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T640 Core Router
Hardware Guide
Published: 2010-10-28
Copyright © 2010, Juniper Networks, Inc.
Juniper Networks, Inc.
1194 North Mathilda Avenue
Sunnyvale, California 94089
USA
408-745-2000
www.juniper.net
This product includes the Envoy SNMP Engine, developed by Epilogue Technology, an Integrated Systems Company. Copyright © 1986-1997,
Epilogue Technology Corporation. All rights reserved. This program and its documentation were developed at private expense, and no part
of them is in the public domain.
This product includes memory allocation software developed by Mark Moraes, copyright © 1988, 1989, 1993, University of Toronto.
This product includes FreeBSD software developed by the University of California, Berkeley, and its contributors. All of the documentation
and software included in the 4.4BSD and 4.4BSD-Lite Releases is copyrighted by the Regents of the University of California. Copyright ©
1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994. The Regents of the University of California. All rights reserved.
GateD software copyright © 1995, the Regents of the University. All rights reserved. Gate Daemon was originated and developed through
release 3.0 by Cornell University and its collaborators. Gated is based on Kirton’s EGP, UC Berkeley’s routing daemon (routed), and DCN’s
HELLO routing protocol. Development of Gated has been supported in part by the National Science Foundation. Portions of the GateD
software copyright © 1988, Regents of the University of California. All rights reserved. Portions of the GateD software copyright © 1991, D.
L. S. Associates.
This product includes software developed by Maker Communications, Inc., copyright © 1996, 1997, Maker Communications, Inc.
Juniper Networks, Junos, Steel-Belted Radius, NetScreen, and ScreenOS are registered trademarks of Juniper Networks, Inc. in the United
States and other countries. The Juniper Networks Logo, the Junos logo, and JunosE are trademarks of Juniper Networks, Inc. All other
trademarks, service marks, registered trademarks, or registered service marks are the property of their respective owners.
Juniper Networks assumes no responsibility for any inaccuracies in this document. Juniper Networks reserves the right to change, modify,
transfer, or otherwise revise this publication without notice.
Products made or sold by Juniper Networks or components thereof might be covered by one or more of the following patents that are
owned by or licensed to Juniper Networks: U.S. Patent Nos. 5,473,599, 5,905,725, 5,909,440, 6,192,051, 6,333,650, 6,359,479, 6,406,312,
6,429,706, 6,459,579, 6,493,347, 6,538,518, 6,538,899, 6,552,918, 6,567,902, 6,578,186, and 6,590,785.
T640 Core Router Hardware Guide
Copyright © 2010, Juniper Networks, Inc.
All rights reserved. Printed in USA.
Revision History
October 2010—Corporate rebranding. Minor edits.
August 2010—Corporate rebranding. Minor edits.
May 2010—For Junos OS Release 10.2, added support of the clock interface ports on the SONET clock generator (SCG). Added the three-phase
delta and wye AC power supplies. Updated the European Community EMC Declaration of Conformity. Updated the DC power supply
specifications.
November 2009—Updated the amber LED to yellow.
September 2009—Completed topic conversion.
10 April 2009— 530-021112-01 Revision 5. Added the Enhanced Scaling FPC2 (T640-FPC2-ES) and Enhanced Scaling FPC4-1P
(T640-FPC4-1P-ES).
6 February 2009— 530-021112-01 Revision 4. Added the Enhanced Scaling FPC1 (T640-FPC1-ES).
31 December 2008— 530-021112-01 Revision 3. Added the 3-input 240-A power supply in 2–INPUTmode. Updated the power requirements.
28 October 2008— 530-021112-01 Revision 2. Updated the failover description for power supplies, high availability information, compliance
statement for acoustic noise, procedure for replacing serial cables, the replacement schedule for air filters, the number of fans, and the
weight of the rear fan tray. Added the T640 Enhanced Scaling FPC3 (T640-FPC3-ES).
22 June 2007— 530-021112-01 Revision 1. Updated DC input voltage range. Updated clearance requirements. Updated procedures for
mounting hardware. Add first Junos OS Release for each FPC. Removed end-of-life control board.
20 October 2006— 530-017398-01 Revision 1. Added European Community EMC Declaration of Conformity.
28 June 2006—530-015180-01 Revision 3. Added Lithium battery compliance statement. Updated Product Reclamation and Recycling
statement. Updated power information for FPCs. Added the power requirements for FPC4. Updated how much torque to apply when
securing the cable to a DC power supply. Corrected thermal output specification.
Copyright © 2010, Juniper Networks, Inc.ii
13 April 2006—530-015180-01 Revision 2. Changed replacement procedures to reflect the fact that some Routing Engines might or might
not have retaining screws. Updated Junos OS Release recommendation for graceful switchover.
9 January 2006—530-015180-01 Revision 1. Added note about SIB version B. Added graphic of T640-SIB. Added Enhanced Scaling FPC4
and its SIB version B requirement. Corrected power supply input DC current rating.
