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Active DAC cables have signal amplification and equalization built into the cable
assembly.

Table 30 on page 81

describes the passive QSFP+ DAC breakout cable

specifications.

Table 29: QSFP+ DAC Passive Breakout Cable Specifications

Specifications

Product SKU

40-Gbps full-duplex serial transmission

Rate

QFX-QSFP-DACBO-1M

Copper pigtail

Connector type

3.3 V

Supply voltage

–40

C to 85

Storage temperature

Twinax

Cable type

30 AWG

Wire AWG

1 in. (2.54 cm)

Minimum cable bend radius

100 ohms

Cable characteristic impedance

4.3 nsec/m

Time delay

1 m (3.3 ft)

Length

40-Gbps full-duplex serial transmission

Rate

QFX-QSFP-DACBO-3M

Copper pigtail

Connector type

3.3 V

Supply voltage

–40

C to 85

Storage temperature

Twinax

Cable type

30 AWG

Wire AWG

1 in. (2.54 cm)

Minimum cable bend radius

100 ohms

Cable characteristic impedance

4.3 nsec/m

Time delay

3 m (9.9 ft)

Length

QFX5100 Switch Hardware Guide

Содержание QFX5100

Страница 2: ...evise this publication without notice QFX5100 Switch Hardware Guide Copyright 2014 Juniper Networks Inc All rights reserved The information in this document is current as of the date on the title page...

Страница 3: ...ents and Functionality 9 Supported Environments for QFX Series Switches 9 Chapter 2 Chassis 13 Chassis Physical Specifications for a QFX5100 Switch 13 Management Panel of a QFX5100 Switch 14 Port Pane...

Страница 4: ...es 57 Interface Support for the QFX5100 Switch 57 Interface Specifications for SFP SFP and QSFP Transceivers for the QFX Series 61 Interface Specifications for SFP DAC Cables for the QFX Series 73 Int...

Страница 5: ...rning 121 Class 1M Laser Radiation Warning 121 Class 1 Laser Product Warning 121 Class 1 LED Product Warning 122 Laser Beam Warning 122 Unterminated Fiber Optic Cable Warning 123 Chapter 14 Installati...

Страница 6: ...Band Management 181 Connecting QFX5100 96S Switches in a Virtual Chassis 182 Connecting a QFX5100 Switch in a Virtual Chassis Fabric 183 Chapter 18 Performing Initial Configuration 185 Configuring a...

Страница 7: ...5100 Switch 227 Chapter 25 Returning Hardware 229 Returning a QFX5100 Switch or Component for Repair or Replacement 229 Locating the Serial Number on a QFX5100 Switch or Component 229 Listing the Chas...

Страница 9: ...Fan Module Used in QFX5100 96S Switches 26 Figure 15 Air In Airflow Through 1 U QFX5100 Switch Chassis 28 Figure 16 Air In Airflow Through 2 U QFX5100 Switch Chassis 28 Figure 17 Air Out Airflow Thro...

Страница 10: ...ch 173 Figure 40 Connecting an AC Power Cord to an AC Power Supply in a 1 U QFX5100 Switch 175 Figure 41 Connecting an AC Power Cord to an AC Power Supply in a 2 U QFX5100 Switch 175 Figure 42 DC Powe...

Страница 11: ...in the QFX Series Horizontal Orientation 208 Chapter 23 Viewing System Information 213 Figure 62 Chassis Status LEDs on a QFX5100 Switch 213 Figure 63 Management Port LEDs on a QFX5100 Switch 216 Figu...

Страница 13: ...upply 35 Table 11 Airflow Direction in QFX5100 AC Power Supplies 37 Part 2 Planning Chapter 6 Site Preparation 43 Table 12 Site Preparation Checklist 43 Table 13 Site Electrical Wiring Guidelines 46 T...

Страница 14: ...TP Fiber Optic Crossover Cable Pinouts 90 Table 36 Cable Specifications for Console and Management Connections for the QFX Series 91 Table 37 Estimated Values for Factors Causing Link Loss 94 Chapter...

Страница 15: ...ormation in the latest release notes differs from the information in the documentation follow the product Release Notes Juniper Networks Books publishes books by Juniper Networks engineers and subject...

Страница 16: ...se or implementation Best practice Table 1 on page xvi defines notice icons used in this guide Table 2 Notice Icons Description Meaning Icon Indicates important features or instructions Informational...

Страница 17: ...es review the JTAC User Guide located at http www juniper net us en local pdf resource guides 7100059 en pdf Product warranties For product warranty information visit http www juniper net support warr...

Страница 18: ...tools juniper net SerialNumberEntitlementSearch Opening a Case with JTAC You can open a case with JTAC on the Web or by telephone Use the Case Management tool in the CSC at http www juniper net cm Ca...

Страница 19: ...PART 1 Overview QFX5100 Overview on page 3 Chassis on page 13 Cooling System and Airflow on page 25 Modules on page 33 Power Supply on page 35 1 Copyright 2014 Juniper Networks Inc...

