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M10i ™ Internet Router Hardware Guide Juniper Networks, Inc. 1194 North Mathilda Avenue Sunnyvale, California 94089 USA 408-745-2000 www.juniper.net Part Number: 530-017393-01, Revision 2.
This product includes the Envoy SNMP Engine, developed by Epilogue Technology, an Integrated Systems Company. Copyright © 1986-1997, Epilogue Technology Corporation. All rights reserved. This program and its documentation were developed at private expense, and no part of them is in the public domain.
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Table of Contents About This Guide xvii Objectives ....................................................................................................xvii Audience ......................................................................................
Power Supply LED ..................................................................................22 Fan Tray ........................................................................................................23 Cable Management System .........
Chapter 7 Installing the Mounting Hardware 51 Moving the Mounting Brackets ......................................................................51 Installing the Cable Management System ......................................................52 Chapter 8 Installing the Router 55 Tools and Parts Required .
Hardware and Interface Alarm Messages ................................................80 Juniper Networks Technical Assistance Center ........................................83 Troubleshooting the CFEB .................................................
Removing and Inserting the Internal Flash Drive ..................................126 Removing the Internal Compact Flash Disk from a Routing Engine ............................................................................................126 Inserting the Internal Compact Flash Disk .
Appendix C Power Requirements, Guidelines, and Specifications 175 Power Guidelines, Requirements, and Specifications ...................................175 Site Electrical Wiring Guidelines ............................................................175 Distance Limitations for Signaling .
Part 5 Index Index ...........................................................................................................209 Table of Contents ■ xi Table of Contents.
xii ■ Table of Contents M10i Internet Router Hardware Guide.
List of Figures Figure 1: Front of Chassis ................................................................................8 Figure 2: Rear of Chassis .................................................................................8 Figure 3: Midplane .
Figure 42: Installing a DC Power Supply ......................................................116 Figure 43: Connecting Power Cables to a DC Power Supply ........................116 Figure 44: Connecting Power Cables to a DC Power Supply .............
List of Tables Table 1: Notice Icons ..................................................................................xviii Table 2: Text and Syntax Conventions ........................................................xviii Table 3: Technical Documentation for Supported Routing Platforms .
xvi ■ List of Tables M10i Internet Router Hardware Guide.
About This Guide This preface provides the following guidelines for using the M10i Internet Router Hardware Guide . ■ Objectives on page xvii ■ Audience on page xvii ■ Documentation Conventions .
Documentation Conventions Table 1 on page xviii defines the notice icons used in this guide. Table 1: Notice Icons Description Meaning Icon Indicates important features or instructions. Informational note Indicates a situation that might result in loss of data or hardware damage.
Table 2: Text and Syntax Conventions (continued) Examples Description Convention ■ To configure a stub area, include the stub statement at the [edit protocols ospf area area-id] hierarchy level.
describes the contents of each document. Table 4 on page xxiii lists the books included in the Network Operations Guide series. Table 3: Technical Documentation for Supported Routing Platforms Descrip.
Table 3: Technical Documentation for Supported Routing Platforms (continued) Description Book Describes Juniper Networks routing platforms, and provides information about how to configure basic system parameters, supported protocols and software processes, authentication, and a variety of utilities for managing your router on the network.
Table 3: Technical Documentation for Supported Routing Platforms (continued) Description Book Describes how to use the commit script and self-diagnosis features of the JUNOS software.
Table 3: Technical Documentation for Supported Routing Platforms (continued) Description Book Contain corrections and updates to the published JUNOScope manual, provide information that might have been omitted from the manual, and describe upgrade and downgrade procedures.
Requesting Support For technical support, open a support case with the Case Manager link at http://www.juniper.net/support/ or call 1-888-314-JTAC (from the United States, Canada, or Mexico) or 1-408-745-9500 (from elsewhere).
Part 1 Product Overview ■ System Overview on page 3 ■ Hardware Component Overview on page 7 ■ JUNOS Internet Software Overview on page 25 ■ System Architecture Overview on page 33 Product Over.
2 ■ Product Overview M10i Internet Router Hardware Guide.
Chapter 1 System Overview This chapter provides an overview of the Juniper Networks M10i Internet router, discussing the following topics: ■ System Description on page 3 ■ Field-Replaceable Units .
■ Hot-removable and hot-insertable FRUs — You can remove and replace these components without powering off the router or disrupting the routing functions. ■ Hot-pluggable FRUs — You can remove and replace these components without powering off the router, but the routing functions of the system are interrupted when the component is removed.
DC System Redundancy DC system redundancy requires two power sources from feed A and two power sources from feed B. If one feed fails or is shut down for service, the other feed powers two DC power supplies and can provide full power to the router's components indefinitely.
6 ■ Safety Requirements, Warnings, and Guidelines M10i Internet Router Hardware Guide.
Chapter 2 Hardware Component Overview This chapter provides an overview of the hardware components on the M10i Internet router: ■ Router Chassis on page 7 ■ Midplane on page 9 ■ Flexible PIC Con.
Figure 1: Front of Chassis Figure 2: Rear of Chassis The chassis includes an electrostatic discharge (ESD) point (banana plug receptacle) to protect electronic components from damage due to static electricity, at the front of the chassis, as shown in Figure 1 .
For further safety information, see “ Safety and Regulatory Compliance Information ” on page 135. Table 6 on page 9 summarizes physical specifications for the router chassis. Table 6: Chassis Physical Specifications Value Description 8.7 in. (22.1 cm) Chassis height ■ 17.
Figure 3: Midplane Flexible PIC Concentrators (FPCs) Flexible PIC Concentrators (FPCs) house the PICs that connect the router to network media (for information about PICs, see “ Physical Interface Cards (PICs) ” on page 10).
