Azure VPN Gateway - Custom BGP Routes

Phil 291 Reputation points
2022-09-08T12:01:38.753+00:00

Hello Community,

i have a short Question about the Azure VPN Gateway and BGP Routes.
i would like to give my routes trough the other side the tunnel. On which Point must i configure this?

Its right that i must configure this at the point "Custom Selectors" on the Connection?

Thanks fo the help?

Greetings
Phil

Azure VPN Gateway
Azure VPN Gateway
An Azure service that enables the connection of on-premises networks to Azure through site-to-site virtual private networks.
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Accepted answer
  1. KapilAnanth-MSFT 49,611 Reputation points Microsoft Employee Moderator
    2022-09-12T08:57:49.82+00:00

    Hi @PhilippGerber-6516,

    Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
    I understand that you would like to know where to configure your custom BGP routes.

    Azure can only advertise the VNet address range (along with peered Vnets) via BGP.

    For a custom Range from OnPremises side

    • You should configure your OnPremises VPN device to advertise the custom BGP routes.
    • Any Route-based VPN Gateway from Azure end would accept the ranges coming from OnPremises via BGP.

    For a custom Range from Azure side

    As stated, a Route-based VPN gateway with BGP enabled would only advertise the VNet address range (along with peered Vnets) via BGP.

    • A Policy-based Gateway can support this.
    • Or a Route-based VPN gateway without BGP and "Use policy based traffic selector" enabled, gives you the flexibility to add your custom routes. (this makes the connection similiar to a Policy-based gateway)

    Refer :

    Feel free to let us know should you have any additional questions on this, I shall be glad to continue our discussion.

    Thanks,
    Kapil


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