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Juniper Internet Router M160 Hardware Manual

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M160 Internet Router

Hardware Guide

Juniper Networks®, Inc.
1194 North Mathilda Avenue
Sunnyvale, California
94089
USA
408-745-2000
www.juniper.net
Part Number: 530-007250-01, Revision 5

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Summary of Contents for Juniper Internet Router M160

  • Page 1: Hardware Guide

    M160 Internet Router Hardware Guide Juniper Networks®, Inc. 1194 North Mathilda Avenue Sunnyvale, California 94089 408-745-2000 www.juniper.net Part Number: 530-007250-01, Revision 5...
  • Page 2 The information in this document is current as of the date listed in the revision history. 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.
  • Page 3 SOFTWARE, AND (B) YOU MAY CONTACT JUNIPER NETWORKS REGARDING LICENSE TERMS. The Parties. The parties to this Agreement are Juniper Networks, Inc. and its subsidiaries (collectively "Juniper"), and the person or organization that originally purchased from Juniper or an authorized Juniper reseller the applicable license(s) for use of the Software ("Customer") (collectively, the "Parties").
  • Page 4 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. If you have any questions about this agreement, contact Juniper Networks at the following address: Juniper Networks, Inc.

  • Page 5: Table Of Contents

    Table of Contents About This Guide Objectives ................xix Audience..
  • Page 6 M160 Internet Router Hardware Guide Host Module LEDs ............. 31 FPC LEDs and Offline Button ..
  • Page 7 Fire Suppression .............. . 63 Fire Suppression Equipment ..........64 Power Guidelines, Requirements, and Specifications .
  • Page 8 M160 Internet Router Hardware Guide Reinstalling the SFMs ............108 Reinstalling the Rear Component Cover ........109 Reinstalling the Power Supplies..
  • Page 9 Removing the Fan Tray ..........148 Installing the Fan Tray ...........149 Replacing the Front Impeller Assembly .
  • Page 10 Blown Fuse Indicators ............211 Juniper Networks Technical Assistance Center ......212 Troubleshooting the Cooling System .
  • Page 11 Maintenance and Operational Safety Guidelines and Warnings ..247 Agency Approvals..............253 Compliance Statements for EMC Requirements ..
  • Page 12 M160 Internet Router Hardware Guide Table of Contents...
  • Page 13 List of Figures Figure 1: Front of Chassis ............... . 8 Figure 2: Rear of Chassis with Component Cover in Place .
  • Page 14 M160 Internet Router Hardware Guide Figure 50: Reinstalling the Rear Upper Impeller Assembly........105 Figure 51: Reinstalling a Routing Engine .
  • Page 15 List of Figures Figure 103: Installing a Power Supply ............200 Figure 104: Disconnecting Power Cables .
  • Page 16 M160 Internet Router Hardware Guide List of Figures...
  • Page 17 Table 3: Juniper Networks Technical Documentation ........
  • Page 18 M160 Internet Router Hardware Guide xviii List of Tables...

  • Page 19: About This Guide

    Objectives This manual describes hardware installation and basic troubleshooting procedures for the Juniper Networks M160 Internet router. It explains how to prepare your site for router installation, unpack and install the hardware, power on the router, perform initial software configuration, and perform routine maintenance. After...

  • Page 20: Table 1: Notice Icons

    M160 Internet Router Hardware Guide Table 1: Notice Icons Icon Table 2 defines the text and syntax conventions used in this guide. Table 2: Text and Syntax Conventions Convention Bold sans serif typeface Fixed-width typeface Italic typeface Italic sans serif typeface Sans serif typeface <...

  • Page 21: Table 3: Juniper Networks Technical Documentation

    Table 3 lists the software and hardware guides and release notes for Juniper Networks routing platforms that use the JUNOS Internet software and describes the contents of each book. Table 3: Juniper Networks Technical Documentation Book JUNOS for J-series, M-series, and T-series Routing Platforms Configuration Guides...
  • Page 22 JUNOS software modules and provides a reference page for each message. Describes how to use the JUNOScript application programming interface (API) to monitor and configure Juniper Networks routers. Provides reference pages for the configuration tags in the JUNOScript API.
  • Page 23 Book J-series Services Router Documentation J-series Services Router User Guide Release Notes JUNOS Internet Software Release Notes Hardware Release Notes JUNOScope Software Release Notes J-series Services Router Release Notes Documentation Feedback We encourage you to provide feedback, comments, and suggestions so that we can improve the documentation.
  • Page 24 M160 Internet Router Hardware Guide xxiv Requesting Support...

  • Page 25: Product Overview

    Part 1 Product Overview System Overview on page 3 Hardware Component Overview on page 7 JUNOS Internet Software Overview on page 43 System Architecture Overview on page 51 Product Overview...
  • Page 26 Product Overview...

  • Page 27: System Overview

    Chapter 1 System Overview This chapter provides an overview of the Juniper Networks M160 Internet router, discussing the following topics: System Description on page 3 Field-Replaceable Units (FRUs) on page 4 System Redundancy on page 4 Safety Requirements, Warnings, and Guidelines on page 5...

  • Page 28: Field-Replaceable Units (Frus)

    M160 Internet Router Hardware Guide Field-Replaceable Units (FRUs) Field-replaceable units (FRUs) are router components that can be replaced at the customer site. Replacing most FRUs requires minimal router downtime. The router uses the following types of FRUs: Hot-removable and hot-insertable FRUs—You can remove and replace these components without powering down the router or disrupting the routing functions.

  • Page 29: Safety Requirements, Warnings, And Guidelines

    system can function at the higher speed indefinitely. For more information, see Cooling System on page 39. Host module (Routing Engine and MCS functioning together)—The router can have one or two host modules. If two host modules are installed, one (the master) is active and the other is in standby mode.
  • Page 30 M160 Internet Router Hardware Guide Safety Requirements, Warnings, and Guidelines...

  • Page 31: Chapter 2 Hardware Component Overview

    Chapter 2 Hardware Component Overview This chapter provides an overview of the hardware components on the M160 Internet router: Chassis on page 7 Packet Forwarding Engine on page 11 Host Module on page 22 Craft Interface on page 27 Connector Interface Panel (CIP) on page 32 Power System on page 35 Cooling System on page 39 Cable Management System on page 41...

  • Page 32: Figure 1: Front Of Chassis

    M160 Internet Router Hardware Guide Figure 1: Front of Chassis Craft interface FPCs ESD point Cable management system Air filter Chassis...

  • Page 33: Figure 2: Rear Of Chassis With Component Cover In Place

    Figure 2: Rear of Chassis with Component Cover in Place Component cover ESD point Lower impeller Power supplies Hardware Component Overview Upper impeller PC G 0 PC G 1 Grounding points Circuit breaker box Chassis...

  • Page 34: Figure 3: Rear Of Chassis With Component Cover Removed

    M160 Internet Router Hardware Guide Figure 3: Rear of Chassis with Component Cover Removed SFMs MCS 0 Routing Engines MCS 1 SFMs The chassis includes the following electrical safety components: Two electrostatic discharge (ESD) points (banana plug receptacles), one front and one rear, as shown in Figure 1 and Figure 2 Two internally threaded grounding points, as shown in Figure 2 WARNING: Before removing or installing components of a functioning router, attach...

  • Page 35: Packet Forwarding Engine

    For further safety information, see “Safety and Regulatory Compliance Information” on page 221. Table 5 summarizes physical specifications for the router chassis. Table 5: Chassis Physical Specifications Description Value 35 in. (89 cm) Chassis height Chassis width 17.5 in. (44.5 cm) for sides of chassis 19 in.

  • Page 36: Midplane

    M160 Internet Router Hardware Guide an entire FPC slot in the chassis and insert directly into the slot rather than into an FPC card carrier.) Flexible PIC Concentrator (FPC)—Processes incoming and outgoing packets. Up to eight FPCs plug into the midplane from the front of the chassis. Each FPC accommodates up to four PICs.

  • Page 37: Physical Interface Cards (Pics)

    Figure 4: Midplane Midplane card cage Physical Interface Cards (PICs) Physical Interface Cards (PICs) physically connect the router to network media. They are housed in Flexible PIC Concentrators (FPCs); for more information about FPCs, see “Flexible PIC Concentrators (FPCs)” on page 14.

  • Page 38: Pic Components

    M160 Internet Router Hardware Guide Some PICs, such as selected Gigabit Ethernet PICs, accept small form factor pluggables (SFPs), which are fiber-optic transceivers that can be removed from the PIC. Various SFPs have different reach characteristics. You can mix them in a single PIC and change the combination dynamically.

  • Page 39: Figure 5: Front Of Chassis With Four-Pic Fpc Installed In Slot Fpc0

    slot is empty, you must install a blank FPC panel to shield it, so that cooling air can circulate properly throughout the card cage. Figure 5, which shows a chassis with an FPC in slot panels to show the position of the FPC in the card cage. Figure 5: Front of Chassis with Four-PIC FPC Installed in Slot FPC0 For information about FPC components and types, see the following sections: FPC Components on page 16...

  • Page 40: Fpc Components

    M160 Internet Router Hardware Guide FPC Components An FPC has the following components: FPC card carrier—Houses the ASICs, connectors, and processor subsystem. Four I/O Manager ASICs—Parse Layer 2 and Layer 3 data and perform encapsulation and segmentation. The I/O Manager ASICs divide incoming packets into 64-byte data cells for easier processing, and reassemble the cells for each packet after the forwarding decision is made for it.

  • Page 41: Fpc Types

    FPC Types The router supports two types of FPC, shown in Figure 6: FPC1 (standard or enhanced)—Supports PICs including single-port OC-12/STM-4 and Gigabit Ethernet. FPC2 (standard or enhanced)—Supports higher-speed PICs including OC-48/STM-16 and Tunnel services. You can install any combination of FPC types together on the router. FPCs are hot-removable and hot-insertable, as described in Field-Replaceable Units (FRUs) on page 4.

  • Page 42: Packet Forwarding Engine Clock Generators (Pcgs)

    M160 Internet Router Hardware Guide Figure 6: FPC1 and FPC2 FPC 1 Ejector lever Offline buttons (on FPC) Ejector lever Packet Forwarding Engine Clock Generators (PCGs) The router has two Packet Forwarding Engine Clock Generators (PCGs) installed in the slots at the rear of the chassis that are labeled in Figure 3.

  • Page 43: Pcg Components

    PCG Components Each PCG (shown in Figure 7) has the following components: Signal generator—Provides a 125-MHz system clock signal. EEPROM—Stores the serial number and revision level of the PCG. Three LEDs—Indicate PCG status. There is a blue one labeled one labeled Offline button—Prepares the PCG for removal from the router when pressed.

  • Page 44: Sfm Components

    M160 Internet Router Hardware Guide The SFM communicates with the Routing Engine using a dedicated 100-Mbps Fast Ethernet link that transfers routing table data from the Routing Engine to the forwarding table in the Internet Processor II ASIC. The link is also used to transfer from the SFM to the Routing Engine routing link-state updates and other packets destined for the router that have been received through the router interfaces.

  • Page 45: Figure 8: Switching And Forwarding Module

    FPCs, while the second forwards notification of routing decisions to the I/O Manager ASICs. One Internet Processor II ASIC—Performs route lookups and makes routing decisions. Parity-protected SSRAM—Stores the forwarding table. Processor subsystem—Manages SFM functions and handles exception packets. The processor has the following components: EEPROM—Stores the serial number and revision level.

  • Page 46: Host Module

    M160 Internet Router Hardware Guide Table 7: States for SFM LEDs Label Color Green FAIL Amber Host Module The host module constructs routing tables, performs system management functions, and generates the SONET/SDH clock signal for SONET/SDH interfaces. It consists of a paired Routing Engine and Miscellaneous Control Subsystem (MCS). For a host module to function, both of its components—Routing Engine and MCS—must be installed and operational.