Страница 21: ...es offer two compact 1 U models and a 2 U model that provide wire speed packet performance very low latency and rich set of Layer 2 and Layer 3 features In addition to a high throughput Packet Forward...

Страница 22: ...nd leaf topology QFX5100 24Q As shown in Figure 2 on page 5 the QFX5100 24Q is a 40 Gigabit Ethernet QSFP switch with 24 high density QSFP ports Each QSFP port can operate as a native 40 Gbps port or...

Страница 23: ...re 3 on page 5 the QFX EM 4Q is an expansion module for the QFX5100 24Q The module provides 4 additional QSFP ports that can be hot inserted or hot removed from the switch Figure 3 QFX EM 4Q Expansion...

Страница 24: ...eatures are supported on QFX Series devices see QFX Series Software Features Overview You manage the switch using the Junos OS command line interface CLI accessible through the console and out of band...

Страница 25: ...o port 3 AC 48 small form factor pluggable plus SFP and 6 QSFP transceivers QFX5100 48S 3AFI Air Out port to FRU 2 AC 48 SFP and 6 QSFP transceivers QFX5100 48S AFO Air Out port to FRU 3 AC 48 SFP and...

Страница 26: ...n CAUTION Replace a failed power supply with a blank panel or new power supply within one minute of removal to prevent chassis overheating The switch continues to operate with only one power supply ru...

Страница 27: ...vice If one power supply fails or is removed the second power supply balances the electrical load without interruption To provide power redundancy to the system both power supplies must be installed C...

Страница 28: ...embers nodes spine and leaf ring NA NA Topology QFX3500 13 2X51 D20 13 2X50 D15 12 2X50 D10 11 3X30 11 1 Initial Software Release 16 leaf only 10 16 128 1 Number of members nodes spine and leaf ring c...

Страница 29: ...51 D20 NA NA 13 2X51 D20 Initial Software Release NA 4 NA NA 1 Number of members nodes NA ring NA NA Topology Related Documentation QFX Series Virtual Chassis Software Features Overview QFabric System...

Страница 31: ...he QFX5100 Switch Chassis Weight Depth Width Height Product SKU With FRUs installed 22 lbs 9 97 kg 20 48 in 52 cm 17 36 in 44 1 cm 1 72 in 4 3 cm QFX5100 24Q With FRUs installed 21 8 lbs 9 8 kg 20 48...

Страница 32: ...Product SKUs 3 1 Power supply units Management panel 2 Fan modules Figure 6 QFX5100 96S FRU End Figure 7 Management Panel Components on 1 U Product SKUs QFX5100 RUNNING JUNOS g050335 1 1 3 2 2 3 4 5 4...

Страница 33: ...arm Red indicates a hardware fault such as a power failure or a system shutdown due to system over heating Amber indicates a major or minor alarm SYS System Unlit indicates the switch is powered off o...

Страница 34: ...Management on page 181 C1 Use the SFP connector for 1000 BaseX USB port for image updates Console port RJ 45 to support RS 232 serial ports The LEDs above the port indicate status and link Related Do...

Страница 35: ...o remaining QSFP uplink ports on each QFX5100 48S Node device connect to the data plane network through the QFX3008 I Interconnect devices See Interface Specifications for SFP SFP and QSFP Transceiver...

Страница 36: ...ch QSFP socket can be configured to support 40 GbE or as a set of 4 independent 10 GbE ports using breakout cables channelization mode Any of the 24 ports can be configured as either uplink or access...

Страница 37: ...for channelization different ports are restricted If you attempt to channelize a restricted port the configuration is ignored The following system modes are available on the QFX5100 24Q switch Defaul...

Страница 38: ...es are recommended in the master backup or linecard role When mixed with QFX3500 or QFX3600 devices configure the QFX5100 24Q in the master and backup roles See Connecting QFX Series Switches in a Vir...

Страница 39: ...ablished and there is link activity NOTE When configured for channelized 10 Gigabit Ethernet the LED is lit green when at least one of the four 10 Gigabit Ethernet SFP breakout links is established Bl...

Страница 40: ...al ports are supported Figure 12 on page 22 shows the port panel of a QFX5100 96S switch Figure 12 QFX5100 96S Switch Port Panel 3 1 40 Gigabit Ethernet ports 8 Electrostatic Discharge ESD terminal 2...

Страница 41: ...P ports on the switch PIC 0 are supported In this mode the eight QSFP ports are not supported and cannot be channelized There is no packet loss for packets of any size in this mode Default mode All 96...

Страница 42: ...terconnecting the same two member switches a Link Aggregation Group LAG bundle is automatically formed when the VCPs are on interfaces supporting identical speeds For instance if you have two 40 Gigab...

Страница 43: ...age 25 Do Not Install Components with Different Airflow or Wattage in the Switch on page 29 Fan Module Status on page 30 Fan Modules The fan modules in QFX5100 switches are hot insertable and hot remo...

Страница 44: ...out thermal shutdown NOTE All fan modules must be installed for optimal operation of the switch The fan modules are available in two product SKUs that have different airflow directions FRU to port air...

