Juniper M120 Hardware Manual

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M120 Multiservice Edge Router

Hardware Guide

Published: 2010-10-15

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Juniper Networks, Inc. 1194 North Mathilda Avenue Sunnyvale, California 94089 USA 408-745-2000 www.juniper.net

This productincludes the Envoy SNMP Engine, developed by EpilogueTechnology,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 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.

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.

M120 Multiservice Edge Router Hardware Guide

Writing: Sheila Nolte Editing: Stella Hackell, Fran Mues Illustration: Faith Bradford Brown Cover Design: Edmonds Design

Revision History October 2010—Corporate rebranding. August 2010—Corporate rebranding. January 2010—Corrected power supply terminology. Updated FPC description. November 2009—Updated LED amber to yellow and updated power supply terminology. October 2009—Updated product names. Revised sections into modular topics for easier customer access. 12 October 2008—530-017784-01 Revision 4. Added external clock synchronization. 29 June 2007—530-017784-01 Revision3. Added airfilter replacement recommendation.Added additional safety information and DC input voltages. Updated the connect DC power procedure. 30 March 2007—530-017784-01 Revision 2. Updated AC plug information and added the design specification for the Italian AC power cord. 12 January 2007—530-017784-01 Revision 1. Added FEB redundancy support. 2 November 2006—530-014640-01 Revision 2. Updated FPC Type 2 throughput. 6 October 2006—530-014640-01 Revision 1. Initial Release

The information in this document is current as of the date listed in the revision history.

YEAR 2000 NOTICE

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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.

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END USER LICENSE AGREEMENT

READ THIS END USER LICENSE AGREEMENT (“AGREEMENT”) BEFORE DOWNLOADING, INSTALLING, OR USING THE SOFTWARE.

BY DOWNLOADING, INSTALLING, OR USING THE SOFTWARE OR OTHERWISE EXPRESSING YOUR AGREEMENT TO THE TERMS CONTAINED HEREIN, YOU (AS CUSTOMER OR IF YOU ARE NOT THE CUSTOMER, AS A REPRESENTATIVE/AGENT AUTHORIZED TO BIND THE CUSTOMER) CONSENTTO BEBOUND BY THISAGREEMENT. IF YOUDO NOTOR CANNOT AGREE TO THE TERMS CONTAINED HEREIN, THEN (A) DO NOT DOWNLOAD, INSTALL, OR USE THE SOFTWARE, AND (B) YOU MAY CONTACT JUNIPER NETWORKS REGARDING LICENSE TERMS.

1. The Parties. The parties to this Agreement are (i) Juniper Networks, Inc. (if the Customer’s principal office is located in the Americas) or Juniper Networks (Cayman) Limited(if the Customer’s principal office islocated outside the Americas) (suchapplicable entitybeing referred to herein as “Juniper”), and (ii) the person or organization thatoriginally purchased fromJuniper oran authorizedJuniper reseller the applicable license(s) for use of the Software (“Customer”) (collectively, the “Parties”).

2. The Software. In this Agreement, “Software” means the program modules and features of the Juniper or Juniper-supplied software, for which Customer has paid the applicable license or support fees to Juniper or an authorized Juniper reseller, or which was embedded by Juniper in equipment which Customer purchased fromJuniper or an authorized Juniper reseller. “Software” also includes updates, upgrades and new releases of such software. “Embedded Software” means Software which Juniper has embedded in or loaded onto the Juniper equipment and any updates, upgrades, additions or replacements which are subsequently embedded in or loaded onto the equipment.

3. License Grant. Subject to payment ofthe applicablefees andthe limitationsand restrictions set forth herein, Juniper grants to Customer a non-exclusive and non-transferable license, without right to sublicense, to use the Software, in executable form only, subject to the following use restrictions:

a. Customer shall use Embedded Software solely as embedded in, and for execution on, Juniper equipment originally purchased by Customer from Juniper or an authorized Juniper reseller.

b. Customer shall use the Software on a single hardware chassis having a single processing unit, or as many chassis or processing units for which Customer has paid the applicable license fees; provided, however, with respect to the Steel-Belted Radius or Odyssey Access Client software only, Customer shall use such Software on a single computer containing a single physical random access memory space and containing any number of processors. Use of the Steel-Belted Radius or IMS AAA software on multiple computers or virtual machines (e.g., Solaris zones) requires multiple licenses, regardless of whether such computers or virtualizations are physically contained on a single chassis.

c. Product purchase documents, paper or electronic user documentation, and/or the particular licenses purchased by Customer may specify limitsto Customer’s use of the Software. Such limitsmay restrict use to a maximumnumber of seats,registered endpoints, concurrent users, sessions, calls, connections, subscribers, clusters, nodes, realms, devices, links, ports or transactions, or require the purchase of separate licenses to use particular features, functionalities, services, applications, operations, or capabilities, or provide throughput, performance, configuration, bandwidth, interface, processing, temporal, or geographical limits. In addition, such limits may restrict the use of the Software to managing certain kinds of networks or require the Software to be used only in conjunction with other specific Software. Customer’s use of the Software shall be subject to all such limitations and purchase of all applicable licenses.

d. For any trial copy of the Software, Customer’s right to use the Software expires 30 days after download, installation or use of the Software. Customer may operate the Software after the 30-day trial period only if Customer pays for a license to do so. Customer may not extend or create an additional trial period by re-installing the Software after the 30-day trial period.

e. The Global Enterprise Edition of the Steel-Belted Radius software may be used by Customer only to manage access to Customer’s enterprise network. Specifically, service provider customers are expressly prohibited from using the Global Enterprise Edition of the Steel-Belted Radius software to support any commercial network access services.

The foregoing license is not transferable or assignable by Customer. No license is granted herein to any user who did not originally purchase the applicable license(s) for the Software from Juniper or an authorized Juniper reseller.

4. Use Prohibitions. Notwithstanding the foregoing, the license provided herein does not permit the Customer to, and Customer agrees not to and shall not: (a) modify, unbundle, reverse engineer, or create derivative works based on the Software; (b) make unauthorized copies of the Software (except as necessary for backup purposes); (c) rent, sell, transfer, or grant any rights in and to any copy of the Software,in any form, to any third party;(d) remove any proprietary notices, labels, or markson or in any copy ofthe Softwareor any product in which the Software is embedded; (e) distribute any copy of the Software to any third party, including as may be embedded in Juniper equipment sold in the secondhandmarket; (f) use any‘locked’ or key-restricted feature, function, service,application, operation,or capability without first purchasing the applicable license(s) and obtaining a valid key from Juniper, even if such feature, function, service, application, operation, or capability is enabled without a key; (g) distribute any key for the Software provided by Juniper to any third party; (h) use the

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Software in any manner that extends or is broader than the uses purchased by Customer from Juniper or an authorized Juniper reseller; (i) use Embedded Software on non-Juniper equipment; (j) use Embedded Software (or make it available for use) on Juniper equipment that the Customer did not originally purchase from Juniper or an authorized Juniper reseller; (k) disclose the results of testing or benchmarking of the Software to any third party without the prior written consent of Juniper; or (l) use the Software in any manner other than as expressly provided herein.

5. Audit. Customer shall maintain accurate records as necessary to verify compliance with this Agreement. Upon request by Juniper, Customer shall furnish such records to Juniper and certify its compliance with this Agreement.

6. Confidentiality. The Parties agree that aspects of the Software and associated documentation are the confidential property of Juniper. As such, Customer shall exercise all reasonable commercial efforts to maintain the Software and associated documentation in confidence, which at a minimum includes restricting access to the Software to Customeremployees and contractors having a need to use the Software for Customer’s internal business purposes.

7. Ownership. Juniper and Juniper’s licensors, respectively, retain ownership of all right, title, and interest (including copyright) in and to the Software, associated documentation, and all copies of the Software. Nothing in this Agreement constitutes a transfer or conveyance of any right, title, or interest in the Software or associated documentation, or a sale of the Software, associated documentation, or copies of the Software.

8. Warranty, Limitation of Liability, Disclaimer of Warranty. The warranty applicable to the Software shall be as set forth in the warranty statementthat accompanies theSoftware(the “Warranty Statement”). Nothingin this Agreementshall give riseto any obligation tosupport the Software. Support services may be purchased separately. Any such support shall be governed by a separate, written support services agreement. TO THE MAXIMUM EXTENT PERMITTED BY LAW, JUNIPER SHALL NOT BE LIABLE FOR ANY LOST PROFITS, LOSS OF DATA, OR COSTSOR PROCUREMENTOF SUBSTITUTE GOODSOR SERVICES,OR FORANY SPECIAL, INDIRECT,OR CONSEQUENTIALDAMAGES ARISING OUTOF THIS AGREEMENT,THE SOFTWARE, ORANY JUNIPEROR JUNIPER-SUPPLIED SOFTWARE. INNO EVENT SHALLJUNIPER BE LIABLE FOR DAMAGES ARISING FROM UNAUTHORIZED OR IMPROPER USE OF ANY JUNIPER OR JUNIPER-SUPPLIED SOFTWARE. EXCEPT AS EXPRESSLY PROVIDED IN THE WARRANTY STATEMENT TO THE EXTENT PERMITTED BY LAW, JUNIPER DISCLAIMS ANY AND ALL WARRANTIES IN AND TO THE SOFTWARE (WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE), INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NONINFRINGEMENT. IN NO EVENT DOES JUNIPER WARRANT THAT THE SOFTWARE, OR ANY EQUIPMENT OR NETWORK RUNNING THE SOFTWARE, WILL OPERATE WITHOUT ERROR OR INTERRUPTION, OR WILL BE FREE OF VULNERABILITY TO INTRUSION OR ATTACK. In no event shall Juniper’s or its suppliers’ or licensors’ liability to Customer, whether in contract, tort (including negligence), breach of warranty, or otherwise, exceed the price paid by Customer for the Software that gave rise to the claim, or if the Software is embedded in another Juniper product, the price paid by Customer for such other product. Customer acknowledges and agrees that Juniper has set its prices and entered into this Agreement in reliance upon the disclaimers of warranty and the limitations of liability set forth herein, that the same reflect an allocation of risk between the Parties (including the risk that a contract remedy may fail of its essential purpose and cause consequential loss), and that the same form an essential basis of the bargain between the Parties.

9. Termination. Any breach of this Agreement or failure by Customer to pay any applicable fees due shall result in automatic termination of the license granted herein. Upon such termination, Customer shall destroy or return to Juniper all copies of the Software and related documentation in Customer’s possession or control.

10. Taxes. All license fees payable under this agreement are exclusive of tax. Customer shall be responsible for paying Taxes arising from the purchase of the license, or importation or use of the Software. If applicable, valid exemption documentation for each taxing jurisdiction shall be provided to Juniper prior to invoicing, and Customer shall promptly notify Juniper if their exemption is revoked or modified. All payments made by Customer shall be net of any applicable withholding tax. Customer will provide reasonable assistance to Juniper in connection with such withholding taxes by promptly: providing Juniper with valid tax receipts and other required documentation showing Customer’s payment of any withholding taxes; completing appropriate applications that would reduce the amount of withholding tax to be paid; and notifying and assisting Juniper in any audit or tax proceeding related to transactions hereunder. Customer shall comply with all applicable tax laws and regulations, and Customer will promptly pay or reimburse Juniper for all costs and damages related to any liability incurred by Juniper as a result of Customer’s non-compliance or delay with its responsibilities herein. Customer’s obligations under this Section shall survive termination or expiration of this Agreement.

11. Export. Customer agrees to comply with all applicable export laws and restrictions and regulations of any United States and any applicable foreign agency or authority, and not to export or re-export the Software or any direct product thereof in violation of any such restrictions, laws or regulations, or without all necessary approvals. Customer shall be liable for any such violations. The version of the Software supplied to Customer may contain encryption or other capabilities restricting Customer’s ability to export the Software without an export license.

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12. Commercial Computer Software. The Software is “commercial computer software” and is provided with restricted rights. Use, duplication, or disclosure by the United States government is subject to restrictions set forth in this Agreement and as provided in DFARS

227.7201 through 227.7202-4, FAR 12.212, FAR 27.405(b)(2), FAR 52.227-19, or FAR 52.227-14(ALT III) as applicable.

13. Interface Information. To the extent required by applicable law, and at Customer's written request, Juniper shall provide Customer with the interface information needed to achieve interoperability between the Software and another independently created program, on payment of applicable fee, if any. Customer shall observe strict obligations of confidentiality with respect to such information and shall use such information in compliance with any applicable terms and conditions upon which Juniper makes such information available.

14. Third Party Software. Any licensor of Juniper whose software is embedded inthe Software and any supplier of Juniper whose products or technology are embedded in (or services are accessed by) the Software shall be a third party beneficiary with respect to this Agreement, and such licensor or vendor shall have the right toenforce this Agreement in its own name as if it were Juniper. In addition, certain third party software may be provided with the Software and is subject to the accompanying license(s), if any, of its respective owner(s). To the extent portions of the Software are distributed under and subject to open source licenses obligating Juniper to make the source code for such portions publicly available (such as the GNU General Public License (“GPL”) or the GNU Library General Public License (“LGPL”)), Juniper will make such source code portions (including Juniper modifications, as appropriate) available upon request for a period of up to three years from the date of distribution. Such request can be made in writing to Juniper Networks, Inc., 1194 N. Mathilda Ave., Sunnyvale, CA 94089, ATTN: General Counsel. You may obtain a copy of the GPL at http://www.gnu.org/licenses/gpl.html, and a copy of the LGPL

at http://www.gnu.org/licenses/lgpl.html .

15. Miscellaneous. This Agreement shall be governed by the laws of the State of California without reference to its conflicts of laws principles. The provisions of the U.N. Convention for the International Sale of Goods shall not apply to this Agreement. For any disputes arising under this Agreement, the Parties hereby consent to the personal and exclusive jurisdiction of, and venue in, the state and federal courts within Santa Clara County, California. This Agreement constitutes the entire and sole agreement between Juniper and the Customer with respect to the Software, and supersedes all prior and contemporaneous agreements relating to the Software, whether oral or written (including any inconsistent terms contained in a purchase order), except that the terms of a separate written agreement executed by an authorized Juniper representative and Customer shall govern to the extent such terms are inconsistent or conflict with terms contained herein. No modification to this Agreement nor any waiver of any rights hereunder shall be effective unless expressly assented to in writing by the party to be charged. If any portion of this Agreement is held invalid, the Parties agree that such invalidity shall not affect the validity of the remainder of this Agreement. This Agreement and associated documentation has been written in the English language, and the Parties agree that the English version will govern. (For Canada: Les parties aux présentés confirment leur volonté que cette convention de même que tous les documents y compris tout avis qui s'y rattaché, soient redigés en langue anglaise. (Translation: The parties confirm that this Agreement and all related documentation is and will be in the English language)).