  • Page 47: Routing Engine

    For host module replacement instructions, see “Replacing an MCS” on page 159 and “Replacing a Routing Engine” on page 165. Note that the effect of a hardware or software failure on one or both components in the master host module differs from the effect of removing a component that belongs to the master host module: With the default router configuration, in case of failure you must correct the problem manually.

  • Page 48: Routing Engine Components

    M160 Internet Router Hardware Guide the master and which is in standby mode (and so performs no functions). By default, the Routing Engine in the slot labeled Routing Engine also determines which of the two PCGs is the master. The Routing Engine is hot-pluggable, as described in Field-Replaceable Units (FRUs) on page 4.

  • Page 49: Miscellaneous Control Subsystem (Mcs)

    document that depict the Routing Engine. These differences do not affect Routing Engine installation and removal or functionality. For specific information about Routing Engine components (for example, the amount of SDRAM), issue the NOTE: If two Routing Engines are installed, they must both be the same version. Figure 9: Routing Engine Routing Engine 333 Extractor clip...

  • Page 50: Mcs Components

    M160 Internet Router Hardware Guide or sets an alarm. The MCS also relays control messages from the Routing Engine to the router components. Controlling component power-up and power-down—The MCS controls the power-up sequence of router components as they start, and powers down components when their offline buttons are pressed.

  • Page 51: Craft Interface

    Figure 10: Miscellaneous Control Subsystem Extractor clip Offline button Table 8: States for MCS LEDs Label Color MASTER Blue Green FAIL Amber Craft Interface The craft interface provides status and troubleshooting information at a glance and has buttons for deactivating alarms and preparing FPCs for removal. The craft interface is located on the front of the chassis above the FPC card cage, as shown in Figure 1.

  • Page 52: Alarm Leds And Alarm Cutoff/Lamp Test Button

    M160 Internet Router Hardware Guide Figure 11: Craft Interface Yellow alarm Red alarm Alarm cutoff button ACO/LT FAIL FAIL FAIL FPC 0 FPC 1 FPC 2 NOTE: The LEDs for some router components are located on the component faceplate, rather than on the craft interface. For information about those LEDs, see the following sections: “PCG Components”...

  • Page 53: Lcd And Navigation Buttons

    Relay Contacts” on page 34. The LCD on the craft interface reports the cause of the alarm, as described in “LCD Alarm Mode” on page 30. To deactivate red and yellow alarms, press the button labeled cutoff/lamp test”), which is located to the left of the alarm LEDs. Deactivating an alarm turns off both LEDs and deactivates the device attached to the corresponding alarm relay contact on the CIP.

  • Page 54: Lcd Alarm Mode

    M160 Internet Router Hardware Guide Figure 12: LCD in Idle Mode MENU ENTER The lines in the display report the following information: First line—Routing node name. Second line—Length of time the router has been running, reported in the following form: Third and fourth lines—Status messages, which rotate at two-second intervals.

  • Page 55: Host Module Leds

    The lines in the display report the following information: First line—Routing node name. Second line—Number of active alarms. Third and fourth lines—Individual alarm messages, with the most severe condition shown first. The prefix on each line indicates whether the alarm is a red ( For a list of alarm messages that can appear on the LCD, see “Chassis and Interface Alarm Messages”...

  • Page 56: Connector Interface Panel (Cip)

    M160 Internet Router Hardware Guide Table 11: States for FPC LEDs Label Color Green FAIL Connector Interface Panel (CIP) The Connector Interface Panel (CIP) is located at the left side of the FPC card cage, as shown in Figure 1. It houses Routing Engine management ports and alarm relay contacts, as shown in Figure 14 and described in the following sections: Routing Engine Management Ports on page 33 BITS Input Ports on page 34...

  • Page 57: Routing Engine Management Ports

    Figure 14: Connector Interface Panel Routing Engine Management Ports On the upper half of the CIP are two sets of ports for connecting the Routing Engines to one or more external devices on which system administrators can issue JUNOS command-line interface (CLI) commands to manage the router. The set of ports labeled set labeled HOST...

  • Page 58: Bits Input Ports

    M160 Internet Router Hardware Guide The ports with the indicated label in each set function as follows: ETHERNET 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.

  • Page 59: Power System

    YELLOW ALARM alarm LED to light on the craft interface also activates the corresponding alarm relay contact. For instructions for attaching a device to the alarm relay contacts, see “Connecting to an External Alarm-Reporting Device” on page 115. Figure 16: Alarm Relay Contacts and BITS Input Ports Power System The router uses DC power.

  • Page 60: Power Supply

    M160 Internet Router Hardware Guide the Routing Engine finishes booting and you need to power down the router again, first issue the CLI “Disconnecting Power from the Router” on page 200. After a power supply is powered on, it can take up to 60 seconds for status indicators—such as LEDs on the power supply, messages on the craft interface LCD—to indicate that the power supply is functioning normally.

  • Page 61: Figure 17: Original Power Supply

    Figure 17: Original Power Supply Figure 18: Enhanced Power Supply Table 12: States for Power Supply LEDs Label Color Green CB ON OUTPUT OK Blue State Description On steadily Power supply is inserted correctly and is receiving power. Circuit breaker is on. On steadily Power supply is inserted and is functioning normally.

  • Page 62: Circuit Breaker Box

    M160 Internet Router Hardware Guide Label Color Amber AIRFLOW (original power supply only) CB OFF Amber Table 13 lists electrical specifications for the power supply. Table 13: Electrical Specifications for Power Supply Description Maximum power output DC input voltage DC input current rating Output voltages Circuit Breaker Box The circuit breaker box is located on the rear of the chassis, above the...

  • Page 63: Fuses

    Figure 19: Circuit Breaker Box Fuses The router uses fuses from the Cooper Bussman brand GMT series for the FPCs, MCSs, PCGs, and SFMs. The fuses are located in a fuse box on the rear of the midplane. When the fuse for a component blows, the component stops functioning even though it is installed correctly and the power supplies are providing power to the router.

  • Page 64: Cooling System Components

    M160 Internet Router Hardware Guide Cooling System Components The cooling system has the following components. All are hot-removable and hot-insertable, as described in Field-Replaceable Units (FRUs) on page 4. Air intake vent, air filter, and intake cover—Provide an opening for room air to enter the router.

  • Page 65: Cable Management System

    Figure 20: Airflow through the Chassis Front view Impeller Card cage Air intake cover Cable Management System The cable management system (see Figure 21) consists of a row of nine semicircular plastic bobbins mounted on the front of the router below the FPC card cage.
  • Page 66 M160 Internet Router Hardware Guide Cable Management System...

  • Page 67: Junos Internet Software Overview

    Chapter 3 JUNOS Internet Software Overview The JUNOS Internet software is especially designed for the large production networks typically supported by Internet Service Providers (ISPs). It incorporates Internet Protocol (IP) routing software and software for management of interfaces, networks, and the router chassis. The JUNOS Internet software runs on the Routing Engine.

  • Page 68: Routing Protocol Process

    M160 Internet Router Hardware Guide VPNs on page 48 Interface Process on page 49 Chassis Process on page 49 SNMP and MIB II Processes on page 49 Management Process on page 49 Routing Engine Kernel on page 49 Routing Protocol Process The JUNOS software routing protocol process controls the routing protocols that run on the router.
  • Page 69 with JUNOS routing policy, provides a system of administrative checks and balances that can be used to implement peering and transit agreements. ICMP—Internet Control Message Protocol router discovery is a method that hosts can use to discover the addresses of operational routers on a subnet.

  • Page 70: Ipv6 Routing Protocols

    M160 Internet Router Hardware Guide IPv6 Routing Protocols The JUNOS Internet software implements full IP routing functionality, providing support for IP version 6 (IPv6). The routing protocols are fully interoperable with existing IP routing protocols and provide the scale and control necessary for the Internet core.

  • Page 71: Routing And Forwarding Tables

    Routing and Forwarding Tables The primary function of the JUNOS routing protocol process is maintaining routing tables and using the information in them to determine active routes to network destinations. It copies information about the active routes into the Routing Engine’s forwarding table, which the JUNOS kernel copies to the Packet Forwarding Engine.

  • Page 72: Vpns

    M160 Internet Router Hardware Guide In addition, IGPs (IS-IS, OSPF, and RIP) export the direct (interface) routes for the interfaces on which the protocol is explicitly configured. For each routing table, you can affect the routes that a protocol places into the table and the routes from the table that the protocol advertises by defining one or more routing policies and then applying them to the specific routing protocol.

  • Page 73: Interface Process

    by a VPN customer with connections to several various ISPs, or different connections to the same ISP in various geographic regions. Carrier-of-Carrier VPNs—Carrier-of-carrier VPNs allow a VPN service provider to supply VPN service to a customer who is also a service provider. The latter service provider supplies Internet or VPN service to an end customer.

  • Page 74: Tools For Accessing And Configuring The Software

    M160 Internet Router Hardware Guide Tools for Accessing and Configuring the Software The JUNOS CLI is the primary tool for accessing and controlling the JUNOS Internet software. You use it when accessing the router through the console or a connection to an out-of-band management network.

  • Page 75: System Architecture Overview

    Chapter 4 System Architecture Overview The router architecture consists of two major components: Packet Forwarding Engine—Performs Layer 2 and Layer 3 packet switching, route lookups, and packet forwarding. Routing Engine—Provides Layer 3 routing services and network management. The Packet Forwarding Engine and the Routing Engine perform independently but communicate constantly through a 100-Mbps internal link.

  • Page 76: Data Flow Through The Packet Forwarding Engine

    M160 Internet Router Hardware Guide The Packet Forwarding Engine architecture includes the following components: Midplane—Transports packets, notifications, and other signals between the FPCs and the Packet Forwarding Engine (as well as other system components). Physical Interface Card (PIC)—Physically connects the router to fiber-optic or digital network media.

  • Page 77: Routing Engine Architecture

    Routing Engine Architecture The Routing Engine is an Intel-based PCI platform running the JUNOS Internet software, which Juniper Networks has developed and optimized to handle large numbers of network interfaces and routes. The software consists of a set of system processes running in protected memory modules on top of an independent operating system.

  • Page 78: Routing Engine Functions

    M160 Internet Router Hardware Guide Figure 24: Routing Engine Architecture System management JUNOS processes software Routing Engine Functions The Routing Engine handles all routing protocol processes, as well as the software processes that control the router’s interfaces, the chassis components, system management, and user access to the router. These routing and software processes run on top of a kernel that interacts with the Packet Forwarding Engine.

  • Page 79: Figure 25: Control Packet Handling For Routing And Forwarding Table Updates

    JUNOS Internet software can efficiently support large numbers of interfaces and virtual circuits. Management interface—Different levels of system management tools are provided, including the JUNOS command-line interface (CLI), the JUNOScript application programming interface, the craft interface, and SNMP. Storage and change management—Configuration files, system images, and microcode can be held and maintained in primary and secondary storage systems, permitting local or remote upgrades.
  • Page 80 M160 Internet Router Hardware Guide Routing Engine Architecture...
  • Page 81 Part 2 Initial Installation Preparing for Router Installation on page 59 Unpacking the Router on page 77 Installing the Router Using a Mechanical Lift on page 81 Installing the Router without a Mechanical Lift on page 83 Connecting the Router and Performing Initial Configuration on page 111 Initial Installation...

  • Page 82: Initial Installation

    Initial Installation...

  • Page 83: Preparing For Router Installation

    Chapter 5 Preparing for Router Installation This chapter describes how to prepare your site for installation of the M160 Internet router. It discusses the following topics: Rack Requirements on page 59 Clearance Requirements for Airflow and Hardware Maintenance on page 62 Routing Node Environmental Specifications on page 62 Fire Safety Requirements on page 63 Power Guidelines, Requirements, and Specifications on page 64...

  • Page 84: Rack Size And Strength

    M160 Internet Router Hardware Guide Rack Size and Strength The router is designed for installation in a rack that complies with either of the following standards: A 19-in. rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310-D) published by the Electronics Industry Association ( A 600-mm rack as defined in the four-part Equipment Engineering (EE);...