The slot number for a PIC appears above its offline button on the HCM (see “ PIC Offline Buttons ” on page 19). The number of ports on a PIC depends on the type of PIC.
For CFEB replacement instructions, see “ Replacing a CFEB ” on page 90. The CFEB 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 integrated ASIC.
■ I 2 C/EEPROM containing the serial number and revision level ■ Two 512-KB boot flash EPROMs (programmable on the board) ■ One PowerPC 8245 integrated processor ■ Three LEDs — A green LED labeled OK , a red LED labeled FAIL , and a blue LED labeled MASTER indicate CFEB status.
Routing Engine The Routing Engine is an Intel-based PCI platform that runs JUNOS Internet software. Software processes that run on the Routing Engine maintain the routing tables, manage the routing pr.
■ CPU — Runs JUNOS Internet software to maintain the router's routing tables and routing protocols. It has a Pentium-class processor. ■ SDRAM — Provides storage for the routing and forwarding tables and for other Routing Engine processes.
Figure 5: Routing Engine Table 8: States for Routing Engine LEDs Description State Color Label There is read/write activity on the PC card. Blinking Green HDD Routing Engine is functioning as master. On steadily Blue MASTER Routing Engine is not operational.
For information about the pinouts for the connectors, see “ Cable Connector Pinouts ” on page 199. High-Availability Chassis Manager (HCM) The High-Availability Chassis Manager (HCM) works with its companion Routing Engine to provide control and monitoring functions for router components.
■ 100-Mbps Fast Ethernet switch — Carries signals and monitoring data between router components. ■ Two LEDs — Indicate HCM status. There is a green one labeled PWR and an blue one labeled MSTR . Table 9 on page 18 describes the LED states. ■ Alarm LEDs — Display alarm conditions, if any exist.
Table 10 on page 19 describes the alarm LEDs in more detail. Table 10: Alarm LEDs Description State Color Shape Critical alarm LED — Indicates a critical condition that can cause the router to stop functioning, such as component removal, failure, or overheating.
Power supplies are hot-removable and hot-insertable, as described in “ Field-Replaceable Units (FRUs) ” on page 3. To avoid electrical injury, carefully follow the instructions in “ Replacing an AC Power Supply ” on page 107 and “ Replacing a DC Power Supply ” on page 112.
Figure 7: AC Power Supply Table 11: Electrical Specifications for AC Power Supply Specification Description 293 WDC Maximum power output Nominal: 100, 120, 200, 208, 220, 240 VAC Operating range: 90 – 264 VAC AC input voltage 47 – 63 Hz AC input line frequency 6 – 3 A AC input current rating +3.
Figure 8: DC Power Supply Table 12: Electrical Specifications for DC Power Supply Specification Description 293 W Maximum power output Nominal: – 48, – 60 VDC Operating range: – 40.5 to – 72 VDC DC input voltage 10 A @ – 48 V Input DC current rating +3.
Fan Tray The router's cooling system consists of two fan trays, located along the left and right side of the chassis, that provide side-to-side cooling (see Figure 9 ). They connect directly to the router midplane. Each fan tray is a single unit containing eight individually fault-tolerant fans.
Figure 10: Cable Management System 24 ■ Cable Management System M10i Internet Router Hardware Guide.
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.
■ Routing Protocol Process on page 26 ■ VPNs on page 30 ■ Interface Process on page 31 ■ Chassis Process on page 31 ■ SNMP and MIB II Processes on page 31 ■ Management Process on page 31 .
■ BGP — Border Gateway Protocol, version 4, is an Exterior Gateway Protocol (EGP) that guarantees loop-free exchange of routing information between routing domains (also called autonomous systems).
by LDP can also traverse LSPs created by Resource Reservation Protocol (RSVP). ■ MPLS — Multiprotocol Label Switching enables you to configure LSPs through a network either manually or dynamically.
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.
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.
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.
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.
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.
■ Midplane — Transports packets, notifications, and other signals between the PICs 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.
Figure 12: Packet Forwarding Engine Components and Data Flow 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.
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.
Figure 14: Control Packet Handling for Routing and Forwarding Table Updates Routing Engine Architecture ■ 37 Chapter 4: System Architecture Overview.
38 ■ Routing Engine Architecture M10i Internet Router Hardware Guide.
Part 2 Initial Installation ■ Preparing for Router Installation on page 41 ■ Unpacking the Router on page 47 ■ Installing the Mounting Hardware on page 51 ■ Installing the Router on page 55 .
40 ■ Initial Installation M10i Internet Router Hardware Guide.
Chapter 5 Preparing for Router Installation This chapter describes how to prepare your site for installation of the M10i Internet router. It discusses the following topics: ■ Site Preparation Checkl.
Table 14: Site Preparation Checklist (continued) Date Performed By For More Information Item or Task “ Clearance Requirements for Airflow and Hardware Maintenance ” on page 44 “ Rack Size and Strength ” on page 42 Plan rack location, including required space clearances.
NOTE: We recommend that you do not install the router in a cabinet. If you mount the router in a cabinet, be sure that sufficient room is provided for cable management and cables. The rack rails must be spaced widely enough to accommodate the router chassis's external dimensions: 8.
Spacing of Mounting Holes The holes in the mounting brackets are spaced at 1 U (1.75 in. or 4.45 cm), so the router can be mounted in any rack that provides holes spaced at that distance. Connection to Building Structure Always secure the rack to the structure of the building.
Figure 16: Chassis Dimensions and Clearance Requirements Clearance Requirements for Airflow and Hardware Maintenance ■ 45 Chapter 5: Preparing for Router Installation.
46 ■ Clearance Requirements for Airflow and Hardware Maintenance M10i Internet Router Hardware Guide.
