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General| Operating System | JUNOS |
|---|---|
| Routing Protocols | BGP, OSPF, RIP, IS-IS |
| Power Supply | AC or DC |
| Slots | 8 |
| Interfaces | Ethernet |
Provides a comprehensive overview of the M120 Multiservice Edge router's capabilities and architecture.
Details the redundant hardware components designed to prevent system failure and ensure high availability.
Describes the physical structure of the M120 router chassis, its dimensions, and mounting options.
Explains the midplane's location, functions, and role in data path, power distribution, and signal path.
Details the craft interface front panel, its LEDs, alarm conditions, and port descriptions for system monitoring.
Explains the host subsystem's role in routing and system management, including the Routing Engine and Control Board.
Details the Routing Engine's function, installation, hot-pluggability, and USB port for software installation.
Describes the Routing Engine's components like CPU, DRAM, CompactFlash, and LEDs, and their functions.
Lists current and end-of-life Routing Engine specifications, including processor, memory, and Junos OS support.
Explains the CB's role in control and monitoring, including its components and LEDs.
Details the FPCs' role in powering, controlling PICs, and translating packets for the FEB.
Lists FPC components such as card carrier, FPGA, CPU, and defines FPC terminology like faceplate and connector edge.
Describes CFPCs as a combination of PIC and FPC, enabling direct interconnection to SONET transport facilities.
Explains PICs' function in providing physical connections to network media and performing framing and line-speed signaling.
Lists the PICs supported in the M120 router, organized alphabetically by PIC family.
Provides a matrix detailing FPC compatibility with PICs and the first Junos OS release supporting each combination.
Describes the M120 router's AC and DC power supply configurations and their hot-insertable/removable nature.
Details the AC power supplies, their appliance inlets, and the need for dedicated AC power feeds.
Explains the status LEDs on the power supply faceplates and their indication of normal or failed operation.
Describes the redundant FEBs that perform route lookup and forwarding functions, separating them from FPCs.
Explains the LEDs on the FEB faceplate indicating status (OK, FAIL, ACTIVE) and FPC connection.
Summarizes tasks for preparing a site for router installation, including environmental factors and rack selection.
Provides the router chassis's physical dimensions, weight, and configuration limits.
Details ventilation needs to prevent overheating, ensuring sufficient cool air supply and hot air exhaust.
Outlines requirements for installing the router in four-post or open-frame racks, including spacing and strength.
Specifies environmental conditions for normal router operation, including altitude, humidity, and thermal output.
Explains grounding requirements for safety and EMI compliance, detailing connection points and procedures.
Lists AC and DC power system electrical specifications and component power requirements for various configurations.
Details AC power supply connection, power cord specifications, and plug types for different geographical locations.
Provides detailed electrical specifications for the M120 AC power supply, including output power and input ratings.
Covers DC power supply connection, cable specifications, and grounding requirements for DC-powered routers.
Lists electrical specifications for the M120 DC power supply, including input voltage and current ratings.
Explains signal loss, attenuation, and dispersion in fiber-optic cables and their impact on transmission distance.
Guides on calculating optical interface power budget and margin, essential for ensuring proper fiber-optic connection function.
Details specifications for cables connecting the Routing Engine to management devices and networks.
Provides pinout information for the RJ-45 connector on the Ethernet port for management connections.
Details RJ-45 connector pinouts for AUX and CONSOLE ports used for management and console connections.
Provides a step-by-step summary of the M120 router installation process, from site preparation to initial configuration.
Lists the necessary tools and parts for unpacking the M120 router and preparing it for installation.
Details the procedure for removing the router from its shipping container and verifying received parts.
Provides instructions for installing mounting hardware in four-post racks or cabinets, including shelf and spacer bar placement.
Details the process of installing mounting hardware for open-frame racks, focusing on the large mounting shelf.
Explains how to install the large mounting shelf for center-mount open-frame racks.
Lists the essential tools, including a mechanical lift and screwdrivers, needed for safe router installation.
Provides step-by-step instructions for safely installing the router using a mechanical lift into a rack or cabinet.