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Table of Contents

About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii

Junos OS Documentation and Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii

Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii

Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv

Documentation Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv

Documentation Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv

Requesting Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvi

Self-Help Online Tools and Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvi

Opening a Case with JTAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxvii

Part 1 Overview of the M120 Multiservice Edge Router

Chapter 1 Overview of the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

M120 Router Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chapter 2 M120 Hardware Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

M120 Component Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

M120 Router Chassis Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

M120 Midplane Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

M120 Flexible PIC Concentrators (FPCs) Overview . . . . . . . . . . . . . . . . . . . . . . . . . 9

FPC Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

FPC Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

FPC Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

M120 Compact FPCs (CFPCs) Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

CFPC Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

CFPC Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

M120 FPCs and CFPCs Supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

M120 PICs Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

M120 Forwarding Engine Boards (FEBs) Overview . . . . . . . . . . . . . . . . . . . . . . . . . 16

M120 Forwarding Engine Boards (FEBs) Description . . . . . . . . . . . . . . . . . . . . 16

FEB Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

M120 Forwarding Engine Boards (FEBs) LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 17

M120 Host Subsystem Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

M120 Routing Engine Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

M120 Routing Engine Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Routing Engine Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Routing Engine Boot Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

M120 Routing Engine LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

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M120 Multiservice Edge Router Hardware Guide

M120 Control Board (CB) Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

M120 Control Board (CB) Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

M120 Control Board (CB) LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

M120 Craft Interface Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

M120 Craft Interface Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Alarm LEDs and Alarm Cutoff/Lamp Test Button on the M120 Craft

Routing Engine Interface Ports and Status Indicators on the M120 Craft

External Clock Interface Ports on the M120 Craft Interface . . . . . . . . . . . . . . . 25

Host Subsystem LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . 26

FEB LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

FPC LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Power Supply LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . 28

Alarm Relay Contacts on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . 28

M120 Power Supplies Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

M120 Power Supplies Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

M120 AC Power Supply Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

M120 AC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

M120 DC Power Supply Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

M120 DC Power Supply LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

M120 Cooling System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

M120 Cable Management System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

CB Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Part 2 Setting Up the M120 Router

Chapter 3 Preparing the Site for M120 Router Installation . . . . . . . . . . . . . . . . . . . . . . . . 37

M120 Site Preparation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

M120 Cabinet Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

M120 Cabinet Size and Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . 38

M120 Cabinet Airflow Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

M120 Rack Mounting Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

M120 Clearance Requirements for Airflow and Hardware Maintenance . . . . . . . . 41

Chapter 4 Unpacking the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

M120 Router Installation Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Tools and Parts Required to Unpack the M120 Router . . . . . . . . . . . . . . . . . . . . . . 44

Unpacking the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Verifying M120 Parts Received . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Chapter 5 Installing the M120 Router Mounting Hardware . . . . . . . . . . . . . . . . . . . . . . . 49

Installing the Mounting Hardware for a Front-Mount Four-Post Rack or

Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Installing the Mounting Hardware for a Front-Mount Open-Frame Rack . . . . . . . 51

Installing the Mounting Hardware for a Center-Mount Open-Frame Rack . . . . . . 53

Chapter 6 Installing the M120 Router with a Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Tools Required to Install the M120 Router Using a Mechanical Lift . . . . . . . . . . . . 55

Installing the M120 Router Using a Mechanical Lift . . . . . . . . . . . . . . . . . . . . . . . . 55

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Table of Contents

Chapter 7 Installing the M120 Router Without a Mechanical Lift . . . . . . . . . . . . . . . . . . 59

Tools and Parts Required to Install the M120 Router Without a Mechanical

Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Removing Components from the Chassis Before Installing the M120 Router

Without a Mechanical Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Removing the Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Removing FEBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Removing CBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Removing a Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Removing the Cable Management System . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Removing FPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Removing a CFPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Installing the M120 Router Without Using a Mechanical Lift . . . . . . . . . . . . . . . . . 69

Reinstalling Components in the Chassis After Installing the M120 Router Without

a Mechanical Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Reinstalling CBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Reinstalling the FEBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Reinstalling the Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Reinstalling FPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Reinstalling a CFPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Reinstalling the Fan Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Reinstalling the Cable Management System . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Chapter 8 Grounding the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Connecting the Grounding Cable to the M120 Router . . . . . . . . . . . . . . . . . . . . . . 79

Chapter 9 Connecting the M120 Router to External Devices . . . . . . . . . . . . . . . . . . . . . . 81

Tools and Parts Required to Connect the M120 Router . . . . . . . . . . . . . . . . . . . . . . 81

Connecting the M120 Router to Management and Alarm Devices . . . . . . . . . . . . . 81

Connecting the M120 Router to a Management Console or Auxiliary

Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Connecting the M120 Router to a Network for In-Band Management . . . . . . 84

Connecting the M120 Router to an External Alarm-Reporting Device . . . . . . 85

Connecting PIC Cables to the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Chapter 10 Providing Power to the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Connecting Power to an AC-Powered M120 Router . . . . . . . . . . . . . . . . . . . . . . . . 89

Connecting Power to a DC-Powered M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . 91

Powering On the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Powering Off the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Chapter 11 Configuring Junos OS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Initially Configuring Junos OS on the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . 95

Page 10

M120 Multiservice Edge Router Hardware Guide

Part 3 Hardware Maintenance, Troubleshooting, and Replacement

Procedures

Chapter 12 Maintaining M120 Router Hardware Components . . . . . . . . . . . . . . . . . . . . . 101

Tools and Parts Required to Maintain M120 Hardware Components . . . . . . . . . . 101

Routine Maintenance Procedures on the M120 Router . . . . . . . . . . . . . . . . . . . . . 101

Maintaining the M120 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Maintaining the M120 Fan Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Maintaining the M120 Host Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Maintaining M120 FPCs and CFPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Holding an M120 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Storing an M120 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Maintaining M120 PICs and PIC Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Maintaining the M120 FEBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Maintaining the M120 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Chapter 13 Troubleshooting M120 Hardware Components . . . . . . . . . . . . . . . . . . . . . . . 117

Overview of Troubleshooting Resources for the M120 Router . . . . . . . . . . . . . . . . 117

Troubleshooting Using the Command-Line Interface . . . . . . . . . . . . . . . . . . . 117

Troubleshooting Using the Chassis and Interface Alarm Messages . . . . . . . . 118

Troubleshooting Using the Juniper Networks Technical Assistance

M120 LED Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Craft Interface LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Component LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Troubleshooting the M120 Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Troubleshooting M120 FPCs and CFPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Troubleshooting M120 PICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Troubleshooting M120 FEBs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Troubleshooting an M120 FEB When a Chassis Alarm Is Lit Upon Initial Startup

or Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Troubleshooting the M120 Power System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Chapter 14 Replacing M120 Hardware Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

M120 Field-Replaceable Units (FRUs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Tools and Parts Required to Replace M120 Components . . . . . . . . . . . . . . . . . . . 128

Replacing the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Removing the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Installing the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Replacing Connections to M120 Routing Engine Interface Ports . . . . . . . . . . . . . 132

Replacing the Management Ethernet Cable on the M120 Routing Engine . . 132

Replacing the Console or Auxiliary Cable on the M120 Routing Engine . . . . . 133

Center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Page 11

Table of Contents

Replacing Alarm Relay Wires on the M120 Craft Interface . . . . . . . . . . . . . . . 133

Replacing M120 Cooling System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Replacing an M120 Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Removing an M120 Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Installing an M120 Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Replacing an M120 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Removing the M120 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Installing the M120 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Replacing M120 Host Subsystem Components . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Taking the M120 Host Subsystem Offline . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Replacing an M120 CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Removing an M120 CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Installing an M120 CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Replacing a DIMM Module in M120 Routing Engines . . . . . . . . . . . . . . . . . . . 145

Removing a M120 DIMM Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Installing a M120 DIMM Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Replacing an M120 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Removing an M120 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Installing an M120 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Replacing Packet Forwarding Engine Components . . . . . . . . . . . . . . . . . . . . . . . 149

Replacing an M120 FEB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Removing an M120 FEB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Installing an M120 FEB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

Replacing an M120 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Removing an M120 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Installing an M120 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Replacing an M120 CFPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

Removing an M120 CFPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

Installing an M120 CFPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Replacing an M120 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Removing an M120 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161

Installing an M120 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Replacing an M120 PIC Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Removing an M120 PIC Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Installing an M120 PIC Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Replacing an SFP or XFP Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

Removing an SFP or XFP Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . 168

Installing an SFP or XFP Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Replacing an M120 XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Removing an M120 XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Installing an M120 XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

Page 12

M120 Multiservice Edge Router Hardware Guide

Replacing M120 Power System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Replacing an M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Replacing an M120 DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Replacing an M120 AC Power Supply Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . 182

Replacing an M120 DC Power Supply Cable . . . . . . . . . . . . . . . . . . . . . . . . . . 183

Part 4 Appendixes

Appendix A Safety and Regulatory Compliance Information for the M120 Router . . . . 187

Definition of Safety Warning Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

General Safety Guidelines for M Series, MX Series, and T Series Routers . . . . . . 189

General Safety Warnings for M Series, MX Series, and T Series Routers . . . . . . . 190

Qualified Personnel Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

Restricted Access Area Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Preventing Electrostatic Discharge Damage to an M120 Router . . . . . . . . . . . . . . 192

Fire Safety Requirements for M Series, MX Series, and T Series Routers . . . . . . . 193

General Fire Safety Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Fire Suppression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Fire Suppression Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

M120 Router Installation Safety Guidelines and Warnings . . . . . . . . . . . . . . . . . . 194

M120 Chassis Lifting Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

Installation Safety Warnings for M Series, MX Series, and T Series

Laser and LED Safety Guidelines and Warnings for the M120 Router . . . . . . . . . 200

General Laser Safety Guidelines for the M120 Router . . . . . . . . . . . . . . . . . 200

M120 Laser and LED Safety Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

Maintenance and Operational Safety Warnings for M Series, MX Series, and T

Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

Battery Handling Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203

Jewelry Removal Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204

Lightning Activity Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

Operating Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

Product Disposal Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

Removing an M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Installing an M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Removing an M120 DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Installing an M120 DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

Installation Instructions Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

Rack-Mounting Requirements and Warnings . . . . . . . . . . . . . . . . . . . . . 196

Ramp Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

Class 1 Laser Product Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

Class 1 LED Product Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

Laser Beam Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

Radiation from Open Port Apertures Warning . . . . . . . . . . . . . . . . . . . . 202

Page 13

Table of Contents

General Electrical Safety Guidelines and Warnings Electrical Codes for the M120

Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208

General Electrical Safety Warnings for M Series, MX Series, and T Series

Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208

Grounded Equipment Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

Grounding Requirements and Warning . . . . . . . . . . . . . . . . . . . . . . . . . 209

Midplane Energy Hazard Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210

Multiple Power Supplies Disconnection Warning . . . . . . . . . . . . . . . . . . 210

Power Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

TN Power Warning for the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

In Case of an Electrical Accident . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213

AC Power Electrical Safety Guidelines for the M120 Router . . . . . . . . . . . . . . 213

Japanese AC Power Cord Warning for M Series and MX Series Routers . . . . 214

DC Power Electrical Safety Warnings for M Series, MX Series, and T Series

Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214

DC Power Copper Conductors Warning . . . . . . . . . . . . . . . . . . . . . . . . . . 214

DC Power Disconnection Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

DC Power Wiring Terminations Warning . . . . . . . . . . . . . . . . . . . . . . . . . 216

DC Power Electrical Safety Guidelines for the M120 . . . . . . . . . . . . . . . . . . . . 217

Agency Approvals and Compliance Statements for the M120 Router . . . . . . . . . 218

Agency Approvals for M120 Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

Compliance Statements for NEBS for the M120 Router . . . . . . . . . . . . . . . . 220

Compliance Statements for EMC Requirements for the M120 Router

(European Community) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Compliance Statements for EMC Requirements for M Series, MX Series,

and T Series Routers (United States) . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Compliance Statements for EMC Requirements for M Series, MX Series,

and T Series Routers (Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

Compliance Statements for EMC Requirements for M Series, MX Series,

and T Series Routers (Canada) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

Compliance Statements for Environmental Requirements for M Series, MX

Series, and T Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

Compliance Statements for Acoustic Noise for the M120 Router . . . . . . . . . 223

Appendix B M120 Router Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

M120 Router Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

Appendix C M120 Router Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 227

M120 Router Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

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M120 Multiservice Edge Router Hardware Guide

Appendix D Power Guidelines, Requirements, and Specifications for the M120

Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229

M120 Chassis Grounding Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229

M120 Router AC Power Specifications and Requirements . . . . . . . . . . . . . . . . . . 230

Electrical Specifications for the M120 AC Power Supply . . . . . . . . . . . . . . . . 230

M120 AC Power, Connection, and Power Cord Specifications . . . . . . . . . . . . 231

M120 Router DC Power Specifications and Requirements . . . . . . . . . . . . . . . . . . 233

Electrical Specifications for the M120 DC Power Supply . . . . . . . . . . . . . . . . 233

M120 DC Power, Connection, and Cable Specifications . . . . . . . . . . . . . . . . 234

Site Electrical Wiring Guidelines for M Series, MX Series, and T Series

Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

M120 Router Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

Appendix E Cable and Wire Guidelines and Specifications for the M120 Router . . . . . 241

Fiber-Optic Specifications and Guidelines for the M120 Router . . . . . . . . . . . . . . 241

Fiber-Optic and Network Cable Specifications for the M120 Router . . . . . . . 241

Signal Loss in Multimode and Single-Mode Fiber-Optic Cable for the M120

Attenuation in M120 SONET/SDH PICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242

M120 Attenuation and Dispersion in Fiber-Optic Cable . . . . . . . . . . . . . . . . 243

Calculating Power Budget for Fiber-Optic Cable for M Series, MX Series,

Calculating Power Margin for Fiber-Optic Cable for M Series, MX Series, and

Routing Engine Interface Cable and Wire Specifications for the M120 Router . . 246

Appendix F M120 Cable Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

RJ-45 Connector Pinouts for the M120 Routing Engine ETHERNET Port . . . . . . . 247

RJ-45 Connector Pinouts for the Routing Engine AUX and CONSOLE Ports . . . 248

RJ-45 Connector Pinouts for the External Clock Ports . . . . . . . . . . . . . . . . . . . . . 248

RJ-48 Cable Pinouts for E1 and T1 PICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

M120 X.21 and V.35 Cable Pinouts for EIA-530 PIC . . . . . . . . . . . . . . . . . . . . . . . . 252

M120 Fast Ethernet PIC 48-Port Cable Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . 254

Appendix G Contacting Customer Support and Returning M120 Hardware . . . . . . . . . 257

Locating M120 Component Serial Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257

Displaying M120 Router Components and Serial Numbers . . . . . . . . . . . . . . 257

M120 Chassis Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259

M120 CB Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259

M120 FEB Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259

M120 FPC Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260

M120 CFPC Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260

M120 PIC Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261

M120 Power Supply Serial Number Labels . . . . . . . . . . . . . . . . . . . . . . . . . . 262

M120 Routing Engine Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . 263

Contacting Customer Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263

Returning a Hardware Component to Juniper Networks, Inc. . . . . . . . . . . . . . . . 264

Tools and Parts Required to Remove Components from an M120 Router . . . . . 265

Packing the M120 Router for Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265

Guidelines for Packing M120 Components for Shipment . . . . . . . . . . . . . . . . . . . 267

Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242

and T Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244

T Series Routers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244

Page 15

Part 5 Index

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271

Table of Contents

Page 16

M120 Multiservice Edge Router Hardware Guide

Page 17

List of Figures

Part 1 Overview of the M120 Multiservice Edge Router

Chapter 2 M120 Hardware Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 1: Front View of a Fully Configured M120 Router Chassis . . . . . . . . . . . . . . . . 7

Figure 2: Rear View of a Fully Configured AC-Powered M120 Router Chassis . . . . . 7

Figure 3: Rear View of a Fully Configured DC-Powered M120 Router Chassis . . . . . 8

Figure 4: M120 Midplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 5: FPC and CFPCs Installed in an M120 Router Chassis . . . . . . . . . . . . . . . . 10

Figure 6: FPC1, FPC2, and FPC3 for the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 7: FPC and CFPCs Installed in an M120 Router Chassis . . . . . . . . . . . . . . . . 13

Figure 8: Ethernet 10GBASE XFP CFPC for the M120 Router . . . . . . . . . . . . . . . . . 13

Figure 9: M120 FEB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 10: M120 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 11: USB Memory Device in an M120 Routing Engine . . . . . . . . . . . . . . . . . . . 20

Figure 12: M120 CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 13: Front Panel of the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 14: M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 15: M120 DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 16: Airflow Through the M120 Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 17: M120 Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 18: M120 Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 19: M120 Cable Management System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Part 2 Setting Up the M120 Router

Chapter 3 Preparing the Site for M120 Router Installation . . . . . . . . . . . . . . . . . . . . . . . . 37

Figure 20: Typical Open-Frame Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Figure 21: M120 Chassis Dimensions and Clearance Requirements . . . . . . . . . . . . 42

Chapter 4 Unpacking the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Figure 22: Contents of the M120 Shipping Container . . . . . . . . . . . . . . . . . . . . . . . 45

Chapter 5 Installing the M120 Router Mounting Hardware . . . . . . . . . . . . . . . . . . . . . . . 49

Figure 23: Installing the M120 Mounting Hardware for a Four-Post Rack or

Figure 24: Installing the M120 Mounting Hardware for an Open-Frame Rack . . . . 53

Chapter 6 Installing the M120 Router with a Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Figure 25: Installing the M120 Router in the Rack . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Chapter 7 Installing the M120 Router Without a Mechanical Lift . . . . . . . . . . . . . . . . . . 59

Figure 26: Removing a Power Supply Before Installing the M120 Router . . . . . . . . 61

Figure 27: Removing a FEB Before Installing the M120 Router . . . . . . . . . . . . . . . . 62

Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Page 18

M120 Multiservice Edge Router Hardware Guide

Figure 28: Removing a CB Before Installing the M120 Router . . . . . . . . . . . . . . . . 63

Figure 29: Removing an Upper Front Fan Tray Before Installing the M120

Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Figure 30: Removing a Lower Rear Fan Tray Before Installing the M120

Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Figure 31: Removing the Cable Management System Before Installing the M120

Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Figure 32: Removing an FPC Before Installing the M120 Router . . . . . . . . . . . . . . . 67

Figure 33: Removing a CFPC Before Installing the M120 Router . . . . . . . . . . . . . . 68

Figure 34: Installing the M120 Router in the Rack . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Figure 35: Reinstalling a CB After Installing the M120 Router . . . . . . . . . . . . . . . . . 72

Figure 36: Reinstalling a FEB After Installing the M120 Router . . . . . . . . . . . . . . . . 73

Figure 37: Reinstalling a Power Supply After Installing the M120 Router . . . . . . . . 74

Figure 38: Reinstalling an FPC After Installing the M120 Router . . . . . . . . . . . . . . . 75

Figure 39: Reinstalling a CFPC After Installing the M120 Router . . . . . . . . . . . . . . 76