26 September 2005—530-014306-01 Revision 1. Corrected figures and added power supply input description.
14 September 2005—530-011256-01 Revision 3. Corrected chassis figures and updated SIB content.
25 April 2005—530-011256-01 Revision 2. Updated DC power supply illustration.
01 April 2004—530-011256-01 Revision 1. General updates and cleanup.
30 June 2003—530-007306-01 Revision 3. Updated information and minor edits.
02 April 2002—530-007306-01 Revision 2.
03 December 2001—530-007306-01 Revision 1. First edition.
The information in this document is current as of the date listed in the revision history.
YEAR 2000 NOTICE
Juniper Networks hardware and software products are Year 2000 compliant. The Junos OS has no known time-related limitations through
the year 2038. However, the NTP application is known to have some difficulty in the year 2036.
iiiCopyright © 2010, Juniper Networks, Inc.
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Copyright © 2010, Juniper Networks, Inc.iv
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Table of Contents
About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv
Junos OS Documentation and Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv
Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv
Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvi
Documentation Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvi
Documentation Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvii
Requesting Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii
Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxviii
Opening a Case with JTAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxix
Part 1 T640 Router Product Overview
Chapter 1 T640 Router Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
T640 Router Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
T640 Field-Replaceable Units (FRUs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
T640 Router FRU Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
T640 FRU List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
T640 Component Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Chapter 2 Overview of the T640 Router System Architecture . . . . . . . . . . . . . . . . . . . . . 7
T640 System Architecture Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
T640 Routing Engine Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
T640 Packet Forwarding Engine Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Data Flow Through the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chapter 3 T640 Router Hardware Component Overview . . . . . . . . . . . . . . . . . . . . . . . . . 13
T640 Chassis Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
T640 Midplane Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
T640 Flexible PIC Concentrators (FPCs) Overview . . . . . . . . . . . . . . . . . . . . . . . . 18
T640 FPC Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
FPC Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Identifying T640 FPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
T640 FPCs Supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
T640 PIC Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
T640 Switch Interface Boards (SIBs) Description . . . . . . . . . . . . . . . . . . . . . . . . . 30
T640 Host Subsystem Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
T640 Host Subsystem Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
T640 Routing Engine Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
T640 Routing Engine Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
T640 RE-600 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
T640 RE-1600 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
viiCopyright © 2010, Juniper Networks, Inc.
T640 RE-2000 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
T640 T Series Control Boards (T-CBs) Description . . . . . . . . . . . . . . . . . . . . 38
T640 T Series Control Boards (T-CBs) LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 39
T640 SONET Clock Generators (SCGs) Overview . . . . . . . . . . . . . . . . . . . . . . . . . 40
T640 Standard SONET Clock Generators (SCGs) Description . . . . . . . . . . . 40
T640 SONET Clock Generators (SCGs) LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 41
T640 Craft Interface Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
T640 Craft Interface Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
T640 Craft Interface Alarm LEDs and ACO/LT Button . . . . . . . . . . . . . . . . . . 42
T640 Craft Interface LCD and Navigation Buttons . . . . . . . . . . . . . . . . . . . . . 43
T640 Craft Interface Host Subsystem LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . 44
T640 Craft Interface SIB LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
T640 Craft Interface FPC LEDs and Online/Offline Buttons . . . . . . . . . . . . . 45
T640 Connector Interface Panel (CIP) Description . . . . . . . . . . . . . . . . . . . . . . . . 46
T640 Routing Engine Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
T640 Alarm Relay Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
T640 Power System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
T640 Power System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
T640 Two-Input 160-A DC Power Supply Overview . . . . . . . . . . . . . . . . . . . . 49
Two-Input 160-A DC Power Supply Description . . . . . . . . . . . . . . . . . . . 49
Two-Input 160-A DC Power Supply Inputs . . . . . . . . . . . . . . . . . . . . . . . . 50
Two-Input 160-A DC Power Supply Load Sharing and Fault
Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
T640 Two-Input 160-A DC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . . . 51
T640 Three-Input 240-A DC Power Supply Overview . . . . . . . . . . . . . . . . . . 52
Three-Input 240-A DC Power Supply Description . . . . . . . . . . . . . . . . . . 52
Three-Input 240-A DC Power Supply Inputs . . . . . . . . . . . . . . . . . . . . . . 52
Three-Input 240-A DC Power Supply Load Sharing and Fault
Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
T640 Three-Input 240-A DC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . 53
T640 Four-Input 240-A DC Power Supply Overview . . . . . . . . . . . . . . . . . . . 55
Four-Input 240-A DC Power Supply Description . . . . . . . . . . . . . . . . . . . 55
Four-Input 240-A DC Power Supply Inputs . . . . . . . . . . . . . . . . . . . . . . . 55
Four-Input 240-A DC Power Supply Load Sharing and Fault
Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
T640 Four-Input 240-A DC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . . 56
T640 Three-Phase Delta and Wye AC Power Supply Overview . . . . . . . . . . . 57
Three-Phase Delta AC Power Supply Description . . . . . . . . . . . . . . . . . . 57
Three-Phase Wye AC Power Supply Description . . . . . . . . . . . . . . . . . . . 58
AC Power Supply Load Sharing and Fault Tolerance . . . . . . . . . . . . . . . . 59
