Hi, I have a VPN tunnel, like this
R1-------internet----------R2
the ipsec tunnel is up
if the internet connection of R2 went down, or like R2 reboot, the R1 still shown the tunnel is up, after R2 boot up, only R2 can initate the IPSec tunnel, or on R1, I have to clear the session first, then I can initate the tunnel.
is there any possible let R1 initate the tunnel without clear the old session?
I tried enable the DPD feature, seems did not work
thanks