Figure 40: Reinstalling a Front Fan Tray After Installing the M120 Router . . . . . . . 77

Chapter 8 Grounding the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Figure 41: Connecting the Grounding Cable to the M120 Router . . . . . . . . . . . . . . 80

Chapter 9 Connecting the M120 Router to External Devices . . . . . . . . . . . . . . . . . . . . . . 81

Figure 42: M120 Routing Engine Management Ports and Alarm Relay

Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Figure 43: M120 Console and Auxiliary Serial Port Connector . . . . . . . . . . . . . . . . 83

Figure 44: M120 Routing Engine Management Ports and Alarm Relay

Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Figure 45: M120 Routing Engine Ethernet Cable Connector . . . . . . . . . . . . . . . . . . 85

Figure 46: M120 Routing Engine External Device Ports . . . . . . . . . . . . . . . . . . . . . 85

Figure 47: M120 Routing Engine Alarm Relay Contacts . . . . . . . . . . . . . . . . . . . . . 86

Figure 48: Attaching a Cable to an M120 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Chapter 10 Providing Power to the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Figure 49: Connecting AC Power to the M120 Router . . . . . . . . . . . . . . . . . . . . . . . 90

Figure 50: Connecting DC Power to the M120 Router . . . . . . . . . . . . . . . . . . . . . . . 91

Part 3 Hardware Maintenance, Troubleshooting, and Replacement

Procedures

Chapter 12 Maintaining M120 Router Hardware Components . . . . . . . . . . . . . . . . . . . . . 101

Figure 51: Holding an M120 FPC Vertically . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Figure 52: Holding an M120 FPC Horizontally . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Figure 53: Do Not Grasp the Connector Edge . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Figure 54: Do Not Carry an FPC with Only One Hand . . . . . . . . . . . . . . . . . . . . . . 110

Figure 55: Do Not Rest the FPC on an Edge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Chapter 14 Replacing M120 Hardware Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Figure 56: Removing the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Figure 57: Installing the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Figure 58: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . . 132

Figure 59: M120 Ethernet Cable Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Figure 60: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . 132

Page 19

List of Figures

Figure 61: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . . 133

Figure 62: M120 Routing Engine Interface Ports and Alarm Relay Contacts . . . . 134

Figure 63: Removing an M120 Upper Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . 135

Figure 64: Removing an M120 Lower Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . 136

Figure 65: Installing an M120 Upper Front Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . 137

Figure 66: Installing an M120 Lower Rear Fan Tray . . . . . . . . . . . . . . . . . . . . . . . . 137

Figure 67: Removing the M120 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Figure 68: Installing the M120 Front Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Figure 69: Removing an M120 CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144

Figure 70: Installing an M120 CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Figure 71: Installing the DIMM Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146

Figure 72: Removing an M120 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Figure 73: Installing an M120 Routing Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Figure 74: Removing an M120 FEB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150

Figure 75: Installing an M120 FEB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

Figure 76: Removing an M120 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Figure 77: Installing an M120 FPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

Figure 78: Connecting Fiber-Optic Cable to an M120 PIC . . . . . . . . . . . . . . . . . . . 157

Figure 79: Removing an M120 CFPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159

Figure 80: Installing an M120 CFPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

Figure 81: Removing an M120 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Figure 82: Installing an M120 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164

Figure 83: Connecting Fiber-Optic Cable to an M120 PIC . . . . . . . . . . . . . . . . . . . 167

Figure 84: Removing M120 SFPs or XFPs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Figure 85: Removing a M120 XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

Figure 86: Installing a M120 XENPAK Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Figure 87: Removing an M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Figure 88: Rear of the M120 Power Supply Showing Midplane Connector . . . . . . 175

Figure 89: Installing an M120 AC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Figure 90: Disconnecting Power Cables from the M120 DC Power Supply . . . . . 178

Figure 91: Removing an M120 DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Figure 92: Installing an M120 DC Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 181

Figure 93: Connecting Power Cables to the M120 DC Power Supply . . . . . . . . . . 182

Part 4 Appendixes

Appendix A Safety and Regulatory Compliance Information for the M120 Router . . . . 187

Figure 94: Placing a Component into an Electrostatic Bag . . . . . . . . . . . . . . . . . . 193

Appendix D Power Guidelines, Requirements, and Specifications for the M120

Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229

Figure 95: M120 DC Power and Grounding Cable Lug . . . . . . . . . . . . . . . . . . . . . 230

Figure 96: M120 AC Plug Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232

Figure 97: Typical DC Source Cabling to the M120 Router . . . . . . . . . . . . . . . . . . 235

Appendix F M120 Cable Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

Figure 98: M120 EIA-530 PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253

Figure 99: Fast Ethernet 48-port PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

Figure 100: VHDCI to RJ-21 Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

Appendix G Contacting Customer Support and Returning M120 Hardware . . . . . . . . . 257

Page 20

M120 Multiservice Edge Router Hardware Guide

Figure 101: Serial Number ID Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258

Figure 102: M120 Chassis Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . 259

Figure 103: M120 CB Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259

Figure 104: M120 FEB Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260

Figure 105: M120 FPC Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260

Figure 106: M120 Routing Engine Serial Number Label . . . . . . . . . . . . . . . . . . . . . 261

Figure 107: M120 PIC Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261

Figure 108: M120 AC Power Supply Serial Number Label . . . . . . . . . . . . . . . . . . . 262

Figure 109: M120 DC Power Supply Serial Number Label . . . . . . . . . . . . . . . . . . 262

Figure 110: M120 Routing Engine Serial Number Label . . . . . . . . . . . . . . . . . . . . . 263

Page 21

List of Tables

About the Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii

Table 1: Notice Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv

Table 2: Text and Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv

Part 1 Overview of the M120 Multiservice Edge Router

Chapter 2 M120 Hardware Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Table 3: FPCs Supported by the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 4: CFPCs Supported by the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 5: M120 FEB LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 6: M120 Routing Engine LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 7: M120 Control Board LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Table 8: M120 Alarm LEDs and Alarm Cutoff/Lamp Test Button . . . . . . . . . . . . . . 24

Table 9: External Clock LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . 26

Table 10: M120 Host Subsystem LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 11: FEB LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 12: M120 FPC LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 13: Power Supply LEDs on the M120 Craft Interface . . . . . . . . . . . . . . . . . . . 28

Table 14: M120 Power Supply LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Part 2 Setting Up the M120 Router

Chapter 3 Preparing the Site for M120 Router Installation . . . . . . . . . . . . . . . . . . . . . . . . 37

Table 15: M120 Site Preparation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Table 16: M120 Rack Requirements and Specifications . . . . . . . . . . . . . . . . . . . . . 39

Chapter 4 Unpacking the M120 Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Table 17: Parts List for a Fully Configured M120 Router . . . . . . . . . . . . . . . . . . . . . 46

Table 18: Accessory Box Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Chapter 5 Installing the M120 Router Mounting Hardware . . . . . . . . . . . . . . . . . . . . . . . 49

Table 19: Four-Post Rack or Cabinet Mounting Hole Locations for the M120

Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Table 20: Open-Frame Rack Mounting Hole Locations for the M120 Router . . . . . 52

Part 3 Hardware Maintenance, Troubleshooting, and Replacement

Procedures

Chapter 14 Replacing M120 Hardware Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Table 21: M120 Field-Replaceable Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Table 22: Tools and Parts Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

Table 23: Effect of Taking the M120 Host Subsystem Offline . . . . . . . . . . . . . . . . 141

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M120 Multiservice Edge Router Hardware Guide

Part 4 Appendixes

Appendix B M120 Router Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

Table 24: M120 Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225

Appendix C M120 Router Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 227

Table 25: M120 Router Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . 227

Appendix D Power Guidelines, Requirements, and Specifications for the M120

Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229

Table 26: AC Power Supply Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . 230

Table 27: AC Power Cord Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232

Table 28: DC Power Supply Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . 233

Table 29: M120 DC Power and Grounding Cable Specifications . . . . . . . . . . . . . 236

Table 30: Power System Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . 237

Table 31: AC Power Supply Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . 238

Table 32: DC Power Supply Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . 238

Table 33: Component Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

Appendix E Cable and Wire Guidelines and Specifications for the M120 Router . . . . . 241

Table 34: Estimated Values for Factors Causing Link Loss . . . . . . . . . . . . . . . . . . 245

Table 35: Routing Engine Interface Cable and Wire Specifications . . . . . . . . . . . 246

Appendix F M120 Cable Connector Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

Table 36: RJ-45 Connector Pinout for the Routing Engine ETHERNET Port . . . . 247

Table 37: RJ-45 Connector Pinout for the Routing Engine AUX and CONSOLE

Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248

Table 38: RJ-45 Connector Pinout for the External Interface Ports . . . . . . . . . . . 249

Table 39: RJ-48 Connector to RJ-48 Connector (Straight) Pinout for the

Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249

Table 40: RJ-48 Connector to RJ-48 Connector (Crossover) Pinout for the

Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

Table 41: RJ-48 Connector to DB-15 Connector (Straight) Pinout for the

Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

Table 42: RJ-48 Connector to DB-15 Connector (Crossover) Pinout for the

Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

Table 43: M120 DB-25 Connector to V.35 Connector Pinout . . . . . . . . . . . . . . . . 253

Table 44: DB-25 Connector to DB-15 (X.21) Connector Pinout . . . . . . . . . . . . . . 254

Table 45: RJ-21 Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255

Page 23

About the Documentation

•

Junos OS Documentation and Release Notes on page xxiii

•

Objectives on page xxiii

•

Audience on page xxiv

•

Documentation Conventions on page xxiv

•

Documentation Feedback on page xxv

•

Requesting Technical Support on page xxvi

Junos OS Documentation and Release Notes

For a list of related Junos OS documentation, see

http://www.juniper.net/techpubs/software/junos/ .

If the information in the latest release notes differs from the information in the documentation, follow the Junos OS Release Notes.

To obtain the most current version of all Juniper Networks®technical documentation, see the product documentation page on the Juniper Networks website at

http://www.juniper.net/techpubs/.

Objectives

This documentation describes hardware components, installation, basic configuration, and basic troubleshooting procedures for the Juniper Networks M120 Multiservice Edge Router. It explains how to prepare your site for router installation, unpack and install the hardware,power onthe router, perform initial software configuration, andperform routine maintenance. After completing the installation and basic configuration procedures covered in this documentation, see the Junos OS configuration guides for information about further Junos OS configuration.

NOTE: For additional information about Juniper Networks routers and the

Physical Interface Cards (PICs) they support—either corrections to or informationthat mighthave been omitted from this guide—see the hardware release notes at http://www.juniper.net/.

Page 24

M120 Multiservice Edge Router Hardware Guide

Audience

This documentation is designed for network administrators who are installing and maintaining a Juniper Networks router or preparing a site for router installation. To use the documentation, you need a broad understanding of networks in general, the Internet in particular, networking principles, and network configuration. Any detailed discussion of these concepts is beyond the scope of this hardware documentation.

Documentation Conventions

Table 1 on page xxiv defines the notice icons used in this guide.

Table 1: Notice Icons

DescriptionMeaningIcon

Indicates important features or instructions.Informational note

Table 2 on page xxiv defines the text and syntax conventions used in this guide.

Table 2: Text and Syntax Conventions

Represents text that you type.Bold text like this

Fixed-width text like this

Italic text like this

Represents output that appears on the terminal screen.

•

Introduces important new terms.

•

Identifies book names.

•

Identifies RFC and Internet draft titles.

Indicates a situation that might result in loss of data or hardware damage.Caution

Alerts you to the risk of personal injury or death.Warning

Alerts you to the risk of personal injury from a laser.Laser warning

ExamplesDescriptionConvention

To enter configuration mode, type the

configure command:

user@host> configure

user@host> show chassis alarms

No alarms currently active

•

A policy term is a named structure that defines match conditions and actions.

•

Junos System Basics Configuration Guide

•

RFC 1997, BGPCommunities Attribute

Page 25

Table 2: Text and Syntax Conventions (continued)

About the Documentation

ExamplesDescriptionConvention

Italic text like this

Text like this

| (pipe symbol)

# (pound sign)

[ ] (square brackets)

Indention and braces ( { } )

; (semicolon)

Represents variables (options for which you substitute a value) in commands or configuration statements.

Represents names of configuration statements, commands, files, and directories; IP addresses; configuration hierarchy levels; or labels on routing platform components.

Indicates a choice betweenthe mutually exclusivekeywords or variables on either side of the symbol. The set of choices is often enclosed in parentheses for clarity.

same lineas theconfiguration statement to which it applies.

Enclose a variable for which you can substitute one or more values.

Identify a level in the configuration hierarchy.

Identifies a leaf statement at a configuration hierarchy level.

Configure the machine’s domain name:

[edit] root@# set system domain-name

domain-name

•

To configure a stub area, include the

stub statement at the [edit protocols ospf area area-id] hierarchy level.

•

The console portis labeled CONSOLE.

stub <default-metric metric>;Enclose optional keywords or variables.< > (angle brackets)

broadcast | multicast

(string1 | string2 | string3)

rsvp { # Required for dynamic MPLS onlyIndicates a comment specified on the

community name members [ community-ids ]

[edit] routing-options {

static {

route default{

nexthop address; retain;

}

J-Web GUI Conventions

Bold text like this

> (bold right angle bracket)

Documentation Feedback

We encourage you to provide feedback, comments, and suggestions so that we can improve the documentation. You can send your comments to

techpubs-comments@juniper.net, or fill out the documentation feedback form at

Represents J-Web graphical user interface (GUI) items you click or select.

Separates levels in a hierarchy of J-Web selections.

•

In the Logical Interfaces box, select All Interfaces.

•

To cancel the configuration, click Cancel.

In the configuration editor hierarchy, select Protocols>Ospf.

Page 26

M120 Multiservice Edge Router Hardware Guide

https://www.juniper.net/cgi-bin/docbugreport/. If you are using e-mail, be sure to include

the following information with your comments:

•

Document or topic name

•

URL or page number

•

Software release version (if applicable)

Requesting Technical Support

Technical product support is available throughthe Juniper Networks Technical Assistance Center (JTAC). If you are a customer with an active J-Care or JNASC support contract, or are covered under warranty, and need post-sales technical support, you can access our tools and resources online or open a case with JTAC.

•

JTAC policies—For a complete understanding of our JTAC procedures and policies, review the JTAC User Guide located at

http://www.juniper.net/us/en/local/pdf/resource-guides/7100059-en.pdf .

•

Product warranties—For product warranty information, visit

http://www.juniper.net/support/warranty/ .

•

JTAC hours of operation—The JTAC centers have resources available 24 hours a day, 7 days a week, 365 days a year.

Self-Help Online Tools and Resources

For quick and easy problem resolution, Juniper Networks has designed an online self-service portal called the Customer Support Center (CSC) that provides you with the following features:

•

Find CSC offerings: http://www.juniper.net/customers/support/

•

Search for known bugs: http://www2.juniper.net/kb/

•

Find product documentation: http://www.juniper.net/techpubs/

•

Find solutions and answer questions using our Knowledge Base: http://kb.juniper.net/

•

Download the latest versions of software and review release notes:

http://www.juniper.net/customers/csc/software/

•

Search technical bulletins for relevant hardware and software notifications:

https://www.juniper.net/alerts/

•

Join and participate in the Juniper Networks Community Forum:

http://www.juniper.net/company/communities/

•

Open a case online in the CSC Case Management tool: http://www.juniper.net/cm/

To verify serviceentitlement by productserial number, useour Serial NumberEntitlement (SNE) Tool: https://tools.juniper.net/SerialNumberEntitlementSearch/

Page 27

Opening a Case with JTAC

You can open a case with JTAC on the Web or by telephone.

•

Use the Case Management tool in the CSC at http://www.juniper.net/cm/ .

•

Call 1-888-314-JTAC (1-888-314-5822 toll-free in the USA, Canada, and Mexico).

For international or direct-dial options in countries without toll-free numbers, see

http://www.juniper.net/support/requesting-support.html .

About the Documentation

Page 28

M120 Multiservice Edge Router Hardware Guide

Page 29

PART 1

Overview of the M120 Multiservice Edge Router

•

Overview of the M120 Router on page 3

•

M120 Hardware Components on page 5

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M120 Multiservice Edge Router Hardware Guide

Page 31

CHAPTER 1

Overview of the M120 Router

•

M120 Router Description on page 3

M120 Router Description

The M120 Multiservice Edge 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) and large enterprise customers. 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 provides multiple redundancy options and chassis configurations, enhanced ASIC features, and chassis and Packet Forwarding Engine (PFE) scaling. PFE routing functionality is performed by Forwarding Engine Boards (FEBs) which separate routing ASICs from Flexible PIC Concentrators(FPCs) to providehigh availability and redundancy of the forwarding engine.The routerutilizes the I-chip ASIC, whichsupports up to 32,000 logical interfaces depending on your configuration. Thebase chassis provides120 gigabits per second (Gbps) of midplane bandwidth between the interfaces and FEBs, and 144 Gbps, half duplex, of fabric bandwidth between the FEBs.

