[j-nsp] IPSec Interoperability with Cisco Router

[Eric Shih (TP/ERT)]

Hello

    I have a question about M20's IPSec behavior toward Cisco Router or Pix firewall. Becasue when IPSec tunnel
(dynamic tunnel SA) is established , if you manfully clear ipsec tunnel ( clear ipsec security association) or lifetime of 
IPSec SA expire, the IPSec tunnel will not negotiate with each other if there is no traffic going on. The only 
way to bring tunnel up is from Cisco side by using ping to trigger. It seems that we can not bring it up from 
J20's side. Do you have any idea of it ? 

BR // Eric Shih