[c-nsp] XCONNECT

[M K]

Hi allI have the below topology
R8 S0/0/0 -- R2 S2/0 -- cloud (Same AS) -- XR2 g0/4/0/1 -- R10 F0/0
RP/0/3/CPU0:XR2#show run interface g0/4/0/1interface GigabitEthernet0/4/0/1l2transport
R2#sh run int s2/0
interface Serial2/0 no ip address no keepalive serial restart-delay 0 clock rate 128000 xconnect 20.20.20.20 108 pw-class TEST
R2#sh run | sec psepseudowire-class TEST encapsulation mpls
R8#sh run int s0/0/0interface Serial0/0/0 ip address 172.1.108.8 255.255.255.0 no keepalive

R10#sh run int f0/0interface FastEthernet0/0 ip address 172.1.108.10 255.255.255.0 speed auto full-duplex
RP/0/3/CPU0:XR2#sh run l2vpnThu May 30 16:55:42.842 UTCl2vpn pw-class TEST  encapsulation mpls  ! ! xconnect group GRP  p2p P2P   interface GigabitEthernet0/4/0/1   neighbor 2.2.2.2 pw-id 108    pw-class TEST
Now , R2 and XR2 have labels for each other's loopback 
R2#show mpls forwarding-table | inc 20.20.20.2022         21         20.20.20.20/32   0             Fa0/0.24   192.1.24.4             21         20.20.20.20/32   0             Fa0/0.25   192.1.25.5 
But the xconnect never comes up 
R2#sh mpls l2transport summary Destination address: 20.20.20.20, total number of vc: 1  0 unknown, 0 up, 1 down, 0 admin down, 0 recovering, 0 standby, 0 hotstandby
What else has to be done ?
Thanks