The router is a quarter-rack chassis that supports up to six FPCs. Four slots accept FPCs of Types 1, 2, and 3 and two slots accept Compact FPCs (CFPCs). Each FPC can be configured with a variety of network media types, altogether providing up to 130 physical interface ports per system. The CFPC slots are identical to the Type 1, 2, and 3 FPC slots, but feature a smaller form factor to provide higher density 10-Gigabit interfaces. The router height of 20.75 in. (52.71 cm) enablesstacked installation of four routers in a single floor-to-ceiling rack, for increased port density per unit of floor space. In a standalone configuration, the router's maximum aggregate throughput is 60 Gbps, full duplex.

The router architecture 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 OS to handle routing protocols,traffic engineering, policy, policing, monitoring, and configuration management. Forwarding operations in the router are performed by the Packet Forwarding Engine (PFE), which includes ASICs, designed by Juniper Networks contained on the FEBs. The redundant FEBsprovide route lookupand forwardingfunctions from the PICs and CFPCs with fast switchover timesand higherbandwidth PFEs provide supportfor larger numbers of PICs.

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M120 Multiservice Edge Router Hardware Guide

Documentation

• M120 Router Chassis Description on page 6

• M120 Router Physical Specifications on page 225

• M120 Router Environmental Specifications on page 227

• M120 Router Power Requirements on page 237

Page 33

CHAPTER 2

M120 Hardware Components

•

M120 Component Redundancy on page 5

•

M120 Router Chassis Description on page 6

•

M120 Midplane Description on page 8

•

M120 Flexible PIC Concentrators (FPCs) Overview on page 9

•

M120 Compact FPCs (CFPCs) Overview on page 12

•

M120 FPCs and CFPCs Supported on page 14

•

M120 PICs Description on page 15

•

M120 Forwarding Engine Boards (FEBs) Overview on page 16

•

M120 Host Subsystem Description on page 18

•

M120 Routing Engine Overview on page 18

•

M120 Control Board (CB) Overview on page 21

•

M120 Craft Interface Overview on page 23

•

M120 Power Supplies Overview on page 28

•

M120 Cooling System Description on page 32

•

M120 Cable Management System Description on page 34

M120 Component Redundancy

A fully configured router is designed so that no single point of failure can cause the entire system to fail. Only a fully configured router provides complete redundancy. All other configurations provide partial redundancy. The following major hardware components are redundant:

•

Host subsystem—The host subsystem requires aRouting Engine to be installed directly into the CB. The router can have one or two host subsystems. If two host subsystems are installed, one functions as the master and the other functions as the backup. If the master host subsystem (or either of its components) fails, the backup can take over as the master.

•

Power supplies—A router with twoAC powersupplies or two DC power supplies is fully power redundant. In both AC and DC configurations, the power supplies share the load almost evenly.

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M120 Multiservice Edge Router Hardware Guide

•

Cooling system—Thecooling system has redundant components, which are controlled by the host subsystem. If one of the fans fails, the host subsystem increases the speed of the remaining fans to provide sufficient cooling for the router indefinitely.

CAUTION: Mixing AC and DC power supplies is not supported. The first

powersupply poweredon will electricallydisable the second power supply without damaging any components in the system.

Documentation

M120 Router Chassis Description on page 6•

• M120 Host Subsystem Description on page 18

• M120 AC Power Supply Description on page 29

• M120 DC Power Supply Description on page 31

• M120 Cooling System Description on page 32

M120 Router Chassis Description

The router chassis is a rigid sheet metal structure that houses all the other router components (see Figure 1 on page 7, Figure 2 on page 7, and Figure 3 on page 8). The chassis measures 20.75 in. (52.71 cm) high, 17.43 in. (44.3 cm) wide, and 24.3 in. (61.7 cm) deep (from the front-mounting flanges to the rear of the chassis). The chassis installs in standard 800-mm (or larger) enclosed cabinets, 19-in. equipment racks, or telco open-frame racks. Up to four routers can be installed in one standard (48-U) rack if the rack can handle their combined weight, which can be greater than 900 lb (408.4 kg).

The chassis includes three electrostatic discharge points (banana plug receptacle). Two are located in the front of the chassis and one in the rear of the chassis.

CAUTION: Before removing or installing components of a router, attach an

ESD strap to an ESD point and place the other end of the strap around your bare wrist. Failure to use an ESD strap can result in damage to the router.

WARNING: The router must be connected to earth ground during normal operation.

Page 35

Chapter 2: M120 Hardware Components

Figure 1: Front View of a Fully Configured M120 Router Chassis

Figure 2: Rear View of a Fully Configured AC-Powered M120 Router Chassis

Page 36

M120 Multiservice Edge Router Hardware Guide

Figure 3: Rear View of a Fully Configured DC-Powered M120 Router Chassis

For chassis serial number information , see “Displaying M120 Router Components and Serial Numbers” on page 257.

Documentation

M120 Router Physical Specifications on page 225•

• General Safety Warnings for M Series, MX Series, and T Series Routers on page 190

• General Safety Guidelines for M Series, MX Series, and T Series Routers on page 189

• M120 Chassis Lifting Guidelines on page 195

M120 Midplane Description

The midplane is located in the center of the chassis and forms the rear of the FPC card cage (see Figure 4 on page 9). The FPCs install into the midplane from the front of the chassis, and the FEBs, Routing Engines, powersupplies, andCBs installinto themidplane from the rear of the chassis. The power supplies and cooling system components also connect to the midplane.

The midplane performs the following major functions:

•

Data path—Data packets are transferred across the midplane between an FPC and its associated FEB, and between the FEBs via the fabric ASICs on the CB.

•

Power distribution—The router power supplies are connected to the midplane, which distributes power to all the router components.

Page 37

Chapter 2: M120 Hardware Components

•

Signal path—Themidplane provides the signal path to the FPCs, FEBs, Routing Engines, CB, and other system components for monitoring and control of the system.

Figure 4: M120 Midplane

For chassis serial number information , see “Displaying M120 Router Components and Serial Numbers” on page 257.

Documentation

M120 Router Description on page 3•

• M120 Router Chassis Description on page 6

M120 Flexible PIC Concentrators (FPCs) Overview

•

FPC Description on page 9

•

FPC Components on page 11

•

FPC Terminology on page 11

FPC Description

The Flexible PIC Concentrators (FPCs) provide the infrastructure to power and control PICs and to translate packets to and from each PIC into a standard interface that the FEB processes.

Each Packet Forwarding Engine receives incoming packets from the PICs installed on the FPC and forwards them through the switch planes to the appropriate destination FPC and port. Each FPC contains data memory, which is managed by the Queuing and Memory Interface ASICs, and either one or two Packet Forwarding Engines.

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M120 Multiservice Edge Router Hardware Guide

Each FPC contains a translator, a crossbar connection to the FEBs, power subsystem, and the physical PIC connectors. The assembly contains a translation component that convertsbetween the midplane signals and thesignals required bythe typesof supported PICs. Thetranslatorfully terminates the PIC side connection,providing local flowcontrol, buffering, and electrical conversion.

The FPCs interface with the following router system components: the PEMs, CBs, FEBs, and PICs.

The FPC slots on the router allow four PICs in Type 1 or Type 2 FPCs and one PIC in a Type 3 FPC to share power circuits and a CPU. Up to four FPCs install vertically in the front of the router (see Figure 5 on page 10). The FPC slots are numbered left to right from FPC2 to FPC5. Depending on the FPC type, an FPC has either one or four slots into which a PIC can be installed. An FPC can be installed into any FPC slot on the router, regardless of which PICs it contains.

If a slot is not occupied by an FPC, an FPC blank panel must be installed to shield the empty slot and to allow cooling air to circulate properly through the router.

FPCs are hot-removable and hot-insertable, as described in “M120 Field-Replaceable Units (FRUs)” on page 127. When you install an FPC into a functioning router, the Routing Engine downloads the FPC software, the FPC runs its diagnostics, and the PICs housed on the FPC, are enabled. Forwarding on other FPC slots continues uninterrupted during this process.

Figure 5: FPC and CFPCs Installed in an M120 Router Chassis

Page 39

Faceplates on FPCs for the M120 router are labeled with the FPC type (FPC1, FPC2, or

FPC3). The faceplates on the CFPCs are labeled with their CFPC type, Ethernet 10GBASE XFP or OC192.

Figure 6 on page 11 shows the three types of FPCs that the M120 router supports.

Figure 6: FPC1, FPC2, and FPC3 for the M120 Router

Chapter 2: M120 Hardware Components

FPC Components

FPC Terminology

Each FPC consists of the following components:

•

FPC card carrier, which includes the PIC slots.

•

HSL2 conversion FPGA, abridge between the HSL2 interface and the interface required by the types of supported PICs (either BD8, BD32 or HSL1).

•

HSL2 crossbar connection to the FEBs.

•

PIC CPU complex.

•

Physical PIC connectors.

•

Midplane connectors and power circuitry.

•

Processor subsystem, which includes a 667-MHz CPU, system controller, 128 MB of SDRAM, and two Fast Ethernet links to the Control Board.

•

An LED, located on the craft interface above the FPC, that displays the status of the FPC.

•

FPC online/offline button, located on the craft interface above the FPC.

Regardless ofwhether youare holding an FPC vertically or horizontally,the documentation uses the same terms for all four edges of the FPC

•

Faceplate—Edge of the FPC that has slots into which you insert the PICs

•

Connectoredge—Edge opposite the faceplate;this edgehas the connectorsthat attach to the midplane

Page 40

M120 Multiservice Edge Router Hardware Guide

•

Top edge—Edge at the top of the FPC when it is vertical

•

Bottom edge—Edge at the bottom of the FPC when it is vertical

Documentation

M120 FPCs and CFPCs Supported on page 14•

• FPC LEDs on the M120 Craft Interface on page 27

• Maintaining M120 FPCs and CFPCs on page 106

• Troubleshooting M120 FPCs and CFPCs on page 121

• Replacing an M120 FPC on page 152

M120 Compact FPCs (CFPCs) Overview

•

CFPC Description on page 12

•

CFPC Components on page 13

CFPC Description

A CFPC is a combination of a PIC and an FPC. It contains the interface circuitry and the FPC as a single assembly. The WAN interface enables interconnection directly to SONET transport facilities, eliminating the need for a separate SONET interface device.

The CFPCs install vertically in wo slots on the left side of the chassis in the front of the router (see Figure 7 on page 13). The CFPC slots are numbered top to bottom CFPC0 and CFPC1. The CFPC slots feature a smaller form factor than the Type 1, 2, and 3 FPC slots, to provide higher density for M120 10-gigabit interfaces.

Page 41

Chapter 2: M120 Hardware Components

Figure 7: FPC and CFPCs Installed in an M120 Router Chassis

CFPC Components

Two CFPCs are available for the M120 router: a 10-Gigabit Ethernet CFPC and an OC192 CFPC. Each CFPC is rated at 10 Gbps full duplex. Both CFPCs provide receptacles for XFP optical transceivers. Each CFPC weighs approximately 2 lbs. (0.9kg.) You can install any combination of CFPC types. Figure 8 on page 13 shows the Ethernet 10GBase XFP CFPC.

Figure 8: Ethernet 10GBASE XFP CFPC for the M120 Router

Both CFPC types consist of the following components:

•

CFPC card carrier.

•

Midplane connectors and power circuitry.

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M120 Multiservice Edge Router Hardware Guide

•

Processor subsystem, which includes a 667-MHz CPU, system controller, 128 MB of SDRAM, and two Fast Ethernet links to the Control Board.

•

Crosspoint switches for redundancy.

•

A metal bracket thatenhances airflow andserves as a guide forremoving andinstalling the CFPC.

•

An LED located on the CFPC faceplate that displays the status of the CFPC.

The 10-Gigabit Ethernet CFPC also contains the following components:

•

S2H FPGA—Bridge between HSL2 and one SPI-4.2 interface.

•

10GE MAC interface circuitry.

•

XFP optical transceiver (LAN/WAN PHY).

The OC192 CFPC also contains the following components:

•

H2H FPGA—Bridge between HSLA and HSL1 interface.

•

Juniper Networks D4P framer.

•

XFP optical transceiver.

Documentation

M120 FPCs and CFPCs Supported on page 14•

• Maintaining M120 FPCs and CFPCs on page 106

• Troubleshooting M120 FPCs and CFPCs on page 121

• Replacing an M120 CFPC on page 157

M120 FPCs and CFPCs Supported

M120 routers support the FPCs listed in Table 3 on page 14.

You can install any combination of these FPCs in the M120 router.

Table 3: FPCs Supported by the M120 Router

Maximum Number FPC NameFPC Type

of PICs Supported

per FPCFPC Model Number

Maximum Throughput per FPC

First Junos OS Release Support

8.0R24 Gbps4M120-FPC1FPC11

8.0R210 Gbps4M120-FPC2FPC22

A CFPC is a combination of a PIC and an FPC. It contains the interface circuitry and the FPC as a single assembly. The CFPCs provide receptacles for XFP optical transceivers.

8.0R210 Gbps1M120-FPC3FPC33

Page 43

The M120 chassis provides two slots for CFPCs, and supports any combination of CFPC types. M120 routers support the CFPCs listed in Table 4 on page 15.

Table 4: CFPCs Supported by the M120 Router

Maximum Throughput per CFPCCFPC Model NumberCFPC Name

Chapter 2: M120 Hardware Components

First Junos OS Release Support

Connector

Documentation

• M120 Flexible PIC Concentrators (FPCs) Overview on page 9

M120 PICs Description

PICs provide the physical connection to various network media types, receiving incoming packets from the network and transmitting outgoing packets to the network. During this process, each PIC performs framing and line-speed signaling for its media type. Before transmitting outgoing data packets, the PICs encapsulate the packets received from the FPCs. Each PIC is equipped with an ASIC that performs control functions specific to the media type of that PIC.

The PIC slots are labeled PIC0, PIC1, PIC2, and PIC3, top to bottom and left to right. You can install up to four PICs into the slots in a Type 1 or Type 2 FPC or one PIC in a Type 3 FPC. Type 1 and Type 2 PICs have captive screws at their upper and lower corners, and Type 3 PICs have an upper ejector handle and a lower captive screw.

8.0R210 GbpsM120-cFPC-1XGE-XFP10-Gigabit Ethernet

8.0R210 GbpsM120-cFPC-1OC192-XFPSONET/SDH OC192/STM64

Duplex LC/PC (Rx and Tx)

M120 Compact FPCs (CFPCs) Overview on page 12•

The router supportsvarious PICs,including ATM, Channelized, GigabitEthernet, IPServices, and SONET/SDH interfaces. Blank PICs resemble other PICs but do not provide any physical connection or activity. When a slot is not occupied by a PIC, you must insert a blank PIC to fill the empty slot and ensure proper cooling of the system. PICs are hot-removable and hot-insertable.

Documentation

M120 PICs Supported•

• M120 End-of-Life PICs Supported

• M120 PIC/FPC Compatibility

• Troubleshooting M120 PICs on page 122

• Maintaining M120 PICs and PIC Cables on page 112

• Replacing an M120 PIC on page 161

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M120 Multiservice Edge Router Hardware Guide

M120 Forwarding Engine Boards (FEBs) Overview

•

M120 Forwarding Engine Boards (FEBs) Description on page 16

•

M120 Forwarding Engine Boards (FEBs) LEDs on page 17

M120 Forwarding Engine Boards (FEBs) Description

The M120 router provides redundant Forwarding Engine Boards (FEBs). The FPC (the board that hoststhe PICs)is separate from the FEB (the board thathandles the packets). FEBs provide route lookup and forwarding functions from FPCs and CFPCs. FPCs and CFPCs are located on the front of the chassis, and provide power and management to the PICs through the midplane. The midplane relays signals to the FEB (inserted from the rear of the chassis, which processes the packets.

The midplane architecture allows any FEB to carry traffic for any FPC. You can configure the mapping of FPCs to FEBs. If a FEB fails, a backup FEB can quickly take over packet forwarding.

Figure 9: M120 FEB

FEB Components

Each FEB consists of the following components:

•

I-chip ASIC, which provides multiple paths for PFE to PIC communication.

•

H2S—Bridge between HSLA and one SPI4 interface.

•

A crossbar switch that provides connection between the FEB WAN links and the FPC WAN links.

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Chapter 2: M120 Hardware Components

•

Three LEDs located on the FEB faceplate that display the status of the FEB.

“M120 Forwarding Engine Boards (FEBs) LEDs” on page 17 describes the functions of the FEB LEDs.

•

Six LEDs located on the FEB faceplate indicate which FPC the FEB is connected to, labeled 0 through 5. The illuminated green LED corresponds to the FPC connected to the FEB.

•

Midplane connectors and power circuitry.

•

Maximum 20-Gbps fabric interface.

•

Online/offline button.

