Hi, We are using STS Tunnel between DC and India and it was working fne but suddenly it got down then i check the configuration then it was fine. After that I executed traceroute command on router and i m able to reach on other tunnel IP successfully. I delete one cryto command which is "crypto map outside_map 1 match address outside_1_cryptomap" then the tunnel works fine. I tried to add this command again then again Tunnel got down and when i delete then it works fine. Please suggest.