T640 Three-Phase Delta and Wye AC Power Supply LEDs . . . . . . . . . . . . . . 60
T640 Cooling System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
T640 Cable Management System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Part 2 T640 Router Initial Installation
Chapter 4 Preparing for T640 Router Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
T640 Site Preparation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
T640 Rack Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
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T640 Clearance Requirements for Airflow and Hardware Maintenance . . . . . . . 68
Chapter 5 T640 Router Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
T640 Router Installation Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Chapter 6 Unpacking the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Tools and Parts Required to Unpack the T640 Router . . . . . . . . . . . . . . . . . . . . . . 71
Unpacking the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Verifying the T640 Router Parts Received . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Chapter 7 Installing the T640 Router Mounting Hardware . . . . . . . . . . . . . . . . . . . . . . . 77
Verifying the T640 Rack-Mounting Hardware Received . . . . . . . . . . . . . . . . . . . . . 77
Before You Install the T640 Rack-Mounting Hardware . . . . . . . . . . . . . . . . . . . . . 77
Installing the T640 Mounting Hardware for a Four-Post Rack or Cabinet . . . . . . 78
Installing the T640 Mounting Hardware for an Open-Frame Rack . . . . . . . . . . . . 81
Chapter 8 Installing the T640 Router in to a Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Safety Requirements, Warnings, and Guidelines for Installing the T640
Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Overview of Installing the T640 Router in the Rack . . . . . . . . . . . . . . . . . . . . . . . . 85
Chapter 9 Installing the T640 Router Using a Mechanical Lift . . . . . . . . . . . . . . . . . . . . 87
Overview of Installing a T640 Router Using a Mechanical Lift . . . . . . . . . . . . . . . 87
Tools Required to Install the T640 Router Using a Mechanical Lift . . . . . . . . . . . . 87
Installing the T640 Router Using a Mechanical Lift . . . . . . . . . . . . . . . . . . . . . . . . 88
Attaching the T640 Router Installation Handle . . . . . . . . . . . . . . . . . . . . . . . 88
Mounting the T640 Chassis Using a Mechanical Lift . . . . . . . . . . . . . . . . . . . 89
Removing the T640 Router Installation Handle and Reinstalling the Power
Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Chapter 10 Installing the T640 Router Without a Mechanical Lift . . . . . . . . . . . . . . . . . 95
Overview of Installing the T640 Router Without a Mechanical Lift . . . . . . . . . . . 95
Tools and Parts Required to Install the T640 Router Without a Mechanical
Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Removing Components from the T640 Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Removing the T640 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Removing the T640 SIBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Removing the T640 T-CBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Removing the T640 SCGs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Removing the T640 Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Removing the T640 Cable Management System . . . . . . . . . . . . . . . . . . . . . 102
Removing the T640 Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Removing the T640 FPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Installing the T640 Chassis in the Rack Manually . . . . . . . . . . . . . . . . . . . . . . . . 104
Reinstalling Components in the T640 Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Reinstalling the T640 Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Reinstalling the T640 SCGs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Reinstalling the T640 T-CBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Reinstalling the T640 SIBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Reinstalling the T640 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Reinstalling the T640 FPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
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Reinstalling T640 Front Fan Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Reinstalling the T640 Cable Management System . . . . . . . . . . . . . . . . . . . . 114
Chapter 11 Grounding the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Tools and Parts Required to Ground the T640 Router . . . . . . . . . . . . . . . . . . . . . . 115
Connecting the T640 Grounding Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Chapter 12 Connecting the T640 Router to External Devices . . . . . . . . . . . . . . . . . . . . . 117
Tools and Parts Required to Connect the T640 Router to External Devices . . . . . 117
Overview of Connecting the T640 Router to Management and Alarm
Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Connecting the T640 Router to a Network for Out-of-Band
Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Connecting the T640 Router to a Management Console or Auxiliary
Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Connecting the T640 Router to an External Alarm-Reporting Device . . . . . . 119
Connecting PIC Cables to the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Chapter 13 Providing Power to the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Tools and Parts Required to Provide Power to the T640 Router . . . . . . . . . . . . . 123
Connecting DC Power to a T640 Router with Two-Input 160-A DC Power
Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Connecting DC Power to a T640 Router with Three-input 240-A DC Power
Supplies (2-INPUT Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Connecting DC Power to a T640 Router with Four-Input 240-A DC Power
Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Powering On a DC-Powered T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Connecting AC Power to a T640 Router with Three-Phase Delta AC Power
Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Connecting AC Power to a T640 Router with Three-Phase Wye AC Power
Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Powering On an AC-Powered T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Powering Off a T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Chapter 14 Performing the Initial T640 Junos OS Configuration . . . . . . . . . . . . . . . . . . 139
Preparing to Configure the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Initially Configuring the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Entering Configuration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Configuring User Accounts and Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Configuring System Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
Committing the Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
