L2TP dials in successfully, but it aborts automatically after one minute

  L2TP dials in successfully, but it aborts automatically after one minute

PC―8850 (LAC)-- AR2831 (LNS) 

No

1. L2TP dials in successfully, and the address of virtual template could be pinged through, indicating that the configuration of L2TP is normal. The network delay may be too large or the quality is not good, causing the PPP link to be blocked.

2. In case L2TP dials in successfully, turn on the switch for debug ppp interface Virtual-Template1, the information as follows appears: 

      Virtual-Template1:0 : Echo Timer Expired ,Retransmit = 4                 

................

      Virtual-Template1:0 : Echo Timer Expired ,Retransmit = 1                 

...............

%Jul 22 17:32:35:114 2005 sanjin-route IFNET/5/UPDOWN:Line protocol on the inter

face Virtual-Template1:0 is DOWN                                               

%Jul 22 17:32:35:114 2005 sanjin-route IFNET/5/UPDOWN:PPP IPCP protocol on the i

nterface Virtual-Template1:0 is DOWN                                           

 *0.85497116 sanjin-route PPP/8/debug2:                                         

  PPP Event:                                                                   

      Virtual-Template1:0 : Echo Timer Expired ,Retransmit = 0                 

*0.85497116 sanjin-route PPP/8/debug2:                                         

  PPP Event:                                                                   

      Virtual-Template1:0 LCP Close  Event                                     

      state opened                                                              

*0.85497117 sanjin-route PPP/8/debug2:                                         

  PPP State Change:                                                            

      Virtual-Template1:0 LCP : opened --> closing