Site to Site blip but won't reconnect

Graeme Ford 1 Reputation point
2022-06-29T15:18:31.733+00:00

Hi,
I set up some site to site (IPSEC) connections 18 months or so ago. Occasionally I get a blip but, until now they always reconnect. This time however 2 of the 2 connections refuse to reconnect. I have tried everything but can't see what the problem is. At each site we have a Draytek router which connects to the gateway. I have created new connections on the router, I have restarted both ends, I have deleted the LGN and connections and recreated them but still nothing.
Any help would be gratefully appreciated especially as I'm supposed to be on A/L and I've been at this all day.
Cheers
Graeme

Azure Virtual Network
Azure Virtual Network
An Azure networking service that is used to provision private networks and optionally to connect to on-premises datacenters.
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  1. msrini-MSFT 5,676 Reputation points Microsoft Employee
    2022-06-30T06:56:48.127+00:00

    Hi ,

    I can see that the device you are using is not listed among one of the validated devices mentioned in Azure docs (https://learn.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-about-vpn-devices)

    My suggestion is to use the validated device to listed in the doc. It doesn't mean that the IPSec will not work on non-validated device. Since it is not validated and it is developed by a different vendor, we need extensive testing and troubleshooting to figure out the root cause.

    I suspect this can be due to the rekey as this issue is not happening when the initial connection is established.

    Regards,
    Karthik Srinivas

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