Documentation

Replacing an M120 FEB on page 149•

• Troubleshooting M120 FEBs on page 122

• Maintaining the M120 FEBs on page 113

• FEB LEDs on the M120 Craft Interface on page 27

• M120 Forwarding Engine Boards (FEBs) LEDs on page 17

M120 Forwarding Engine Boards (FEBs) LEDs

Table 5: M120 FEB LEDs

DescriptionStateColorLabel

FEB is online and is functioning normally.On steadilyGreenOK

FEB is powering up, but not online.Blinking

FEB has failed and is not carrying traffic.On steadilyYellowFAIL

On steadilyGreenACTIVE

FEB is on and mapped to an FPC. This LED is unlit if a FEB is designated as a backup and has not been failed over to.

Documentation

M120 Forwarding Engine Boards (FEBs) Description on page 16•

• Replacing an M120 FEB on page 149

• Troubleshooting M120 FEBs on page 122

• Maintaining the M120 FEBs on page 113

• FEB LEDs on the M120 Craft Interface on page 27

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M120 Multiservice Edge Router Hardware Guide

M120 Host Subsystem Description

The host subsystem provides the routing and system management functions of the router. You can install one or two host subsystems on the router. Each host subsystem functions as a unit; the Routing Engine must be installed directly into the Control Board.

NOTE: We recommend you install two host subsystems for redundant

protection.If you install only one host subsystem, we recommend you install it in slot CB0.

Each host subsystem has three LEDs that display its status. The host subsystem LEDs are located in the middle of the craft interface. For more information about the host subsystem LEDs, see “Host Subsystem LEDs on the M120 Craft Interface” on page 26.

The host subsystem consists of the following components:

Documentation

Taking the M120 Host Subsystem Offline on page 140•

• Maintaining the M120 Host Subsystem on page 104

• M120 Routing Engine Description on page 18

• M120 Control Board (CB) Description on page 21

M120 Routing Engine Overview

•

M120 Routing Engine Description on page 18

•

M120 Routing Engine LEDs on page 21

M120 Routing Engine Description

The Routing Engine runs the Junos OS. The software processes that run on the Routing Engine maintain the routing tables, manage the routing protocols used on the router, control the router interfaces, control somechassis components, and provide the interface for system management and user access to the router.

You can install one or two Routing Engines in the router. The Routing Engines install into the rear of the chassis in vertical slots directly into the CB labeled CB0 and CB1. If two Routing Engines are installed, one functions as the master and the other acts as the backup. If the master Routing Engine fails or is removed, and the backup is configured appropriately, the backup takes over as the master. For detailed information, see “Taking the M120 Host Subsystem Offline” on page 140.

If the host system is redundant, the backup Routing Engine is hot-removable and hot-insertable, but the master Routing Engine is hot-pluggable. A Routing Engine that is not redundant is hot-pluggable. Each Routing Engine requires a CB to be installed in the adjacent slot. RE0 installs below CB0, and RE1 installs below CB1. A Routing Engine does not power up if it is not installed into the CB.

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Chapter 2: M120 Hardware Components

NOTE: If two Routing Engines are installed, they must both be the same

hardware model.

There is a USB memory device that connects directly into the front of Routing Engine. The USB port allows you to plug in a USB keychain device.

Figure 10: M120 Routing Engine

•

Routing Engine Components on page 19

•

Routing Engine Boot Sequence on page 20

Routing Engine Components

Each Routing Engine (shown in Figure 10 on page 19) consists of the following components:

•

CPU—Runs Junos OS to maintain the router's routing tables and routing protocols. It has a Pentium-class processor.

•

DRAM—Provides storage for the routing and forwarding tables and for other Routing Engine processes.

•

USB port—Provides a removable media interface through which you can install the Junos OS manually. See Figure 11 on page 20. Junos supports USB version 1.0.

•

CompactFlash card—Provides primarystoragefor software images, configuration files, and microcode. The disk is a fixed compact flash and is inaccessible from outside the router.

•

Hard disk—Provides secondary storage for log files, memory dumps, and rebooting the system if the CompactFlash card fails.

•

LED—Indicatesdisk activityfor theinternal IDE interface. It does not necessarilyindicate routing-related activity.

•

HDD LED—Indicates disk activity for the hard disk drive.

NOTE: The LEDs thatreport host module status (including RoutingEngine status) are on the craft interface rather than the Routing Engine faceplate.

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M120 Multiservice Edge Router Hardware Guide

•

Interfaces for out-of-band management access—Provide information about Routing Engine status to devices (console, laptop, or terminal server) that can be attached to access ports located on the craft interface.

Each Routing Engine has one 10/100-Mbps Ethernet port for connecting to a management network, and two asynchronous serial ports—one for connecting to a console and one for connecting to a modem or other auxiliary device.

•

EEPROM—Stores the serial number of the Routing Engine.

•

Reset button—Reboots the Routing Engine when pressed.

•

Offline button—Takes the Routing Engine offline when pressed.

•

Extractor clips—Control the locking system that secures the Routing Engine.

NOTE: For specific information about Routing Engine components (for

example, the amount of DRAM), issue the show chassis routing-engine command.

Figure 11: USB Memory Device in an M120 Routing Engine

Routing Engine Boot Sequence

The Routing Engine boots from the storage media in this order: the USB device, then the CompactFlash card (if present), then the hard disk, then the LAN. The disk from which the router boots is called the primary boot device, and the other disk is the alternate boot device.

NOTE: If the router boots from an alternate boot device,a yellowalarmlights the LED on the router’s craft interface.

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Chapter 2: M120 Hardware Components

Documentation

• M120 Routing Engine LEDs on page 21

• Routing Engine Interface Ports and Status Indicators on the M120 Craft Interface on

page 25

• Maintaining the M120 Host Subsystem on page 104

• Replacing an M120 Routing Engine on page 147

• Routing EngineInterfaceCable and Wire Specifications for the M120 Routeron page 246

M120 Routing Engine LEDs

Each Routing Engine has one LED that indicates its status. The LED, labeled ONLINE, is located directly on the faceplate of the Routing Engine. Table 6 on page 21 describes the functions of the Routing Engine LED.

Table 6: M120 Routing Engine LED

DescriptionStateColorLabel

GreenONLINE

Blinking

On steadily

Routing Engine is transitioning online.

Routing Engine is functioning normally.

Routing Engine has failed.On steadilyRed

Documentation

M120 Routing Engine Description on page 18•

• Routing Engine Interface Ports and Status Indicators on the M120 Craft Interface on

page 25

• Maintaining the M120 Host Subsystem on page 104

• Replacing an M120 Routing Engine on page 147

• Routing EngineInterfaceCable and Wire Specifications for the M120 Routeron page 246

M120 Control Board (CB) Overview

•

M120 Control Board (CB) Description on page 21

•

M120 Control Board (CB) LEDs on page 23

M120 Control Board (CB) Description

Each CB works with an installed Routing Engine to provide control and monitoring functions for the router (see Figure 12 on page 22). These functions include determining Routing Engine mastership; controlling power and reset for the other router components; connecting the FEBs and FPCs; monitoring and controlling fan speed; and monitoring system status.

Hard disk is functioning normally.On steadilyBlueHDD

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M120 Multiservice Edge Router Hardware Guide

You can install one or two CBs in the router. The CBs install vertically into the rear of the chassis in the slots labeled CB0 and CB1. If two CBs are installed, one functions as the master CB and the other as its backup. If the master fails or is removed, the backup restarts and becomes the master.

With redundant CBs, thebackup CB is hot-removableand hot-insertable,but the master CB is hot-pluggable. If a CB fails and switches mastership to the redundant CB, the Routing Engine mastership switches as well.

Figure 12: M120 CB

•

CB Components on page 22

CB Components

Each CB consists of the following components:

•

Switch fabric—Provides transit traffic through the Control Board.

•

Control FPGA—Provides the PCI interface to the Routing Engine.

•

1000Base-T Ethernet controller—Provides a 1-Gbps Ethernet link between the Routing Engines.

•

Ethernet switch—Provides Ethernet connectivity between the Routing Engine and the FPCs and FEBs; link speeds are 10 Gbps to the RoutingEngine and FEBs and 100 Mpbs to the FPCs and CFPCs.

•

SONET clocking module—Provides a Stratum 3 timing reference for all SONET interfaces installed in the system.

•

LEDs—Three LEDs on the CB indicate the status of the CB and whether that CB is master. TheLEDs, labeled OK,FAIL, and MSTR are located directly onthe controlboard.

•

Circuits for chassis management and control.

•

Power circuits for the Routing Engine and CB.

•

Offline button—Takes the CB offline when pressed.

Documentation

M120 Control Board (CB) LEDs on page 23•

• Maintaining the M120 Host Subsystem on page 104

Page 51

• Replacing an M120 CB on page 143

M120 Control Board (CB) LEDs

Table 7 on page 23 describes the functions of the Control Board LEDs.

Table 7: M120 Control Board LEDs

Chapter 2: M120 Hardware Components

DescriptionStateColorLabel

Control board is functioning normally.On steadilyGreenOK

Control board has failed.On steadilyYellowFAIL

Control board is master.On steadilyBlueMSTR

Documentation

M120 Control Board (CB) Description on page 21•

• Maintaining the M120 Host Subsystem on page 104

• Replacing an M120 CB on page 143

M120 Craft Interface Overview

•

M120 Craft Interface Description on page 23

•

Alarm LEDs and Alarm Cutoff/Lamp TestButton onthe M120Craft Interface on page 24

•

Routing Engine Interface Ports and Status Indicators on the M120 Craft Interface on page 25

•

External Clock Interface Ports on the M120 Craft Interface on page 25

•

Host Subsystem LEDs on the M120 Craft Interface on page 26

•

FEB LEDs on the M120 Craft Interface on page 27

•

FPC LEDs on the M120 Craft Interface on page 27

•

Power Supply LEDs on the M120 Craft Interface on page 28

•

Alarm Relay Contacts on the M120 Craft Interface on page 28

M120 Craft Interface Description

The craft interface allows you to view status and troubleshooting information at a glance and to perform many system control functions. It is hot-insertable and hot-removable. The craft interface is located on the front of the router above the upper fan tray and contains the following:

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M120 Multiservice Edge Router Hardware Guide

Figure 13: Front Panel of the M120 Craft Interface

Documentation

Installing the M120 Craft Interface on page 131•

• M120 Router Chassis Description on page 6

• Replacing the M120 Craft Interface on page 129

Alarm LEDs and Alarm Cutoff/Lamp Test Button on the M120 Craft Interface

Two large alarm LEDs are located at the upper left of the craft interface (see Figure 13 on page 24). The circular red LED lights to indicate a critical condition that can result in a system shutdown. The triangular yellow LED lights to indicate a less severe condition that requires monitoring or maintenance. Both LEDs can be lit simultaneously.

A condition that causes an LED to light also activates the corresponding alarm relay contact on the craft interface, as described in “Alarm Relay Contacts on the M120 Craft Interface” on page 28.

To deactivate red and yellow alarms, press the button labeled ACO/LT (for “alarm cutoff/lamp test”), which is located to theright of the alarm LEDs. Deactivating an alarm turns off both LEDs and deactivates the device attached to the corresponding alarm relay contact on the craft interface.

Table 8 on page 24 describes the alarm LEDs and alarm cutoff button in more detail.

Table 8: M120 Alarm LEDs and Alarm Cutoff/Lamp Test Button

DescriptionStateColorShape

On steadilyRed

On steadilyYellow

——

Critical alarm LED—Indicates a critical condition that can cause the router to stop functioning. Possible causes include component removal, failure, or overheating.

Warningalarm LED—Indicates aserious but nonfatal error condition, such as a maintenance alert or a significant increase in component temperature.

Alarm cutoff/lamp test button—Deactivatesred and yellowalarms. Causesall LEDs on the craft interface to light (for testing purposes), when pressed and held.

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Chapter 2: M120 Hardware Components

Documentation

M120 Craft Interface Description on page 23•

• Routing Engine Interface Ports and Status Indicators on the M120 Craft Interface on

page 25

• External Clock Interface Ports on the M120 Craft Interface on page 25

• Replacing the M120 Craft Interface on page 129

Routing Engine Interface Ports and Status Indicators on the M120 Craft Interface

To the right of the alarm relay contact on the craft interface are two sets of ports that connect the Routing Engines to one or more external devices on which system administrators can issue Junos OS command-line interface (CLI) commands to manage the router (see Figure 13 on page 24). The set of ports in the left connects to the Routing Engine in the left Routing Engine slot (REO) and the set on the right connects to the Routing Engine (RE1) in the right Routing Engine slot.

The ports with the indicated label in each set function as follows:

•

AUX—Connects the Routing Engine to a laptop, modem, or other auxiliary device

through a cable with an RJ-45 connector.

•

CONSOLE—Connects the Routing Engine to a system console through a cable with an

RJ-45 connector.

•

ETHERNET—Connects the Routing Engine through an Ethernet connection to a

management LAN (or any other device that plugs into an Ethernet connection) for out-of-band management. The port uses an autosensing RJ-45 connector to support both 10-and 100-Mbps connections. Two small LEDs on the bottom of the port indicate the connection in use: the LED lights yellow or green for a 10-Mbps or 100-Mbps connection, and the LED lights green when traffic is passing through the port.

Documentation

RJ-45 Connector Pinouts for the M120 Routing Engine ETHERNET Port on page 247•

• RJ-45 Connector Pinoutsfor theRouting Engine AUX and CONSOLE Ports onpage 248

• RJ-45 Connector Pinouts for the External Clock Ports on page 248

External Clock Interface Ports on the M120 Craft Interface

Two external clock ports EXT CLOCK to the right of the craft interface alarm LEDs enable you to connect the router’s internal Stratum 3 clock to an external reference clock source with an RJ-45 cable. Using the router’s software, you can configure the internal Stratum 3 clock to synchronize with an external Building Integrated Timing System (BITS) or SDH Equipment Timing Source (SETS) timing source by including a clock synchronization statement at the [edit chassis] hierarchy level. Refer to the Junos OS System Basics Configuration Guide for configuration information.

The EXT CLOCK ports are labeled Aand B. They accept twoRJ-45 connectors for external clock inputs with T1 or E1 reference clocks.

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M120 Multiservice Edge Router Hardware Guide

Two bi-color LEDs in the lower left and right corners of each port indicate port status. The LED on the lower left as you face the craft interface indicates whether an external clock source ispresent. The LED on the lower right as you face the craft interface indicates if there is a fault. Table 9 on page 26 describes the external clock port LEDs,

Table 9: External Clock LEDs on the M120 Craft Interface

DescriptionStateColorLabel

On steadilyGreenA

Off–

On steadilyYellowB

(Fault LED)

Off–

Documentation

RJ-45 Connector Pinouts for the M120 Routing Engine ETHERNET Port on page 247•

• RJ-45 Connector Pinoutsfor theRouting Engine AUX and CONSOLE Ports onpage 248

• RJ-45 Connector Pinouts for the External Clock Ports on page 248

Host Subsystem LEDs on the M120 Craft Interface

Each host subsystem has three LEDs, located in the middle of the craft interface, that indicate its status. The LED labeled 0 indicates the status of the Routing Engine and CB installed in slot CB0. The LED labeled 1 indicates the status of the Routing Engine and CB installed in slotCB1.Table 10on page 26describes the functions of the host subsystem LEDs.

External clock source is plugged into the port, physical signal is present.

No external clock source is plugged into the port, no physical signal is present.

Fault condition; external reference clock frequency is out of the tolerance threshold deviation of 10 parts-per-million (PPM).

External clock signalis validated or no externalclock source is plugged into the port.

Table 10: M120 Host Subsystem LEDs

DescriptionStateColorLabel

Routing Engine is the master.On steadilyGreenRE MASTER

The Routing Engine is functioning.On steadilyGreenRE STATUS

The Routing Engine has failed.On steadilyRed

The board is online.On steadilyGreenCB STATUS

The board is transitioning online/offline.Blinking

The CB has failed.On steadilyRed

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Chapter 2: M120 Hardware Components

Documentation

M120 Host Subsystem Description on page 18•

• M120 Craft Interface Description on page 23

• Maintaining the M120 Host Subsystem on page 104

• Replacing the M120 Craft Interface on page 129

FEB LEDs on the M120 Craft Interface

Each FEB has two LEDs on the craft interface that indicate its status. The LEDs, labeled

0 through 5, are located on the lower right of the craft interface below the FEBS label.

Table 11 on page 27 describes the functions of the FEB LEDs.

Table 11: FEB LEDs on the M120 Craft Interface

DescriptionStateColorLabel

FEB is active.On steadilyGreenACTIVE

FEB is transitioning online/offline.Blinking

FEB is functioning normally.On steadilyGreenSTATUS

FEB is not functioning normally.On steadilyRed

Documentation

M120 Forwarding Engine Boards (FEBs) Description on page 16•

• M120 Forwarding Engine Boards (FEBs) LEDs on page 17

• M120 Craft Interface Description on page 23

• Maintaining the M120 FEBs on page 113

• Replacing the M120 Craft Interface on page 129

FPC LEDs on the M120 Craft Interface

Each FPC slot has one LED that indicates its status. The FPC LEDs, labeled FPC0 through

FPC5, are located along the bottom of the craft interface. Table 12 on page 27 describes

the functions of the FPC LEDs.

