Hardware Overview

The JUNOS software runs on three types of Juniper Networks routing platforms: J-series, M-series, and T-series. The routing platforms consist of the following major hardware components:

• Routing Engine
• Control Board
• Chassis
• Switch interface boards
• Physical Interface Card (PIC)
• Flexible PIC Concentrators (FPCs), each populated by PICs for various interface types. On some routing platforms, the PICs are installed directly in the chassis.
• Power supplies
• Cooling system

For information about specific components in your routing platform, see the hardware guide for your routing platform.