  • Page 85: Spacing Of Mounting Holes

    Figure 26: Typical Center-Mount Rack Spacing of Mounting Holes Table 14 specifies the spacing between mounting holes in the chassis’s front support posts and center-mounting brackets. The mounting holes in a front-mount rack’s rails must align with the holes in the front support posts, and the mounting holes in a center-mount rack’s rails must align with the holes in the center-mounting brackets.

  • Page 86: Connection To Building Structure

    M160 Internet Router Hardware Guide Connection to Building Structure Always secure the rack to the structure of the building. If your geographical area is subject to earthquakes, bolt the rack to the floor. For maximum stability, also secure the rack to ceiling brackets. For more information, see “Rack-Mounting Requirements and Warnings”...

  • Page 87: Fire Safety Requirements

    In addition, you should establish procedures to protect your equipment in the event of a fire emergency. Juniper Networks products should be installed in an environment suitable for electronic equipment. We recommend that fire...

  • Page 88: Fire Suppression Equipment

    NOTE: To keep warranties effective, do not use a dry chemical fire extinguisher to control a fire at or near a Juniper Networks router. If a dry chemical fire extinguisher is used, the unit is no longer eligible for coverage under a service agreement.

  • Page 89: Site Electrical Wiring Guidelines

    Site Electrical Wiring Guidelines When planning the electrical wiring at your site, consider the factors discussed in the following sections. Distance Limitations for Signaling Improperly installed wires can emit radio interference. In addition, the potential for damage from lightning strikes increases if wires exceed recommended distances, or if wires pass between buildings.

  • Page 90: Table 16: Component Power Requirements

    M160 Internet Router Hardware Guide Table 16: Component Power Requirements Component Base system (cooling system, power supplies, and craft interface) Host module (Routing Engine and MCS) You can use the information in Table 16 and the M160 Internet Router PIC Guide to calculate power consumption for various hardware configurations, input current from a different source voltage, and thermal output, as shown in the following examples.

  • Page 91: Chassis Grounding

    Chassis Grounding To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, the router must be adequately grounded before power is connected. A pair of threaded inserts (PEM nuts) are provided on the right rear of the chassis for connecting the router to earth ground. CAUTION: Before router installation begins, a licensed electrician must attach a cable lug to the grounding and power cables that you supply.

  • Page 92: Figure 29: Typical Source Cabling To The Router

    M160 Internet Router Hardware Guide breaker box. You must ensure that power connections maintain the proper polarity. The power source cables might be labeled Figure 29 shows a typical source cabling arrangement. Figure 29: Typical Source Cabling to the Router Chassis grounding points...

  • Page 93: Table 17: Dc Power And Grounding Cable Specifications

    Table 17: DC Power and Grounding Cable Specifications Cable Type Power Grounding WARNING: For field-wiring connections, use copper conductors only. For other electrical safety information, see “Electrical Safety Guidelines and Warnings” on page 227. CAUTION: Power cords and cables must not block access to router components or drape where people could trip on them.

  • Page 94: Network Cable Specifications And Guidelines

    M160 Internet Router Hardware Guide Figure 30: Power and Grounding Cable Connections Flat washer Cable lug Terminal studs For information about the DC power supply, including electrical specifications and a description of components, see “Power Supply” on page 36. For instructions on connecting the DC power and grounding cables during initial installation, see “Connecting Power to the Router”...

  • Page 95: Fiber Optic And Network Cable Specifications

    Fiber Optic and Network Cable Specifications The router supports PICs that use various kinds of network cable, including multimode and single-mode fiber-optic cable. For information about the type of cable used by each PIC, see the M160 Internet Router PIC Guide. Signal Loss in Multimode and Single-Mode Fiber-Optic Cable Multimode fiber is large enough in diameter to allow rays of light to reflect internally (bounce off the walls of the fiber).

  • Page 96: Calculating Power Budget For Fiber-Optic Cable

    M160 Internet Router Hardware Guide Dispersion is the spreading of the signal in time. The following two types of dispersion can affect an optical data link: Chromatic dispersion—The spreading of the signal in time resulting from the different speeds of light rays. Modal dispersion—The spreading of the signal in time resulting from the different propagation modes in the fiber.

  • Page 97: Calculating Power Margin For Fiber-Optic Cable

    Calculating Power Margin for Fiber-Optic Cable After calculating a link’s power budget (using the equation described in “Calculating Power Budget for Fiber-Optic Cable” on page 72), you can calculate the power margin ( available after subtracting attenuation or link loss ( ).

  • Page 98: Attenuating To Prevent Saturation At Sonet/Sdh Pics

    M160 Internet Router Hardware Guide P M = P B – LL P M = 13 dB – 2 km (1.0 dB/km) – 5 (0.5 dB) – 2 (0.5 dB) – 0.5 dB [HOL] – 1 dB [CRM] P M = 13 dB – 2 dB – 2.5 dB – 1 dB – 0.5 dB – 1 dB P M = 6 dB The following sample calculation for an 8 km-long single-mode link with a power budget (...

  • Page 99: Site Preparation Checklist

    Interface Panel (CIP). You can also connect the router to external alarm-reporting devices through the alarm relay contacts on the CIP. (For more information, see Connector Interface Panel (CIP) on page 32.) Table 19 lists the specifications for the cables that connect to management ports and the wires that connect to the alarm relay contacts.
  • Page 100 M160 Internet Router Hardware Guide Item or Task Locate sites for connection of system grounding. Calculate power budget and power margin. Site Preparation Checklist Performed By Date Notes...

  • Page 101: Chapter 6 Unpacking The Router

    Chapter 6 Unpacking the Router This chapter explains how to unpack the router and verify the parts received. Before beginning, prepare the installation site as described in “Preparing for Router Installation” on page 59 and review the safety information in “Safety and Regulatory Compliance Information”...
  • Page 102 M160 Internet Router Hardware Guide While the chassis is bolted to the pallet, you can use a forklift or pallet jack to move it. Position the crate so that the arrows are pointing up. Twist open the locking tabs that secure the crate to the pallet and the front panel to the side panels.

  • Page 103: Table 21: Generic Inventory Of Router Components Installed In Chassis

    Figure 31: Unpacking the Router Table 21: Generic Inventory of Router Components Installed in Chassis Component Front impeller assembly with craft interface FPC with one or more PICs installed Front fan tray with 4 fans and cable management system Midplane Rear upper impeller assembly Routing Engine Rear lower impeller assembly...

  • Page 104: Figure 31: Unpacking The Router

    M160 Internet Router Hardware Guide Unpacking the Router...

  • Page 105: Installing The Router Using A Mechanical Lift

    Chapter 7 Installing the Router Using a Mechanical Lift Because the router weighs between 190 lb (86 kg) and about 370.5 lb (168 kg) depending on configuration, using a mechanical lift to install it is recommended. This chapter provides instructions. If you do not use a lift, see “Installing the Router without a Mechanical Lift”...
  • Page 106 M160 Internet Router Hardware Guide First, perform the following prerequisite procedures: Verify that the router site meets the requirements described in “Preparing for Router Installation” on page 59. Place the rack in its permanent location, allowing adequate clearance for airflow and maintenance, and secure it to the building structure. For details, see Rack Requirements on page 59.

  • Page 107: Installing The Router Without A Mechanical Lift

    Chapter 8 Installing the Router without a Mechanical Lift You can install the router into a rack either with or without the help of a mechanical lift. Because the router weighs between 190 lb (86 kg) and about 370.5 lb (168 kg) depending on configuration, using a mechanical lift is recommended;...

  • Page 108: Tools And Parts Required

    M160 Internet Router Hardware Guide Before installing the chassis, perform the following prerequisite procedures: Verify that the router site meets the requirements described in “Preparing for Router Installation” on page 59. Place the rack in its permanent location, allowing adequate clearance for airflow and maintenance, and secure it to the building structure.
  • Page 109 WARNING: The procedures in this section apply only to initial installation and assume that you have not yet connected power to the router. If power is connected, completely disconnect it before continuing. See “Disconnecting Power from the Router” on page 200. If you are installing or replacing components in an operational router, see “Replacing Hardware Components”...

  • Page 110: Removing The Power Supplies

    M160 Internet Router Hardware Guide Removing the Power Supplies The router has two power supplies located at the bottom rear of the chassis, as shown in Figure 2. A power supply weighs approximately 13 lb (5.9 kg). To remove the power supplies, follow this procedure (see Figure 32): Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.

  • Page 111: Removing The Sfms

    Loosen the thumbscrew at each corner of the component cover, using a Phillips screwdriver if necessary. Pull the cover straight off the chassis. CAUTION: To maintain proper airflow and provide electromagnetic shielding, do not operate the router without the rear component cover in place. Removing the SFMs The router can have an SFM in each of the slots labeled at the rear of the chassis, as shown in Figure 3.

  • Page 112: Removing The Mcss

    M160 Internet Router Hardware Guide Figure 33: Removing an SFM Removing the MCSs The router can have an MCS in each of the slots labeled of the chassis, as shown in Figure 3. Each MCS weighs approximately 2.5 lb (1 kg). To remove the MCSs, follow this procedure (see Figure 34): Place an electrostatic bag or antistatic mat on a flat, stable surface.

  • Page 113: Removing The Pcgs

    Figure 34: Removing an MCS S F M 0 S F M 1 M C S 0 R E 0 Removing the PCGs The router has two PCGs installed in the slots labeled the chassis, as shown in Figure 3. Each PCG weighs approximately 1 lb (0.5 kg). To remove the PCGs, follow this procedure (see Figure 35): Place an electrostatic bag or antistatic mat on a flat, stable surface.

  • Page 114: Removing The Routing Engines

    M160 Internet Router Hardware Guide Figure 35: Removing a PCG S F M 0 S F M 1 M C S 0 R E 0 R E 1 M C S 1 Removing the Routing Engines The router can have a Routing Engine in each of the slots labeled at the rear of the chassis, as shown in Figure 3.

  • Page 115: Removing The Rear Upper Impeller Assembly

    If a second Routing Engine is installed, repeat the procedure to remove it. Figure 36: Removing a Routing Engine S F M 0 S F M 1 M C S 0 R E 0 R E 1 Removing the Rear Upper Impeller Assembly The rear upper impeller assembly is located at the top of the chassis rear, as shown in Figure 2.

  • Page 116: Removing The Rear Lower Impeller Assembly

    M160 Internet Router Hardware Guide Figure 37: Removing the Rear Upper Impeller Assembly Figure 38: Removing the Rear Upper Impeller Assembly Removing the Rear Lower Impeller Assembly The rear lower impeller assembly is located to the left of the circuit breaker box on the rear of the chassis, as shown in Figure 2.

  • Page 117: Removing The Fan Tray

    Grasp the screws at opposite corners of the impeller cover and slide the assembly out of the chassis. Figure 39: Removing the Rear Lower Impeller Assembly Removing the Fan Tray The fan tray is located behind the cable management system on the front of the chassis, just above the air filter, as shown in Figure 1.

  • Page 118: Removing The Fpcs

    M160 Internet Router Hardware Guide Figure 40: Removing the Fan Tray Removing the FPCs The router can have up to eight FPCs mounted vertically in the FPC card cage on the front of the chassis, as shown in Figure 1. An FPC that houses four PICs weighs about 15 lb (6.8 kg).
  • Page 119 Place an electrostatic bag or antistatic mat on a flat, stable surface. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground.

  • Page 120: Removing The Front Impeller Assembly

    M160 Internet Router Hardware Guide Figure 41: Removing an FPC Offline button Ejector levers Removing the Front Impeller Assembly The front impeller assembly, which includes the craft interface, is located at the front of the chassis above the FPC card cage, as shown in Figure 1. The assembly weighs approximately 14.5 lb (6.6 kg).

  • Page 121: Installing The Chassis Into The Rack

    Insert a flat-blade screwdriver into the gap around the craft interface and gently pry the impeller assembly forward until you can grasp the sides of the assembly and slide it halfway out of the chassis. Place one hand under the assembly to support it, slide it completely out of the chassis, and place it on the antistatic mat or in the electrostatic bag.

