 | Copyright © 2008, Juniper Networks, Inc. All rights reserved. Trademark Notice. | |
The key components of each MX-series router are Dense Port Concentrators (DPCs), the Routing Engine, and the Switch Control Board.
The DPCs are optimized for Ethernet density and are capable of supporting up to 40 Gigabit Ethernet or 4 10-Gigabit Ethernet ports. The DPC assembly combines packet forwarding and Ethernet interfaces on a single board, with four 10-Gbps Packet Forwarding Engines. Each Packet Forwarding Engine consists of one chip for Layer 3 processing and one Layer 2 network processor. The DPCs interface with the power supplies and Switch Control Boards (SCBs).
The Routing Engine is an Intel-based PC platform that runs JUNOS Operating System. Software processes that run on the Routing Engine maintain the routing tables, manage the routing protocols used on the router, control the router interfaces, control some chassis components, and provide the interface for system management and user access to the router. Routing Engines communicate with DPCs via dedicated out-of-band management channels providing a clear distinction between the controls and forwarding planes.
The Switch Control Board (SCB) powers on and off cards, controls clocking, resets and booting, and monitors and controls systems functions, including fan speed, board power status, PDM status and control, and the system front panel. Integrated into the SCB is the switch fabric, which interconnects all of the DPCs within the chassis, supporting up to 48 Packet Forwarding Engines. The Routing Engine installs directly into the SCB.
The MX-series router is a router that has been optimized for Ethernet services. Examples of the wide range of Ethernet services provided by the MX-series include:
| Copyright © 2008, Juniper Networks, Inc. All rights reserved. Trademark Notice. | |