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Virtual private networks / Re: IPSec Tunnel with Dual WAN Failover GW_Group
« on: Today at 04:13:25 am »
Hi Monviech (Cedrik),
the gateway switching trick works well if i have one ISP in the HQ, and two ISPs in the branch office.
When the branch office ISP 1 goes down, it will reconnect using the backup isp to reach to HQ.
But... if both sites have 2 ISPs, when HQ ISP1 goes down, there's a lot of retransmissions due to dpd action, and eventually it trows away the half open connection, and keep failing at retransmissions until give up.
the gateway switching trick works well if i have one ISP in the HQ, and two ISPs in the branch office.
When the branch office ISP 1 goes down, it will reconnect using the backup isp to reach to HQ.
But... if both sites have 2 ISPs, when HQ ISP1 goes down, there's a lot of retransmissions due to dpd action, and eventually it trows away the half open connection, and keep failing at retransmissions until give up.