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Part 3 T640 Router Hardware Maintenance, Troubleshooting, and
Replacement Procedures
Chapter 15 Maintaining T640 Router Hardware Components . . . . . . . . . . . . . . . . . . . . 145
Tools and Parts Required to Maintain the T640 Hardware Components . . . . . . 145
Routine Maintenance Procedures for the T640 Router . . . . . . . . . . . . . . . . . . . . 145
Maintaining Cooling System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Maintaining the T640 Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Maintaining the T640 Fan Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Maintaining the T640 Host Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Maintaining the T640 Routing Engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Maintaining the T640 T-CBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Maintaining the T640 SCGs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Maintaining the T640 Packet Forwarding Engine Components . . . . . . . . . . . . . . 151
Maintaining T640 FPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Holding and Storing T640 FPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Holding T640 FPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Storing T640 FPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Maintaining T640 PICs and PIC Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Maintaining the T640 SIBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Maintaining the T640 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Chapter 16 Troubleshooting T640 Router Hardware Components . . . . . . . . . . . . . . . . 163
Overview of Troubleshooting Resources for the T640 Router . . . . . . . . . . . . . . . 163
T640 LED Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Craft Interface LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Component LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Troubleshooting Using the T640 Chassis and Interface Alarm Messages . . . . . . 165
Troubleshooting the T640 Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Troubleshooting the T640 FPCs and PICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Troubleshooting the T640 FPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Troubleshooting the T640 PICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Troubleshooting the T640 Power System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Chapter 17 Replacing T640 Router Hardware Components . . . . . . . . . . . . . . . . . . . . . . 175
Tools and Parts Required to Replace the T640 Hardware Components . . . . . . . 175
Replacing the T640 CIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Removing a T640 CIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Installing a T640 CIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Replacing the T640 Connections to Routing Engine Interface Ports . . . . . . . . . . 180
Replacing the T640 Management Ethernet Cables . . . . . . . . . . . . . . . . . . . . 181
Replacing the T640 Console or Auxiliary Cable . . . . . . . . . . . . . . . . . . . . . . . 183
Replacing the T640 Alarm Relay Wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Replacing the T640 Cooling System Components . . . . . . . . . . . . . . . . . . . . . . . 186
Replacing a T640 Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Removing a T640 Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Installing a T640 Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Removing a T640 Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
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Installing a T640 Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Replacing a T640 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Removing a Front T640 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Installing a Front T640 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Removing a Rear T640 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Installing a Rear T640 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Replacing a T640 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Removing a T640 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Installing a T640 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Replacing the T640 Host Subsystem Components . . . . . . . . . . . . . . . . . . . . . . . 198
Taking the T640 Host Subsystem Offline . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Replacing a T640 T-CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Removing a T640 T-CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Installing a T640 T-CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Replacing a T640 PC Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Removing a T640 PC Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Installing a T640 PC Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Replacing a DIMM Module in T640 Routing Engines . . . . . . . . . . . . . . . . . . 205
Removing a T640 DIMM Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Installing a T640 DIMM Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Replacing a T640 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Removing a T640 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Installing a T640 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Replacing a T640 SCG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Removing a T640 SCG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Installing a T640 SCG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Replacing a T640 SIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Removing a T640 Standard SIB or Standard SIB Version B . . . . . . . . . . . . . 212
Installing a T640 Standard SIB or Standard SIB Version B . . . . . . . . . . . . . . 213
Upgrading to a T640 Standard SIB Version B . . . . . . . . . . . . . . . . . . . . . . . . 214
Preparing to Upgrade to a T640 Standard SIB Version B . . . . . . . . . . . . 215
Replacing T640 Standard SIBs with Standard SIB Version B . . . . . . . . 215
Removing a T640-SIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Installing a T640-SIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Replacing T640 Packet Forwarding Engine Components . . . . . . . . . . . . . . . . . . 219
Replacing a T640 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Removing a T640 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Installing a T640 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Replacing a T640 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Removing a T640 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Installing a T640 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Replacing T640 PIC Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Removing a T640 PIC Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Installing a T640 PIC Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Replacing a T640 SFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Removing a T640 SFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Installing a T640 SFP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
