IKEv2 tunnel does not restore after HA failover

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IKEv2 tunnel does not restore after HA failover

L2 Linker

I have an IKEv2 IPSec tunnel that does not automatically restore after an HA failover. Once the IKE-SA and IPSec-SA is manually cleared, the tunnel eventually restores. I have other IKEv2 tunnels that restore after several minutes with no intervention.

 

The VPN is configured to a GRE router so the only application I'm seeing on the session is "gre" and no ipsec-esp  or ike. Once IKE and IPsec are manually cleared, I show ipsec-esp, ike along with the original gre application. Is there a setting or work around to automatically restore the tunnel after the failover?

1 accepted solution

Accepted Solutions

Cyber Elite
Cyber Elite

@MikeSchrader 

This is a pretty common thing. I've personally never had luck getting a GRE tunnel to restore itself after a failover; what I've done is simply automate the clearing and test to bring it back online via the API. As soon as I can't reach the firewall on the other end, the script triggers the clear and test commands to bring it back online. 

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2 REPLIES 2

Cyber Elite
Cyber Elite

@MikeSchrader 

This is a pretty common thing. I've personally never had luck getting a GRE tunnel to restore itself after a failover; what I've done is simply automate the clearing and test to bring it back online via the API. As soon as I can't reach the firewall on the other end, the script triggers the clear and test commands to bring it back online. 

Thanks for your reply. I had a feeling this was related to GRE and I like the idea of creating an API script to use the clear and test commands to restore the tunnel. Thanks for your response.

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