Supported Platforms
Router Hardware Components
The Junos OS runs on the following types of Juniper Networks routers and Packet Transport Switches: ACX Series, J Series, M Series, MX Series, T Series, and PTX Series Packet Transport Switches. Each network device consists of the major hardware components as shown in Table 1. One or more of the major hardware components shown is used in each system.
 | Note: The ACX Series router is a single-board router with a built-in Routing Engine and one Packet Forwarding Engine. The “pseudo” FPCs and PICs are described in ACX2000 and ACX2100 Routers Hardware and CLI Terminology Mapping |
Table 1: Major Router Hardware Components
| M Series | MX Series | T Series | PTX Series | J Series | |
|---|---|---|---|---|---|
| Routing Engines | X | X | X | X | X |
| Control Board | X | X | X | ||
| Switch Interface Board (SIB) | X | X | X | ||
| Forwarding Engine Board (FEB) | X | ||||
| Power Supply | X | X | X | X | X |
| Cooling System | X | X | X | X | X |
| Dense Port Concentrators (DPC) | X | ||||
| Switch Control Board (SCB) | X | ||||
| Flexible PIC Concentrators (FPC) | X | X | X | ||
| Physical Interface Module (PIM) | X | ||||
| Physical Interface Card (PIC) | X | X | X |
Flexible PIC Concentrators (FPCs) are each populated by PICs for various interface types. On some routers, the PICs are installed directly in the chassis.
For information about specific components in your router, see the hardware guide for your router.