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Replacing a T640 XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Removing a T640 XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Installing a T640 XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Replacing T640 Power System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Replacing a T640 Two-Input 160-A DC Power Supply . . . . . . . . . . . . . . . . . 239
Removing a T640 Two-Input 160-A DC Power Supply . . . . . . . . . . . . . 239
Installing a T640 Two-Input DC Power Supply . . . . . . . . . . . . . . . . . . . . 241
Replacing a T640 Three-Input 240-A DC Power Supply . . . . . . . . . . . . . . . 245
Removing a T640 Three-Input 240-A DC Power Supply . . . . . . . . . . . 245
Setting the Input Mode Switch on a Three-Input 240-A DC Power Supply
for a T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Installing a T640 Three-Input 240-A DC Power Supply . . . . . . . . . . . . 248
Replacing the T640 Cable Restraint on a Three-Input 240-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Connecting DC Power to a Three-Input 240-A DC Power Supply in a
T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Powering On a T640 Replacement Three-Input 240-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Replacing a T640 Four-Input 240-A DC Power Supply . . . . . . . . . . . . . . . . 254
Removing a T640 Four-Input 240-A DC Power Supply . . . . . . . . . . . . 254
Installing a T640 Four-Input 240-A DC Power Supply . . . . . . . . . . . . . 257
Replacing a T640 DC Power Supply Cable . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Removing a T640 DC Power Supply Cable . . . . . . . . . . . . . . . . . . . . . . . 261
Installing a T640 DC Power Supply Cable . . . . . . . . . . . . . . . . . . . . . . . 263
Replacing T640 DC Power Supplies with AC Power Supplies . . . . . . . . . . . 267
Removing the T640 DC Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . 267
Installing the T640 Three-Phase Delta or Wye AC Power Supplies . . . . 271
Replacing a T640 Three-Phase Delta AC Power Supply . . . . . . . . . . . . . . . . 274
Removing a T640 Three-Phase Delta AC Power Supply . . . . . . . . . . . . 275
Installing a T640 Three-Phase Delta AC Power Supply . . . . . . . . . . . . 278
Replacing a T640 Three-Phase Delta AC Power Supply Cord . . . . . . . . . . . 280
Removing a T640 Three-Phase Delta AC Power Supply Cord . . . . . . . . 281
Installing a T640 Three-Phase Delta AC Power Supply Cord . . . . . . . . 283
Replacing a T640 Three-Phase Wye AC Power Supply . . . . . . . . . . . . . . . . 285
Removing a T640 Three-Phase Wye AC Power Supply . . . . . . . . . . . . 285
Installing a T640 Three-Phase Wye AC Power Supply . . . . . . . . . . . . . 288
Replacing a T640 Three-Phase Wye AC Power Supply Cord . . . . . . . . . . . . 290
Removing a T640 Three-Phase Wye AC Power Supply Cord . . . . . . . . 290
Installing a T640 Three-Phase Wye AC Power Supply Cord . . . . . . . . . 292
Replacing a Front Air Filter Element on a T640 AC or DC Power Supply . . . 294
Removing a Front Air Filter Element on a T640 AC or DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Installing a Front Air Filter Element on a T640 AC or DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Replacing a Side Air Filter on a T640 AC Power Supply . . . . . . . . . . . . . . . . 295
Removing a Side Air Filter on a T640 AC Power Supply . . . . . . . . . . . . 296
Installing a Side Air Filter on a T640 AC Power Supply . . . . . . . . . . . . . 297
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Table of Contents
Part 4 Appendixes
Appendix A T640 Safety and Regulatory Compliance Information . . . . . . . . . . . . . . . . 301
Definition of Safety Warning Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
T640 Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
General Safety Guidelines for M Series, MX Series, and T Series Routers . . 303
General Safety Warnings for M Series, MX Series, and T Series Routers . . . 304
Qualified Personnel Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Restricted Access Area Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
T640 Preventing Electrostatic Discharge Damage . . . . . . . . . . . . . . . . . . . . 306
Fire Safety Requirements for M Series, MX Series, and T Series Routers . . . . . . 308
General Fire Safety Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
Fire Suppression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
Fire Suppression Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
T640 Installation Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . . . 310
T640 Chassis Lifting Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Installation Safety Warnings for M Series, MX Series, and T Series
Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Installation Instructions Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Rack-Mounting Requirements and Warnings . . . . . . . . . . . . . . . . . . . . . 311
Ramp Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
T640 Laser and LED Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . 315
T640 General Laser Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Laser and LED Safety Guidelines and Warnings for M Series, MX Series, and
T Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
General Laser Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
Class 1 Laser Product Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
Class 1 LED Product Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Laser Beam Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317
Radiation from Open Port Apertures Warning . . . . . . . . . . . . . . . . . . . . 318
Maintenance and Operational Safety Warnings for M Series, MX Series, and T
Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Battery Handling Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Jewelry Removal Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Lightning Activity Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321
Operating Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
Product Disposal Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
T640 General Electrical Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . 324
In Case of an Electrical Accident . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
General Electrical Safety Guidelines and Electrical Codes for M Series, MX
Series, and T Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
General Electrical Safety Warnings for M Series, MX Series, and T Series
Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Grounded Equipment Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Grounding Requirements and Warning . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Midplane Energy Hazard Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Multiple Power Supplies Disconnection Warning . . . . . . . . . . . . . . . . . . 327
