IPSec VPN regularly fails and requires you to disconnect and reconnect VPN

Question

Hi, 
 
 We have recently installed 2 new Sophos XG firewalls with multiple VPNs connected between them. 
 Recently we go a problem where certain of our IPSec VPN will disconnect with any warning or real reason and won't reconnect until you manually deactivate and reactivate the connection. 
 I tried to resolve it but I'm unable to find any similar issues. 
 Please see below screen shot of the log viewer file: 
 Sophos XG 1 - Public IP: 196.44.37.69 connecting to 154.119.53.137 (Sophos XG 2) 
 
 Sophoa XG 2 - Public IP: 154.119.53.137 connecting to 196.44.37.69 (Sophos XG 1) 
 
 Please see failed entries marked in yellow. 
 
 Thank you

Aditya Patel · Answer

Hi Mathew, 
 I would suggest you to create a IPsec Profile similair to Branch office(Initiator) and Head Office (Respond)while disabling Compression.

Joe Plunkett · Answer

I would take a hard look at the DPD settings. I haven't seen those authentication errors before but I have seen this behavior in tunnels. It was happening when the tunnels wanted to re-negotiate but were not fully tearing down existing sessions. It might help if you let us know what Firmware version you are running. Here is a link to a post which details building tunnels in v17. I hope it helps.