Juniper MX204 Hardware Guide

Replacing an MX204 DC Power Supply | 130
Power Consumption for a DC-Powered MX204 Router | 72
MX204 Host Subsystem
IN THIS SECTION
MX204 Routing Engine Description | 46
MX204 Routing Engine LEDs | 49
MX204 Routing Engine Description
IN THIS SECTION
Routing Engine Functions | 46
Routing Engine Components | 47
Routing Engine Front Panel | 47
Routing Engine Interface Ports | 48
The host subsystem provides routing protocol processes, as well as software processes that control the
router’s interface, the chassis components, system management, and user access to the router. These
routing processes run on top of a kernel that interacts with the Packet Forwarding Engine. The MX204
host subsystem consists of a single built-in Routing Engine.
This topic covers:
Routing Engine Functions
The Routing Engine is built-in on the MX204 baseboard and cannot be replaced. The Routing Engine
performs all route-processing functions, and provides performs chassis control and management plane
functionality. The Routing Engine also provides control plane functions.
46

Juniper MX204 Specifications

General

Cooling type	Active
Product color	Gray
Rack capacity	1U
Rack mounting	Yes
Number of fans	3 fan(s)
AC input voltage	100 - 240 V
Number of power supply units	2
Operating altitude	0 - 1828 m
Operating temperature (T-T)	0 - 55 °C
Operating relative humidity (H-H)	5 - 90 %

Weight and Dimensions

Depth	475 mm
Width	447 mm
Height	44.5 mm
Weight	10500 g