Chapter 6 Unpacking the Router This chapter explains how to unpack the router and verify the parts received. It also describes how to move the mounting brackets and install the cable management system.
4. Remove the accessory box and packing material from the top of the router. 5. Open the accessory box and verify the contents against the parts inventory on the label attached to the box. 6. Remove the router from the shipping carton. 7. Verify the chassis components received against the packing list included with the router.
Table 15: Generic Inventory of Router Components (continued) Quantity Component Up to 2 Routing Engine Depends on router configuration Blank panels for slots without components Unpacking the Router .
50 ■ Unpacking the Router M10i Internet Router Hardware Guide.
Chapter 7 Installing the Mounting Hardware In a four-post rack or cabinet, you front-mount the router. In an open-frame rack, you can center-mount or front-mount the router. In an open-frame rack, center-mounting provides more even distribution of weight and greater stability.
6. Replace the screws that secure the mounting brackets to the chassis. 7. Reinstall the fan trays: a. Grasp the handle on the faceplate of the fan tray with one hand and place the other hand under the unit to support it. Orient the fan tray so that the thumbscrew is at the top of the tray.
Figure 19: Installing the Cable Management System Installing the Cable Management System ■ 53 Chapter 7: Installing the Mounting Hardware.
54 ■ Installing the Cable Management System M10i Internet Router Hardware Guide.
Chapter 8 Installing the Router Because the router weighs between 57 lb (25.9 kg) and about 79 lb (35.8 kg), using a mechanical lift to install it is recommended. If you do not use a mechanical lift, installing the chassis safely requires two people to lift and an additional person to insert the mounting screws.
■ Read the information in “ Installation Safety Guidelines and Warnings ” on page 153, with particular attention to “ Chassis Lifting Guidelines ” on page 154. ■ Remove the router from the shipping carton, as described in “ Unpacking the Router ” on page 47.
Figure 20: Installing the Chassis into a Open-Frame Rack Installing the Chassis in the Rack ■ 57 Chapter 8: Installing the Router.
Figure 21: Installing the Chassis into a Four-Post Rack 58 ■ Installing the Chassis in the Rack M10i Internet Router Hardware Guide.
Chapter 9 Connecting the Router After installing the router into the rack as described in “ Initial Installation ” on page 39, complete the installation by connecting management and alarm devices, PICs, and power cables.
■ Connecting to a Management Console or Auxiliary Device on page 60 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 MGMT port on the Routing Engine.
Connecting PIC Cables Now connect PICs to the network by plugging in network cable. To connect cable to the PICs, follow this procedure (see Figure 25 , which shows a fiber-optic PIC): 1. Have ready a length of the type of cable used by the PIC. For cable specifications, see the M10i Internet Router PIC Guide .
Figure 25: 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 an AC-Pow.
6. Verify that the switch on each power supply faceplate is in the OFF ( O ) position. 7. For each power supply, insert the appliance coupler end of a power cord into the appliance inlet on a power supply faceplate and insert the plug into an AC power source receptacle.
10. Insert the power cable lugs into the appropriate field-wiring terminals. Using a number 1 Phillips screwdriver, turn the screw on each field-wiring terminal clockwise to secure the power cable lug. Apply between 8 lb-in. (.9 Nm) and 9 lb-in. (1.02 Nm) of torque to each screw.
Powering On the Router To power on the router, follow this procedure: 1. Verify that the power supplies are fully inserted in the chassis and the thumbscrews on their faceplates are tightened.
in “ Connecting Power to an AC-Powered Router ” on page 62 or “ Connecting Power to a DC-Powered Router ” on page 63. 8. On the external management device connected to the Routing Engine, monitor the startup process to verify that the system has booted properly.
Chapter 10 Performing the Initial Configuration ■ Configuring the JUNOS Internet Software on page 67 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.
root# cli root@> 4. Enter configuration mode. cli> configure [edit] root@# 5. Configure the name of the router. If the name includes spaces, enclose the name in quotation marks ( “ ” ). [edit] root@# set system host-name host-name 6. Configure the router's domain name.
[edit] root@# set system root-authentication ssh-rsa public-key 11. Optionally, display the configuration to verify that it is correct. [edit] root@# show system { host-name host-name ; domain-name do.
70 ■ Configuring the JUNOS Internet Software M10i Internet Router Hardware Guide.
Part 3 Hardware Maintenance, Troubleshooting, and Replacement Procedures ■ Maintaining Hardware Components on page 73 ■ Troubleshooting Hardware Components on page 79 ■ Replacing Hardware Compon.
72 ■ Hardware Maintenance, Troubleshooting, and Replacement Procedures M10i Internet Router Hardware Guide.
Chapter 11 Maintaining Hardware Components This chapter describes how to maintain hardware components installed in the router. For information about returning a part to Juniper Networks for repair or replacement, see “ Contacting Customer Support and Returning Hardware ” on page 189.
CFEB status: State Online Intake Temperature 27 degrees C / 80 degrees F Exhaust Temperature 33 degrees C / 91 degrees F CPU utilization 3 percent Interrupt utilization 0 percent Heap utilization 8 pe.
user@host> show chassis fpc pic-status Slot 0 Online PIC 0 4x OC-3 SONET, MM PIC 1 1x CSTM1, SMIR PIC 3 2x OC-3 ATM, MM Slot 1 Online PIC 0 1x OC-12 SONET, MM PIC 1 1x OC-12 ATM, MM PIC 2 2x OC-3 ATM, MM PIC 3 2x OC-3 ATM, MM For further description of the output from the command, see the JUNOS System Basics and Services Command Reference .
unplugging is then absorbed by the short fiber extension, which is easy and inexpensive to replace. ■ Keep fiber-optic cable connections clean. Small micro-deposits of oil and dust in the canal of t.