Страница 45: ...AN AFI Figure16onpage28 QFX5100 96S 850 W QFX5100 96S FANAFI You must install only power supplies that have AIR OUT labels in switches in which the fan modules have AIR OUT labels Port to FRU that is...

Страница 46: ...Figure 15 Air In Airflow Through 1 U QFX5100 Switch Chassis Figure 16 Air In Airflow Through 2 U QFX5100 Switch Chassis Copyright 2014 Juniper Networks Inc 28 QFX5100 Switch Hardware Guide...

Страница 47: ...f the fan modules have AIR IN labels the power supplies must also have AIR IN labels if the fan modules have AIR OUT labels the power supplies must also have AIR OUT labels Mixing components with diff...

Страница 48: ...odule slot It indicates the status of all the fan modules Table 9 on page 30 describes the Status LED on the fan module in a QFX5100 switch Table 9 Fan Module LED Description LED State The individual...

Страница 51: ...ort 2 ports can be used for port channelization by configuring the system mode for 104 port mode NOTE Expansion modules and transceivers are not shipped with the switch and must be ordered separately...

Страница 52: ...on module is online and functioning normally Green Related Documentation Installing an Expansion Module in a QFX5100 Switch on page 198 Removing an Expansion Module from a QFX5100 Switch on page 199 I...

Страница 53: ...nction The AC power supply in 1 U models of QFX5100 is 650 W the AC power supply in the 2 U model QFX5100 96S is 850 W Both power supplies look identical Be sure to use the correct power supply for yo...

Страница 54: ...w A power supply with the label AFO or a gold colored handle denotes port to FRU airflow Figure 22 Power Supply Handle Detail 1 Fan icon on handle CAUTION Verify that the airflow direction on the powe...

Страница 55: ...Field Replaceable Units in a QFX5100 Switch on page 8 AC Power Specifications for a QFX5100 Switch on page 97 Connecting AC Power to a QFX5100 Switch on page 173 DC Power Supply in a QFX5100 Switch T...

Страница 56: ...pply for QFX5100 96S Switches 3 1 Ejector lever Terminal block 4 2 Handle ESD grounding point NOTE The DC power supply in the switch has four terminals labeled V V V and V see Figure 25 on page39 for...

Страница 57: ...4 Field Replaceable Units in a QFX5100 Switch on page 8 DC Power Specifications for a QFX5100 Switch on page 99 Prevention of Electrostatic Discharge Damage on page 142 Connecting DC Power to a QFX510...

Страница 58: ...ormation A protective earthing terminal bracket is provided in the accessory kit for connecting the switch to earth ground This L shaped bracket attaches to a post on the QFX5100 switch left front mou...

Страница 59: ...n on page 43 Rack and Cabinet Requirements on page 51 Port and Interface Specifications on page 55 Cable Specifications on page 89 Planning Power Requirements on page 97 Compliance on page 101 41 Copy...

Страница 61: ...em or Task Architecture Planning a Virtual Chassis Fabric Deployment on page 48 Planning a QFX3000 G QFabric System Deployment Planning a QFX3000 M QFabric System Deployment Determine whether the QFX5...

Страница 62: ...es for the QFX Series on page 73 Acquire cables and connectors Determine the number of cables needed based on your planned configuration Review the maximum distance allowed for each cable Choose the l...

Страница 63: ...atic Discharge Damage on page 142 Environmental Requirements and Specifications for EX Series Switches Environmental Requirements and Specifications for a QFX3100 Director Device Environmental Require...

Страница 64: ...oblems with electromagnetic compatibility EMC particularly from lightning or radio transmitters seek expert advice Some of the problems caused by strong sources of electromagnetic interference EMI are...

Страница 65: ...ments and Specifications for a QFX5100 Switch The switch must be installed in a rack or cabinet It must be housed in a dry clean well ventilated and temperature controlled environment Follow these env...

Страница 66: ...ance with Articles 110 16 110 17 and 110 18 of the National Electrical Code ANSI NFPA 70 Related Documentation Clearance Requirements for Airflow and Hardware Maintenance for a QFX5100 Switch on page...

Страница 67: ...ations for a QFX5100 Switch on page 97 AC Power Specifications for a QFX3600 or QFX3600 I Device AC Power Specifications for a QFX3500 Device AC Power Supply Specifications for EX4300 Switches Calcula...

Страница 68: ...P Transceivers for the QFX Series on page 61 Interface Specifications for SFP DAC Cables for the QFX Series on page 73 Pluggable Transceivers Supported on EX Series Switches QSFP Direct Attach Cables...

Страница 69: ...Rack Requirement Use a four post rack that provides bracket holes or hole patterns spaced at 1 U 1 75 in or 4 45 cm increments and that meets the size and strength requirements to support the weight...

Страница 70: ...71 1 cm and 36 in 91 4 cm front to back The rack must be strong enough to support the weight of the switch Ensure that the spacing of rails and adjacent racks allows for proper clearance around the s...

Страница 71: ...ng the hot air exhaust The QFX5100 fans exhaust hot air either through the vents on the port panel or through the fans and power supplies Install the switch in the cabinet in a way that maximizes the...

