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interface (Virtual Tunnel in Routing Instances)


Hierarchy Level


In a multiprotocol BGP (MBGP) multicast VPN (MVPN), configure a virtual tunnel (VT) interface.

VT interfaces are needed for multicast traffic on routing devices that function as combined provider edge (PE) and provider core (P) routers to optimize bandwidth usage on core links. VT interfaces prevent traffic replication when a P router also acts as a PE router (an exit point for multicast traffic).

In an MBGP MVPN extranet, if there is more than one VRF routing instance on a PE router that has receivers interested in receiving multicast traffic from the same source, VT interfaces must be configured on all instances.

Starting in Junos OS Release 12.3, you can configure multiple VT interfaces in each routing instance. This provides redundancy. A VT interface can be used in only one routing instance.


vt-fpc/pic/port.unit-number—Name of the VT interface.

The remaining statements are explained separately. See CLI Explorer.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 9.4.