Power Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
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T640 Core Router Hardware Guide
DC Power Electrical Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . . . . 329
T640 DC Power Electrical Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . 329
DC Power Electrical Safety Warnings for M Series, MX Series, and T Series
Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
DC Power Copper Conductors Warning . . . . . . . . . . . . . . . . . . . . . . . . . 330
DC Power Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
DC Power Wiring Terminations Warning . . . . . . . . . . . . . . . . . . . . . . . . . 332
AC Power Electrical Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
T640 AC Power Electrical Safety Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . 333
T640 Agency Approvals and Compliance Statements . . . . . . . . . . . . . . . . . . . . 334
T640 Agency Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
T640 Compliance Statements for NEBS . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Compliance Statements for EMC Requirements for M Series, MX Series,
and T Series Routers (Canada) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
T640 Compliance Statements for EMC Requirements (European
Community) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Compliance Statements for EMC Requirements for M Series, MX Series,
and T Series Routers (Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
Compliance Statements for EMC Requirements for M Series, MX Series,
and T Series Routers (United States) . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
Compliance Statements for Environmental Requirements for M Series, MX
Series, and T Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
T640 Compliance Statements for Acoustic Noise . . . . . . . . . . . . . . . . . . . . 339
Appendix B T640 Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
T640 Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Appendix C T640 Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
T640 Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Appendix D T640 Power Guidelines, Requirements, and Specifications . . . . . . . . . . . 345
T640 Chassis Grounding Cable and Lug Specifications . . . . . . . . . . . . . . . . . . . 345
Site Electrical Wiring Guidelines for M Series and T Series Routers . . . . . . . . . . 346
Distance Limitations for Signaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
Radio Frequency Interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
Electromagnetic Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
T640 DC Power Specifications and Requirements . . . . . . . . . . . . . . . . . . . . . . . 347
T640 DC Power System Electrical Specifications . . . . . . . . . . . . . . . . . . . . . 347
T640 DC Power Supply Electrical Specifications . . . . . . . . . . . . . . . . . . . . . 348
T640 DC Power System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
T640 DC Power Cable Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
T640 DC Power Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
T640 AC Power Specifications and Requirements . . . . . . . . . . . . . . . . . . . . . . . 355
T640 AC Power System Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
T640 Three-Phase Delta AC Power Supply Specifications . . . . . . . . . . . . . 355
T640 Three-Phase Wye AC Power Supply Specifications . . . . . . . . . . . . . . 356
T640 AC Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
T640 AC Power Cord Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358
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Table of Contents
Appendix E T640 Router Cable and Wire Guidelines and Specifications . . . . . . . . . . . 361
T640 Network Cable Specifications and Guidelines . . . . . . . . . . . . . . . . . . . . . . 361
T640 Signal Loss in Multimode and Single-Mode Fiber-Optic Cable . . . . . . 361
T640 Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . 362
T640 Attenuation in SONET/SDH PICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362
Calculating Power Budget for Fiber-Optic Cable for M Series, MX Series,
and T Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
Calculating Power Margin for Fiber-Optic Cable for M Series, MX Series, and
T Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
T640 Routing Engine Interface Cable and Wire Specifications . . . . . . . . . . . . . . 365
Appendix F T640 Router Cable Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367
T640 RJ-45 Connector Pinouts for the Routing Engine ETHERNET Port . . . . . . 367
T640 DB-9 Connector Pinouts for the Routing Engine AUXILIARY and CONSOLE
Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368
Appendix G Contacting Customer Support and Returning T640 Router Hardware . . 369
Locating T640 Component Serial Numbers Using the CLI . . . . . . . . . . . . . . . . . 369
Locating T640 Component Serial Number Labels . . . . . . . . . . . . . . . . . . . . . . . . 370
Locating the T640 T-CB Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . 370
Locating the T640 CIP Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . 371
Locating the T640 Craft Interface Serial Number Label . . . . . . . . . . . . . . . . 372
Locating the T640 FPC Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . 372
Locating the T640 PIC Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . 373
Locating the T640 Power Supply Serial Number Label . . . . . . . . . . . . . . . . 374
Locating the T640 Routing Engine Serial Number Label . . . . . . . . . . . . . . . 375
Locating the T640 SCG Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . 375
Locating the T640 SIB Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . 376
Contacting Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 377
T640 Return Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 377
Tools and Parts Required to Remove Components from a T640 Router . . . . . . 378
Packing the T640 Router for Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379
Packing T640 Router Components for Shipment . . . . . . . . . . . . . . . . . . . . . . . . 380
Part 5 Index
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 385
Copyright © 2010, Juniper Networks, Inc.xvi
T640 Core Router Hardware Guide
List of Figures
Part 1 T640 Router Product Overview
Chapter 2 Overview of the T640 Router System Architecture . . . . . . . . . . . . . . . . . . . . . 7
Figure 1: Router Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 2: Control Packet Handling for Routing and Forwarding Table Updates . . . . 9
