Chapter 1
System Overview
This chapter provides an overview of the Juniper Networks M160 Internet router,
discussing the following topics:
System Description on page 3
Field-Replaceable Units (FRUs) on page 4
System Redundancy on page 4
Safety Requirements, Warnings, and Guidelines on page 5
System Description
The M160 Internet router is a complete routing system that provides
SONET/SDH, ATM, Ethernet, and channelized interfaces for large networks
and network applications, such as those supported by Internet service
providers (ISPs). Application-specific integrated circuits (ASICs), a definitive
part of the router design, enable the router to forward data at the high
speeds demanded by current network media.
The router accommodates up to eight Flexible PIC Concentrators (FPCs), which can
each be configured with a variety of network media types, altogether providing up to
32 OC-12/STM-4, 32 OC-48/STM-16, or eight OC-192/STM-64 ports per system. The
router height of 35 in. (89 cm) enables stacked installation of two M160 systems in
a single floor-to-ceiling rack, for increased port density per unit of floor space.
The router’s maximum aggregate throughput is 160 gigabits per second (Gbps)
simplex or 80 Gbps full duplex. The router provides very high throughput for
any combination of Physical Interface Cards (PICs) that does not exceed 3
Gbps on an FPC1 or 10 Gbps on an FPC2. A combination that exceeds these
numbers is supported, but constitutes oversubscription.
The router architecture cleanly separates control operations from packet forwarding
operations, which helps to eliminate processing and traffic bottlenecks. Control
operations in the router are performed by the Routing Engine, which runs
JUNOS Internet software to handle routing protocols, traffic engineering, policy,
policing, monitoring, and configuration management. Forwarding operations
in the router are performed by the Packet Forwarding Engine, which consists
of hardware, including ASICs, designed by Juniper Networks.
System Description
3
Summary of Contents for Internet Router M160
Page 12: ...M160 Internet Router Hardware Guide xii Table of Contents ...
Page 16: ...M160 Internet Router Hardware Guide xvi List of Figures ...
Page 18: ...M160 Internet Router Hardware Guide xviii List of Tables ...
Page 24: ...M160 Internet Router Hardware Guide xxiv Requesting Support ...
Page 26: ...2 Product Overview ...
Page 30: ...M160 Internet Router Hardware Guide 6 Safety Requirements Warnings and Guidelines ...
Page 66: ...M160 Internet Router Hardware Guide 42 Cable Management System ...
Page 80: ...M160 Internet Router Hardware Guide 56 Routing Engine Architecture ...
Page 82: ...58 Initial Installation ...
Page 104: ...M160 Internet Router Hardware Guide 80 Unpacking the Router ...
Page 148: ...M160 Internet Router Hardware Guide 124 Configuring the JUNOS Internet Software ...
Page 150: ...126 Hardware Maintenance Replacement and Troubleshooting Procedures ...
Page 242: ...M160 Internet Router Hardware Guide 218 Troubleshooting the Power System ...
Page 244: ...220 Appendixes ...
Page 292: ...M160 Internet Router Hardware Guide 268 Packing Components for Shipment ...
Page 301: ...Part 5 Index Index 277 ...
Page 302: ...278 Index ...