■ Verify that the power source has the proper current rating and that each power supply is connected to a separate power source. ■ Verify that the cable or cord connecting the power supply to the external power source is securely in place and that there is no moisture accumulating near the router.
78 ■ Maintaining the Routing Engine M10i Internet Router Hardware Guide.
Chapter 12 Troubleshooting Hardware Components This chapter describes how to troubleshoot problems with hardware components installed in the router. If you encounter software problems, or problems wit.
For information about using the CLI to display details about alarms generated by interfaces and hardware components, see “ Hardware and Interface Alarm Messages ” on page 80. For information about using the CLI to troubleshoot the JUNOS Internet software, see the appropriate JUNOS Internet software configuration guide.
In both tables, the text in the column labeled “ CLI Message ” appears in the output from the show chassis alarms command. Table 16: Chassis Alarm Messages Alarm Severity Remedy Alarm Condition Chassis Component Yellow Contact technical support. See “ Requesting Support ” on page xxiv for more information.
Table 16: Chassis Alarm Messages (continued) Alarm Severity Remedy Alarm Condition Chassis Component Reformat internal flash drive and install bootable image. If this fails, replace failed Routing Engine. Yellow Install bootable image on internal flash drive.
Table 17: SONET/SDH Interface Alarm Messages (continued) CLI Message interface-name so- x / x / x - SONET bit error rate defect interface-name so- x / x / x - SONET bit error rate fault interface-name.
Troubleshooting the Fan Tray The fan trays installed along each side of the chassis house eight fans that draw room air into the chassis to maintain an acceptable operating temperature for the Routing Engine, PICs, CFEB, and other components. For a graphic depiction of the airflow, see Figure 9 .
user@host> show chassis fpc pic-status Slot 0 Online PIC 0 4x OC-3 SONET, MM PIC 1 1x CSTM1, SMIR PIC 3 2x OC-3 ATM, MM Slot 1 Online PIC 0 1x OC-12 SONET, MM PIC 1 1x OC-12 ATM, MM PIC 2 2x OC-3 ATM, MM PIC 3 2x OC-3 ATM, MM For further description of the output from the command, see the JUNOS System Basics and Services Command Reference .
1. Check the red alarm LED on the craft interface: ■ If it is lit, issue the following CLI command for information about the cause of an alarm condition: user@host> show chassis alarms For a list of messages that can appear in the output, see “ Hardware and Interface Alarm Messages ” on page 80.
Chapter 13 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.
Table 18: Tools and Parts Required (continued) Components Tool or part Serial cable to AUX/MODEM or CONSOLE Routing Engine port Flat-blade ( – ) screwdriver, 2.
3. Grasp the handle on the faceplate and slide the tray about halfway out of the chassis. CAUTION: To avoid injury, keep tools and your fingers away from the fans as you slide the fan tray out of the chassis.
Figure 28: Installing a Fan Tray Replacing a CFEB One or two CFEBs can install into the uppermost slots in the rear of the chassis, as shown in Figure 2 . Only one CFEB is active at a time, with the optional second CFEB in reset mode. CFEBs are hot-pluggable, as described in “ Field-Replaceable Units (FRUs) ” on page 3.
(The effect of removing the active CFEB depends on whether a second CFEB is installed. For more information, see “ Replacing a CFEB ” on page 90.) 4. Loosen the thumbscrew on each ejector lever (shown in Figure 4 ), using a Phillips screwdriver if necessary.
4. Align the rear of the CFEB with the guides inside the chassis and slide it in completely. 5. Press the ejector lever at each end of the CFEB inward. 6. Tighten the thumbscrew on each ejector lever (shown in Figure 4 ) to seat the CFEB firmly in the chassis.
user@host> show chassis routing-engine Routing Engine status: Slot 0: Current state Master ... 3. If you are removing the master Routing Engine and a second Routing Engine is installed, issue the f.
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 System Basics and Services Command Reference . NOTE: The router might continue forwarding traffic for a few minutes after the request system halt command has been issued.
Figure 31: Removing a Routing Engine Figure 32: Removing an HCM Installing an HCM To install an HCM, follow this procedure (see Figure 33 and Figure 34 ): 1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
5. Align the rear of the Routing Engine with the guide rails inside the chassis and slide it in completely. CAUTION: Align the Routing Engine carefully with the guide rails and push it in evenly. Damage can result if it gets lodged in the rails because of uneven movement.
PICs are hot-removable and hot-insertable. A removed PIC no longer receives or transmits data, and removing or inserting a PIC briefly interrupts forwarding of traffic through the remaining PICs.
that use it (such as ATM and SONET/SDH interfaces) emit laser light that can damage your eyes. 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.
Figure 35: Removing a PIC Installing a PIC To install a PIC, follow this procedure (see Figure 36 ): 1. 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.
6. If the PIC uses fiber-optic cable, remove the rubber safety cap from each transceiver and the end of each cable. WARNING: Do not look directly into the ends of fiber-optic cables or into the transceivers on the interface faceplate.
9. 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. The LED is usually green; for more information, see the M10i Internet Router PIC Guide .
1. If the PIC connects to fiber-optic cable, have ready a rubber safety cap for each cable and transceiver. 2. If removing all cables connected to the PIC, use one of the following methods to take the PIC offline: ■ Press and hold the PIC offline button until its failure indicator LED lights, which usually takes about 5 seconds.
1. Have ready a length of the type of cable used by the PIC. For cable specifications, see the M10i Internet Router PIC Guide . 2. If the PIC cable connector port is covered by a rubber safety plug, remove the plug. WARNING: Do not look directly into the ends of fiber-optic cables or into the transceivers on the interface faceplate.