Страница 72: ...take vents of the chassis Leave at least 24 in 61 cm both in front of and behind the QFX5100 switch For service personnel to remove and install hardware components you must leave adequate space at the...

Страница 73: ...SB flash drives have been tested and are officially supported for the USB port in the QFX Series RE USB 1G S 1 gigabyte GB USB flash drive except QFX3100 Director device RE USB 2G S 2 GB USB flash dri...

Страница 74: ...rt is 9600 baud Table 18 on page 56 provides the pinout information for the RJ 45 console connector An RJ 45 cable and RJ 45 to DB 9 adapter are supplied with the QFX Series device NOTE If your laptop...

Страница 75: ...TRP4 7 Transmit receive data pair 4 TRP4 8 Related Documentation Management Port LEDs on a QFX3100 Director Device Management Port LEDs in the QFX3600 and QFX3600 I Device Management Port LEDs on a Q...

Страница 76: ...SFP access ports that can be configured to operate as 10 Gigabit Ethernet interfaces or as a single 40 Gigabit Ethernet interface Figure 27 on page 58 shows the location of SFP and QSFP ports for the...

Страница 77: ...sceivers JNP 1G SX 8PACK QFX SFP 1GE SX 1310 nm for up to 10 km transmission on single mode fiber SMF cable SFP module 1000BASE LX Gigabit Ethernet QFX SFP 1GE LX 850 nm for up to 10 m on OM1 grade fi...

Страница 78: ...ifications described in Interface Specifications for SFP DAC Cables for the QFX Series on page 73 Interface Specifications for QSFP DAC Breakout Cables for the QFX Series on page 79 and Interface Spec...

Страница 79: ...sive QSFP to SFP 10 Gigabit Ethernet DACBO cable assembly 30 AWG QFX QSFP DACBO 1M 3 meters Passive QSFP to SFP 10 Gigabit Ethernet DACBO assembly 30 AWG QFX QSFP DACBO 3M 5 meters Active QSFP to SFP...

Страница 80: ...topic describe the optical interface support over single mode fiber optic SMF and multimode fiber optic MMF cables and copper interface support over four pair Category 5 shielded twisted pair cables...

Страница 81: ...Product SKU number 1000BASE T 1000 Mbps Rate RJ 45 Connector type Fiber count Transmitter wavelength Minimum launch power Maximum launch power Minimum receiver sensitivity Maximum input power Not avai...

Страница 82: ...Transmitter wavelength 9 5 dBm Minimum launch power 3 dBm Maximum launch power 21 dBm Minimum receiver sensitivity 0 dBm Maximum input power Available DOM support MMF MMF MMF MMF Fiber type 50 125 m...

Страница 83: ...1000BASE LX 1000 Mbps Rate LC Connector type Dual Fiber count 1310 nm Transmitter wavelength 9 5 dBm Minimum launch power 3 dBm Maximum launch power 25 dBm Minimum receiver sensitivity 3 dBm Maximum i...

Страница 84: ...smitter wavelength 7 3 dBm Minimum launch power 1 3 dBm Maximum launch power 11 1 dBm Minimum receiver sensitivity 1 dBm Maximuminputpower Available DOM support MMF MMF MMF Fiber type 50 125 m 50 125...

Страница 85: ...dBm Maximum launch power 9 9 dBm Minimum receiver sensitivity 1 dBm Maximuminputpower Available DOM support MMF MMF MMF MMF MMF Fiber type 50 125 m 50 125 m 50 125 m 62 5 125 m 62 5 125 m Core claddi...

Страница 86: ...er 10GBASE LR 10 Gbps Rate LC Connector type 1310 nm Transmitter wavelength 8 2 dBm Minimum launch power 0 5 dBm Maximum launch power 18 dBm Minimum receiver sensitivity 0 5 dBm Maximuminputpower Avai...

Страница 87: ...0 Gbps Rate LC Connector type Dual Fiber count 1550 nm Transmitter wavelength 4 7 dBm Minimum launch power 4 dBm Maximum launch power 11 3 dBm Minimum receiver sensitivity 1 dBm Maximuminputpower Avai...

Страница 88: ...d EX SFP 10GE ZR Product SKU Number 10GBASE ZR 10 Gbps Rate LC Connection Type Dual Fiber count 1550 nm Transmitter wavelength 0 Minimum launch power 5 dBM Maximum launch power 20 dBM Maximum receiver...

Страница 89: ...h female MTP connectors NOTE See Cable Specifications for QSFP Transceivers on page 89 for more information Connector type 12 Fiber count 850 nm Transmitter wavelength 7 6 dBm per lane Minimum launch...

Страница 90: ...Cable Specifications for QSFP Transceivers on page 89 for more information Connector type 12 Fiber count 850 nm Transmitter wavelength 4 3 dBm per lane Minimum launch power 1 dBm per lane Maximum laun...

Страница 91: ...pecifications for SFP DAC Cables for the QFX Series on page 73 Interface Specifications for QSFP DAC Breakout Cables for the QFX Series on page 79 Interface Specifications for QSFP DAC Cables for the...

