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Data MDT for Multicast VPNs and Dynamic IP Tunnels

The data multicast distribution tree (MDT) application for multicast VPNs can create dynamic point-to-multipoint GRE tunnels.

The data MDT application enables you to solve the problem of IP routers flooding unnecessary multicast information to PE routers that have no interested receivers for a particular VPN multicast group. The multicast data MDT solution requires the creation of a new dynamic IP tunnel by the PE router if the source exceeds a configured rate threshold parameter.

The data MDT application supports a co-located tunnel interface. The base GRE interface and its co-located data MDT interface must be both static or both dynamic.

The data MDT application creates a dynamic IP tunnel using the attributes in a customized destination profile.

When creating the dynamic IP tunnel, the data MDT application assigns its name using the following format:



mvpn-dynamic-number

For the data MDT application, you should configure a customized destination profile. For information about configuring multicast VPNs using GRE tunnels, see Configuring PIM for IPv4 Multicast in JUNOSe Multicast Routing Configuration Guide.

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