Table 12: M120 FPC LEDs

DescriptionStateColorLabel

FPC has failed.On steadilyRedSTATUS

FPC is functioning normally.On steadilyGreen

FPC is transitioning online/offline.Blinking

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M120 Multiservice Edge Router Hardware Guide

Documentation

M120 Flexible PIC Concentrators (FPCs) Overview on page 9•

• M120 Craft Interface Description on page 23

• Maintaining M120 FPCs and CFPCs on page 106

• Replacing the M120 Craft Interface on page 129

Power Supply LEDs on the M120 Craft Interface

Each power supply has one LED on the craft interface that indicates its status. The LEDs, labeled 0 and 1, are located on the lower left of the craft interface under the POWER label. Table 13 on page 28 describes the functions of the power supply LEDs.

Table 13: Power Supply LEDs on the M120 Craft Interface

Documentation

M120 AC Power Supply Description on page 29•

• M120 DC Power Supply Description on page 31

• M120 AC Power Supply LEDs on page 30

DescriptionStateColorLabel

Power supply has failed.On steadilyRedSTATUS

Power supply is functioning normally.On steadilyGreen

• M120 DC Power Supply LEDs on page 32

• M120 Craft Interface Description on page 23

• Maintaining the M120 Power Supplies on page 115

• Replacing the M120 Craft Interface on page 129

Alarm Relay Contacts on the M120 Craft Interface

The host interface has two alarm relay contacts for connecting the router to external alarm devices (see Figure 13 on page 24). Whenever a system condition triggers either the red or yellow alarm on the craft interface, the alarm relay contacts are also activated. The alarm relay contacts are located below the Routing Engine ports.

Documentation

M120 Craft Interface Description on page 23•

• Maintaining the M120 Power Supplies on page 115

• Replacing Alarm Relay Wires on the M120 Craft Interface on page 133

M120 Power Supplies Overview

•

M120 Power Supplies Description on page 29

•

M120 AC Power Supply Description on page 29

Page 57

•

M120 AC Power Supply LEDs on page 30

•

M120 DC Power Supply Description on page 31

•

M120 DC Power Supply LEDs on page 32

M120 Power Supplies Description

The M120 router is configurable with either one or two AC or DC power supplies. The power supplies connect to the midplane, which distributes the different output voltages produced by the power supplies to the router components, depending on their voltage requirements.

All power supplies are hot-removable and hot-insertable.

NOTE: To maintain proper cooling and prevent thermal shutdown of the

operating power supply unit, each power supply slot must contain either a powersupply or a blank panel. If you removea power supply, you must install a replacement power supply or a blank panel shortly after the removal.

Chapter 2: M120 Hardware Components

CAUTION: Mixing ACand DC powersupplies isnot supported.The first power

supply poweredon will electrically disable the second power supply without damaging any components in the system.

Documentation

Power Supply LEDs on the M120 Craft Interface on page 28•

• M120 AC Power Supply Description on page 29

• M120 DC Power Supply Description on page 31

• Connecting Power to an AC-Powered M120 Router on page 89

• Connecting Power to a DC-Powered M120 Router on page 91

• Maintaining the M120 Power Supplies on page 115

M120 AC Power Supply Description

In the AC power configuration, the router contains two AC power supplies (see Figure 14 on page 30), located vertically at the rear of the chassis in slots PEM0 through PEM1 (left to right). Each AC power supply provides power to all components in the router. When two power suppliesare present, they share poweralmost equally within a fullypopulated system.

Two AC power supplies provide full power redundancy. If one power supply fails or is removed, theremaining power supply instantly assumes theentire electrical load without interruption. One power supply provides the maximum configuration with full power for as long as the router is operational.

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M120 Multiservice Edge Router Hardware Guide

Each AC power supply has two AC appliance inlets. Each requires a dedicated AC power feed. For 100-120 VAC, both inlets are used and the bottom inlet cover must be removed prior to installation. For 200-240 VAC, only the top inlet is used.

Figure 14: M120 AC Power Supply

Documentation

M120 AC Power Supply LEDs on page 30•

• M120 Router Power Requirements on page 237

• Connecting Power to an AC-Powered M120 Router on page 89

• Maintaining the M120 Power Supplies on page 115

• Replacing an M120 AC Power Supply on page 173

• M120 AC Power, Connection, and Power Cord Specifications on page 231

M120 AC Power Supply LEDs

The LED on each power supply faceplate indicates the status of the power supply (see Table 14 on page 30, which applies to the AC and DC power supply). The power supply status is also reflected in two LEDs on the craft interface (see Table 13 on page 28). In addition, a power supply failure triggers the red alarm LED on the craft interface.

Table 14: M120 Power Supply LED

DescriptionStateColor

No power applied to power supply.OffBlue

Blinking

•

Power supply blinks for 5 seconds after initial power on.

•

Power supply is installed, but not powered on.

•

Input voltage is invalid.

•

Power supply has failed.

Power supply is functioning normally.On steadily

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Chapter 2: M120 Hardware Components

Documentation

M120 Router Power Requirements on page 237•

• Connecting Power to an AC-Powered M120 Router on page 89

• Maintaining the M120 Power Supplies on page 115

• Replacing an M120 AC Power Supply on page 173

• M120 AC Power, Connection, and Power Cord Specifications on page 231

M120 DC Power Supply Description

In the DC power configuration, the router contains two DC power supplies (see Figure 15 on page 31), located in the right rear of the chassis in slots PEM0 and PEM1 (left to right). A single DC power supply provides sufficient power for a fully configured router.

Two DC power supplies share power almost equally within a fully populated system. If either power supply fails, the remaining power supply takes over without interruption.

Each DC power supply has a single DC input (–48 VDC and return) that requires a dedicated60 A(–48 VDC)circuit breaker forthe maximumrouter hardware configuration. .

Figure 15: M120 DC Power Supply

Documentation

M120 DC Power Supply LEDs on page 32•

• M120 Router Power Requirements on page 237

• Connecting Power to a DC-Powered M120 Router on page 91

• Maintaining the M120 Power Supplies on page 115

• Replacing an M120 DC Power Supply on page 177

• M120 DC Power, Connection, and Cable Specifications on page 234

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M120 Multiservice Edge Router Hardware Guide

M120 DC Power Supply LEDs

Documentation

M120 DC Power Supply Description on page 31•

• M120 Router Power Requirements on page 237

• Connecting Power to a DC-Powered M120 Router on page 91

• Maintaining the M120 Power Supplies on page 115

• Replacing an M120 DC Power Supply on page 177

• M120 DC Power, Connection, and Cable Specifications on page 234

M120 Cooling System Description

The cooling system consists of the following components:

•

Two front fan trays

•

Two rear fan trays

•

Front air filter

The cooling system components work together to keep all router components within the acceptable temperature range (see Figure 16 on page 33, Figure 17 on page 33, and Figure 18 on page 33). The router cooling system comprises two front and two rear fan trays (see Figure 1 on page 7 and Figure 2 on page 7). Both the front and rear fan trays install horizontally above and below the front and rear card cages. Each fan tray contains eight fans. The two front fan trays are interchangeable, the two rear fan trays are interchangeable, but the front and rear fan trays are not interchangeable. The fan trays are hot-insertable and hot-removable. The front fan trayscool the components installed in the front card cage (the FPCs, CFPCs, PICs, and craft interface). The rear fan trays cool the components installedin the rear card cage(the Routing Engines, CBs, power supplies, and FEBs). Figure 16 on page 33 shows the airflow through the router.

An air filter in the front in the chassis located beneath the lower fan tray helps keep dust and other particles from entering the cooling system. To function properly, the entire cooling system requires an unobstructed airflow and proper clearance around the site, as described in “M120 Clearance Requirements for Airflow and Hardware Maintenance” on page 41.

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Chapter 2: M120 Hardware Components

Figure 16: Airflow Through the M120 Chassis

The host subsystem monitors the temperature of the router components. When the router is operating normally, the fans function at lower than full speed. If a fan fails or the ambient temperature rises above a threshold, the speed of the remaining fans is automatically adjusted to keep the temperature within the acceptable range. If the ambient maximum temperature specification is exceeded and the system cannot be adequately cooled, the Routing Engine shuts down the system by disabling output power from each PEM.

Documentation

Both the front and rear card cages pull air from a single intake in the front of the router. Air is pushed up throughboth card cages where it combines ina common exhaustplenum and is exhausted out the upper sides and rear of the system. Some air is circulated back down through the power supplies and is exhausted out the lower rear area of the chassis below the power supplies.

Figure 17: M120 Front Fan Tray

Figure 18: M120 Rear Fan Tray

Troubleshooting the M120 Cooling System on page 120•

• Maintaining the M120 Air Filter on page 102

• Replacing an M120 Air Filter on page 138

• Maintaining the M120 Fan Trays on page 102

• Replacing an M120 Fan Tray on page 134

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M120 Multiservice Edge Router Hardware Guide

M120 Cable Management System Description

The cable management system (see Figure 19 on page 34) consists of a row of nine semicircular plastic bobbins mounted on the front of therouter below the FPC card cage. The PIC cables pass between the bobbins and into the tray, keeping the cables organized and securely in place. The curvature of the bobbins also helps maintain the proper bend radius for optical PIC cables.

You can pull the cable management system up and outward to lock it into the maintenance position. This allows you to access the lower fan tray and the front air filter.

Figure 19: M120 Cable Management System

Documentation

• Maintaining M120 PICs and PIC Cables on page 112

• Replacing an M120 PIC Cable on page 165

Page 63

PART 2

Setting Up the M120 Router

•

Preparing the Site for M120 Router Installation on page 37

•

Unpacking the M120 Router on page 43

•

Installing the M120 Router Mounting Hardware on page 49

•

Installing the M120 Router with a Lift on page 55

•

Installing the M120 Router Without a Mechanical Lift on page 59

•

Grounding the M120 Router on page 79

•

Connecting the M120 Router to External Devices on page 81

•

Providing Power to the M120 Router on page 89

•

Configuring Junos OS on page 95

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M120 Multiservice Edge Router Hardware Guide

Page 65

CHAPTER 3

Preparing the Site for M120 Router Installation

•

M120 Site Preparation Checklist on page 37

•

M120 Cabinet Requirements on page 38

•

M120 Rack Mounting Requirements on page 39

•

M120 Clearance Requirements for Airflow and Hardware Maintenance on page 41

M120 Site Preparation Checklist

The checklist in Table 15 on page 37 summarizes the tasks you need to perform when preparing a site for router installation.

Table 15: M120 Site Preparation Checklist

NotesDatePerformed ByItem or Task

Verify that environmental factors such as temperatureand humidity donot exceedrouter tolerances (see “M120 Router Environmental Specifications” on page 227).

Measure distance between external power sources and router installation site.

Select the type of rack or cabinet.

Plan rack or cabinet location, includingrequired space clearances.

If arack isused, secure rack to floorand building structure.

Acquire cables and connectors.

Locate sites for connection of system grounding.

Calculate power budget and power margin.

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M120 Multiservice Edge Router Hardware Guide

Documentation

M120 Router Chassis Description on page 6•

• M120 Router Physical Specifications on page 225

• General Safety Warnings for M Series, MX Series, and T Series Routers on page 190

• Installation Safety Warnings for M Series, MX Series, and T Series Routers on page 195

• M120 Chassis Lifting Guidelines on page 195

M120 Cabinet Requirements

•

M120 Cabinet Size and Clearance Requirements on page 38

•

M120 Cabinet Airflow Requirements on page 38

M120 Cabinet Size and Clearance Requirements

The minimum size cabinet that can accommodate the router is 600 mm wide and 800 mm deep. A cabinet larger than the minimum requirement provides better airflow and reduces the chance of overheating. To accommodate a single router, the cabinet must be at least 12 U (21 in. or 53.4 cm) high. If you provide adequate cooling air and airflow clearance, you can stack four routers in a cabinet that has at least 48 U (84 in. or

2.1 m) of usable vertical space.

The minimum front and rear clearance requirements depend on the mounting configuration you choose. The minimum total clearance inside the cabinet is 30.70 in. between the inside of the front door and the inside of the rear door.

NOTE: If you mount the router in a cabinet, be sure that sufficient room is

provided for cable management and cables.

Documentation

M120 Cabinet Airflow Requirements on page 38•

• Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet on

page 49

M120 Cabinet Airflow Requirements

When you mount the router in a cabinet, you must ensure that ventilation through the cabinet issufficient to prevent overheating. Following is alist of requirements to consider when planning for chassis cooling:

•

Ensure that the cool air supply youprovide through the cabinet canadequatelydissipate the thermal output of the router. Table 25 on page 227 lists the router's environmental specifications, including its operating temperature and thermal output.

•

Ensure that the cabinet allows the chassis hot exhaust air to exit from the cabinet without recirculating into the router. An open cabinet (without a top or doors) that employs hot air exhaust extraction from the top allows the best airflow through the chassis. If the cabinet contains a top or doors, perforations in these elements assist

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Chapter 3: Preparing the Site for M120 Router Installation

with removing the hot air exhaust. For an illustration of chassis airflow, see Figure 16 on page 33.

•

Route and dress all cables to minimize the blockage of airflow to and from the chassis.

Documentation

M120 Cabinet Size and Clearance Requirements on page 38•

• Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet on

page 49

M120 Rack Mounting Requirements

The router can be installed in a rack. Many types of racks are acceptable, including four-post (telco) racks andopen-frame racks. Anexample of an open-frame rackappears in Figure 20 on page 41. Table 16 on page 39 summarizes rack requirements and specifications for the M120 router.

Table 16: M120 Rack Requirements and Specifications

GuidelinesRack Requirement

Rack type and mounting bracket hole spacing

Use a four-post rack or a two-post rack. You can mount the router on any four-post or two-post rack that provides bracket holes or hole patterns spaced at 1 U (1.75-in./4.44-cm) increments and that meets the size and strength requirements specified in this table.

A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Industry Association (http://www.eia.org).

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M120 Multiservice Edge Router Hardware Guide

Table 16: M120 Rack Requirements and Specifications (continued)

GuidelinesRack Requirement

•

Rack size and strength

Ensure that the rack is a 19-in. rack as defined in Cabinets, Racks, Panels, and AssociatedEquipment (document number EIA-310–D) publishedby theElectronics Industry Association (http://www.eia.org).

•

Ensure that the rack is one of the following standard lengths:

•

23.62 in. (600 mm)

•

30.0 in. (762 mm)

•

21.5 in. (800 mm)

•

The rack rails must be spaced widely enough to accommodate the router chassis's external dimensions: 20.75 in. (52.71 cm) high, 24.3 in. (61.7 cm) deep, and

17.43 in.(44.3 cm) wide. The outer edges of the mounting brackets extend the width to 19 in. (48.3 cm). The spacing of rails and adjacent racks must also allow for the clearances around the router and rack that are specified in “M120 Clearance Requirements for Airflow and Hardware Maintenance” on page 41.

•

All mounting options require you to install the supplied large mounting shelf. The supplied smallmounting shelfis neededfor a front-mount four-post rackor cabinet.

•

If a front-mountrack is used, you must support the back ofthe router with the large mounting shelf included with your shipment, or some other structure.

•

For a front-mount rack, you use the front-mounting flanges on the front of the chassis instead ofthe mountingbrackets.The flangeshave holes forrack-mounting screws, spaced at 3.5 in. (8.89 cm). In addition, if you are mounting the router in a four-post rack or cabinet, you must install the spacer bars on the rack before you mount the chassis. For instructions about installing the mounting hardware, see “Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet” on page 49, “Installing the MountingHardware fora Front-MountOpen-Frame Rack” on page 51, or “Installing the Mounting Hardware for a Center-Mount Open-Frame Rack” on page 53.

•

The chassis height of 20.75 in. (52.71 cm) is approximately 12 U. A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310-D)published by theElectronicsIndustry Association.You can stack four M120 routers in a rack that has at least 48 U (84 in. or 2.1 m) of usable vertical space.

•

The rack must bestrong enough to supportthe weightof the fully configured router, up to 225 lb (102.1 kg). If you stack four fully configured routers in one rack, it must be capable of supporting about 900 lb (408.4 kg).

•

Ensure that the spacing of rails and adjacent racks allows for the proper clearance around theswitch and rackas specifiedin “M120 Clearance Requirements forAirflow and Hardware Maintenance” on page 41.

Rack connection to the building structure

•

Secure the rack to the building structure.

•

If earthquakes are a possibility in your geographical area, secure the rack to the floor.

•

Secure the rack to the ceiling brackets aswell aswall orfloor brackets formaximum stability.