Lists tools and parts needed for manual router installation, including screwdrivers, nut driver, and ESD strap.
Details the process of removing components to lighten the chassis for manual installation.
Guides on manually installing the router into a rack, emphasizing safety precautions and the need for multiple people.
Explains how to connect the grounding cable to earth ground and chassis grounding points for safety.
Lists tools and parts needed for connecting management devices, PICs, and power cables to the router.
Details connecting the Routing Engine to external devices via Craft Interface ports for management and alarm reporting.
Guides on connecting the Routing Engine to a network using an Ethernet cable for out-of-band management.
Explains connecting to alarm devices via RED ALARM and YELLOW ALARM relay contacts on the craft interface.
Describes connecting to external clocking devices using EXT CLOCK ports on the craft interface.
Provides instructions for connecting network cables to PICs for network connectivity.
Details the process of connecting AC power cords from sources to the AC appliance inlets on the power supply faceplates.
Explains connecting DC power cables from sources to the terminal studs on the power supply faceplates.
Guides on powering on the router, verifying power supply status, and checking management device connections.
Describes how to power off the router cleanly using the `request system halt` command.
Guides through the initial configuration of Junos OS on the M120 router using CLI commands.
Lists the router components that can be replaced at the customer site with minimal downtime.
Lists the necessary tools and parts for replacing M120 router components.
Details how to replace wires connected to the alarm relay contacts on the craft interface for alarm reporting.
Provides procedures for removing and installing the craft interface, noting its hot-insertable and hot-removable nature.
Guides on removing and installing the front air filter, located below the lower fan tray.
Details procedures for removing and installing front and rear fan trays, noting their hot-insertable nature.
Outlines procedures for removing and installing M120 Routing Engines, emphasizing taking the host subsystem offline.
Explains how to replace storage drives (SSDs) on specific RE-A-1800 and RE-S-1800 Routing Engines.
Guides on removing and installing DIMM modules in M120 Routing Engines, noting vendor compatibility.
Details procedures for removing and installing M120 Control Boards, emphasizing taking the host subsystem offline.
Covers replacing cables for management Ethernet, console, and auxiliary ports on the Routing Engine.
Provides steps for replacing the management Ethernet cable connecting the Routing Engine to the network.
Guides on removing and installing M120 FPCs, noting that the router continues to function after removal.
Details procedures for removing and installing M120 CFPCs, emphasizing their hot-insertable and hot-removable nature.
Explains how to remove and install M120 PICs, noting that router function continues but PIC interfaces stop working.
Guides on removing and installing PIC cables, noting that it does not affect router function but disconnects PIC data.
Details replacing XENPAK modules, which are optical transceivers removable from a PIC.
Guides on replacing SFP or XFP transceivers, noting they are hot-insertable/removable and do not interrupt PIC functioning.
Provides steps for removing and installing AC power supplies, noting their redundancy and hot-insertable nature.
Guides on replacing the AC power cord for an AC power supply, including locating the correct plug type.
Details procedures for removing and installing DC power supplies, emphasizing proper polarity and grounding.
Explains how to replace DC power supply cables, ensuring correct polarity and grounding.
Guides on removing and installing M120 FEBs, noting their location and weight.
Lists essential tools and parts needed for maintaining router hardware components.
Guides on verifying the air filter's condition for optimum cooling and replacing it as needed.
Details how to monitor fan status and identify potential failures or tray removals using CLI commands.
Explains how to check the status of host subsystems, Routing Engines, and CBs using LEDs and CLI commands.
Describes procedures for taking a host subsystem offline for replacement, noting effects on router operation.
Guides on verifying the condition of FPCs and CFPCs, checking LEDs and using CLI status commands.
Guides on checking PIC LEDs and cables for optimum router performance and identifying potential issues.
Explains how to check power supply status using LEDs and CLI commands, and ensuring proper cable arrangement.
Guides on verifying FEB condition by checking LEDs and using CLI commands for status and environment checks.
Lists resources for troubleshooting router hardware, including CLI, alarm messages, and JTAC.
