Configuring Tunnel Interfaces on an MX Series Router with a 16x10GE 3D MPC
MX960, MX480, and M240 routers support the 16-port 10-Gigabit Ethernet MPC (16x10GE 3D MPC) fixed configuration Field Replaceable Unit (FRU). Each Packet Forwarding Engine on a 16x10GE MPC can support a full-duplex 10Gbps tunnel without losing line-rate capacity. For example, a full-duplex 10Gbps tunnel can be hosted on a 10-Gigabit-Ethernet port, while two other 10-Gigabit-Ethernet ports on the same PFE can concurrently forward line-rate traffic.
To configure an MPC and its corresponding Packet Forwarding Engine to use tunneling services, include the tunnel-services statement at the [edit chassis fpc slot-number pic pic-number] hierarchy level. The Junos OS creates tunnel interfaces gr-fpc/pic/port.0, vt-fpc/pic/port.0, and so on. You also configure the amount of bandwidth reserved for tunnel services.
fpc slot-number is the slot number of the MPC. If two SCBs are installed, the range is 0 through 11. If three SCBs are installed, the range is 0 through 5 and 7 through 11.
pic number is the number of the Packet Forwarding Engine on the MPC. The range is 0 through 3.
bandwidth 10g is the amount of bandwidth to reserve for tunnel traffic on each Packet Forwarding Engine.
In the following example, you create tunnel interfaces on Packet Forwarding Engine 0 of MPC 4 with 10 Gbps of bandwidth reserved for tunnel traffic. With this configuration, the tunnel interfaces created are gr-4/0/0, pe-4/0/0, pd-4/0/0, vt-4/0/0, and so on.