Страница 92: ...oes not describe which devices support these transceivers ForinformationaboutwhichtransceiversaresupportedonQFXSeriesdevices see the following topics Interface Support for the QFX3600 Device Interface...

Страница 93: ...Cable characteristic impedance 1 maximum Crosstalk between pairs 4 3 nsec m Time delay 1 m 3 3 ft Length 10 Gbps full duplex serial transmission Rate QFX SFP DAC 3M Copper pigtail Connector type 3 3 V...

Страница 94: ...pigtail Connector type 3 3 V Supply voltage 0 015 W Power consumption per end 40 C to 85 C Storage temperature Twinax Cable type 24 AWG Wire AWG 1 25 in 3 2 cm Minimum cable bend radius 100 ohms Cable...

Страница 95: ...bend radius 100 ohms Cable characteristic impedance 2 maximum Crosstalk between pairs 1 m 3 3 ft Length 10 Gbps full duplex serial transmission Rate QFX SFP DAC 3MA Copper pigtail Connector type 3 3...

Страница 96: ...mpedance 2 maximum Crosstalk between pairs 5 m 16 4 ft Length 10 Gbps full duplex serial transmission Rate QFX SFP DAC 7MA Copper pigtail Connector type 3 3 V Supply voltage 0 627 W Power consumption...

Страница 97: ...abric system Junos OS 12 2X50 D20 QFX3600 device as a standalone switch Junos OS 11 3R4 QFX3500 device as a standalone switch Junos OS 13 2X51 D10 QFX5100 device as a standalone switch NOTE This topic...

Страница 98: ...voltage 40 C to 85 C Storage temperature Twinax Cable type 30 AWG Wire AWG 1 in 2 54 cm Minimum cable bend radius 100 ohms Cable characteristic impedance 4 3 nsec m Time delay 1 m 3 3 ft Length 40 Gbp...

Страница 99: ...pedance 4 5 nsec m Time delay 10 m 32 8 ft Length Table 30 QSFP Active DAC Breakout Cable Specifications Specifications Product SKU 40 Gbps full duplex serial transmission Rate JNP QSFP DACBO 5MA Copp...

Страница 100: ...Specifications for QSFP DAC Cables for the QFX Series Quad small form factor pluggable plus QSFP direct attach copper DAC cables are suitable for connections between QFX3500 QFX3600 and QFX5100 devic...

Страница 101: ...unos OS 12 2X51 D10 QFX5100 device as a standalone switch NOTE This topic does not describe which devices support these transceivers ForinformationaboutwhichtransceiversaresupportedonQFXSeriesdevices...

Страница 102: ...100 ohms Cable characteristic impedance 1 maximum Crosstalk between pairs 4 3 nsec m Time delay 1 m 3 3 ft Length 40 Gbps full duplex serial transmission Rate QFX QSFP DAC 3M Copper pigtail Connector...

Страница 103: ...gtail Connector type 3 3 V Supply voltage 0 015 W Power consumption per end 40 C to 85 C Storage temperature Twinax Cable type 30 AWG Wire AWG 1 in 2 54 cm Minimum cable bend radius 100 ohms Cable cha...

Страница 104: ...100 ohms Cable characteristic impedance maximum Crosstalk between pairs 4 3 nsec m Time delay 5 m 16 4 ft Length 40 Gbps full duplex serial transmission Rate JNP QSFP DAC 7MA Copper pigtail Connector...

Страница 105: ...characteristic impedance 2 maximum Crosstalk between pairs 4 3 nsec m Time delay 10 m 32 8 ft Length Related Documentation Interface Specifications for SFP SFP and QSFP Transceivers for the QFX Series...

Страница 107: ...a QFabric system use 12 ribbon multimode fiber crossover cable with female MTP connectors The fiber can be either OM3 or OM4 These cables are not sold by Juniper Networks CAUTION To maintain agency ap...

Страница 108: ...4 Unused 5 Unused 6 Unused 7 Unused 8 Rx3 Receive 9 Rx2 Receive 10 Rx1 Receive 11 Rx0 Receive 12 Table 35 QSFP MTP Fiber Optic Crossover Cable Pinouts Pin Pin 12 1 11 2 10 3 9 4 8 5 7 6 6 7 5 8 4 9 3...

Страница 109: ...RJ 45 patch cable Category 5 cable or equivalent suitable for 1000BASE T operation Management port Related Documentation Console Port Connector Pinouts for the QFX Series on page 56 Management Port Co...

Страница 110: ...the maximum transmission distances can result in significant signal loss which causes unreliable transmission Attenuation and Dispersion in Fiber Optic Cable An optical data link functions correctly p...

Страница 111: ...f an actual system do not operate at the worst case levels To calculate the worst case estimate for fiber optic cable power budget P B for the link 1 Determine values for the link s minimum transmitte...

Страница 112: ...etermine the maximum value for link loss LL by adding estimated values for applicable link loss factors for example use the sample values for various factors as provided in Table 37 on page 94 here th...

Страница 113: ...m 1 dBm 2 dBm 1 dBm P M P M 6 dBm The calculated power margin is greater than zero indicating that the link has sufficient power for transmission Also the power margin value does not exceed the maximu...

