Baseboard Components; Mx5, Mx10, Mx40, And Mx80 Cable Management Bracket Description - Juniper MX5 Hardware Manual

MX5, MX10, MX40, and MX80 Cable Management Bracket Description

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baseboard from the front of the chassis. Data packets are transferred across the
baseboard from the MIC to the Packet Forwarding Engine, and from the Packet Forwarding
Engine across the baseboard to the destination MIC.
The baseboard provides the following functions:
Powers on and powers off MICs
Controls clocking, system resets, and booting
Monitors and controls system functions, including fan speed, board power status, PDM
status and control, and the front panel
Provides interconnections to all the MICs within the chassis

Baseboard Components

The baseboard consists of the following components:
Junos Trio chipset—Manages packet data memory, queuing systems, and performs
packet lookup and encapsulation.
MIC connectors for both built-in and replaceable MICs including a WAN interface for
the built-in 10-Gigabit Ethernet MIC.
Intake and exhaust temperature sensors.
Circuits for chassis management and control.
Power circuits for the system components and Ethernet interfaces.
Routing Engine processor, which includes a 1.33-GHz CPU, and 2 GB of SDRAM.
2 4-GB NAND flash storage devices.
Packet Forwarding Engine processor, which includes a 1-GHz CPU, a system controller,
and 1 GB of SDRAM. Connects to the Routing Engine through a Gigabit Ethernet link.
Clock logic.
The cable management bracket (see
and installs on the left side of the chassis. The cable management bracket allows you
to route the cables outside the router and away from the MICs.
Figure 11 on page 28) consists of plastic dividers
Chapter 1: Overview
27