site M (18.104.22.168)LAN
LAN(22.214.171.124)Site B #--------# (DR site) Site C LAN static nat 126.96.36.199-----188.8.131.52
End point ips of sites M : 192.168.6.2 site B 192.168.7.2 site C : 192.168.8.2
Site B and site C does not need to talk to each other
Site C and M will have a tunnel will work only in case site b goes down
MY site M is will have a site to site vpn conenction to site B .
In case site B goes down , site M should conenct to Site C ( which has a static nat to site B's lan ip)
How can I configure the above setup ?
How will site M detect that Site B is down and communicate with Site C automatically.
Could some one give an sample config for this vpn configuration on site M,site B and Site C
Site M and Site B has no nat statements .
Thanks in advance