Страница 115: ...bes the AC power specifications for a QFX5100 switch Table 38 AC Power Specifications for a QFX5100 Switch Specification Item Operating range 100 240 VAC AC input voltage 50 60 Hz all product SKUs AC...

Страница 116: ...ly with National Electrical Code NEC Sections 400 8 NFPA 75 5 2 2 and 210 52 and Canadian Electrical Code CEC Section 4 010 3 The cords that can be ordered for the QFX3500 QFX3600 QFX3600 I and QFX510...

Страница 117: ...e 142 AC Power Supply for a QFX5100 Switch on page 35 DC Power Specifications for a QFX5100 Switch Table 40 on page 99 describes the DC power specifications for DC product SKUs of the QFX5100 switch T...

Страница 118: ...current rating 300 W QFX5100 48S QFX5100 24Q Typical power consumption 315 W QFX5100 96S 385 W QFX5100 48S QFX5100 24Q Maximum power consumption 470 W QFX5100 96S Related Documentation DC Power Supply...

Страница 119: ...ety IEC 60825 1 IEC 60950 1 2005 Information Technology Equipment Safety CB Scheme report UL 60950 1 Information Technology Equipment Safety EMC EN 55022 Class A CISPR 22 Class A Australian Communicat...

Страница 120: ...satisfaction Before installing this equipment users should ensure that it is permissible to connect the equipment to the facilities of the local telecommunications company The equipment must also be i...

Страница 121: ...equipment is Industrial Class A electromagnetic wave suitability equipment and seller or user should take notice of it and this equipment is to be used in the places except for home United States The...

Страница 122: ...ications Equipment The equipment is suitable for installation in locations where the National Electrical Code NEC applies The battery return connection is to be treated as an Isolated DC return DC I a...

Страница 127: ...ated Documentation Agency Approvals for the QFX Series on page 101 Compliance Statements for EMC Requirements for the QFX Series on page 102 109 Copyright 2014 Juniper Networks Inc Chapter 11 Complian...

Страница 129: ...afety Information on page 113 Radiation and Laser Warnings on page 119 Installation and Maintenance Safety Information on page 125 Power and Electrical Safety Information on page 141 111 Copyright 201...

Страница 131: ...in your working environment so be alert and exercise good judgment at all times Perform only the procedures explicitly described in the hardware documentation for this device Make sure that only auth...

Страница 132: ...n action could cause electrical shock Always ensure that all modules power supplies and cover panels are fully inserted and that the installation screws are fully tightened Related Documentation AC Po...

Страница 133: ...ant de travailler sur un quipement soyez conscient des dangers pos s par les circuits lectriques et familiarisez vous avec les proc dures couramment utilis es pour viter les accidents Warnung Dieses W...

Страница 134: ...o hardware devices in the EX Series product family which includes switches the EX Series Redundant Power System RPS and the XRE200 External Routing Engine This topic also applies to hardware devices i...

Страница 135: ...rreparably damaged NOTE Tokeepwarrantieseffective donotuseadrychemicalfireextinguisher to control a fire at or near a Juniper Networks switch or other network device provided by Juniper If a dry chemi...

Страница 136: ...stalleras och bytas ut av utbildad och kvalificerad personal Related Documentation General Safety Guidelines and Warnings on page 113 General Electrical Safety Guidelines and Warnings on page 141 AC P...

Страница 137: ...een fiberkabel aangesloten is dient blootstelling aan straling en het kijken in open openingen vermeden te worden Varoitus Koska portin aukosta voi emittoitua n kym t nt s teily kun kuitukaapelia ei o...

Страница 138: ...rnings on page 113 Laser and LED Safety Guidelines and Warnings for EX Series Switches Installation Instructions Warning on page 125 Grounded Equipment Warning on page 134 Laser and LED Safety Guideli...

Страница 139: ...ow power laser could permanently damage the eye Class 1M Laser Product Warning WARNING Class 1M laser product Waarschuwing Laserproducten van Klasse 1M IEC Varoitus Luokan 1M IEC lasertuotteita Attent...

Страница 140: ...ituote 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 Atenc...

Страница 141: ...t in de straal kijken of deze rechtstreeks bekijken met optische instrumenten Als u de laseruitvoer met bepaalde optische instrumenten bekijkt zoals bijv een oogloep vergrootgras of microscoop binnen...

Страница 142: ...abo de fibra n o terminado N o olhe fixa ou diretamente para o feixe ou com instrumentos pticos Visualizar a emiss o do laser com certos instrumentos pticos por exemplo lupas lentes de aumento ou micr...

Страница 143: ...RPS and the XRE200 External Routing Engine This topic also applies to hardware devices in the QFX Series WARNING Read the installation instructions before you connect the device to a power source Waar...

Страница 144: ...EX3300 Switch Connecting AC Power to an EX4200 Switch Connecting AC Power to an EX4300 Switch Connecting AC Power to an EX4500 Switch Connecting AC Power to an EX4550 Switch Connecting AC Power to an...