Provides an overview of LEDs on the craft interface, component faceplates, and their meaning for status indication.
Guides on troubleshooting fan issues, identifying causes of alarms, and checking system environment status.
Details steps for troubleshooting FPCs and CFPCs, including checking seating, LEDs, and using CLI status commands.
Provides guidance on troubleshooting PICs, checking port LEDs, and using CLI commands for PIC status.
Guides on troubleshooting power supply issues, checking LEDs, alarms, and input voltage for proper operation.
Offers steps for troubleshooting FEB issues by checking LEDs, seating, and using CLI commands for status.
Addresses troubleshooting red chassis alarms related to empty or removed FEB slots and FPC mapping.
Provides contact information for Juniper Networks Technical Assistance Center (JTAC) via Web and telephone.
Explains how to use the CLI command `show chassis hardware` to list router components and their serial numbers.
Indicates the location of the serial number label on the M120 router chassis side.
Specifies the location of the serial number label on the M120 craft interface faceplate.
Identifies the location of the serial number label on the top right side of the Routing Engine.
Points to the location of the serial number label on the right side of the top of the Control Board (CB).
Describes the location of the serial number label on the FPC faceplate, varying slightly by FPC type.
Indicates the location of the serial number label on the PIC faceplate, depending on component placement.
Specifies locations for serial number labels on AC and DC power supply faceplates.
Identifies the location of the serial number label on the center right side of the FEB.
Guides on contacting Juniper Networks for RMA numbers and procedures for returning defective hardware components.
Lists tools and parts needed to remove router components for replacement or shipment.
Details the process of packing the router for shipment, including using original materials and ESD protection.
Provides guidelines for packing individual components, emphasizing protection with antistatic bags and proper labeling.
Explains the different levels of safety warnings (Note, Caution, Warning) used in the documentation.
Provides general safety guidelines to ensure user safety and protect hardware equipment from damage.
Warns that only trained and qualified personnel should install or replace hardware equipment.
Indicates that hardware equipment is intended for installation in restricted-access areas accessible only to service personnel.
Emphasizes establishing procedures for protecting people and equipment during fire emergencies.
Covers establishing fire emergency procedures, safety training, and proper provisioning of fire-control equipment.
Recommends using Type C fire extinguishers for electrical fires and avoiding multipurpose ABC extinguishers.
Provides guidelines for lifting and moving the router chassis, emphasizing safety precautions and the use of mechanical lifts.
Lists warnings to observe before and during hardware equipment installation, covering ports, racks, and ramps.
Ensures secure rack installation to avoid hazardous conditions from uneven mechanical loading.
Warns against using ramps inclined at more than 10 degrees during hardware installation.
Advises observing safety guidelines to prevent eye injury when working around PICs with optical interfaces.
Lists specific warnings related to Class 1 laser and LED products, including beam and aperture safety.
Warns that the product is a Class 1 laser product, requiring specific handling precautions.
Warns about invisible radiation from open ports when no fiber cable is connected, advising avoidance of exposure.
Warns about the risk of explosion if batteries are replaced incorrectly and advises using manufacturer-recommended types.
Advises removing jewelry before working on equipment connected to power lines to prevent burns or damage.
Warns against working on the system or connecting/disconnecting cables during lightning activity.
Advises against operating equipment in areas exceeding the maximum recommended ambient temperature and ensuring airflow.
States that product disposal must comply with all national laws and regulations and recommends responsible disposal.
Provides actions to take in case of an electrical accident involving injury, prioritizing safety and medical aid.
Lists general safety guidelines for protecting users and equipment from electrical hazards during operation.
Provides specific safety guidelines for AC-powered routers, covering grounding, power feeds, and cord coloring.
Outlines safety guidelines for DC-powered routers, covering terminal blocks, wiring, polarity, and grounding.
Covers guidelines for site electrical wiring, including signaling distance limitations and RFI/EMC considerations.
Lists the standards and regulations the router complies with, including safety, EMC, and NEBS.
States that the product is Class A and may cause radio interference in domestic environments.
Confirms compliance with NEBS Level 3 requirements for physical protection and bonding network installation.
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