6. Repeat the previous steps for any additional cables. 7. If the PIC is offline (its failure indicator LED is lit), 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.
Figure 38: Small Form-Factor Pluggable (SFP) SFPs are hot-insertable and hot-removable. Removing an SFP does not interrupt PIC functioning, but the removed SFP no longer receives or transmits data.
1. Place an electrostatic bag or antistatic mat on a flat, stable surface to receive the SFP. Have ready a rubber safety cap for the SFP transceiver and the cable. 2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one of the ESD points on the chassis.
1. 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 ” on page 140.
(FRUs) ” on page 3. For more information about AC power supplies, see “ AC Power Supply ” on page 20. To replace an AC power supply, perform the following procedures: ■ Removing an AC Power Su.
Figure 39: Removing an AC Power Supply Installing an AC Power Supply To install an AC power supply, follow this procedure (see Figure 40 ): 1. Verify that the switch on the power supply faceplate is in the OFF ( O ) position.
receptacle. Verify that the power cord does not block access to router components or drape where people could trip on it. 8. Press the power switch on the faceplate to the ON ( | ) position.When the power supply has powered on successfully, the green OUTPUT OK LED lights steadily.
Disconnecting AC Power from the Router To disconnect AC power from the router, follow this procedure: 1. On the console or other management device connected to the Routing Engine, enter CLI operational mode and issue the following command to shut down the router software cleanly and preserve Routing Engine state information.
5. Press the power switches on the faceplates of two power supplies to the ON ( | ) position. When the power supply has powered on successfully, the green OUTPUT OK LED lights steadily. NOTE: After powering off a power supply, wait at least 60 seconds before turning it back on.
Removing a DC Power Supply The DC power supplies are located at the bottom rear of the chassis, as shown in Figure 2 . For information about power supply redundancy and replaceability, see “ Power Supplies ” on page 19. CAUTION: Do not leave a power supply slot empty for more than a short time while the router is operational.
Figure 41: Removing a DC Power Supply Installing a DC Power Supply To install a DC power supply, follow this procedure (see Figure 42 and Figure 43 ): 1. 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.
clockwise to secure the power cable lug. Apply between 8 lb-in. (.9 Nm) and 9 lb-in. (1.02 Nm) of torque to each screw. a. Insert the positive (+) source cable into the return terminal, which is labeled RTN . b. Insert the negative ( – ) source cable into the input terminal, which is labeled – 48V .
Figure 42: Installing a DC Power Supply Figure 43: Connecting Power Cables to a DC Power Supply Disconnecting and Connecting DC Power On a DC-powered router, the power cables from the external DC power sources connect to field-wiring terminals on each power supply.
■ Connecting DC Power to the Router on page 118 Disconnecting DC Power from the Router To disconnect DC power from the router, follow this procedure: 1.
Connecting DC Power to the Router Connect DC power to the router by inserting power cables into the field-wiring terminals on the faceplate of each power supply. Power and grounding cables are not supplied with the router. For information about the required cable type, see “ DC Power, Connection, and Cable Specifications ” on page 179.
b. Insert the negative ( – ) source cable into the input terminal, which is labeled – 48V . NOTE: The DC power supplies in slots P/S 0 and P/S 1 must be powered by dedicated power feeds derived from feed A, and the DC power supplies in slots P/S 2 and P/S 3 must be powered by dedicated power feeds derived from feed B.
If the LEDs are not lit in the appropriate pattern after 60 seconds, repeat the power supply and cable installation procedures described in “ Installing a DC Power Supply ” on page 114 and the previous steps in this section.
Replacing the Routing Engine The Routing Engines are hot-pluggable, as described in “ Field-Replaceable Units (FRUs) ” on page 3. For a description of the effect of removing a Routing Engine, see “ Routing Engine ” on page 14.
We recommend you run JUNOS Release 7.0 or later on the M10i router to support graceful switchover. NOTE: Router performance might change if the standby Routing Engine's configuration differs from the former master's configuration.
8. Place one hand under the Routing Engine to support it, slide it completely out of the chassis, and place it on the antistatic mat or in the electrostatic bag. Figure 45: Removing a Routing Engine Installing a Routing Engine To install a Routing Engine, follow this procedure (see Figure 46 ): 1.
Figure 46: Installing a Routing Engine Removing and Inserting the PC Card The slot labeled PC CARD on the Routing Engine faceplate accepts a Type I PC Card, as defined in the PC Card Standard published by the Personal Computer Memory Card International Association (PCMCIA).
2. When the PC card pops partially out of the slot, grasp the card and pull it straight out of the slot. Figure 47: Removing the PC Card Inserting the PC Card To insert the PC card, follow this procedure (see Figure 48 ): 1. Orient the PC card with the Juniper Networks logo facing in the direction specified on the Routing Engine faceplate.
Figure 48: Inserting the PC Card Removing and Inserting the Internal Flash Drive The internal flash drive is an optional component of the M10i router. If installed, it provides primary storage for the router. It accommodates software images, configuration files, and microcode.
is attached to a proper earth ground. For more information about ESD, see “ Preventing Electrostatic Discharge Damage ” on page 140. 3. Remove the Routing Engine as described in “ Removing a Routing Engine ” on page 121.
Figure 50: Inserting the Internal Flash Drive Configuring the Internal Compact Flash Disk After installing the internal compact flash disk for the first time, you must copy the software from the Routing Engine's hard disk to the internal compact flash disk.
The internal compact flash disk will now be the primary boot device. 4. You can verify correct boot order by issuing the show system boot-messages command. The output lists the devices mounted. The internal compact flash disk is located at ad0 . For more information about the command, see the JUNOS System Basics and Services Command Reference .
