We have one of the spoke sites which is having a VPN connection to the Hub Site. It has Crypto IPSEC tunnel configured. The problem is when the internet connection goes down from ISP side, and when it come up the IPSEC tunnel is not able to re-initiate automatically. We need to reboot router and modem (Provided by ISP). Then only it starts initiating session with remote peer.We have DSL connection provided by ISP. It goes down frequently and after coming UP the VPN connection is not getting recover. Is this issue related to any H/W model or IOS?