  • Page 122: Figure 43: Attaching The Lifting Handle

    M160 Internet Router Hardware Guide the chassis in an upper rack space, use the set of holes adjacent to the slots labeled Figure 43: Attaching the Lifting Handle Prepare to lift the router: Lift the chassis and position it in the rack. WARNING: To prevent injury, keep your back straight and lift with your legs, not your back.

  • Page 123: Reinstalling Components Into The Chassis

    Proceed to the instructions in Reinstalling Components into the Chassis on page 99. Figure 44: Installing the Chassis in a Rack Reinstalling Components into the Chassis After you have mounted the chassis in the rack as described in Installing the Chassis into the Rack on page 97, reinstall the router components into the chassis.

  • Page 124: Reinstalling The Front Impeller Assembly

    M160 Internet Router Hardware Guide If you are installing or replacing components in an operational router, see “Replacing Hardware Components” on page 139. Perform the procedures described in the following sections to reinstall components into the chassis, first into the front and then into the rear: Reinstalling the Front Impeller Assembly on page 100 Reinstalling the FPCs on page 101 Reinstalling the Fan Tray on page 102...

  • Page 125: Reinstalling The Fpcs

    Figure 45: Reinstalling the Front Impeller Assembly Reinstalling the FPCs The FPCs install into the card cage at the front of the chassis, as shown in Figure 1. NOTE: To help you work systematically, the following procedure directs you to reinstall FPCs starting at the left side of the card cage and working toward the right.

  • Page 126: Reinstalling The Fan Tray

    M160 Internet Router Hardware Guide Align the rear bottom corners of the FPC with the guides at the bottom of the FPC slot. Slide the FPC into the card cage until it contacts the midplane. Push the ends of the ejector levers inward until they are nearly flush with the face of the FPC.

  • Page 127: Reinstalling The Rear Lower Impeller Assembly

    Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage”...

  • Page 128: Reinstalling The Rear Upper Impeller Assembly

    M160 Internet Router Hardware Guide Figure 48: Reinstalling the Rear Lower Impeller Assembly Rails Reinstalling the Rear Upper Impeller Assembly The rear upper impeller assembly is installed at the top of the chassis rear, as shown in Figure 2. To reinstall the assembly, follow this procedure (see Figure 49 and Figure 50, which show the two types of impeller that can be installed): Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.

  • Page 129: Reinstalling The Routing Engines

    Figure 49: Reinstalling the Rear Upper Impeller Assembly Figure 50: Reinstalling the Rear Upper Impeller Assembly Reinstalling the Routing Engines The router can have a Routing Engine in each of the slots labeled at the rear of the chassis, as shown in Figure 3. RE 1 NOTE: If two Routing Engines are installed, they must both be the same version.

  • Page 130: Reinstalling The Pcgs

    M160 Internet Router Hardware Guide Verify that the extractor clip at each end of the Routing Engine is flipped toward the outer edge of the unit. If necessary, use your thumbs to push and hold the red tab on each extractor clip toward the outer edge, then push the ends of the extractor clips outward.

  • Page 131: Reinstalling The Mcss

    Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage”...

  • Page 132: Reinstalling The Sfms

    M160 Internet Router Hardware Guide Align the rear of the MCS with the guides inside the chassis and slide it in completely. Press the extractor clip at each end of the MCS inward. If there is a second MCS, repeat the procedure to reinstall it. Figure 53: Reinstalling an MCS S F M 0 S F M 1...

  • Page 133: Reinstalling The Rear Component Cover

    If there are additional SFMs, repeat the procedure to reinstall them. Figure 54: Reinstalling an SFM S F M 0 S F M 1 M C S 0 Reinstalling the Rear Component Cover The rear component cover protects the Routing Engines, PCGs, MCSs, and SFMs, as shown in Figure 2.

  • Page 134: Figure 55: Reinstalling A Power Supply

    M160 Internet Router Hardware Guide Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage”...

  • Page 135: Connecting The Router And Performing Initial Configuration

    Chapter 9 Connecting the Router and Performing Initial Configuration After installing the router into the rack as described in “Installing the Router Using a Mechanical Lift” on page 81 or “Installing the Router without a Mechanical Lift” on page 83, complete the installation by connecting management and alarm devices, PICs, and power cables.

  • Page 136: Connecting The Router To Management And Alarm Devices

    M160 Internet Router Hardware Guide CAUTION: Do not substitute a metric nut driver or wrench. A tool that does not fit the nuts exactly can damage them. If a 7/16-in. tool is not available, use pliers or an adjustable wrench. Wire cutters Pliers Electrostatic discharge (ESD) grounding wrist strap...

  • Page 137: Figure 56: Routing Engine Management Ports And Alarm Relay Contacts

    Figure 56: Routing Engine Management Ports and Alarm Relay Contacts HOST ETHERNET YEL=10Mb GRN=100Mb CONSOLE AUXILIARY Routing HOST Engine ports ETHERNET YEL=10Mb GRN=100Mb CONSOLE AUXILIARY BITS A LINK BITS B LINK RED ALARM YELLOW ALARM To connect external devices to the Routing Engine management ports, perform the procedures described in the following sections: Connecting to a Network for Out-of-Band Management on page 114 Connecting to a Management Console or Auxiliary Device on page 114...

  • Page 138: Connecting To A Network For Out-Of-Band Management

    M160 Internet Router Hardware Guide Connecting to a Network for Out-of-Band Management To connect the Routing Engine to a network for out-of-band management, connect an Ethernet cable with RJ-45/RJ-45 connectors to the such cable is provided with the router. For cable specifications, see Routing Engine Interface Cable and Wire Specifications on page 74.

  • Page 139: Connecting To An External Alarm-Reporting Device

    Figure 58: Console and Auxiliary Serial Port Connector Connecting to an External Alarm-Reporting Device To connect the router to external alarm-reporting devices, attach wires to the RED ALARM condition that triggers the red or yellow alarm LED on the craft interface also activates the corresponding alarm relay contact.
  • Page 140 M160 Internet Router Hardware Guide WARNING: Do not look directly into the ends of fiber-optic cables or into the transceivers on the interface faceplate. Single-mode fiber-optic cable and the interfaces that use it (such as ATM and SONET/SDH interfaces) emit laser light that can damage your eyes.

  • Page 141: Providing Power To The Router

    Figure 59: Attaching Cable to a PIC Providing Power to the Router Connect the router to external power sources and power it on by performing the following procedures: Connecting Power to the Router on page 117 Powering On the Router on page 119 Connecting Power to the Router Connect power to the router by attaching a grounding cable to the chassis grounding points and attaching power cables from external power sources...
  • Page 142 M160 Internet Router Hardware Guide Verify that there is no power flowing from either external power source, so that the voltage across the leads of the power cables is 0 V. Ensure that there is no chance that the cable leads might become active during the procedure. For each power supply, verify that the power switch on the circuit breaker box is in the Connect the grounding cable to a proper earth ground.

  • Page 143: Powering On The Router

    Install another washer and nut (in that order) on each terminal stud to secure the power cable lug. Using a 7/16-in. nut driver or wrench, tighten the nuts. Verify that the source power cabling and the grounding cabling are correct, that they are not touching or blocking access to router components, and that they do not drape where people could trip on them.
  • Page 144 M160 Internet Router Hardware Guide For each power supply, verify that the source power cables are connected to the appropriate terminal on the circuit breaker box: the positive (+) source cable to the return terminal (labeled the input terminal (labeled Verify that an external management device is connected to one of the Routing Engine ports on the CIP ( information on connecting management devices, see Connecting the Router...

  • Page 145: Configuring The Junos Internet Software

    Configuring the JUNOS Internet Software The router is shipped with the JUNOS Internet software preinstalled and ready to be configured when the router is powered on. There are three copies of the software: one on a nonrotating flash drive in the Routing Engine, one on a rotating hard drive in the Routing Engine, and one on a PC card that can be inserted into the slot in the Routing Engine faceplate.
  • Page 146 M160 Internet Router Hardware Guide Configure the router’s domain name. Configure the IP address and prefix length for the router’s Ethernet interface. Configure the IP address of a backup router, which is used only while the routing protocol is not running. Configure the IP address of a DNS server.
  • Page 147 interfaces { fxp0 { unit 0 { family inet { address address/prefix-length ; Commit the configuration to activate it on the router. [edit] root@# commit Optionally, configure additional properties by adding the necessary configuration statements. Then commit the changes to activate them on the router.
  • Page 148 M160 Internet Router Hardware Guide Configuring the JUNOS Internet Software...
  • Page 149 Part 3 Hardware Maintenance, Replacement, and Troubleshooting Procedures Maintaining Hardware Components on page 127 Replacing Hardware Components on page 139 Troubleshooting Hardware Components on page 207 Hardware Maintenance, Replacement, and Troubleshooting Procedures...

  • Page 150: Hardware Maintenance, Replacement, And Troubleshooting Procedures

    Hardware Maintenance, Replacement, and Troubleshooting Procedures...

  • Page 151: Maintaining Hardware Components

    This chapter describes how to maintain hardware components installed in the router. Some components, such as the Connector Interface Panel (CIP), require no maintenance. For information about returning a part to Juniper Networks for repair or replacement, see “Contacting Customer Support and Returning Hardware” on page 255.

  • Page 152: Maintaining The Air Filter

    M160 Internet Router Hardware Guide Maintaining the Air Filter on page 128 Maintaining the Fan Tray and Impellers on page 130 Maintaining the Air Filter Check the air filter regularly for dust and debris. Clean or replace it as needed. The air filter is hot-removable and hot-insertable, as described in Field-Replaceable Units (FRUs) on page 4.

  • Page 153: Cleaning The Air Filter

    Figure 61: Removing the Air Filter Air filter cover Air filter Cleaning the Air Filter To clean the air filter, follow this procedure: Pull the filter free of the air filter cover (see Figure 62). Rinse the filter with water, running the water from the back side to the front side to help remove dust and particles accumulated in the filter.

  • Page 154: Maintaining The Fan Tray And Impellers

    M160 Internet Router Hardware Guide is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage” on page 226. Grasp the sides of the air filter and push it firmly into place over the air intake vent.

  • Page 155: Maintaining Host Module Components

    For further description of the output from the command, see the JUNOS Internet Software Operational Mode Command Reference: Protocols, Class of Service, Chassis, and Management. Maintaining Host Module Components The router can have a Routing Engine in each of the slots labeled and a Miscellaneous Control Subsystem (MCS) in each of the slots labeled MCS 0 Routing Engine and MCS function together as a host module.

  • Page 156: Maintaining Packet Forwarding Engine Components

    M160 Internet Router Hardware Guide Issue the CLI MCSs. As shown in the sample output, the MCS that belongs to the master host module is designated For further description of the output from the commands, see the JUNOS Internet Software Operational Mode Command Reference: Protocols, Class of Service, Chassis, and Management.

  • Page 157: Maintaining Fpcs

    Maintaining SFMs on page 136 Maintaining FPCs The router can have up to eight Flexible PIC Concentrators (FPCs) mounted vertically in the FPC card cage at the front of the chassis, as shown in Figure 1. To maintain FPCs, perform the following procedures regularly: Check the LCD on the craft interface and the LEDs on the craft interface directly above each FPC slot.

  • Page 158: Maintaining Pics And Pic Cables

    M160 Internet Router Hardware Guide Maintaining PICs and PIC Cables To maintain PICs and PIC cables, follow these guidelines: Check the LEDs on PIC faceplates. Most PIC faceplates have an LED labeled STATUS the LED states differs for various PICs. For more information, see the M160 Internet Router PIC Guide.

  • Page 159: Maintaining The Pcgs

    The following guidelines apply specifically to fiber-optic cable: When you unplug a fiber-optic cable from a PIC, always place a rubber safety plug over the transceiver on the PIC faceplate and on the end of the cable. Anchor fiber-optic cable to avoid stress on the connectors. When attaching fiber to a PIC, be sure to secure the fiber so it is not supporting its own weight as it hangs to the floor.

