The MX-series Ethernet Services Routers support Dense Port Concentrators (DPCs) with built-in Ethernet ports and does not support Tunnel Services PICs. To create tunnel interfaces on an MX-series router, you configure a DPC and the corresponding Packet Forwarding Engine by including the tunnel-services statement at the [edit chassis fpc slot-number pic pic-number] hierarchy level. For slot-number, specify the number of the DPC, and for pic-number, specify the number of the Packet Forwarding Engine. Each DPC includes four Packet Forwarding Engines.
You can also specify the amount of bandwidth to allocate for tunnel traffic on each Packet Forwarding Engine by including the bandwidth statement at the [edit chassis fpc slot-number pic pic-number] hierarchy level. For more information, see the JUNOS System Basics Configuration Guide.