MX-series routers process incoming and outgoing packets with the DPC. The MX-series routers do not use the more traditional Flexible Port Concentrators (FPCs) that are used by the T-series routing platforms and many of the M-series routing platforms. FPCs are populated with physical interface cards (PICs) for various interface types. The DPC supports up to one 40-Gigabit Ethernet or four 10-Gigabit Ethernet ports, combining these ports with four 10-Gbps Packet Forwarding Engines on a single interface card, combining the functions of four FPCs and the PICs.
The MX960 has 12 DPC slots. The MX480 has 7 DPC slots. The MX240 has 4 DPC slots. Each DPC has either 40 Gigabit Ethernet ports or 4 10-Gigabit Ethernet ports.
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Note: MX-series routers use DPCs rather than FPCs and therefore do not support Physical Interface Cards (PICs). In the JUNOS CLI, however, you use the FPC syntax to configure or display information about DPCs, and you use the PIC syntax to configure or display information about Packet Forwarding Engines on the DPCs. |
In addition to Layer 3 routing capabilities, the DPCs also have many Layer 2 functions that allow MX-series routing platforms to be used for many virtual LAN (VLAN) and other Layer 2 network applications.
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