Figure 3: Data Flow Through the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chapter 3 T640 Router Hardware Component Overview . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 4: Front View of T640 Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 5: Rear View of T640 Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 6: T640 Midplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 7: FPC Installed in a T640 Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 8: FPC Edges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 9: Enhanced Scaling FPC1 Supported by the T640 Router . . . . . . . . . . . . . 22
Figure 10: Standard FPC2 and FPC3 Supported by the T640 Router . . . . . . . . . . 23
Figure 11: Enhanced II FPC1, FPC2, and FPC3 Supported by the T640 Router . . . . 24
Figure 12: Enhanced Scaling FPC2 Supported by the T640 Router . . . . . . . . . . . . 25
Figure 13: Enhanced Scaling FPC3 Supported by the T640 Router . . . . . . . . . . . . 26
Figure 14: Enhanced Scaling FPC4 Supported by the T640 Router . . . . . . . . . . . . 27
Figure 15: T640 Enhanced Scaling FPC4-1P Supported by the T640 Router . . . . 28
Figure 16: Standard SIB and Standard SIB Version B . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 17: T640 SIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 18: Routing Engine 600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 19: Routing Engine 1600 (RE-1600) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 20: Routing Engine 2000 (RE-2000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 21: T-CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 22: SCG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 23: Front Panel of the T640 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 24: T640 LCD in Idle Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 25: T640 LCD in Alarm Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 26: CIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 27: Two-Input 160-A DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 28: Three-Input 240-A DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 29: Three-Input 240-A DC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . 54
Figure 30: Four-Input 240-A DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Figure 31: Four-Input 240-A DC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . . 56
Figure 32: Three-Phase Delta AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Figure 33: Three-Phase Delta AC Power Supply Connections . . . . . . . . . . . . . . . . 58
Figure 34: Three-Phase Delta AC Power Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Figure 35: Three-Phase Wye AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Figure 36: Three-Phase Wye AC Power Supply Connections . . . . . . . . . . . . . . . . . 59
xviiCopyright © 2010, Juniper Networks, Inc.
Figure 37: Wye Three-Phase AC Power Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Figure 38: Delta AC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Figure 39: Airflow Through the Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Figure 40: Cable Management System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Part 2 T640 Router Initial Installation
Chapter 4 Preparing for T640 Router Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Figure 41: Typical Open-Frame Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Figure 42: T640 Chassis Dimensions and Clearance Requirements . . . . . . . . . . . 68
Chapter 6 Unpacking the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Figure 43: Contents of the T640 Shipping Crate . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Chapter 7 Installing the T640 Router Mounting Hardware . . . . . . . . . . . . . . . . . . . . . . . 77
Figure 44: Positioning the Spacer Bar on the Rack . . . . . . . . . . . . . . . . . . . . . . . . 80
Figure 45: Installing the Mounting Hardware for a Four-Post Rack or Cabinet . . . 81
Figure 46: Installing the Mounting Hardware for an Open-Frame Rack . . . . . . . . 83
Chapter 9 Installing the T640 Router Using a Mechanical Lift . . . . . . . . . . . . . . . . . . . . 87
Figure 47: Removing a Power Supply Before Installing the Installation Handle . . 89
Figure 48: Attaching the Installation Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Figure 49: Loading the Router onto the Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Figure 50: Installing the Router in the Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Figure 51: Reinstalling a Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Chapter 10 Installing the T640 Router Without a Mechanical Lift . . . . . . . . . . . . . . . . . 95
Figure 52: Removing a Power Supply Before Installing the Router . . . . . . . . . . . . 98
Figure 53: Removing a SIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Figure 54: Removing a T-CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Figure 55: Removing an SCG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Figure 56: Removing the Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Figure 57: Removing a Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Figure 58: Removing a T640 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Figure 59: Attaching the Installation Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Figure 60: Installing the Router in the Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Figure 61: Reinstalling the Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Figure 62: Reinstalling an SCG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Figure 63: Reinstalling a T-CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Figure 64: Reinstalling a SIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Figure 65: Reinstalling a Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Figure 66: Reinstalling an FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Figure 67: Reinstalling a Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Chapter 12 Connecting the T640 Router to External Devices . . . . . . . . . . . . . . . . . . . . . 117
Figure 68: Routing Engine Management Ports and Alarm Relay Contacts . . . . . . 118
Figure 69: Routing Engine Ethernet Cable Connector . . . . . . . . . . . . . . . . . . . . . . 119
Figure 70: Console and Auxiliary Serial Port Connector . . . . . . . . . . . . . . . . . . . . . 119
Figure 71: Attaching a Cable to a PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Chapter 13 Providing Power to the T640 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Figure 72: Connecting DC Power to a Two-Input 160-A DC Power Supply . . . . . . 125
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Figure 73: Connecting DC Power to a Three-Input 240-A DC Power Supply in
2–INPUT Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Figure 74: Connecting Power to the Four-Input 240-A DC Power Supply . . . . . . 129
Figure 75: Connecting Power to a Three-Phase Delta AC Power Supply . . . . . . . 132
Figure 76: Connecting Power to the Three–Phase Wye AC Power Supply . . . . . . 134
Figure 77: Fastening the AC Power Cord to the Power Supply . . . . . . . . . . . . . . . 134
