!--- This is the address-family VPNV4 configuration mode for !--- configuring BGP sessions.
neighbor 10.1.1.4 activate neighbor 10.1.1.4 send-community extended no auto-summary exit-address-family ! ip classless ip route 11.11.11.0 255.255.255.0 Serial8/0 192.168.10.1
!--- The static route in the global routing table is pointing to !--- the interface connected to CE 1.
ip route vrf customer1 0.0.0.0 0.0.0.0 192.168.67.1 global
!--- The static default route under customer1 VRF, routing packets !--- outside of VPN to the Internet gateway.
! routes ip route vrf customer1 11.11.11.0 255.255.255.0 192.168.10.1
!--- The static route for network 11.11.11.0/24 (CE-1 Network) under !---customer1 VRF ensures the reachability of CE 1 network from the !--- other VPN sites
P version 12.2 ! hostname P ! ip subnet-zero ! ip cef
!--- CEF switching is enabled.
! interface Loopback0 ip address 10.1.1.3 255.255.255.255 ! interface Ethernet0/0
!--- This is connected to PE 1.
ip address 10.10.23.3 255.255.255.0 tag-switching ip
!--- MPLS switching is enabled.
! interface Ethernet1/0
!--- This is connected to PE 2.
ip address 10.10.34.3 255.255.255.0 tag-switching ip ! interface Ethernet2/0
!--- This is connected to the Internet gateway.
ip address 10.10.36.3 255.255.255.0 tag-switching ip ! router ospf 1 log-adjacency-changes network 0.0.0.0 255.255.255.255 area 0 IGW version 12.2 ! hostname IGW ! ip subnet-zero ! ip cef
!--- This enabled CEF switching.
! interface Loopback0 ip address 10.1.1.6 255.255.255.255 ! interface Ethernet2/0
!--- This is connected to P router.
ip address 10.10.36.6 255.255.255.0 tag-switching ip ! interface Serial8/0
!--- This is connected to Internet R7.
ip address 192.168.67.1 255.255.255.252 ! router ospf 1 log-adjacency-changes network 0.0.0.0 255.255.255.255 area 0 ! router bgp 100 no synchronization bgp log-neighbor-changes network 11.11.11.0 mask 255.255.255.0 network 22.22.22.0 mask 255.255.255.0 neighbor 192.168.67.2 remote-as 200 no auto-summary
PE 2 version 12.2 ! hostname PE-2 ! ip subnet-zero ! ip vrf customer1
!--- Customer1 VRF is configured.
rd 100:1
!--- Route Distinguisher for VRF is configured.
route-target export 1:1 route-target import 1:1
!--- This configured the import and export policies for customer1 !--- VRF.
! ip cef
!--- This enabled CEF switching.
! interface Loopback0 ip address 10.1.1.4 255.255.255.255 interface Ethernet1/0
!--- Connected to P router.
ip address 10.10.34.4 255.255.255.0 tag-switching ip
!--- MPLS switching is enabled.
! interface Serial9/0
!--- Connected to CE 2 router.
ip vrf forwarding customer1
!--- This enables VRF forwarding on the interface.