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Chapter 3: Preparing the Site for M120 Router Installation

Figure 20: Typical Open-Frame Rack

Documentation

M120 Clearance Requirements for Airflow and Hardware Maintenance on page 41•

• Installing the Mounting Hardware for a Center-Mount Open-Frame Rack on page 53

• Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet on

page 49

• Installing the Mounting Hardware for a Front-Mount Open-Frame Rack on page 51

• Installation Safety Warnings for M Series, MX Series, and T Series Routers on page 195

• Installing the M120 Router Without Using a Mechanical Lift on page 69

M120 Clearance Requirements for Airflow and Hardware Maintenance

When planning the installation site, you need to allow sufficient clearance around the rack (see Figure 21 on page 42):

•

For the cooling system to function properly, the airflow around the chassis must be unrestricted. Figure 16 on page 33 depicts the airflow in the router.

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M120 Multiservice Edge Router Hardware Guide

•

For service personnel to remove and install hardware components, there must be adequate space at the front and back of the router. Allow at least 30 in. (76.2 cm) both in front of and behind the router.

•

Airflow vents provided along the sides of the chassis must remainopen and uncovered for proper cooling.

Figure 21: M120 Chassis Dimensions and Clearance Requirements

Documentation

• M120 Rack Mounting Requirements on page 39

• Installing the Mounting Hardware for a Center-Mount Open-Frame Rack on page 53

• Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet on

page 49

• Installing the Mounting Hardware for a Front-Mount Open-Frame Rack on page 51

• Installation Safety Warnings for M Series, MX Series, and T Series Routers on page 195

• Installing the M120 Router Without Using a Mechanical Lift on page 69

Page 71

CHAPTER 4

Unpacking the M120 Router

•

M120 Router Installation Summary on page 43

•

Tools and Parts Required to Unpack the M120 Router on page 44

•

Unpacking the M120 Router on page 44

•

Verifying M120 Parts Received on page 46

M120 Router Installation Summary

To install the M120 router:

1. Prepare your installation site.

See “M120 Site Preparation Checklist” on page 37.

2. Review the safety guidelines.

See “General Laser Safety Guidelines for the M120 Router” on page 200.

3. Unpack the router and verify the parts.

•

Unpacking the M120 Router on page 44

•

Verifying M120 Parts Received on page 46

4. Install the mounting hardware.

•

Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet on page 49

•

Installing the Mounting Hardware for a Front-Mount Open-Frame Rack on page 51

•

Installing the Mounting Hardware for aCenter-Mount Open-Frame Rackon page53

5. Install the router.

•

Installing the M120 Router Using a Mechanical Lift on page 55

•

Installing the M120 Router Without Using a Mechanical Lift on page 69

6. Connect cables to the network and external devices.

See “Connecting the M120 Router to Management and Alarm Devices” on page 81.

7. Connect the grounding cable.

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M120 Multiservice Edge Router Hardware Guide

See “Connecting the Grounding Cable to the M120 Router” on page 79.

8. Connect the AC power cord or DC power cables:

•

Connecting Power to an AC-Powered M120 Router on page 89

•

Connecting Power to a DC-Powered M120 Router on page 91

9. Power on the router.

See “Powering On the M120 Router” on page 92.

10. Perform the initial system configuration.

See “Initially Configuring JUNOS Software on the M120 Router” on page 95.

Documentation

M120 Router Chassis Description on page 6•

• Installation Safety Warnings for M Series, MX Series, and T Series Routers on page 195

• M120 Chassis Lifting Guidelines on page 195

Tools and Parts Required to Unpack the M120 Router

To unpack the router and prepare for installation, you need:

•

Phillips (+) screwdriver, number 2

•

1/2-in. or 13-mm open-end orsocket wrench to remove bracket boltsfrom the shipping pallet

•

Blank panels to cover any slots not occupied by a component

Documentation

M120 Router Chassis Description on page 6•

• M120 Router Installation Summary on page 43

• M120 Site Preparation Checklist on page 37

Unpacking the M120 Router

The router is shipped in a cardboard box strapped securely to a wood pallet. Plastic straps secure the top and bottom in place. The router chassis is bolted to this pallet. Quick Start installation instructions and a cardboard accessory box are also included in the shipping container.

The shipping container measures 32.5 in. (82.6 cm) high, 35 in. (88.9 cm) wide, and 27 in. (68.6 cm) deep. The total weight of the container containing the router and accessories can range from 149 lb (63.5 kg) to 280 lb (127 kg).

NOTE: The router is maximally protected inside the shipping crate. Do not unpack it until you are ready to begin installation.

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Chapter 4: Unpacking the M120 Router

To unpack the router, (see Figure 22 on page 45):

1. Move the shipping container to a staging area as close to the installation site as

possible, where you have enough room to remove the components from the chassis. While the chassis is bolted to the pallet, you can use a forklift or pallet jack to move it.

2. Position the shipping container with the wooden pallet on the bottom and the

corrugated cardboard facing up.

3. Remove the plastic straps that hold the top and bottom of the shipping container in

place.

4. Remove the corrugated container cover and set it aside.

5. Remove the foam covering the top of the router.

6. Remove the accessory box and the Quick Start documentation.

7. Verify the parts received against the lists in Table 17 on page 46 and Table 18 on

page 47.

8. Remove the vapor corrosion inhibitor (VCI) packs attachedto the pallet, being careful

not to break the VCI packs open.

9. To remove the brackets holding the chassis on the pallet, use a 1/2-in. socket wrench

and anumber 2 Phillips screwdriver toremove the bolts and screwsfrom thebrackets.

10. Store the brackets and bolts inside the accessory box.

11. Save the corrugated shipping container cover, pallet, and packing materials in case

you need to move or ship the router later. The packaging utilizes recyclable materials in the design and should be disposed of properly. Recycle packaging per your local, state or country specific laws and regulations.

12. To proceed with the installation, see “Installing the M120 Router Using a Mechanical

Lift” on page 55or “Installing the M120 Router Without Using a Mechanical Lift” on page 69.

Figure 22: Contents of the M120 Shipping Container

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M120 Multiservice Edge Router Hardware Guide

Documentation

M120 Router Chassis Description on page 6•

• M120 Router Installation Summary on page 43

• M120 Site Preparation Checklist on page 37

• Verifying M120 Parts Received on page 46

Verifying M120 Parts Received

A packing list is included in each shipment. Check the parts in the shipment against the items on the packing list. The packing list specifies the part numbers and descriptions of each part in your order.

If any part is missing, contact a customer service representative.

A fully configured router contains the router chassis with installed components, listed in Table 17 on page 46, and an accessory box, which contains the parts listed in Table 18 on page 47. The parts shipped with your router can vary.

Table 17: Parts List for a Fully Configured M120 Router

QuantityComponent

1Chassis, including midplane, craft interface

FPCs

PICs

Up to 6

Up to four Type 1, 2, or 3 FPCs

Up to two CFPCs

Up to sixteen Type 1 PICs

Up to sixteen Type 2 PICs

Up to four Type 3 PICs

Up to 6FEBs

1 or 2Routing Engines

1 or 2CBs

1 or 2Power supplies

2Front fan tray

2Rear fan tray

1Front air filter

1Quick Start installation instructions

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Chapter 4: Unpacking the M120 Router

Table 17: Parts List for a Fully Configured M120 Router (continued)

QuantityComponent

1Large mounting shelf

1Small mounting shelf

2Spacer bars

Blank panels for slots without components installed

Table 18: Accessory Box Parts List

the router through the serial port

connect the router alarms

One blank panel for each slot not occupied by a component

QuantityPart

14Screws to mount chassis

2Screws, Pan hd, Phil, 1/4-20 x .50, Steel, Zinc Plated

2Split washers, 1/4, Steel, Zinc Plated

5Terminal lugs, 6-AWG, for grounding and DC power

1DB-9 (male) to DB-25 (female) serial adapter

1Serial cable, with RJ-45 jack to female DB-9, to connect

2Terminal block plug, 3 pole, 5.08 mm spacing, 12A, to

1Label, accessories contents, M120

1USB flash drive with Junos OS.

1Read me first document

1Affidavit for T1 connection

1Juniper Networks Product Warranty

1End User License Agreement

1Document sleeve

23" x 5" pink bag

29" x 12" pink bag, ESD

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M120 Multiservice Edge Router Hardware Guide

Table 18: Accessory Box Parts List (continued)

Category 5E, 15'

QuantityPart

1Accessory box, 19 x 12 x 3"

1Ethernet cable, RJ-45/RJ-45, 4-pair stranded UTP,

1ESD wrist strap with cable

Documentation

• M120 Router Chassis Description on page 6

• M120 Router Installation Summary on page 43

• M120 Site Preparation Checklist on page 37

Page 77

CHAPTER 5

Installing the M120 Router Mounting Hardware

•

Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet on page 49

•

Installing the Mounting Hardware for a Front-Mount Open-Frame Rack on page 51

•

Installing the Mounting Hardware for a Center-Mount Open-Frame Rack on page 53

Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet

If you are installing the router in a front-mount four-post rack or cabinet, you must first install thelarge mounting shelf,followedby thesmall mounting shelf and then the spacer bars on the rack. In addition, you must remove the mounting brackets from the chassis.

Table 19 on page 49 specifies the holes in which you insert cage nuts and screws toinstall the mountinghardware required in a four-post or cabinet rack (an X indicates a mounting hole location). The hole distances are relative to one of the standard U divisions on the rack. The bottom of all mounting shelves is at 0.04 in. (0.02 U) above a U division.

Table 19: Four-Post Rack or Cabinet Mounting Hole Locations for the M120 Router

Large ShelfDistance Above U DivisionHole

Spacer Bars

X8.86 U15.5 in. (39.4 cm)27

X6.86 U12.0 in. (30.5 cm)21

X3.86 U6.75 in. (17.1 cm)12

X1.86 U3.25 in. (8.3 cm)6

Small Shelf

X0.86 U1.51 in. (3.8 cm)3

XX0.50 U0.88 in. (2.2 cm)2

X0.14 U0.25 in. (0.6 cm)1

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M120 Multiservice Edge Router Hardware Guide

To install the mounting shelves and spacer bars (see Figure 23 on page 51):

1. On the front rack rails, install cage nuts in the holes specified in Table 19 on page 49

for the large shelf and the spacer bars.

2. On the front of each front rack rail, partially insert a mounting screw into the hole

containing the lowest cage nut.

3. Install the large shelf on the front rack rails. Rest the bottom slot of each ear on a

mounting screw.

4. Partially insert a mounting screw into the top hole in each ear of the large shelf.

5. Tighten all the screws completely.

6. Therouter isshipped witheach spacer bar attached to the rear of each front-mounting

flange. Remove each spacer bar by removing the five screws that fasten the spacer bar to the front-mounting flange.

7. Placeone of the spacer bars over an ear of the installedlarge shelf. Position the spacer

bar so that its lower edge is just above the installed screw holding the large shelf.

8. Insert a mounting screw into each of the nonthreaded holes in the recesses of the

spacer bar to secure the spacer bar. Each hole should have a cage nut behind it.

9. Repeat Steps 7 and 8 for the other spacer bar.

10. Tighten all the screws completely.

11. On the rear rack rails, install cage nuts in the holes specified in Table 19 on page 49

for the small shelf.

12. On the back of each rear rack rail, partially insert a mounting screw into the hole

containing the lowest cage nut.

13. Install the small shelf on the back rack rails. Rest the bottom slot of each ear on a

mounting screw. The small shelf installson theback ofthe rearrails, extending toward the center of the rack. The bottom of the small shelf should align with the bottom of the large shelf.

14. Partially insert screws into the open holes in the ears of the small shelf.

15. Tighten all the screws completely.

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Chapter 5: Installing the M120 Router Mounting Hardware

Figure 23: Installing the M120 Mounting Hardware for a Four-Post Rack or Cabinet

Documentation

M120 Rack Mounting Requirements on page 39•

• M120 Site Preparation Checklist on page 37

• Installation Safety Warnings for M Series, MX Series, and T Series Routers on page 195

Installing the Mounting Hardware for a Front-Mount Open-Frame Rack

If you are installing the router in a front-mount open-frame rack, you must first install the large mountingshelf on the rack and removethe mounting brackets from the chassis. The small mounting shelf and the spacer bars are not needed.

Table 20on page52 specifies the holes inwhich you insert screws to install the mounting hardware in an open-frame rack (an X indicates a mounting hole location). The hole distances are relative to one of the standard U divisions on the rack. For reference, the bottom of all mounting shelves is at 0.04 in. (0.02 U) above a U division.

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M120 Multiservice Edge Router Hardware Guide

Table 20: Open-Frame Rack Mounting HoleLocations forthe M120 Router

Large ShelfDistance Above U DivisionHole

X9.86 U17.26 in. (43.8 cm)30

X8.86 U15.51 in. (39.4 cm)27

X7.86 U13.76 in. (34.9 cm)24

X6.86 U12.01 in. (30.5 cm)21

X5.86 U10.26 in. (26.0 cm)18

X4.86 U8.51 in. (21.6 cm)15

X3.86 U6.76 in. (17.1 cm)12

X2.86 U5.01 in. (12.7 cm)9

X1.86 U3.26 in. (8.3 cm)6

X0.86 U1.51 in. (3.8 cm)3

X0.50 U0.88 in. (2.2 cm)2

0.14 U0.25 in. (0.6 cm)1

To install the large mounting shelf (see Figure 24 on page 53):

1. On the rear of each rack rail, partially insert a mounting screw into the highest hole

specified in Table 20 on page 52 for the large shelf.

2. Install the large shelf on the rack. Hang the shelf over the mounting screws using the

keyhole slots located near the top of the large shelf flanges.

3. Partially insert screws into the open holes in the ears of the large shelf.

4. Tighten all the screws completely.

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Chapter 5: Installing the M120 Router Mounting Hardware

Figure 24: Installing the M120 Mounting Hardware for an Open-Frame Rack

Documentation

M120 Rack Mounting Requirements on page 39•

• M120 Site Preparation Checklist on page 37

• Installation Safety Warnings for M Series, MX Series, and T Series Routers on page 195

Installing the Mounting Hardware for a Center-Mount Open-Frame Rack

If you are installing the router in a center-mount open-frame rack, you must first install the large mounting shelf on the rack. The spacer bars are not needed for this mounting option; however, you can leave them attached to the front-mounting flanges.

To install the large mounting shelf (see Figure 24 on page 53):

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M120 Multiservice Edge Router Hardware Guide

1. On the rear of each rack rail, partially insert a mounting screw into the highest hole

specified in Table 20 on page 52 for the large shelf.

2. Install the large shelf on the rack. Hang the shelf over the mounting screws using the

keyhole slots located near the top of the large shelf flanges.

3. Partially insert screws into the open holes in the ears of the large shelf.

4. Tighten all the screws completely.

Documentation

• M120 Rack Mounting Requirements on page 39

• M120 Site Preparation Checklist on page 37

• Installation Safety Warnings for M Series, MX Series, and T Series Routers on page 195

Page 83

CHAPTER 6

Installing the M120 Router with a Lift

•

Tools Required to Install the M120 Router Using a Mechanical Lift on page 55

•

Installing the M120 Router Using a Mechanical Lift on page 55

Tools Required to Install the M120 Router Using a Mechanical Lift

To install the router, you need the following tools:

•

Mechanical lift

•

Phillips (+) screwdrivers, number 2

Documentation

M120 Router Chassis Description on page 6•

• M120 Router Installation Summary on page 43

• M120 Chassis Lifting Guidelines on page 195

• General Safety Warnings for M Series, MX Series, and T Series Routers on page 190

Installing the M120 Router Using a Mechanical Lift

Because of the router's size and weight—up to 225 lb (102.1 kg) depending on the configuration—we strongly recommend you install the router using a mechanical lift. If you do not use a lift to install the router, refer to “Installing the M120 Router Without Using a Mechanical Lift” on page 69 for complete instructions to safely install the router.

Before installing the router:

1. Read the safety information in “M120 Chassis Lifting Guidelines” on page 195.

2. Prepare your site and review the guidelines in “M120 Site Preparation Checklist” on

page 37.

3. Remove the router from the shipping container as described in “Unpacking the M120

Router” on page 44.

4. Install the mounting hardware as described in “Installing the Mounting Hardware for

a Front-Mount Four-Post Rack or Cabinet” on page 49, “Installing the Mounting Hardwarefor aFront-Mount Open-FrameRack” onpage 51, or “Installingthe Mounting Hardware for a Center-Mount Open-Frame Rack” on page 53.

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M120 Multiservice Edge Router Hardware Guide

CAUTION: Before front mounting the router in a rack, have a qualified

technician verify that the rack is strong enough to support the router's weight and is adequately supported at the installation site.

