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eoliveira1988
eoliveira1988
New Member
May 27, 2019
Question

Problem with VPN Backup with MPLS

  • May 27, 2019
  • 1 reply
  • 2671 views
Dear,, I have two drives with 80G Fortigates and one MPLS circuit and one dedicated data circuit. Before I had two data circuit in which vpns were closed between units 01 and 02, I never had problems with failover. We put the MPLS directly into the firewall interface 3 and configured a direct route with the other end of the MPLS as the gateway. It has been configured in the following way: MPLS Administrative Distance: 2 Priority: 1 VPN_01 Administrative Distance: 2 Priority: 2 Both are configured in the same way on both ends. But when the MPLS link goes down, I'm forced to run a Bring down and Bring up on VPN_01 to get it to communicate. Note: The VPN is UP, but only get to traffic when I do this maneuver. Does anyone know why this happens? Link Healh has been configured, and I can see in the logs that the MPLS route has been removed

    1 reply

    Toshi_Esumi
    SuperUser
    Toshi_Esumi
    SuperUser
    May 29, 2019

    When both are up (a while), can you get ping responses right away from the other end of VPN interface IP from (you need to ping from the local FGT)? This follows a connected route so doesn't go to MPLS side, but goes through the tunnel regarless of the priority difference. I'm guessing the tunnel goes down when no traffic continues a while.

    Alexis_G
    Alexis_G
    New Member
    May 29, 2019

    You need to configure IP SLA.

    Look for Health check settings.

    The theory is that the device is monitoring a remote IP, if this IP SLA is lost, the routing changes to the next priority static route.

     

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