[c-nsp] multihop VPDN Problem

[Edi Guntoro]

DA,
I'm trying to setup multihop vpdn using cisco router, here are the network diagram;
PC<--pppoe-->LAC<--L2TP-->LNS1<--L2TP-->LNS2
But, I have a problem with the connection, LNS1 never triger L2tp connection to LNS2. And on LNS2, I suspect the debug message "ppp48 PPP: LCP Jam failed on [MRU] option"
Regards
Igun
Here are the relevant config;
BRAS/LAC
vpdn enable
vpdn search-order domain  
!
vpdn-group 13
 request-dialin
  protocol l2tp
  domain indonet.net
 initiate-to ip 124.81.94.29 
 local name BRAS
 l2tp tunnel password 0 LACLNS1
!         
vpdn-group ppoe
 accept-dialin
  protocol pppoe
  virtual-template 15

interface Virtual-Template15
 no ip address
 no peer default ip address
 ppp authentication chap callin


LNS1
vpdn enable
vpdn multihop
vpdn logging
vpdn history failure table-size 50
!
vpdn-group FromLAC
 accept-dialin
  protocol l2tp
  virtual-template 13
 terminate-from hostname BRAS
 l2tp tunnel password 0 LACLNS1
!         
vpdn-group TowardsLNS2
 request-dialin
  protocol l2tp
  domain indonet.net
 initiate-to ip 124.81.78.241
 local name MY-ISG
 l2tp tunnel password 0 LNS1LNS2

interface GigabitEthernet0/2
 ip address 124.81.94.29 255.255.255.252
 load-interval 30
 media-type rj45
 speed 100
 duplex full
 negotiation auto
 no snmp trap link-status

interface GigabitEthernet0/3
 ip address 124.81.78.242 255.255.255.252
 media-type rj45
 speed 100
 duplex full
 no negotiation auto

interface Virtual-Template13
 no ip address
 ppp authentication chap callin


LNS2
vpdn enable

username test at cisco.com password cisco
!
vpdn-group FromLNS1
 accept-dialin
  protocol l2tp
  virtual-template 13
 terminate-from hostname MY-ISG
 local name ISGDEV2
 l2tp tunnel password 0 LNS1LNS2

interface GigabitEthernet0/2
 ip address 124.81.78.241 255.255.255.252
 media-type rj45
 speed 100
 duplex full
 no negotiation auto

interface Virtual-Template13
 ip unnumbered GigabitEthernet0/2
 peer default ip address pool multihop
 ppp authentication chap callin

ip local pool multihop 192.168.1.2 192.168.1.254