Страница 145: ...es for lifting and moving a QFX5100 switch CAUTION If you are installing the QFX5100 switch above 60 in 152 4 cm from the floor either remove the power supplies fan modules and any expansion modules b...

Страница 146: ...lage et une cl ou tout autre moyen de s curit L acc s aux zones de s curit est sous le contr le de l autorit responsable de l emplacement Warnung Diese Einheit ist zur Installation in Bereichen mit be...

Страница 147: ...134 Ramp Warning This topic applies to hardware devices in the EX Series product family which includes switches the EX Series Redundant Power System RPS and the XRE200 External Routing Engine This to...

Страница 148: ...ack When mounting the device on a partially filled rack load the rack from the bottom to the top with the heaviest component at the bottom of the rack If the rack is provided with stabilizing equipmen...

Страница 149: ...t est mont e dans un casier partiellement rempli charger le casier de bas en haut en pla ant l l ment le plus lourd dans le bas Si le casier est quip de dispositifs stabilisateurs installer les stabil...

Страница 150: ...eten i kabinettet Ved montering av denne enheten i et kabinett som er delvis fylt skal kabinettet lastes fra bunnen og opp med den tyngste komponenten nederst i kabinettet Hvis kabinettet er utstyrt m...

Страница 151: ...ljande riktlinjer ges f r att trygga din s kerhet Juniper Networks switch m ste installeras i en st llning som r f rankrad i byggnadens struktur Om denna enhet r den enda enheten p st llningen skall...

Страница 152: ...e EX Series Redundant Power System RPS and the XRE200 External Routing Engine This topic also applies to hardware devices in the QFX Series WARNING The device is intended to be grounded During normal...

Страница 153: ...n page 136 Lightning Activity Warning on page 137 Operating Temperature Warning on page 138 Product Disposal Warning on page 139 Battery Handling Warning WARNING Replacing a battery incorrectly might...

Страница 154: ...te con el mismo tipo o el equivalente recomendado por el fabricante Desechar las bater as gastadas seg n las instrucciones del fabricante Varning Explosionsfara vid felaktigt batteribyte Ers tt endast...

Страница 155: ...for rsake alvorlige brannskader eller smelte fast til polene Aviso Antes de trabalhar em equipamento que esteja ligado a linhas de corrente retire todas as j ias que estiver a usar incluindo an is fio...

Страница 156: ...itches EX8208 switches EX8216 switches QFX Series devices and XRE200 External Routing Engines and 113 F 45 C for EX2200 EX3300 EX3200 EX4200 EX4300 EX4500 and EX4550 switches To prevent airflow restri...

Страница 157: ...e ar deixe pelo menos um espa o de 15 2 cm volta das aberturas de ventila o Atenci n Para impedir que un encaminador de la serie Juniper Networks switch se recaliente no lo haga funcionar en un rea en...

Страница 158: ...g n todas las leyes y regulaciones nacionales Varning Slutlig kassering av denna produkt b r sk tas i enlighet med landets alla lagar och f reskrifter Related Documentation General Safety Guidelines a...

Страница 159: ...devices in the EX Series product family which includes switches the EX Series Redundant Power System RPS and the XRE200 External Routing Engine This topic also applies to hardware devices in the QFX S...

Страница 160: ...hat power is disconnected from a circuit Always check the circuit before starting to work Carefully look for possible hazards in your work area such as moist floors ungrounded power extension cords an...

Страница 161: ...mediately before inserting the component into the device WARNING For safety periodically check the resistance value of the ESD grounding strap The measurement must be in the range 1 through 10 Mohms W...

Страница 162: ...int location See Chassis Physical Specifications of an EX8216 Switch for the ESD point location See EX9204 Switch Hardware Overview for the ESD point location See EX9208 Switch Hardware Overview for t...

Страница 163: ...minimum 20 A in the building installation The power cord serves as the main disconnecting device for the AC powered device The socket outlet must be near the AC powered device and be easily accessibl...

Страница 164: ...Connecting AC Power to a QFX5100 Switch on page 173 AC Power Disconnection Warning This topic applies to hardware devices in the EX Series product family which includes switches the EX Series Redundan...

Страница 165: ...pular el chasis de un equipo o trabajar cerca de una fuente de alimentaci n desenchufar el cable de alimentaci n en los equipos de corriente alterna CA Varning Innan du arbetar med ett chassi eller n...

Страница 166: ...access area is one in accordance with Articles 110 16 110 17 and 110 18 of the National Electrical Code ANSI NFPA 70 NOTE Primary overcurrent protection is provided by the building circuit breaker Th...

Страница 167: ...topic applies to hardware devices in the EX Series product family which includes switches and the XRE200 External Routing Engine This topic also applies to hardware devices in the QFX Series WARNING...

Страница 168: ...sizione OFF e fissarlo con nastro adesivo in tale posizione Advarsel F r noen av disse prosedyrene utf res kontroller at str mmen er frakoblet likestr mkretsen S rg for at all str m er sl tt AV Dette...

Страница 169: ...r set WARNING When you install the device the ground connection must always be made first and disconnected last Waarschuwing Bij de installatie van het toestel moet de aardverbinding altijd het eerste...