1. 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 ” on page 140.
■ Replacing the Management Ethernet Cable on page 131 ■ Replacing the Console or Auxiliary Cable on page 131 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 MGMT port on the Routing Engine.
c. Pull the cable connector straight out of the port. d. Disconnect the cable from the console or auxiliary device. 2. Plug the female end of the replacement serial cable into the appropriate CONSOLE or AUX/MODEM port. Figure 52 shows the external device ports on the Routing Engine.
Part 4 Appendixes ■ Safety and Regulatory Compliance Information on page 135 ■ Environmental Specifications on page 173 ■ Power Requirements, Guidelines, and Specifications on page 175 ■ Cable.
134 ■ Appendixes M10i Internet Router Hardware Guide.
Appendix A Safety and Regulatory Compliance Information To install and use the router safely, follow proper safety procedures. This appendix discusses the following safety and regulatory compliance in.
Attention Ce symbole d'avertissement indique un danger. Vous vous trouvez dans une situation pouvant causer des blessures ou des dommages corporels. Avant de travailler sur un équipement, soyez conscient des dangers posés par les circuits électriques et familiarisez-vous avec les procédures couramment utilisées pour éviter les accidents.
■ Compliance Statements for Acoustic Noise on page 171 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.
■ Restricted Access Area Warning on page 138 ■ Preventing Electrostatic Discharge Damage on page 140 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.
een slot en sleutel, of een ander veiligheidsmiddel, en welke beheerd wordt door de overheidsinstantie die verantwoordelijk is voor de locatie. Varoitus Tämä laite on tarkoitettu asennettavaksi paikkaan, johon pääsy on rajoitettua.
speciellt verktyg, lås och nyckel, eller annan säkerhetsanordning, och kontrolleras av den auktoritet som ansvarar för området. Preventing Electrostatic Discharge Damage Many router hardware components are sensitive to damage from static electricity.
Figure 55: Placing a Component into an Electrostatic Bag Fire Safety Requirements In the event of a fire emergency involving routers and other network equipment, the safety of people is the primary concern.
Any equipment in a room in which a chemical fire extinguisher has been discharged is subject to premature failure and unreliable operation. The equipment is considered to be irreparably damaged. NOTE: To keep warranties effective, do not use a dry chemical fire extinguisher to control a fire at or near a Juniper Networks router.
■ Other countries — International Electromechanical Commission (IEC) 60364, Part 1 through Part 7. ■ Evaluated to the TN power system. ■ Locate the emergency power-off switch for the room in which you are working so that if an electrical accident occurs, you can quickly turn off the power.
Aviso Este equipamento deverá estar ligado à terra. Certifique-se que o host se encontra ligado à terra durante a sua utilização normal. ¡Atención! Este equipo debe conectarse a tierra. Asegurarse de que el equipo principal esté conectado a tierra durante el uso normal.
Aviso Este dispositivo possui mais do que uma conexão de fonte de alimentação de energia; para poder remover a fonte de alimentação de energia, deverão ser desconectadas todas as conexões existentes.
alterna (CA); cortar la alimentación desde el interruptor automático en los equipos de corriente continua (CC). Varning! Innan du arbetar med ett chassi eller nära strömförsörjningsenheter skall du för växelströmsenheter dra ur nätsladden och för likströmsenheter bryta strömmen vid överspänningsskyddet.
Warnung Verwenden Sie ausschließlich Kupferleiter. Avvertenza Usate unicamente dei conduttori di rame. Advarsel Bruk bare kobberledninger. Aviso Utilize apenas fios condutores de cobre. ¡Atención! Emplee sólo conductores de cobre. Varning! Använd endast ledare av koppar.
Power Cable Warning (Japanese) WARNING: The attached power cable is only for this product. Do not use the cable for another product. DC Power Electrical Safety Guidelines and Warnings DC Power Electri.
■ Ensure that the polarity of the DC input wiring is correct. Under certain conditions, connections with reversed polarity might trip the primary circuit breaker or damage the equipment. ■ For personal safety, connect the green and yellow wire to safety (earth) ground at both the router and the supply side of the DC wiring.
circuito CC, mettere l'interruttore in posizione OFF e fissarlo con nastro adesivo in tale posizione. Advarsel Før noen av disse prosedyrene utføres, kontroller at strømmen er frakoblet likestrømkretsen.
Warnung Der Erdanschluß muß bei der Installation der Einheit immer zuerst hergestellt und zuletzt abgetrennt werden. Avvertenza In fase di installazione dell'unità, eseguire sempre per primo il collegamento a massa e disconnetterlo per ultimo.
Avvertenza Mostra la morsettiera dell alimentatore CC. Cablare l'alimentatore CC usando i connettori adatti all'estremità del cablaggio, come illustrato. La corretta sequenza di cablaggio è da massa a massa, da positivo a positivo (da linea ad L) e da negativo a negativo (da neutro a N).
Attention Quand des fils torsadés sont nécessaires, utiliser des douilles terminales homologuées telles que celles à circuit fermé ou du type à plage ouverte avec cosses rebroussées. Ces douilles terminales doivent être de la taille qui convient aux fils et doivent être refermées sur la gaine isolante et sur le conducteur.
Chassis Lifting Guidelines The weight of a fully configured chassis is about 79 lb (35.8 kg). Observe the following guidelines for lifting and moving the router: ■ Before moving the router, read the.
Varning! Läs installationsanvisningarna innan du kopplar systemet till dess strömförsörjningsenhet. Rack-Mounting Requirements and Warnings Ensure that the equipment rack into which the router is installed is evenly and securely supported, to avoid the hazardous condition that could result from uneven mechanical loading.