  • Page 160: Maintaining Sfms

    M160 Internet Router Hardware Guide For further description of the output from the command, see the JUNOS Internet Software Operational Mode Command Reference: Protocols, Class of Service, Chassis, and Management. Maintaining SFMs The router can have a Switching and Forwarding Module (SFM) in each of the slots labeled SFM 0 To maintain the SFMs, perform the following procedures regularly:...

  • Page 161: Maintaining Power Supplies

    For further description of the output from the commands, see the JUNOS Internet Software Operational Mode Command Reference: Protocols, Class of Service, Chassis, and Management. Maintaining Power Supplies To verify that the power system is functioning normally, perform the following procedures regularly: Check the LEDs on the faceplate of both power supplies.
  • Page 162 M160 Internet Router Hardware Guide NOTE: The messages in the craft interface LCD and the output from CLI commands refer to the power supply on the right as on the left as For further description of the output from the command, see the JUNOS Internet Software Operational Mode Command Reference: Protocols, Class of Service, Chassis, and Management.

  • Page 163: Replacing Hardware Components

    Chapter 11 Replacing Hardware Components Most of the router’s hardware components are field-replaceable units (FRUs), which means that you can remove and replace them yourself. When you need to replace a router component, contact your customer support or sales representative to order the field-replaceable unit (FRU) that contains the component.

  • Page 164: Table 24: Tools And Parts Required

    M160 Internet Router Hardware Guide Table 24: Tools and Parts Required Tool or part Electrostatic bag or antistatic mat Electrostatic discharge (ESD) grounding wrist strap Flat-blade (–) screwdriver, 2.5 mm Flat-blade screwdriver, approximately 1/4 in. (6 mm) Phillips (+) screwdrivers, numbers 1 and 2 7/16-in.

  • Page 165: Replacing The Cip And Routing Engine Interface Port Cables

    Tool or part Wire cutters Rubber safety cap CAUTION: Do not substitute a metric nut driver or wrench. A tool that does not fit the nuts exactly can damage them. If a 7/16-in. tool is not available, use pliers or an adjustable wrench.
  • Page 166 M160 Internet Router Hardware Guide For more information about the command, see the JUNOS Protocols, Class of Service, and System Basics Command Reference. Press the power switch for both power supplies to the switches are on the circuit breaker box. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.

  • Page 167: Installing The Cip

    Figure 64: Removing the CIP Installing the CIP To install the CIP, follow this procedure (see Figure 65): Verify that the router is powered down. Carefully insert the rear of the CIP into the guides at the top and bottom of the CIP slot, which is located to the left of the FPC card cage.

  • Page 168: Figure 65: Installing The Cip

    M160 Internet Router Hardware Guide CAUTION: Be sure to slide the CIP straight within the slot to avoid damaging the connector pins on the front of the midplane. Using a Phillips screwdriver, tighten the screw at each end of the CIP faceplate. Reattach an external management device to one of the Routing Engine ports on the CIP ( if desired.

  • Page 169: Replacing Connections To Routing Engine Interface Ports

    Replacing Connections to Routing Engine Interface Ports The ports on the CIP connect the Routing Engine to external management devices (see Figure 66). Figure 66: Routing Engine Interface Ports and Alarm Relay Contacts HOST ETHERNET YEL=10Mb GRN=100Mb CONSOLE AUXILIARY Routing HOST Engine ports ETHERNET...

  • Page 170: Replacing The Management Ethernet Cable

    M160 Internet Router Hardware Guide Replacing the Console or Auxiliary Cable on page 146 Replace Alarm Relay Wires on page 147 Replacing the Management Ethernet Cable To connect the Routing Engine to a network for out-of-band management, connect an Ethernet cable with RJ-45/RJ-45 connectors to the such cable is provided with the router.

  • Page 171: Replace Alarm Relay Wires

    Unscrew the screws that secure the cable connector to the port, using a 2.5-mm flat-blade screwdriver if necessary. Pull the cable connector straight out of the port. Disconnect the cable from the console or auxiliary device. Plug the female end of the replacement serial cable into the appropriate CONSOLE CIP.

  • Page 172: Replacing Cooling System Components

    M160 Internet Router Hardware Guide Orient the terminal block according to the labels to the left of the appropriate relay contact ( means “normally open”). Plug the terminal block into the relay contact and use a 2.5 mm flat-blade screwdriver to tighten the screws on the face of the block. Attach the other end of the wires to the external device.

  • Page 173: Installing The Fan Tray

    Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage”...

  • Page 174: Replacing The Front Impeller Assembly

    M160 Internet Router Hardware Guide Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage”...

  • Page 175: Removing The Front Impeller Assembly

    Installing the Craft Interface on the Front Impeller Assembly on page 153 Installing the Front Impeller Assembly on page 154 If the replacement front impeller assembly already has a craft interface on it, perform only the procedures in “Removing the Front Impeller Assembly” on page 151 and “Installing the Front Impeller Assembly”...

  • Page 176: Removing The Craft Interface From The Front Impeller Assembly

    M160 Internet Router Hardware Guide Figure 71: Removing the Front Impeller Assembly Removing the Craft Interface from the Front Impeller Assembly If you are replacing the front impeller assembly and the replacement assembly does not have a craft interface panel on the front, you must transfer the craft interface from the removed assembly to the replacement assembly.

  • Page 177: Installing The Craft Interface On The Front Impeller Assembly

    Figure 72: Removing the Screws along the Top Front Edge of the Front Impeller Assembly Upper impeller Screws Craft interface Figure 73: Removing the Craft Interface Installing the Craft Interface on the Front Impeller Assembly To attach the craft interface to the front impeller assembly, follow this procedure: Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.

  • Page 178: Installing The Front Impeller Assembly

    M160 Internet Router Hardware Guide Attach the craft interface to the front of the impeller assembly, making sure that the hooks on the back of the craft interface clip securely into the windows on the front of the impeller assembly (see Figure 73). Align the holes in the three semicircular metal tabs on the back of the craft interface with the corresponding holes in the top of the impeller assembly.

  • Page 179: Removing The Rear Lower Impeller Assembly

    The assembly is hot-removable and hot-insertable, as described in Field-Replaceable Units (FRUs) on page 4. To replace it, perform the following procedures: Removing the Rear Lower Impeller Assembly on page 155 Installing the Rear Lower Impeller Assembly on page 155 Removing the Rear Lower Impeller Assembly To remove the rear lower impeller assembly, follow this procedure (see Figure 75): Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and...

  • Page 180: Replacing The Rear Upper Impeller Assembly

    M160 Internet Router Hardware Guide Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage”...

  • Page 181: Removing The Rear Upper Impeller Assembly

    Removing the Rear Upper Impeller Assembly To remove the rear upper impeller assembly, follow this procedure (see Figure 77 and Figure 78, which show the two types of impeller that can be installed): Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.

  • Page 182: Installing The Rear Upper Impeller Assembly

    M160 Internet Router Hardware Guide Figure 78: Removing the Rear Upper Impeller Assembly Installing the Rear Upper Impeller Assembly To install the rear upper impeller assembly, follow this procedure (see Figure 79 and Figure 80, which show the two types of impeller that can be installed): Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.

  • Page 183: Replacing Host Module Components

    Figure 80: Installing the Rear Upper Impeller Assembly Replacing Host Module Components For instructions on replacing host module components, see the following sections: Replacing an MCS on page 159 Removing and Insert the PC Card on page 163 Replacing a Routing Engine on page 165 Replacing an MCS The MCSs are hot-pluggable, as described in Field-Replaceable Units (FRUs) on page 4.
  • Page 184 M160 Internet Router Hardware Guide Remove the rear component cover by loosening the thumbscrew at each corner of the cover and pulling it straight off the chassis. For complete instructions, see “Removing the Rear Component Cover” on page 86. If two host modules are installed, use one of the following two methods to determine which is functioning as master: If the component you are removing belongs to the master host module and a second host module is installed, issue the following CLI command to switch...

  • Page 185: Installing An Mcs

    On the console or other management device connected to the Routing Engine that is paired with the CB you are removing, enter CLI operational mode and issue the following command. The command shuts down the Routing Engine cleanly, so its state information is preserved: user@host>...

  • Page 186: Figure 82: Installing An Mcs

    M160 Internet Router Hardware Guide Place one hand under the MCS to support it and grasp one of the extractor clips on the faceplate with the other hand. Align the rear of the MCS with the guides inside the chassis and slide it in completely.

  • Page 187: Removing And Insert The Pc Card

    Routing Engine onto a PC card, for example, to create a backup copy of upgrade software that you have obtained from Juniper Networks. Instructions for copying software to a PC card are available at the Juniper Networks Support Web site http://www.juniper.net/support/ Center, then to the download page for JUNOS Internet software.

  • Page 188: Insert The Pc Card

    Insert the PC Card To insert the PC card, follow this procedure (see Figure 84): Orient the PC card with the Juniper Networks logo facing in the direction specified on the Routing Engine faceplate. Insert the card into the slot.

  • Page 189: Replacing A Routing Engine

    Figure 84: Insert the PC Card S F M 0 S F M 1 M C S 0 R E 0 Replacing a Routing Engine The Routing Engines are hot-pluggable, as described in Field-Replaceable Units (FRUs) on page 4. For a description of the effect of removing a Routing Engine, see Host Module on page 22.
  • Page 190 M160 Internet Router Hardware Guide If the component you are removing belongs to the master host module and a second host module is installed, issue the following CLI command to switch mastership to the standby host module: user@host> request chassis routing-engine master switch If the Routing Engines are running JUNOS Release 6.0 or later and are configured for graceful switchover, the standby Routing Engine immediately assumes Routing Engine functions and there is no interruption to packet...

  • Page 191: Figure 85: Removing A Routing Engine

    NOTE: Wait until a message appears on the console confirming that the operating system has halted. For more information about the command, see the JUNOS Protocols, Class of Service, and System Basics Command Reference. Using your thumbs, push and hold the red tab on each extractor clip toward the outer edge of the unit.

  • Page 192: Installing A Routing Engine

    M160 Internet Router Hardware Guide Installing a Routing Engine NOTE: If two Routing Engines are installed, they must both be the same version. To install a Routing Engine, follow this procedure (see Figure 86): Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.

  • Page 193: Replacing Packet Forwarding Engine Components

    Figure 86: Installing a Routing Engine S F M 0 S F M 1 M C S 0 R E 0 R E 1 Replacing Packet Forwarding Engine Components For instructions on replacing Packet Forwarding Engine components, see the following sections: Replacing an FPC on page 169 Replacing a PCG on page 176 Replacing a PIC on page 179...

  • Page 194: Removing An Fpc

    M160 Internet Router Hardware Guide Installing an FPC on page 172 Removing an FPC To remove an FPC, follow this procedure (see Figure 87): Place an antistatic mat on a flat, stable surface to receive the FPC. If you are removing PICs from the FPC, prepare an antistatic mat or electrostatic bag for each one.
  • Page 195 CAUTION: Do not leave a fiber-optic transceiver uncovered except when inserting or removing cable. The safety cap keeps the port clean and prevents accidental exposure to laser light. CAUTION: Avoid bending fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.

  • Page 196: Installing An Fpc

    M160 Internet Router Hardware Guide If you are not reinstalling an FPC into the emptied FPC slot within a short time, install a blank FPC panel over the slot to maintain proper airflow in the FPC card cage. CAUTION: After removing an FPC from the chassis, wait at least 30 seconds before reinserting it, removing an FPC from a different slot, or inserting an FPC into a different slot.
  • Page 197 is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage” on page 226. Verify that the ends of the ejector levers, which are located at each end of the FPC, are pushed outward, nearly perpendicular to the face of the FPC. Grasp the front of the FPC with one hand and place the other hand under the FPC to support it.
  • Page 198 M160 Internet Router Hardware Guide interfaces that use it (such as ATM and SONET/SDH interfaces) emit laser light that can damage your eyes. Insert the appropriate cable into the cable connector ports on each PIC on the FPC. Secure the cables so that they are not supporting their own weight. Place excess cable out of the way in a neatly coiled loop, using the cable management system.