Part 3 T640 Router Hardware Maintenance, Troubleshooting, and
Replacement Procedures
Chapter 15 Maintaining T640 Router Hardware Components . . . . . . . . . . . . . . . . . . . . 145
Figure 78: Do Not Grasp the Connector Edge . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Figure 79: Do Not Carry an FPC with Only One Hand . . . . . . . . . . . . . . . . . . . . . . 154
Figure 80: Do Not Rest the FPC on an Edge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Figure 81: Holding an FPC Vertically . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Figure 82: Do Not Stack FPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Chapter 17 Replacing T640 Router Hardware Components . . . . . . . . . . . . . . . . . . . . . . 175
Figure 83: Removing a CIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Figure 84: Installing a CIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Figure 85: Routing Engine Interface Ports and Alarm Relay Contacts . . . . . . . . . 180
Figure 86: Ethernet Cable Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Figure 87: Routing Engine Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Figure 88: Routing Engine Alarm Relay Wires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Figure 89: Removing a Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Figure 90: Installing a Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Figure 91: Removing the Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Figure 92: Installing a Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Figure 93: Removing the Front Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Figure 94: Replacing the Front Filter Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Figure 95: Installing the Front Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Figure 96: Removing the Rear Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Figure 97: Removing the Rear Air Filter Element . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Figure 98: Installing the Rear Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Figure 99: Removing a Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Figure 100: Installing a Replacement Craft Interface . . . . . . . . . . . . . . . . . . . . . . 198
Figure 101: Removing a T-CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Figure 102: Installing a T-CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Figure 103: Removing a PC Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Figure 104: Installing a PC Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Figure 105: Installing the DIMM Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Figure 106: Removing the Routing Engine Cover . . . . . . . . . . . . . . . . . . . . . . . . . 208
Figure 107: Removing a Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Figure 108: Installing a Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Figure 109: Reinstalling the Routing Engine Cover . . . . . . . . . . . . . . . . . . . . . . . . 209
Figure 110: Removing an SCG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Figure 111: Installing an SCG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Figure 112: Removing a SIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Figure 113: Installing a SIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Figure 114: Removing a SIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
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List of Figures
Figure 115: Removing a T640 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Figure 116: Installing an FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Figure 117: Installing a T640 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Figure 118: Removing a PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Figure 119: Installing a PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Figure 120: Connecting Fiber-Optic Cable to a PIC . . . . . . . . . . . . . . . . . . . . . . . . 233
Figure 121: Small Form-Factor Pluggable (SFP) . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Figure 122: Removing a XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Figure 123: Installing a XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Figure 124: Disconnecting Power Cables from a Two-Input 160-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Figure 125: Removing a Two-Input 160-A Power Supply . . . . . . . . . . . . . . . . . . . . 241
Figure 126: Rear of the Power Supply Showing Midplane Connectors . . . . . . . . . 241
Figure 127: Installing a Replacement Two-Input 160-A DC Power Supply . . . . . . 244
Figure 128: Connecting Power Cables to a Two-Input 160-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Figure 129: Disconnecting Power Cables from the DC Power Supply . . . . . . . . . 246
Figure 130: Rear of the Power Supply Showing Midplane Connectors . . . . . . . . . 247
Figure 131: Removing a Three-Input 240-A DC Power Supply . . . . . . . . . . . . . . . 247
Figure 132: Three-Input 240-A DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . 248
Figure 133: Installing a Three-Input 240-A DC Power Supply . . . . . . . . . . . . . . . 249
Figure 134: Standard Cable Restraint on a Three-Input 240-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Figure 135: Optional Cable Restraint on a Three-Input 240-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Figure 136: Connecting Power Cables to the Power Supply . . . . . . . . . . . . . . . . . 253
Figure 137: Four-Input 240-A DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Figure 138: Disconnecting Power Cables from the Four-Input 240-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Figure 139: Removing a Four-Input 240-A DC Power Supply . . . . . . . . . . . . . . . . 257
Figure 140: Rear of the Power Supply Showing Midplane Connectors . . . . . . . . . 257
Figure 141: Connecting a Power Cable to a Four-Input 240-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Figure 142: Installing a Four-Input 240-A DC Power Supply . . . . . . . . . . . . . . . . 260
Figure 143: Disconnecting a DC Power Cable from a Two-Input 160-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Figure 144: Disconnecting a DC Power Cable from a Three-Input 240-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Figure 145: Disconnecting a DC Power Cable from a Four-Input 240-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Figure 146: Connecting a DC Power Cable to a Two-Input 160-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Figure 147: Connecting a DC Power Cable to a Three-Input 240-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Figure 148: Connecting a DC Power Cable to a Four-Input 240-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Figure 149: Rear of the DC Power Supply Showing Midplane Connectors . . . . . 268
Figure 150: Disconnecting DCPower Cables from a Two-Input 160-A DC Power
Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
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