pppoe session stuck in LCP negotiation

Hi All,
I have configured pppoe session between two routers R1 and R2. I see that LCP
session gets stuck in negotiation state and I am unable to ping R1's ethernet
interface from R2. R1 is acting as a server and R2 is acting as a cilent.

topology:

R1(server)----Sw1----Sw2----R2(client)

sw1 and sw2 are connected to each other via trunk.

R2#sh pppoe session
     1 client session

Uniq ID PPPoE RemMAC Port VT VA State
           SID LocMAC VA-st Type
    N/A 297 0003.32b0.ac1b Gi0/1 Di1 Vi1 UP
                0013.c347.ad1b DOWN
R2#

Rack1R1#sh pppoe session
     1 session in LCP_NEGOTIATION (LCP) State
     1 session total

Uniq ID PPPoE RemMAC Port VT VA State
           SID LocMAC VA-st Type
    558 297 0013.c347.ad1b Gi0/1 3 N/A LCP
                0003.32b0.ac1b
Rack1R1#

Configs:

R1:

interface GigabitEthernet0/1
 no ip address
 duplex auto
 speed auto
 media-type rj45
 no negotiation auto
 pppoe enable group groupa
end

Rack1R1#sh run | b bba-group
bba-group pppoe groupa
 virtual-template 3
!

interface Virtual-Template3
 ip address 12.1.1.1 255.255.255.0
 peer default ip address dhcp-pool
 ppp chap password 0 cisco
 ppp authentication chap
!

ip dhcp excluded-address 12.1.1.1
!
ip dhcp pool R1
   network 12.1.1.0 255.255.255.0
!
!
Rack1R1#sh run | i username
username R2 password 0 cisco

R2:

interface Dialer1
 ip address dhcp
 encapsulation ppp
 dialer pool 1
 dialer idle-timeout 0
 dialer persistent
 dialer-group 1
 ppp authentication chap
 ppp chap password 0 cisco
end

R2#sh run int gi0/1
Building configuration...

Current configuration : 161 bytes
!
interface GigabitEthernet0/1
 no ip address
 duplex auto
 speed auto
 media-type rj45
 no negotiation auto
 pppoe enable
 pppoe-client dial-pool-number 1
end

R2#sh run | i username
username RackR1 password 0 cisco

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Received on Sun Jul 18 2010 - 12:31:02 ART