  • Page 199: Figure 88: Installing An Fpc

    You can also verify correct FPC and PIC functioning by issuing the show chassis fpc pic-status page 133 and “Maintaining PICs and PIC Cables” on page 134. Figure 88: Installing an FPC Ejector levers Replacing Hardware Components commands described in “Maintaining FPCs” on Replacing Packet Forwarding Engine Components show chassis fpc...

  • Page 200: Replacing A Pcg

    M160 Internet Router Hardware Guide Figure 89: Connecting Fiber-Optic Cable to a PIC Replacing a PCG During normal operation, both PCGs generate a 125-MHz clock signal, but only one is designated as the master. The modules and ASICs in the Packet Forwarding Engine that use the clock signal to gate packet processing use only the signal from the master PCG.

  • Page 201: Figure 90: Removing A Pcg

    Remove the rear component cover by loosening the thumbscrew at each corner of the cover and pulling it straight off the chassis. For complete instructions, see “Removing the Rear Component Cover” on page 86. Press and hold the offline button on the PCG faceplate until the amber LED labeled (Keep in mind that if you are removing the master PCG, forwarding halts while the Packet Forwarding Engine resets so that the components start using...

  • Page 202: Installing A Pcg

    M160 Internet Router Hardware Guide Installing a PCG To install a PCG, follow this procedure (see Figure 91): Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground.

  • Page 203: Replacing A Pic

    Figure 91: Installing a PCG S F M 0 S F M 1 M C S 0 R E 0 R E 1 M C S 1 Replacing a PIC PICs are housed in the FPCs installed in the front of the router, as shown in Figure 1. PICs are hot-removable and hot-insertable, as described in Field-Replaceable Units (FRUs) on page 4.
  • Page 204 M160 Internet Router Hardware Guide Use one of the following methods to take the PIC offline: For more information about the command, see the JUNOS Protocols, Class of Disconnect the cables from the PIC. If the PIC uses fiber-optic cable, immediately cover each transceiver and the end of each cable with a rubber safety cap.

  • Page 205: Installing A Pic

    alternately or at very different rates can cause the PIC to become lodged in the FPC slot, making it difficult to turn the screws). Slide the PIC out of the FPC card carrier and place it in the electrostatic bag or on the antistatic mat.
  • Page 206 M160 Internet Router Hardware Guide If the PIC uses fiber-optic cable, verify that there is a rubber safety cap over each transceiver on the faceplate. Install a cap if necessary. Align the notches in the connector at the rear of the PIC with the notches in the PIC slot in the FPC and then slide the PIC in until it lodges firmly in the FPC.
  • Page 207 CAUTION: Avoid bending fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose. Use one of the following methods to bring the PIC online: Press and hold the PIC offline button until the status LED on the PIC faceplate indicates normal functioning, which usually takes about 5 seconds.

  • Page 208: Figure 93: Installing A Pic

    M160 Internet Router Hardware Guide Figure 93: Installing a PIC Figure 94: Connecting Fiber-Optic Cable to a PIC Replacing Packet Forwarding Engine Components...

  • Page 209: Replace Pic Cables

    Replace PIC Cables Removing and installing PIC cables does not affect router function, except that a PIC does not receive or transmit data while its cable is disconnected. To replace a PIC cable, perform the following procedures: Removing a PIC Cable on page 185 Installing a PIC Cable on page 186 Removing a PIC Cable To remove a PIC cable, follow this procedure:...

  • Page 210: Installing A Pic Cable

    M160 Internet Router Hardware Guide CAUTION: Do not leave a fiber-optic transceiver uncovered except when inserting or removing cable. The safety cap keeps the port clean and prevents accidental exposure to laser light. Remove the cable from the cable management system and detach it from the destination port.

  • Page 211: Figure 95: Connecting Fiber-Optic Cable To A Pic

    CAUTION: Do not let fiber-optic cable hang free from the connector. Do not allow fastened loops of cable to dangle, which stresses the cable at the fastening point. Insert the other end of the cable into the destination port. Repeat the previous steps for any additional cables. If the PIC is offline (its failure indicator LED is lit), use one of the following methods to bring the PIC online: For more information about the command, see the JUNOS Protocols, Class of...

  • Page 212: Replacing An Sfm

    M160 Internet Router Hardware Guide Replacing an SFM Up to four SFMs can be installed in the router, processing a total of 160 Mpps. The SFMs are hot-pluggable, as described in Field-Replaceable Units (FRUs) on page 4. Removing or inserting an SFM causes a brief interruption in forwarding performance (about 500 ms) as the Packet Forwarding Engine reconfigures the distribution of packets across the remaining SFMs.

  • Page 213: Installing An Sfm

    Figure 96: Removing an SFM Installing an SFM To install an SFM, follow this procedure (see Figure 97): Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground.

  • Page 214: Replace An Sfp

    M160 Internet Router Hardware Guide Figure 97: Installing an SFM S F M 0 S F M 1 M C S 0 Replace an SFP Small form factor pluggables (SFPs) are optical transceivers that can be removed from a PIC (for more information, see “Physical Interface Cards (PICs)” on page 13). Figure 98: Small Form Factor Pluggable (SFP) Connector SFPs are hot-insertable and hot-removable.

  • Page 215: Installing An Sfp

    Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage”...
  • Page 216 M160 Internet Router Hardware Guide is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage” on page 226. Verify that a rubber safety cap covers the SFP transceiver, installing one if necessary. Orient the SFP over the port in the PIC such that the connector end will enter the slot first and the SFP connector faces the appropriate direction: Slide the SFP into the slot.

  • Page 217: Replacing Power System Components

    CAUTION: Avoid bending fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose. Verify that the status LEDs on the PIC faceplate indicate that the SFP is functioning correctly (there is an LED for each SFP port).
  • Page 218 M160 Internet Router Hardware Guide On the console or other management device connected to the master Routing Engine, enter CLI operational mode and issue the following command to shut down the router software. (If two Routing Engines are installed, also issue the command on the backup Routing Engine.) user@host>...

  • Page 219: Installing The Circuit Breaker Box

    Remove the rear lower impeller assembly by loosening the thumbscrew at each corner and pulling the impeller assembly straight out of the chassis. For complete instructions, see “Removing the Rear Lower Impeller Assembly” on page 155. Using a Phillips screwdriver, loosen and remove the screw at each corner of the circuit breaker box.
  • Page 220 M160 Internet Router Hardware Guide Slide a washer and then screw a nut onto each terminal stud (if the washers and nuts were not installed on the studs, they should be in the accessory box). Using a 7/16-in. nut driver or wrench, tighten the nuts. CAUTION: Do not substitute a metric nut driver or wrench.

  • Page 221: Replacing A Power Supply

    Figure 100: Installing the Circuit Breaker Box Replacing a Power Supply The router has two load-sharing, redundant power supplies. Each power supply is hot-removable and hot-insertable, as described in Field-Replaceable Units (FRUs) on page 4. When one power supply fails or is powered down, the other power supply automatically assumes the entire electrical load for the router.

  • Page 222: Figure 101: Removing A Power Supply

    M160 Internet Router Hardware Guide Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground. For more information about ESD, see “Preventing Electrostatic Discharge Damage”...

  • Page 223: Installing A Power Supply

    Figure 102: Rear of Power Supply Showing Midplane Connectors Power supply input connectors Power supply output connectors Installing a Power Supply To install a power supply, follow this procedure (see Figure 103): Verify that there is no power flowing to the power supply from the external power source, so that the voltage across the leads of the power cables is 0 V.

  • Page 224: Disconnecting And Connecting Power

    M160 Internet Router Hardware Guide If the router is completely powered down when you power on the power supply, the Routing Engine boots as the power supply completes its startup sequence. If the Routing Engine finishes booting and you need to power down the router again, first issue the CLI “Disconnecting Power from the Router”...
  • Page 225 NOTE: Wait until a message appears on the console confirming that the operating system has halted. For more information about the command, see the JUNOS Protocols, Class of Service, and System Basics Command Reference. For each power supply, press the power switch on the circuit breaker box to ) position.

  • Page 226: Connecting Power To The Router

    M160 Internet Router Hardware Guide Figure 104: Disconnecting Power Cables Flat washer Cable lug Terminal studs Connecting Power to the Router Connect power to the router by attaching a grounding cable to the chassis grounding points and attaching power cables from external power sources to the terminal studs on the circuit breaker box.
  • Page 227 Verify that there is no power flowing from either external power source, so that the voltage across the leads of the power cables is 0 V. Ensure that there is no chance that the cable leads might become active during the procedure. For each power supply, verify that the power switch on the circuit breaker box is in the ) position.

  • Page 228: Replacing A Fuse

    M160 Internet Router Hardware Guide Install another washer and nut (in that order) on each terminal stud to secure the power cable lug. Using a 7/16-in. nut driver or wrench, tighten the nuts. Verify that the source power cabling and the grounding cabling are correct, that they are not touching or blocking access to router components, and that they do not drape where people could trip on them.
  • Page 229 WARNING: You must power off the router before removing or installing a fuse. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis. Make sure the router is attached to a proper earth ground.

  • Page 230: Figure 106: Fuse Locations In The Fuse Box

    M160 Internet Router Hardware Guide Reinstall the rear lower impeller by sliding it back into the chassis and tightening the thumbscrew at each corner of the impeller cover. For complete instructions, see “Installing the Rear Lower Impeller Assembly” on page 155. Order new fuses from an electrical supply house to replace the spares in the group.

  • Page 231: Troubleshooting Hardware Components

    This chapter describes how to troubleshoot problems with hardware components installed in the router. If you encounter software problems, or problems with hardware components not discussed here, contact the Juniper Networks Technical Assistance Center (JTAC) as described in “Requesting Support” on page xxiii.

  • Page 232: Leds

    M160 Internet Router Hardware Guide console, and the port labeled information, see “Routing Engine Management Ports” on page 33. For information about using the CLI to display details about alarms generated by interfaces and hardware components, see “Chassis and Interface Alarm Messages” on page 209. For information about using the CLI to troubleshoot the JUNOS Internet software, see the appropriate JUNOS Internet software configuration guide.

  • Page 233: Leds On Hardware Components

    LEDs on Hardware Components LEDs on the faceplates of the following hardware components report their status: DC power supply—A green LED labeled and an amber one labeled LED labeled MCS—A blue LED labeled labeled PCG—A blue LED labeled labeled PIC—Most PICs have an LED labeled have additional LEDs, often one per port.

  • Page 234: Table 27: Sonet/Sdh Interface Alarm Messages

    M160 Internet Router Hardware Guide Component LCD Message Temperature Temperature Warm sensors Temperature Hot Sensor Failure PEM pem-ID Removed Power supplies PEM pem-ID High Temp PEM pem-ID Output Fail PEM pem-ID Input Fail SFMs SFM sfm-number Failure SFM sfm-number Removed Host modules Host host-number Failure...

  • Page 235: Blown Fuse Indicators

    LCD Message interface-name so- x / x / x SEF interface-name so- x / x / x UNEQ Blown Fuse Indicators The router uses fuses from the Cooper Bussman brand GMT series for the FPCs, MCSs, PCGs, and SFMs. They are located in a fuse box on the rear of the midplane.

  • Page 236: Juniper Networks Technical Assistance Center

    For instructions for replacing a blown fuse, see “Replacing a Fuse” on page 204. Juniper Networks Technical Assistance Center If you need assistance during troubleshooting, you can contact the Juniper Networks Technical Assistance Center (JTAC) by e-mail or telephone.

  • Page 237: Troubleshooting Packet Forwarding Engine Components

    For replacement instructions, see “Replacing Hardware Components” on page 139. For instructions about returning a faulty component to Juniper Networks, see “Contacting Customer Support and Returning Hardware” on page 255. Troubleshooting Packet Forwarding Engine Components...