To install the router using a lift (see Figure 25 on page 57):

1. Ensure that the rack is in its permanent location and is secured to the building. Ensure

that the installationsite allows adequate clearance for both airflow andmaintenance. For details, see “M120 Clearance Requirements forAirflowand HardwareMaintenance” on page 41.

2. Load the router onto the lift, making sure it rests securely on the lift platform.

3. Using the lift, position the router in front of the rack or cabinet, centering it in front of

the mounting shelves.

4. Lift the chassis approximately 0.75 in. above the surface of the mounting shelves and

position it as close as possible to the shelves.

5. Carefully slide the router onto the mounting shelves so that the bottom of the chassis

and the mounting shelves overlap by approximately two inches.

6. Slide the router onto the mounting shelves until the mounting brackets or

front-mounting flanges contact the rack rails or spacer bars (depending on your type of installation). The shelves ensure that the holes in the mounting brackets and the front-mounting flanges of the chassis align with the holes in the rack rails.

7. Move the lift away from the rack.

8. If you are installing the router in a four-post rack or cabinet, install a mounting screw

into each of the holes aligned with the threaded holes in the spacer bars. If you are installing the router in an open-frame rack, install a mounting screw into each of the open mounting holes aligned with the rack, starting from the bottom.

9. Visually inspect the alignment of the router. If the router is installed properly in the

rack, all the mounting screws on one side of the rack should be aligned with the mounting screws on the opposite side and the router should be level.

Page 85

Chapter 6: Installing the M120 Router with a Lift

Figure 25: Installing the M120 Router in the Rack

Documentation

NOTE: This illustration depicts the router being installed in an open-frame rack. For an illustration of the mounting hardware required for a four-post rack or cabinet, see Figure 23 on page 51.

• M120 Router Chassis Description on page 6

• M120 Router Physical Specifications on page 225

• General Safety Warnings for M Series, MX Series, and T Series Routers on page 190

• General Safety Guidelines for M Series, MX Series, and T Series Routers on page 189

Page 86

M120 Multiservice Edge Router Hardware Guide

Page 87

CHAPTER 7

Installing the M120 Router Without a Mechanical Lift

•

Tools and Parts Required to Install the M120 Router Without a Mechanical Lift on page 59

•

Removing Components from the Chassis Before Installing the M120 Router Without a Mechanical Lift on page 59

•

Installing the M120 Router Without Using a Mechanical Lift on page 69

•

Reinstalling Components in the Chassis After Installing the M120 Router Without a Mechanical Lift on page 71

Tools and Parts Required to Install the M120 Router Without a Mechanical Lift

To install the router, you need the following tools and parts:

•

Phillips (+) screwdrivers, numbers 1 and 2

•

3/8-in. nut driver

•

ESD grounding wrist strap

Documentation

M120 Router Chassis Description on page 6•

• M120 Router Installation Summary on page 43

• M120 Chassis Lifting Guidelines on page 195

• General Safety Warnings for M Series, MX Series, and T Series Routers on page 190

• Removing Components from the Chassis Before Installing the M120 Router Without a

Mechanical Lift on page 59

Removing Components from the Chassis Before Installing the M120 Router Without a Mechanical Lift

To make the router light enough to install manually, you first remove most components from the chassis. The procedures in this section for removing components from the chassis are for initial installation only, and assume that you have not connected power

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M120 Multiservice Edge Router Hardware Guide

cables to the router. Remove components from the chassis, first from the rear and then from the front.

•

Removing the Power Supplies on page 60

•

Removing FEBs on page 61

•

Removing CBs on page 62

•

Removing a Fan Tray on page 63

•

Removing the Cable Management System on page 65

•

Removing FPCs on page 66

•

Removing a CFPC on page 67

Removing the Power Supplies

The power supplies are located vertically at the rear of the chassis to the right of CB1. Each power supply weighs approximately 8.4 lb (3.8 kg).

Remove the left power supply first and then the right power supply. To remove the AC or DC power supplies:

1. Attach anelectrostatic discharge(ESD) grounding strapto yourbare wrist,and connect

the strap to an approved site ESD grounding point. See the instructions for your site.

2. Switch the circuit breaker on a DC power supply faceplate to the off position (O). For

an AC power supply, switch the power switchto the standby position. We recommend this even though the power supplies are not connected to power sources.

3. Loosen the captive screw on each flange at the top and bottom of the power supply

faceplate completely.

4. Graspthe handleon the power supply and pull firmly. Slide ithalfway out of thechassis

(see Figure 26 on page 61, which shows the removal of DC power supplies).

5. Place one hand underneath the power supply to support it and slide it completely out

of the chassis.

CAUTION: Each power supply weighs approximately 8.4 lb (3.8 kg). Be

prepared to support the full weight of the power supply as you remove it from the router.

6. Repeat the procedure for the remaining power supply.

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A CTIVEFPC

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MSTR

ONLINE/

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ONLINE/

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A CTIVEFP

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RESET

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OFF

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-48V

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Chapter 7: Installing the M120 Router Without a Mechanical Lift

Figure 26: Removing a Power Supply Before Installing the M120 Router

Removing FEBs

Six FEBs are installed in the router. The FEBs are located in the rear of the chassis in the slots marked FEB0 through FEB5. Each FEB weighs approximately 4.5 lb (2.0 kg).

To remove the FEBs (see Figure 27 on page 62):

1. Place an electrostatic bag or antistatic mat on a flat, stable surface.

2. Attach anelectrostatic discharge(ESD) grounding strapto yourbare wrist,and connect

the strap to an approved site ESD grounding point. See the instructions for your site.

3. Loosen the captive screws (using a Phillips (+) screwdriver, number 2) on the ejector

handles on each side of the FEB faceplate.

4. Flip the ejector handles outward to unseat the FEB.

5. Grasp both ejector handles, pull firmly, and slide the FEB about three-quarters of the

way out of the chassis.

6. Place one hand underneath the FEB to support it and slide it completely out of the

chassis. Place it on the antistatic mat.

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M120 Multiservice Edge Router Hardware Guide

7. Repeat the procedure for each of the remaining FEBs.

Figure 27: Removing a FEB Before Installing the M120 Router

CAUTION: Do not stack hardware components on one another after you remove them. Place each component on an antistatic mat resting on a stable, flat surface.

Removing CBs

The router can have one or two CBs. They are located in the right rear of the chassis in the slots marked CB0 and CB1. Each CB weighs approximately 6.9 lb (3.1 kg).

To remove the CBs (see Figure 28 on page 63):

1. Place an electrostatic bag or antistatic mat on a flat, stable surface.

2. Attach anelectrostatic discharge(ESD) grounding strapto yourbare wrist,and connect

the strap to an approved site ESD grounding point. See the instructions for your site.

3. Loosen the captive screws on the ejector handles on both sides of the CB faceplate.

4. Simultaneously rotate the ejector handles counterclockwise to unseat the CB.

5. Grasp the ejector handles and slide the CB about halfway out of the chassis.

6. Place one hand underneath the CB to support it and slide it completely out of the

chassis. Place it on the antistatic mat.

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Chapter 7: Installing the M120 Router Without a Mechanical Lift

CAUTION: Do not stack hardware components on one another after you

remove them. Place each component on an antistatic mat resting on a stable, flat surface.

7. Repeat the procedure for the second CB.

Figure 28: Removing a CB Before Installing the M120 Router

Removing a Fan Tray

In the front of the chassis, the upper fan tray is located above the FPC card cage, and the lowerfan tray islocatedbelow the FPC card cage. Eachfan tray weighsabout 7lb (3.2kg). In the rear of the chassis, the upper fan tray is located above the rear card cage, and the lower fan tray is located below the rear card cage. Each fan tray weighs about 5.3 lb (2.4 kg).

To remove any fan tray (see Figure 29 on page 64 and Figure 30 on page 65, which illustrate the upper front fan tray and lower rear fan tray):

1. Attach anelectrostatic discharge(ESD) grounding strapto yourbare wrist,and connect

the strap to an approved site ESD grounding point. See the instructions for your site.

2. If removing the lower front fan tray, simultaneously pullthe tworeleaseslabeled PULL

on the cable management system. Lift it up and outward to lock it in place.

3. Loosen the captive screw on each side of the fan tray faceplate.

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M120 Multiservice Edge Router Hardware Guide

4. Grasp the handle and pull the fan tray out approximately 1 to 3 inches.

5. Pause for approximately 15 seconds to allow the fans to stop spinning.

6. When the fans stop spinning, place one hand under the fan tray to support it and pull

the fan tray completely out of the chassis.

Figure 29: Removing an Upper Front Fan Tray Before Installing the M120 Router

WARNING: To avoid injury, keep tools and your fingersaway from the fans asyou slide the fan trayout of the chassis.The fansmight still be spinning.

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Chapter 7: Installing the M120 Router Without a Mechanical Lift

Figure 30: Removing a Lower Rear Fan Tray Before Installing the M120 Router

Removing the Cable Management System

The cable management system is located below the FPC card cage. The cable management system weighs approximately 5 lb (2.3 kg).

To remove the cable management system (see Figure 31 on page 66):

1. Attach anelectrostatic discharge(ESD) grounding strapto yourbare wrist,and connect

the strap to an approved site ESD grounding point. See the instructions for your site.

2. Using a 3/8-in. nut driver, unscrew the nuts on the corners of the cable management

system.

3. Grasp the bottom of the cable management system and pull it straight out from the

studs on the front of the chassis.

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M120 Multiservice Edge Router Hardware Guide

Figure 31: Removing the Cable Management System Before Installing the M120 Router

Removing FPCs

The router holds up to four FPCs, which are installed vertically in the front of the router. An empty FPC weighs 9.0 lb (4.0 kg). A fully configured FPC can weigh up to

12.3 lb (5.6 kg).

Each FPC slot not occupied by an FPC must be covered by an FPC blank panel. An FPC blank panel weighs 7.7 lb (3.5 kg).

To remove an FPC (see Figure 32 on page 67):

1. Place an electrostatic bag or antistatic mat on a flat, stable surface.

2. Attach anelectrostatic discharge(ESD) grounding strapto yourbare wrist,and connect

the strap to an approved site ESD grounding point. See the instructions for your site.

3. Before removing the FPCs, record their location in the chassis so that you can reinstall

each FPC in the correct slot.

4. Simultaneously turn both the ejector handles counterclockwise to unseat the FPC.

5. Grasp the handles and slide the FPC straight out of the card cage halfway.

6. Place one hand around the front of the FPC (the PIC housing) and the other hand

under it to support it. Slide the FPC completely out of the chassis, and place it on the antistatic mat or in the electrostatic bag.

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Chapter 7: Installing the M120 Router Without a Mechanical Lift

CAUTION: The weight of the FPC is concentrated in the back end. Be

prepared to accept the full weight—up to 12.3 lb (5.6 kg)—asyou slide the FPC out of the chassis.

When the FPC is out of the chassis, do not hold it by the ejector handles, bus bars, or edge connectors. They cannot support its weight.

Do not stack FPCs on top of one another after removal. Place each one individually in an electrostatic bag or on its own antistatic mat on a flat, stable surface.

7. Repeat the procedure for each remaining FPC.

Figure 32: Removing an FPC Before Installing the M120 Router

Removing a CFPC

The router holds up to two CFPCs, which are installed vertically in the front of the router.

To remove a CFPC (see Figure 33 on page 68):

1. Place an electrostatic bag or antistatic mat on a flat, stable surface.

2. Attach anelectrostatic discharge(ESD) grounding strapto yourbare wrist,and connect

the strap to an approved site ESD grounding point. See the instructions for your site.

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M120 Multiservice Edge Router Hardware Guide

3. Pull the lower end of the ejector lever away from the CFPC faceplate to unseat the

CFPC.

4. Continue to pull the lever toward you and slide the CFPC straight out of the card cage

halfway.

5. Place one hand around the front of the CFPC and the other hand under it to support

it. Slide the CFPC completely out of the chassis, and place it on the antistatic mat or in the electrostatic bag.

Figure 33: Removing a CFPC Before Installing the M120 Router

CAUTION: When theCFPC is outof the chassis,do not holdit bythe ejector handle, bus bars, or edge connectors. They cannot support its weight.

Placeeach individual CFPC in an individual electrostaticbag or on its own antistatic mat on a flat, stable surface.

Documentation

M120 Router Chassis Description on page 6•

• M120 Router Physical Specifications on page 225

• M120 Chassis Lifting Guidelines on page 195

• General Safety Warnings for M Series, MX Series, and T Series Routers on page 190

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Chapter 7: Installing the M120 Router Without a Mechanical Lift

Installing the M120 Router Without Using a Mechanical Lift

If you cannot use a mechanical lift to install the router (the preferred method), you can install it manually.

Before installing the router manually:

1. Read the safety information in “M120 Chassis Lifting Guidelines” on page 195.

2. Prepare your site and review the guidelines in “M120 Site Preparation Checklist” on

page 37

3. Remove the router from the shipping container as described in “Unpacking the M120

Router” on page 44.

4. Install the mounting hardware as described in “Installing the Mounting Hardware for

5. Remove components from the chassis.

To install the router in the rack (see Figure 34 on page 70):

CAUTION: If you are installing two or three routers in one rack, install the

lowest one first. Installing a router in the upper position in a rack or cabinet requires a lift.

CAUTION: Before front mounting the router in a rack, have a qualified technician verify that the rack is strong enough to support the router's weight and is adequately supported at the installation site.

CAUTION: Lifting the chassis and mounting it in a rack requires three people. The empty chassis weighs approximately 110 lb (49 kg).

1. Ensure that the rack is in its permanent location and is secured to the building. Ensure

that the installationsite allows adequate clearance for both airflow andmaintenance. For details, see “M120 Clearance Requirements forAirflowand HardwareMaintenance” on page 41.

2. Position the router in front of the rack or cabinet, centering it in front of the mounting

shelves. Use a pallet jack if one is available.

3. With one person on each side and one person in the front, hold onto the bottom of

the chassis and carefully liftit ontothe large andsmall (if installed) mountingshelves.

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4. Slide the router onto the mounting shelves until the mounting brackets or

5. If you are installing the router in a four-post rack or cabinet, install a mounting screw

6. Visually inspect the alignment of the router. If the router is installed properly in the

rack, all the mounting screws on one side of the rack should be aligned with the mounting screws on the opposite side and the router should be level.

WARNING: To prevent injury, keep your back straight and lift with your

legs, not your back. Avoid twisting your body as you lift. Balance the load evenly and be sure that your footing is solid.

Figure 34: Installing the M120 Router in the Rack

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Chapter 7: Installing the M120 Router Without a Mechanical Lift

NOTE: This illustration depicts the router being installed in an open-frame

rack. For an illustration of the mounting hardware required for a four-post rack or cabinet, see Figure 23 on page 51.

Documentation

M120 Router Chassis Description on page 6•

• M120 Router Physical Specifications on page 225

• General Safety Warnings for M Series, MX Series, and T Series Routers on page 190

• General Safety Guidelines for M Series, MX Series, and T Series Routers on page 189

Reinstalling Components in the Chassis After Installing the M120 Router Without a Mechanical Lift

After the router is installed in the rack, you reinstall the removed components before booting and configuring the router. Reinstall the components in the chassis, first in the rear and then in the front:

Reinstalling CBs on page 71

Reinstalling the FEBs on page 72

Reinstalling the Power Supplies on page 73

Reinstalling FPCs on page 74

Reinstalling a CFPC on page 75

Reinstalling the Fan Trays on page 77

Reinstalling the Cable Management System on page 77

Reinstalling CBs

To reinstall CBs (see Figure 35 on page 72):

1. Attach anelectrostatic discharge(ESD) grounding strapto yourbare wrist,and connect

the strap to an approved site ESD grounding point. See the instructions for your site.

2. Carefully align the sides of the CB with the guides inside the chassis.

3. Slide the CB into the chassis, carefully ensuring that it is correctly aligned.

4. Grasp both ejector handles and rotate them simultaneously clockwise until the CB is

fully seated.

5. Tighten the captive screws on the ejector handles, using a Phillips (+) screwdriver,

number 2.

6. Repeat the procedure to reinstall the remaining CB.

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M120 Multiservice Edge Router Hardware Guide

Figure 35: Reinstalling a CB After Installing the M120 Router

Reinstalling the FEBs

To reinstall the FEBs (see Figure 36 on page 73):

1. Attach anelectrostatic discharge(ESD) grounding strapto yourbare wrist,and connect

the strap to an approved site ESD grounding point. See the instructions for your site.

2. Place one hand underneath the FEB to support it. With the other hand, hold one of

the ejector handles on the FEB faceplate.

3. Carefully align the sides of the FEB with the guides inside the chassis.

4. Carefully slide the FEB into the chassis, ensuring that it is correctly aligned.

5. Grasp both ejector handles and press them inward to seat the FEB.

6. Tighten the captive screws on the ejector handles.

7. Repeat the procedure for each of the remaining FEBs.

Juniper M120 Hardware Manual

Specifications and Main Features

Frequently Asked Questions

User Manual