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tunnel-devices (Protocols AMT)


Hierarchy Level


List one or more tunnel-capable Automatic Multicast Tunneling (AMT) PICs to be used for creating multicast tunnel (ud) interfaces. Creating an AMT PIC list enables you to control the load-balancing implementation.

Tunnel-capable PICs include DPC and MPC.

The physical position of the PIC in the routing device determines the multicast tunnel interface name.


Multicast tunnel interfaces are created on all available tunnel-capable AMT PICs, based on a round-robin algorithm.


ud-fpc/pic/port—Interface that is automatically generated when a tunnel-capable PIC is installed in the routing device.


Each tunnel-devices statement keyword is optional. By default, all configured tunnel devices are used. The keyword selects the subset of configured tunnel devices.

Tunnel devices must be configured on MX Series routers. They are not automatically available like M Series routers that have dedicated PICs. On MX Series routers, the tunnel device port is the next highest number after the physical ports – a PIC created with the tunnel-services statement at the [edit chassis fpc slot-number pic number] hierarchy level.

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 13.2.