  • Page 238: Troubleshooting Fpcs

    M160 Internet Router Hardware Guide Troubleshooting FPCs As soon as an FPC is seated in an operating router, the Routing Engine downloads the FPC software to it. The FPC then runs diagnostics and enables the PICs housed on it. During this time, the green LED labeled blinks.

  • Page 239: Troubleshooting Pics

    Troubleshooting PICs To troubleshoot the PICs, follow these guidelines: To check the status of each port on a PIC, look at the LED located on the PIC faceplate. For information about the meaning of LED states on different PICs, see the M160 Internet Router PIC Guide. To check the status of a PIC, issue the following CLI command.

  • Page 240: All Leds On One Supply Are Off Or Led States Are Not Correct

    Replace the faulty power supply with a spare. For instructions, see “Replacing a Power Supply” on page 197. If the LEDs light correctly on the spare, the original power supply is faulty. Return it to Juniper Networks for replacement, as described in “Contacting Customer Support and Returning Hardware”...
  • Page 241 “Disconnecting and Connecting Power” on page 200 (you do not need to disconnect and reconnect the grounding cable). If you cannot determine the cause of the problem or need additional assistance, see “Juniper Networks Technical Assistance Center” on page 212. Troubleshooting Hardware Components Troubleshooting the Power System...
  • Page 242 M160 Internet Router Hardware Guide Troubleshooting the Power System...

  • Page 243: Appendixes

    Part 4 Appendixes Safety and Regulatory Compliance Information on page 221 Contacting Customer Support and Returning Hardware on page 255 Cable Connector Pinouts on page 269 Appendixes...
  • Page 244 Appendixes...

  • Page 245: Appendix A Safety And Regulatory Compliance Information

    Appendix A Safety and Regulatory Compliance Information To install and use the router safely, follow proper safety procedures. This chapter discusses the following safety and regulatory compliance information: Definition of Safety Warning Levels on page 221 Safety Guidelines and Warnings on page 222 Agency Approvals on page 253 Compliance Statements for EMC Requirements on page 254 Definition of Safety Warning Levels...

  • Page 246: Safety Guidelines And Warnings

    M160 Internet Router Hardware Guide Varoitus Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista. Attention Ce symbole d’avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer des blessures ou des dommages corporels.
  • Page 247 Safety and Regulatory Compliance Information Electrical Safety Guidelines and Warnings on page 227 Installation Safety Guidelines and Warnings on page 239 Laser and LED Safety Guidelines and Warnings on page 244 Maintenance and Operational Safety Guidelines and Warnings on page 247 Safety Guidelines and Warnings...

  • Page 248: General Safety Guidelines And Warnings

    M160 Internet Router Hardware Guide General Safety Guidelines and Warnings The following guidelines help ensure your safety and protect the router from damage. The list of guidelines might not address all potentially hazardous situations in your working environment, so be alert and exercise good judgment at all times. Perform only the procedures explicitly described in this manual.

  • Page 249: Qualified Personnel Warning

    Safety and Regulatory Compliance Information Preventing Electrostatic Discharge Damage on page 226 Qualified Personnel Warning WARNING: Only trained and qualified personnel should install or replace the router. Waarschuwing Installatie en reparaties mogen uitsluitend door getraind en bevoegd personeel uitgevoerd worden. Varoitus Ainoastaan koulutettu ja pätevä...

  • Page 250: Preventing Electrostatic Discharge Damage

    M160 Internet Router Hardware Guide Varoitus Tämä laite on tarkoitettu asennettavaksi paikkaan, johon pääsy on rajoitettua. Paikka, johon pääsy on rajoitettua, tarkoittaa paikkaa, johon vain huoltohenkilöstö pääsee jonkin erikoistyökalun, lukkoon sopivan avaimen tai jonkin muun turvalaitteen avulla ja joka on paikasta vastuussa olevien toimivaltaisten henkilöiden valvoma.

  • Page 251: Electrical Safety Guidelines And Warnings

    packing material or if you move components across plastic or carpets. Observe the following guidelines to minimize the potential for electrostatic discharge (ESD) damage, which can cause intermittent or complete component failures: Always use an ESD wrist strap or ankle strap, and make sure that it is in direct contact with your skin.
  • Page 252 M160 Internet Router Hardware Guide DC Power Electrical Safety Guidelines on page 229 Copper Conductors Warning on page 230 DC Power Disconnection Warning on page 231 DC Power Grounding Requirements and Warning on page 232 DC Power Wiring Sequence Warning on page 233 DC Power Wiring Terminations Warning on page 234 Grounded Equipment Warning on page 235 In Case of Electrical Accident on page 236...

  • Page 253: General Electrical Safety Guidelines

    General Electrical Safety Guidelines Install the router in compliance with the following local, national, or international electrical codes: United States—National Fire Protection Association (NFPA 70), United States National Electrical Code. Canada—Canadian Electrical Code, Part 1, CSA C22.1. Other countries—International Electromechanical Commission (IEC) 60364, Part 1 through Part 7.

  • Page 254: Copper Conductors Warning

    M160 Internet Router Hardware Guide ground wire or conduit to a solid office (earth) ground. A closed loop ring is recommended for terminating the ground conductor at the ground stud. Run two wires from the circuit breaker box to a source of 48 VDC. Use appropriate gauge wire to handle up to 90 A.

  • Page 255: Dc Power Disconnection Warning

    Safety and Regulatory Compliance Information Aviso Utilize apenas fios condutores de cobre. ¡Atención! Emplee sólo conductores de cobre. Varning! Använd endast ledare av koppar. DC Power Disconnection Warning WARNING: Before performing any of the following procedures, ensure that power is removed from the DC circuit. To ensure that all power is off, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to position, and tape the switch handle of the circuit breaker in the position.

  • Page 256: Dc Power Grounding Requirements And Warning

    M160 Internet Router Hardware Guide Aviso Antes de executar um dos seguintes procedimentos, certifique-se que desligou a fonte de alimentação de energia do circuito de corrente contínua. Para se assegurar que toda a corrente foi DESLIGADA, localize o disjuntor no painel que serve o circuito de corrente contínua e coloque-o na posição OFF (Desligado), segurando nessa posição a manivela do interruptor do disjuntor com fita isoladora.

  • Page 257: Dc Power Wiring Sequence Warning

    Safety and Regulatory Compliance Information Advarsel Når enheten installeres, må jordledningen alltid tilkobles først og frakobles sist. Aviso Ao instalar a unidade, a ligação à terra deverá ser sempre a primeira a ser ligada, e a última a ser desligada. ¡Atención! Al instalar el equipo, conectar la tierra la primera y desconectarla la última.

  • Page 258: Dc Power Wiring Terminations Warning

    M160 Internet Router Hardware Guide Advarsel Riktig tilkoples tilkoplingssekvens er jord til jord, +RTN til +RTN, –48 V til – 48 V. Riktig frakoples tilkoplingssekvens er –48 V til – 48 V, +RTN til +RTN, jord til jord. Aviso Ate con alambre la fuente de potencia cc Usando los terminales apropiados en el extremo del cableado.

  • Page 259: Grounded Equipment Warning

    Safety and Regulatory Compliance Information Warnung Wenn Litzenverdrahtung erforderlich ist, sind zugelassene Verdrahtungsabschlüsse, z.B. für einen geschlossenen Regelkreis oder gabelförmig, mit nach oben gerichteten Kabelschuhen zu verwenden. Diese Abschlüsse sollten die angemessene Größe für die Drähte haben und sowohl die Isolierung als auch den Leiter festklemmen.

  • Page 260: In Case Of Electrical Accident

    M160 Internet Router Hardware Guide Avvertenza Questa apparecchiatura deve essere collegata a massa. Accertarsi che il dispositivo host sia collegato alla massa di terra durante il normale utilizzo. Advarsel Dette utstyret skal jordes. Forviss deg om vertsterminalen er jordet ved normalt bruk. Aviso Este equipamento deverá...

  • Page 261: Power Disconnection Warning

    Safety and Regulatory Compliance Information Varoitus Tässä laitteessa on useampia virtalähdekytkentöjä. Kaikki kytkennät on irrotettava kokonaan, jotta virta poistettaisiin täysin laitteesta. Attention Cette unité est équipée de plusieurs raccordements d’alimentation. Pour supprimer tout courant électrique de l’unité, tous les cordons d’alimentation doivent être débranchés.

  • Page 262: Tn Power Warning

    M160 Internet Router Hardware Guide Warnung Bevor Sie an einem Chassis oder in der Nähe von Netzgeräten arbeiten, ziehen Sie bei Wechselstromeinheiten das Netzkabel ab bzw. schalten Sie bei Gleichstromeinheiten den Strom am Unterbrecher ab. Avvertenza Prima di lavorare su un telaio o intorno ad alimentatori, scollegare il cavo di alimentazione sulle unità...

  • Page 263: Installation Safety Guidelines And Warnings

    ¡Atención! El equipo está diseñado para trabajar con sistemas de alimentación tipo TN, IT. Varning! Enheten är konstruerad för användning tillsammans med elkraftssystem av TN-, IT-typ. Installation Safety Guidelines and Warnings Observe the following guidelines and warnings before and during router installation: Chassis Lifting Guidelines on page 239 Installation Instructions Warning on page 239 Rack-Mounting Requirements and Warnings on page 240...

  • Page 264: Rack-Mounting Requirements And Warnings

    M160 Internet Router Hardware Guide Varoitus Lue asennusohjeet ennen järjestelmän yhdistämistä virtalähteeseen. Attention Avant de brancher le système sur la source d’alimentation, consulter les directives d’installation. Warnung Lesen Sie die Installationsanweisungen, bevor Sie das System an die Stromquelle anschließen. Avvertenza Consultare le istruzioni di installazione prima di collegare il sistema all’alimentatore.
  • Page 265 Les directives ci-dessous sont destinées à assurer la protection du personnel: Le rack sur lequel est monté le Juniper Networks router doit être fixé à la structure du bâtiment. Si cette unité constitue la seule unité montée en casier, elle doit être placée dans le bas.
  • Page 266 Le seguenti direttive vengono fornite per garantire la sicurezza personale: Il Juniper Networks router deve essere installato in un telaio, il quale deve essere fissato alla struttura dell’edificio. Questa unità deve venire montata sul fondo del supporto, se si tratta dell’unica unità...
  • Page 267 Para garantizar su seguridad, proceda según las siguientes instrucciones: El Juniper Networks router debe instalarse en un bastidor fijado a la estructura del edificio. Colocar el equipo en la parte inferior del bastidor, cuando sea la única unidad en el mismo.

  • Page 268: Ramp Warning

    M160 Internet Router Hardware Guide Ramp Warning WARNING: When installing the router, do not use a ramp inclined at more than 10 degrees. Waarschuwing Gebruik een oprijplaat niet onder een hoek van meer dan 10 graden. Varoitus Älä käytä sellaista kaltevaa pintaa, jonka kaltevuus ylittää 10 astetta. Attention Ne pas utiliser une rampe dont l’inclinaison est supérieure à...

  • Page 269: General Laser Safety Guidelines

    General Laser Safety Guidelines When working around PICs, observe the following safety guidelines to prevent eye injury: Do not look into unterminated ports or at fibers that connect to unknown sources. Do not examine unterminated optical ports with optical instruments. Avoid direct exposure to the beam.

  • Page 270: Laser Beam Warning

    M160 Internet Router Hardware Guide Waarschuwing Klasse 1 LED-product. Varoitus Luokan 1 valodiodituote. Attention Alarme de produit LED Class I. Warnung Class 1 LED-Produktwarnung. Avvertenza Avvertenza prodotto LED di Classe 1. Advarsel LED-produkt i klasse 1. Aviso Produto de classe 1 com LED. ¡Atención! Aviso sobre producto LED de Clase 1.

  • Page 271: Radiation From Open Port Apertures Warning

    Safety and Regulatory Compliance Information Radiation From Open Port Apertures Warning WARNING: Because invisible radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to radiation and do not stare into open apertures. Waarschuwing Aangezien onzichtbare straling vanuit de opening van de poort kan komen als er geen fiberkabel aangesloten is, dient blootstelling aan straling en het kijken in open openingen vermeden te worden.