■ Juniper Networks router on asennettava telineeseen, joka on kiinnitetty rakennukseen. ■ Jos telineessä ei ole muita laitteita, aseta laite telineen alaosaan. ■ Jos laite asetetaan osaksi täytettyyn telineeseen, aloita kuormittaminen sen alaosasta kaikkein raskaimmalla esineellä ja siirry sitten sen yläosaan.
■ 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 da montare nel supporto.
■ 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.
Aviso Não utilize uma rampa com uma inclinação superior a 10 graus. ¡Atención! No usar una rampa inclinada más de 10 grados Varning! Använd inte ramp med en lutning på mer än 10 grader.
Waarschuwing Klasse-1 laser produkt. Varoitus Luokan 1 lasertuote. Attention Produit laser de classe I. Warnung Laserprodukt der Klasse 1. Avvertenza Prodotto laser di Classe 1. Advarsel Laserprodukt av klasse 1. Aviso Produto laser de classe 1. ¡Atención! Producto láser Clase I.
Varning! Lysdiodprodukt av klass 1. Laser Beam Warning WARNING: Do not stare into the laser beam or view it directly with optical instruments. Waarschuwing Niet in de straal staren of hem rechtstreeks bekijken met optische instrumenten. Varoitus Älä katso säteeseen äläkä tarkastele sitä suoraan optisen laitteen avulla.
Varoitus Koska portin aukosta voi emittoitua näkymätöntä säteilyä, kun kuitukaapelia ei ole kytkettynä, vältä säteilylle altistumista äläkä katso avoimiin aukkoihin.
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. Dispose of used batteries according to the manufacturer's instructions.
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.
¡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.
Varning! Vid åska skall du aldrig utföra arbete på systemet eller ansluta eller koppla loss kablar. Operating Temperature Warning WARNING: To prevent the router from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of 104 ο F (40 ο C).
¡Atención! Para impedir que un encaminador de la serie Juniper Networks router se recaliente, no lo haga funcionar en un área en la que se supere la temperatura ambiente máxima recomendada de 40 ο C. Para impedir la restricción de la entrada de aire, deje un espacio mínimo de 15,2 cm alrededor de las aperturas para ventilación.
Varning! Slutlig kassering av denna produkt bör skötas i enlighet med landets alla lagar och föreskrifter. Agency Approvals The router complies with the following standards: ■ Safety ■ CAN/CSA-22.
■ ETSI EN-300386-2 Telecommunication Network Equipment. Electromagnetic Compatibility Requirements The router is designed to comply with the following standards: ■ NEBS ■ GR-63-Core: NEBS, Physi.
Declaration of Conformity Japan Translation: 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.
in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
172 ■ Safety Guidelines and Warnings M10i Internet Router Hardware Guide.
Appendix B Environmental Specifications ■ Router Environmental Specifications on page 173 Router Environmental Specifications Table 19 on page 173 specifies the environmental specifications required for normal router operation. In addition, the site should be as dust-free as possible.
174 ■ Router Environmental Specifications M10i Internet Router Hardware Guide.
Appendix C Power Requirements, Guidelines, and Specifications ■ Power Guidelines, Requirements, and Specifications on page 175 Power Guidelines, Requirements, and Specifications The router uses either AC or DC power. There are four load-sharing power supplies located at the bottom rear of the chassis, as shown in Figure 2 .
Radio Frequency Interference You can reduce or eliminate the emission of radio frequency interference (RFI) from your site wiring by using twisted-pair cable with a good distribution of grounding conductors.
■ Power consumption for minimum configuration: Base system + 1 CFEB + 2 HCMs + 1 Routing Engine + 1 PIC = 0.7 A + 1.4 A + 2(0.2 A) + 0.625 A = 0.7 A + 1.4 A + 0.4 A + 0.625 A = 3.125 A @ 48 V = 150 W DC ■ Power consumption for maximum configuration: Base system + 2 CFEBs + 2 HCMs + 2 Routing Engines + 8 PICs = 0.
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.
Table 21 on page 179 provides specifications and Figure 56 depicts the plug on the AC power cord provided for each country or region. Table 21: AC Power Cord Specifications Plug Type Electrical Specif.
Table 22 on page 180 summarizes the specifications for the grounding and power cables, which you supply. Table 22: DC Power and Grounding Cable Specifications Maximum Equal Length Quantity and Specification Cable Type None Two 14-AWG (2.5 mm 2 ) single-strand-count wire cables for each power supply Power None One 14-AWG (2.
cables insert into the field-wiring terminals located on each power supply — the input terminal is labeled -48V and the return terminal is labeled RTN . CAUTION: Before router installation begins, a licensed electrician must attach a cable lug to the grounding and power cables that you supply.
182 ■ Power Guidelines, Requirements, and Specifications M10i Internet Router Hardware Guide.
Appendix D Cable Specifications ■ Network Cable Specifications and Guidelines on page 183 ■ Cable Specifications for Routing Engine Management Interfaces on page 187 Network Cable Specifications and Guidelines The various PICs supported on the router accept different kinds of network cable, including multimode and single-mode fiber-optic cable.
Lasers generate a single wavelength of light, which travels in a straight line through the single-mode fiber. Compared with multimode fiber, single-mode fiber has higher bandwidth and can carry signals for longer distances. It is consequently more expensive.
transmit enough power to saturate the receivers on PICs that have a shorter reach. Specifically, LR transceivers can saturate IR PICs, and both IR and LR transceivers can saturate SR PICs. Transceivers in the same reach class can also saturate one another.
