T640 Router Overview; T640 Router Description - Juniper T640 Hardware Manual

CHAPTER 1

T640 Router Overview

T640 Router Description

Related
Documentation
Copyright © 2010, Juniper Networks, Inc.
T640 Router Description on page 3
T640 Field-Replaceable Units (FRUs) on page 4
T640 Component Redundancy on page 5
The T640 Core Router is a complete routing system that provides Gigabit Ethernet,
SONET/SDH, and other high-speed interfaces for large networks and network applications,
such as those supported by Internet service providers (ISPs).
Application-specific integrated circuits (ASICs) are a definitive part of the router design;
these ASICs enable the router to achieve data forwarding rates that match current
fiber-optic capacity.
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
128 SONET/SDH OC48/STM16, 32 SONET/SDH OC192/STM64, or 128 Gigabit Ethernet
ports for the router. In a standalone configuration, the router's maximum aggregate
throughput is 320 Gbps, full duplex.
The router architecture cleanly separates control operations from packet forwarding
operations. This design eliminates processing and traffic bottlenecks, permitting the
router to achieve high performance. Control operations in the router are performed by
the host subsystem, which runs Junos OS to handle routing protocols, traffic engineering,
policy, policing, monitoring, and configuration management. Forwarding operations in
the router are performed by the Packet Forwarding Engines, which consist of hardware,
including ASICs, designed by Juniper Networks.
The router is a modular, rack-mountable system. Two routers can be installed in one
standard, 78-in. telco rack.
T640 Chassis Description on page 13
T640 Physical Specifications on page 341
T640 Environmental Specifications on page 343
T640 DC Power System Electrical Specifications on page 347
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