  • Page 272: Battery Handling Warning

    M160 Internet Router Hardware Guide Jewelry Removal Warning on page 249 Lightning Activity Warning on page 250 Operating Temperature Warning on page 251 Product Disposal Warning on page 252 Battery Handling Warning WARNING: Replacing the battery incorrectly might result in an explosion. Replace the battery only with the same or equivalent type recommended by the manufacturer.

  • Page 273: Jewelry Removal Warning

    Safety and Regulatory Compliance Information Varning! Explosionsfara vid felaktigt batteribyte. Ersätt endast batteriet med samma batterityp som rekommenderas av tillverkaren eller motsvarande. Följ tillverkarens anvisningar vid kassering av använda batterier. Jewelry Removal Warning WARNING: Before working on equipment that is connected to power lines, remove jewelry, including rings, necklaces, and watches.

  • Page 274: Lightning Activity Warning

    M160 Internet Router Hardware Guide ¡Atención! Antes de operar sobre equipos conectados a líneas de alimentación, quitarse las joyas (incluidos anillos, collares y relojes). Los objetos de metal se calientan cuando se conectan a la alimentación y a tierra, lo que puede ocasionar quemaduras graves o que los objetos metálicos queden soldados a los bornes.

  • Page 275: Operating Temperature Warning

    6 inches (15.2 cm) of clearance around the ventilation openings. Waarschuwing Om te voorkomen dat welke router van de Juniper Networks router dan ook oververhit raakt, dient u deze niet te bedienen op een plaats waar de maximale aanbevolen omgevingstemperatuur van 40 C wordt overschreden.

  • Page 276: Product Disposal Warning

    M160 Internet Router Hardware Guide Varning! Förhindra att en Juniper Networks router överhettas genom att inte använda den i ett område där den maximalt rekommenderade omgivningstemperaturen på 40 C överskrids. Förhindra att luftcirkulationen inskränks genom att se till att det finns fritt utrymme på minst 15,2 cm omkring ventilationsöppningarna.

  • Page 277: Agency Approvals

    Agency Approvals The router complies with the following standards: Safety Immunity ETSI NEBS CAN/CSA-22.2 No. 60950-00/UL 1950 Third Edition, Safety of Information Technology Equipment EN 60825-1 Safety of Laser Products - Part 1: Equipment Classification, Requirements and User’s Guide EN 60950 Safety of Information Technology Equipment AS/NZS 3548 Class A (Australia/New Zealand) EN 55022 Class A Emissions (Europe) FCC Part 15 Class A (USA)

  • Page 278: Compliance Statements For Emc Requirements

    M160 Internet Router Hardware Guide Compliance Statements for EMC Requirements Canada This Class A digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada. European Community This is a Class A product. In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures.

  • Page 279: Contacting Customer Support And Returning Hardware

    Packing Components for Shipment on page 267 Locating Component Serial Numbers Before contacting Juniper Networks, Inc. to request a Return Materials Authorization (RMA), you must find the serial number on the router or component. To list all of the router components and their serial numbers, enter the following command-line interface (CLI) command: user@host>...

  • Page 280: Figure 109: Serial Number Id Label

    M160 Internet Router Hardware Guide SFM 1 SPR SFM 2 SPP SFM 2 SPR SFM 3 SPP SFM 3 SPR FPC 0 PIC 0 PIC 1 PIC 2 PIC 3 FPC 4 PIC 0 FPC 5 PIC 0 PIC 1 PIC 2 PIC 3 FPC 6...

  • Page 281: Cip Serial Number Id Label

    CIP Serial Number ID Label The serial number ID label on the CIP is located at the top of the left side, as shown in Figure 110. Figure 110: CIP Serial Number ID Label Craft Interface Serial Number ID Label The serial number on the craft interface is located on the back of the panel, behind the alarm LEDs, as shown in Figure 111.

  • Page 282: Dc Power Supply Serial Number Id Label

    M160 Internet Router Hardware Guide Figure 111: Craft Interface Serial Number ID Label Serial number ID label DC Power Supply Serial Number ID Label The serial number ID label on a DC power supply is located on the faceplate, as shown in Figure 112. Figure 112: DC Power Supply Serial Number ID Label Serial number ID label SP0402 2A...

  • Page 283: Fpc Serial Number Id Label

    FPC Serial Number ID Label The serial number ID label on an FPC is located on the right side, as shown in Figure 113. Figure 113: FPC Serial Number ID Label MCS Serial Number ID Label The serial number on an MCS is located on the bottom at the left side, as shown in Figure 114.

  • Page 284: Pcg Serial Number Id Label

    M160 Internet Router Hardware Guide Figure 114: MCS Serial Number ID Label PCG Serial Number ID Label The serial number on a PCG is located on the top, close to the midplane connector, as shown in Figure 115. Figure 115: PCG Serial Number ID Label PIC Serial Number ID Label The serial number ID label for a PIC is located on the right side of the PIC, as shown in Figure 116.

  • Page 285: Routing Engine Serial Number Id Label

    The location of the serial number ID label depends on the type of Routing Engine (see Figure 117 and Figure 118). Some Routing Engines might have more than one serial number. Contact your Juniper Networks support representative if you need assistance in determining which serial number to provide.

  • Page 286: Sfm Serial Number Id Label

    Contacting Customer Support After you have located the serial numbers of the components you need to return, contact Juniper Networks Technical Assistance Center (JTAC) in one of the following ways. You can contact JTAC 24 hours a day, seven days a week:...

  • Page 287: Information You Might Need To Supply To Jtac

    This number is used to track the returned material at the factory and to return repaired or new components to the customer as needed. NOTE: Do not return any component to Juniper Networks, Inc. unless you have first obtained an RMA number. Juniper Networks, Inc. reserves the right to refuse shipments that do not have an RMA.

  • Page 288: Tools And Parts Required

    M160 Internet Router Hardware Guide Obtain a Return Materials Authorization (RMA) number from the Juniper Networks Technical Assistance Center (JTAC). You can send e-mail or telephone as described above. Provide the following information in your e-mail message or during the telephone call: The support representative validates your request and issues an RMA number for return of the component.

  • Page 289: Packing The Routing Node For Shipment

    CAUTION: Do not substitute a metric nut driver or wrench. A tool that does not fit the nuts exactly can damage them. If a 7/16-in. tool is not available, use pliers or an adjustable wrench. Blank panels to cover empty slots Electrostatic bags or antistatic mats, one for each electronic component removed Electrostatic discharge (ESD) grounding wrist strap...
  • Page 290 M160 Internet Router Hardware Guide Shut down power to the router by pressing the power switch for all power supplies to the off ( Disconnect power from the router. For instructions, see “Disconnecting and Connecting Power” on page 200. Remove the cables that connect to all external devices. For instructions, see “Replacing the Management Ethernet Cable”...

  • Page 291: Packing Components For Shipment

    Packing Components for Shipment To pack and ship individual components, follow these guidelines: When you return components, make sure they are adequately protected with packing materials and packed so that the pieces are prevented from moving around inside the carton. Use the original shipping materials if they are available.
  • Page 292 M160 Internet Router Hardware Guide Packing Components for Shipment...

  • Page 293: Connector Pinouts For The Routing Engine Ethernet Port

    Appendix C Cable Connector Pinouts This chapter describes the pinouts for the following cable connectors: RJ-45 Connector Pinouts for the Routing Engine ETHERNET Port on page 269 DB-9 Connector Pinouts for the Routing Engine AUXILIARY and CONSOLE Ports on page 270 RJ-48 Cable Pinouts for E1 and T1 PICs on page 270 X.21 and V.35 Cable Pinouts for EIA-530 PIC on page 273 Fast Ethernet 48-port Cable Pinouts on page 274...

  • Page 294: Db-9 Connector Pinouts For The Routing Engine Auxiliary And Console Ports

    M160 Internet Router Hardware Guide DB-9 Connector Pinouts for the Routing Engine AUXILIARY and CONSOLE Ports The ports on the CIP labeled accept RS-232 (EIA-232) cable. The to a laptop, modem, or other auxiliary unit, and the a management console. The ports are configured as data terminal equipment (DTE).

  • Page 295: Table 31: Rj-48 Connector To Rj-48 Connector (Crossover) Pinout

    RJ-48 Pin (on T1/E1 RJ-48 Pin PIC) (Data numbering (Data numbering form) form) No connect No connect No connect No connect No connect No connect No connect No connect No connect Table 31: RJ-48 Connector to RJ-48 Connector (Crossover) Pinout RJ-48 Pin (on T1/E1 PIC) (Data numbering form)

  • Page 296: Table 32: Rj-48 Connector To Db-15 Connector (Straight) Pinout

    M160 Internet Router Hardware Guide Table 32: RJ-48 Connector to DB-15 Connector (Straight) Pinout RJ-48 Pin (on T1/E1 PIC) (Data numbering form) Table 33: RJ-48 Connector to DB-15 Connector (Crossover) Pinout RJ-48 Pin (on T1/E1 PIC) (Data numbering form) RJ-48 Cable Pinouts for E1 and T1 PICs DB-15 Pin (Data numbering form)

  • Page 297: X.21 And V.35 Cable Pinouts For Eia-530 Pic

    RJ-48 Pin (on T1/E1 PIC) (Data numbering form) X.21 and V.35 Cable Pinouts for EIA-530 PIC The EIA-530 PIC accepts X.21 and V.35 cable connectors. A V.35 connection requires an DB-25 to V.35 cable and connects to a V.35 data terminal equipment (DTE) 34-pin Winchester type male cable (one per port).

  • Page 298: Fast Ethernet 48-Port Cable Pinouts

    M160 Internet Router Hardware Guide DB-25 Pin Signal FGND Table 35: DB-25 Connector to DB-15 (X.21) Connector Pinout DB-25 Pin Signal FGND Fast Ethernet 48-port Cable Pinouts The Fast Ethernet 48-port PIC has four VHDCI connector ports on its faceplate (see Figure 121), each of which accepts one of the four RJ-21 cables supplied with the PIC (see Figure 122).

  • Page 299: Figure 121: Fast Ethernet 48-Port Pic

    Figure 121: Fast Ethernet 48-port PIC Figure 122: VHDCI to RJ-21 Cable Table 36 describes the RJ-21 cable pinouts. NOTE: RJ-21 pin numbers 25 and 50 do not appear in the table because they are ground connectors. Table 36: RJ-21 Pin Assignments Ethernet Port Numbers 0, 12, 24, 36 1, 13, 25, 37...
  • Page 300 M160 Internet Router Hardware Guide Ethernet Port Numbers 6, 18, 30, 42 7, 19, 31, 43 8, 20, 32, 44 9, 21, 33, 45 10, 22, 34, 46 11, 23, 35, 47 Fast Ethernet 48-port Cable Pinouts RJ-21 Pin Assignment...

  • Page 301: Index

    Part 5 Index Index...
  • Page 302 Index...

  • Page 303: Index

    Index Symbols [ ], in configuration statements ......xxi { }, in configuration statements ......xxi ( ), in syntax descriptions .
  • Page 304 M160 Internet Router Hardware Guide fiber-optic attenuation........71 cleaning instructions for transceivers .
  • Page 305 description ......... . .33 control packets, handling of.
  • Page 306 M160 Internet Router Hardware Guide tools required ........139 troubleshooting .
  • Page 307 ........52 Juniper Networks Technical Assistance Center (JTAC).
  • Page 308 M160 Internet Router Hardware Guide impeller assemblies ....... 130 MCS ..........131 overview .
  • Page 309 power budget calculation ..... .72 status, checking........134 T1, pinouts for RJ-48 cable .
  • Page 310 M160 Internet Router Hardware Guide fan tray during initial installation ..... . .93 for maintenance or replacement ... . 148 during initial installation .
  • Page 311 PCG..........260 PIC.
  • Page 312 M160 Internet Router Hardware Guide LEDs craft interface ....... . . 208 hardware components .

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