Factors that can cause link loss include higher-order mode losses, modal and chromatic dispersion, connectors, splices, and fiber attenuation. Table 23 on page 186 lists an estimated amount of loss for the factors used in the following sample calculations.
for seven connectors (0.5 dB per connector, or 3.5 dB). The power margin ( P M ) is calculated as follows: P M = P B – LL P M = 13 dB – 8 km (0.5 dB/km) – 7 (0.
188 ■ Cable Specifications for Routing Engine Management Interfaces M10i Internet Router Hardware Guide.
Appendix E Contacting Customer Support and Returning Hardware This appendix describes how to return the router or individual components to Juniper Networks for repair or replacement: ■ Locating Comp.
PIC 1 REV 04 750-003036 HD0124 4x E1, RJ48 PIC 2 REV 01 750-002982 HC7606 1x Tunnel PIC 3 REV 05 750-003845 HF7007 1x 800M Crypto Most components also have a small rectangular serial number ID label (see Figure 58 ) attached to the component body.
HCM Serial Number ID Label The serial number ID label on an HCM is located near the front on the right side, as shown in Figure 60 . Figure 60: HCM Serial Number ID Label PIC Serial Number ID Label The serial number ID label on a PIC is located on the right side when the PIC is horizontal, as it is when installed in the router.
Power Supply Serial Number ID Label The serial number ID label on a power supply is located on the power supply faceplate, as shown in Figure 62 and Figure 63 .
Routing Engine Serial Number ID Label The serial number ID label on a Routing Engine is located on the left side, near the back, as shown in Figure 62 . 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.
Information You Might Need to Supply to JTAC When requesting support from JTAC by telephone, be prepared to provide the following information: ■ Your existing case number, if you have one ■ Detail.
4. The support representative validates your request and issues an RMA number for return of the component. 5. Pack the router or component for shipment, as described “ Packing the Router for Shipment ” on page 195 or “ Packing Components for Shipment ” on page 196.
4. Shut down power to the router by pressing the power switch for all power supplies to the off ( O ) position. On both AC and DC power supplies, the switch is located on the power supply faceplate.
■ Place individual boards in electrostatic bags. ■ Write the RMA number on the exterior of the box to ensure proper tracking. CAUTION: Do not stack any of the router components.
198 ■ Packing Components for Shipment M10i Internet Router Hardware Guide.
Appendix F Cable Connector Pinouts This chapter describes the pinouts for the following cable connectors: ■ RJ-45 Connector Pinouts for the Routing Engine MGMT Port on page 199 ■ DB-9 Connector Pinouts for the Routing Engine AUX/MODEM and CONSOLE Ports on page 200 ■ RJ-48 Cable Pinouts for E1 and T1 PICs on page 200 ■ X.
DB-9 Connector Pinouts for the Routing Engine AUX/MODEM and CONSOLE Ports The ports on the Routing Engine labeled AUX/MODEM and CONSOLE are DB-9 receptacles that accept RS-232 (EIA-232) cable. The AUX/MODEM port connects the Routing Engine to a laptop, modem, or other auxiliary unit, and the CONSOLE port connects it to a management console.
Table 27: RJ-48 Connector to RJ-48 Connector (Straight) Pinout (continued) Signal RJ-48 Pin (Data numbering form) RJ-48 Pin (on T1/E1 PIC) (Data numbering form) RX, Tip, + 2 2 TX, Ring, – 4 4 TX, Ti.
Table 28: RJ-48 Connector to RJ-48 Connector (Crossover) Pinout (continued) Signal RJ-48 Pin (Data numbering form) RJ-48 Pin (on T1/E1 PIC) (Data numbering form) No connect No connect 8 No connect No .
Table 29: RJ-48 Connector to DB-15 Connector (Straight) Pinout (continued) Signal DB-15 Pin (Data numbering form) RJ-48 Pin (on T1/E1 PIC) (Data numbering form) No connect No connect 14 No connect No .
■ 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). Table 31 on page 204 describes the V.35 cable pinouts. ■ An X.21 connection requires an DB-25 to X.
Table 31: DB-25 Connector to V.35 Connector Pinout (continued) Description V.35 Pin Signal DB-25 Pin Data Carrier Detect F DCD 8 Table 32: DB-25 Connector to DB-15 (X.
Figure 67: VHDCI to RJ-21 Cable Table 33 on page 206 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.
Part 5 Index ■ Index on page 209 Index ■ 207.
208 ■ Index M10i Internet Router Hardware Guide.
Index Symbols #, comments in configuration statements ...................xix ( ), in syntax descriptions ............................................xix < >, in syntax descriptions .......................................xix [ ], in configuration statements .
transmission distance, maximum ................183 wavelength ranges .......................................183 grounding See DC power and grounding cables PIC connecting during initial installation ..............61 connecting during maintenance .....
for maintenance or replacement .................118 disconnection instructions ..................................117 lugs ..................................................................... 179 specifications ........................................
higher-order mode loss (HOL) ....................................183 hot-removable and hot-insertable components See field-replaceable units humidity (relative), acceptable ...................................173 I immunity standards ..................
CFEB ..................................................................... 12 DC power supply ..................................................22 HCM ..................................................................... 17 PIC .......................
connection instructions during initial installation ................................................. 62 connection instructions for maintenance ............................................ 111 disconnection instructions ...........................111 budget calculation .
SNMP process .......................................................31 status command for displaying ................................77 tools required ........................................................87 S safety information ....................
power system .......................................................85 U U (rack unit) .................................................................42 unicast routing protocols IPv4 .................................................................
デバイスJuniper Networks M10iの購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Juniper Networks M10iをまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはJuniper Networks M10iの技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Juniper Networks M10iの取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Juniper Networks M10iで得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Juniper Networks M10iを既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はJuniper Networks M10iの不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Juniper Networks M10iに関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちJuniper Networks M10iデバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
