Packet Forwarding Engine; Table 5: Chassis Physical Specifications - Juniper Internet Router M160 Hardware Manual

For further safety information, see "Safety and Regulatory Compliance Information"
on page 221.
Table 5 summarizes physical specifications for the router chassis.

Table 5: Chassis Physical Specifications

Description
Chassis height
Chassis width
Chassis depth
Weight,
maximum
configuration
Weight,
minimum
configuration
Thermal output

Packet Forwarding Engine

The Packet Forwarding Engine is a multicomponent system that uses
application-specific integrated circuits (ASICs) to perform Layer 2 and Layer 3
packet switching, route lookups, and packet forwarding. The ASICs include the
Distributed Buffer Manager ASIC, Internet Processor II ASIC, I/O Manager ASIC,
Packet Director ASIC, and media-specific controller ASICs.
The Packet Forwarding Engine has the following components:
Value
35 in. (89 cm)
17.5 in. (44.5 cm) for sides of chassis
19 in. (48.3 cm) with front support posts and center-mounting brackets
29 in. (73.6 cm)
370.5 lb (168 kg)
190 lb (86 kg)
9400 BTU/hour
Midplane—Physically separates front and rear cavities inside the chassis,
distributes power from the power supplies, and transfers packets and signals
between router components, which plug into it.
Physical Interface Card (PIC)—Physically connects the router to network media
such as OC-12/STM-4, OC-48/STM-16, Ethernet, and channelized interfaces.
PICs are housed in Flexible PIC Concentrators (FPCs). (Quad-wide PICs, such
as the OC-192/STM-64 SONET/SDH PIC, are exceptions. Such PICs occupy
Hardware Component Overview
Packet Forwarding Engine
11