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Interprovider Layer 3 VPN Option A

  • 1.  Interprovider Layer 3 VPN Option A

    This message was posted by a user wishing to remain anonymous
    Posted 09-23-2023 20:03
    This message was posted by a user wishing to remain anonymous

    Example: Configuring Interprovider Layer 3 VPN Option A

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    Example: Configuring Interprovider Layer 3 VPN Option A
    ACX Series,MX Series,T Series,M Series. This is the simplest and least scalable interprovider VPN solution to the problem of providing VPN services to a customer that has different sites, not all of which can use the same service provider (SP).
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    Hi , 

    We know that Inter provider Layer 3 VPN Option A provides inter provider VRF-to-VRF connections at the AS boundary routers (ASBRs) , which means that traffic between ASBRs will be in IPv4 format and no need to enable MPLS on Interfaces connected between ASBRs like option A and C  .

    why in this example MPLS enabled on the interfaces connected between ASBRs ?