I want to test out MPLS VPN in my lab. I have 3 routers. 2 PEs and 1P router, all cisco 2921. Something like this,

    -----                         ----                         -----
   | PE1 |.1____192.168.1.0____.2| P  |.2____192.168.2.0____.1| PE2 |
   |     |                       |    |                       |     |
    -----                         ----                         -----
 lo0:10.1.1.1                 lo0:10.1.1.2                 lo0:10.1.1.3

Here's the configuration file for each of them,

PE1 router

hostname PE1
!
no ipv6 cef
ip source-route
ip cef
!
!
!
ip vrf cust1
 rd 100:100
 route-target export 100:100
 route-target import 100:100
!
!
interface Loopback0
 ip address 10.1.1.1 255.255.255.255
!
interface GigabitEthernet0/0
 ip address 192.168.1.1 255.255.255.0
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 ip vrf forwarding cust1
 ip address 172.16.1.1 255.255.255.0
 duplex auto
 speed auto
!
router ospf 1
 network 10.1.1.1 0.0.0.0 area 0
 network 192.168.1.0 0.0.0.255 area 0
!
router bgp 100
 bgp log-neighbor-changes
 neighbor 10.1.1.3 remote-as 100
 neighbor 10.1.1.3 update-source Loopback0
 neighbor 172.16.1.2 remote-as 65001
 !
 address-family vpnv4
  neighbor 10.1.1.3 activate
  neighbor 10.1.1.3 send-community extended
 exit-address-family

For P router:

hostname P
!
no ipv6 cef
ip source-route
ip cef
!
interface Loopback0
 ip address 10.1.1.2 255.255.255.255
!
interface GigabitEthernet0/1
 ip address 192.168.1.2 255.255.255.0
 duplex auto
 speed auto
!
interface GigabitEthernet0/2
 ip address 192.168.2.2 255.255.255.0
 duplex auto
 speed auto
!
router ospf 1
 network 10.1.1.2 0.0.0.0 area 0
 network 192.168.1.0 0.0.0.255 area 0
 network 192.168.2.0 0.0.0.255 area 0
!

For PE2 router:

!
hostname PE2
!
no ipv6 cef
ip source-route
ip cef
!
!
!
ip vrf cust1
 rd 100:100
 route-target export 100:100
 route-target import 100:100
!
!
!
interface Loopback0
 ip address 10.1.1.3 255.255.255.0
!
interface GigabitEthernet0/0
 ip address 192.168.2.1 255.255.255.0
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 ip vrf forwarding cust1
 ip address 172.16.2.1 255.255.255.0
 duplex auto
 speed auto
!
router ospf 1
 network 10.1.1.3 0.0.0.0 area 0
 network 192.168.2.0 0.0.0.255 area 0
!
router bgp 100
 bgp log-neighbor-changes
 neighbor 10.1.1.1 remote-as 100
 neighbor 10.1.1.1 update-source Loopback0
 neighbor 172.16.2.2 remote-as 65001
 !
 address-family vpnv4
  neighbor 10.1.1.1 activate
  neighbor 10.1.1.1 send-community extended
 exit-address-family
!

I am following this article form cisco. But things are not working properly. Any help would be appreciated.