapsulation dot1Q 12
 ip address 1.1.12.2 255.255.255.0
 mpls label protocol ldp
 mpls ip
!
interface FastEthernet0/0.23
 encapsulation dot1Q 23
 ip address 1.1.23.2 255.255.255.0
 mpls label protocol ldp
 mpls ip
!
interface FastEthernet0/0.25
 encapsulation dot1Q 25
 ip vrf forwarding company1
 ip address 1.1.25.2 255.255.255.0
!
router eigrp 1
 network 1.1.2.2 0.0.0.0
 network 1.1.12.2 0.0.0.0
 network 1.1.23.2 0.0.0.0
 auto-summary
!
router bgp 1
 no synchronization
 bgp router-id 1.1.2.2
 bgp log-neighbor-changes
 neighbor 1.1.1.1 remote-as 1
 neighbor 1.1.1.1 update-source Loopback0
 neighbor 1.1.1.1 route-reflector-client
 neighbor 1.1.3.3 remote-as 1
 neighbor 1.1.3.3 update-source Loopback0
 neighbor 1.1.3.3 route-reflector-client
 no auto-summary
 !
 address-family vpnv4
  neighbor 1.1.1.1 activate
  neighbor 1.1.1.1 send-community extended
  neighbor 1.1.1.1 route-reflector-client
  neighbor 1.1.3.3 activate
  neighbor 1.1.3.3 send-community extended
  neighbor 1.1.3.3 route-reflector-client
 exit-address-family
 !
 address-family ipv4 vrf company1
  no synchronization
 exit-address-family
!

R3#
ip cef
!
ip vrf company1
 rd 1:100
 route-target export 1:100
 route-target import 1:100
!
interface Loopback0
 ip address 1.1.3.3 255.255.255.255
!
interface FastEthernet0/0
 no ip address
 duplex auto
 speed auto
!
interface FastEthernet0/0.23
 encapsulation dot1Q 23
 ip address 1.1.23.3 255.255.255.0
 mpls label protocol ldp
 mpls ip
!
interface FastEthernet0/0.36
 encapsulation dot1Q 36
 ip vrf forwarding company1
 ip address 1.1.36.3 255.255.255.0
!
interface FastEthernet0/0.38
 encapsulation dot1Q 38
 ip address 1.1.38.3 255.255.255.0
!
router eigrp 1
 network 1.1.3.3 0.0.0.0
 network 1.1.23.3 0.0.0.0
 auto-summary
!
router bgp 1
 no synchronization
 bgp router-id 1.1.3.3
 bgp log-neighbor-changes
 neighbor 1.1.2.2 remote-as 1
 neighbor 1.1.2.2 update-source Loopback0
 no auto-summary
 !
 address-family vpnv4
  neighbor 1.1.2.2 activate
  neighbor 1.1.2.2 send-community extended
 exit-address-family
 !
 address-family ipv4 vrf company1
  no synchronization
 exit-address-family
!