Страница 170: ...bedradingsvolgorde verbonden is aarde naar aarde RTN naar RTN en 48 V naar 48 V De juiste bedradingsvolgorde losgemaakt is en 48 naar 48 V RTN naar RTN aarde naar aarde Varoitus Oikea yhdistettava kyt...

Страница 171: ...el alambre de tierra se debe conectar siempre primero y desconectar por ltimo Atenci n Wire a fonte de alimenta o de DC Usando os tal es apropriados na extremidade da fia o Ao conectar a pot ncia a se...

Страница 172: ...rdrahtung erforderlich ist sind zugelassene Verdrahtungsabschl sse z B f r einen geschlossenen Regelkreis oder gabelf rmig mit nach oben gerichteten Kabelschuhen zu verwenden Diese Abschl sse sollten...

Страница 173: ...ware devices in the EX Series product family which includes switches the EX Series Redundant Power System RPS and the XRE200 External Routing Engine This topic also applies to hardware devices in the...

Страница 174: ...lkraftssystem av TN typ Related Documentation General Safety Guidelines and Warnings on page 113 General Electrical Safety Guidelines and Warnings on page 141 Grounded Equipment Warning on page 134 Mu...

Страница 175: ...page 113 General Electrical Safety Guidelines and Warnings on page 141 AC Power Electrical Safety Guidelines on page 144 DC Power Electrical Safety Guidelines on page 147 157 Copyright 2014 Juniper N...

Страница 177: ...PART 4 Installation Installing the QFX5100 Device on page 161 Connecting the QFX5100 Device on page 171 Performing Initial Configuration on page 185 159 Copyright 2014 Juniper Networks Inc...

Страница 179: ...d mounting kit for this configuration Recessed mounting is primarily used in enclosed cabinets NOTE The 2 U product SKU QFX5100 96S can be rack mounted in either a standard two or four post cabinet To...

Страница 180: ...at houses the hardware components A QFX5100 switch is shipped in a cardboard carton secured with foam packing material The carton also contains an accessory box and quick start instructions CAUTION QF...

Страница 181: ...itch in a Rack or Cabinet You can mount all models of the QFX5100 switch on a four post 19 in rack or cabinet using the mounting kit provided with the device For four post rack or cabinet installation...

Страница 182: ...brackets provided For four post installations One pair of rear mounting blades These mounting blades support the rear of the chassis and must be installed provided One pair of front mounting rails Th...

Страница 183: ...of the rack to minimize the risk of the rack toppling Four Post Procedure To mount the switch on four posts in a rack using the provided mounting kit 1 Attach the ESD grounding strap to your bare wri...

Страница 184: ...6 Have one person grasp both sides of the switch lift it and position it in the rack so that the front bracket is aligned with the rack holes 7 Have a second person secure the front of the switch to t...

Страница 185: ...chassis is level by verifying that all the screws on the front of the rack are aligned with the screws at the back of the rack Related Documentation Rack Mounting and Cabinet Mounting Warnings on page...

Страница 186: ...tall spine devices at the top of the rack or cabinet in order of master routing engine RE backup RE other QFX5100s and then other leaf devices 2 Make a list of all of the serial numbers of the devices...

Страница 187: ...ured your devices as either autoprovisioned or preprovisioned the Virtual Chassis ports VCP are automatically configured If you configure the devices as nonprovisioned you must manually configure the...

Страница 189: ...DC Power to a QFX5100 Switch on page 176 Connecting a QFX Series Device to a Management Console on page 180 Connecting a QFX5100 Switch to a Network for Out of Band Management on page 181 Connecting Q...

Страница 190: ...following parts and tools available Protective earthing terminal bracket This bracket attaches to the QFX5100 switch chassis through the left front mounting bracket providing a protective earthing te...

Страница 191: ...able over the protective earthing terminal on the protective earthing terminal bracket 4 Secure the grounding lug to the protective earthing terminal with two nuts 5 Dress the grounding cable and ensu...

Страница 192: ...onnecting Earth Ground to a QFX5100 Switch on page 172 The switch gains additional grounding when you plug the power supply in the switch into a grounded AC power outlet by using the AC power cord app...

Страница 193: ...The switch powers on as soon as power is provided to the power supply There is no power switch on the device 7 Insert the power cord plug into an AC power source outlet 8 If the AC power source outle...

Страница 194: ...revention of Electrostatic Discharge Damage on page 142 Ensure that you have connected the switch chassis to earth ground CAUTION Before you connect power to the switch a licensed electrician must att...

Страница 195: ...er polarity The power source cables might be labeled and to indicate their polarity There is no standard color coding for DC power cables The color coding used by the external DC power source at your...

Страница 196: ...r chassis Do not connect the terminals to different sources For example connect 48 V from DC source feed A to the input terminals of one power supply and connect 48 V from feed B to the input terminal...

Страница 197: ...ted internally together as are the V terminals The same polarity terminal can be wired together from the same source to provide an additional current path in a higher power chassis Do not connect the...

Страница 198: ...the device NOTE If your laptop or PC does not have a DB 9 male connector pin and you want to connect your laptop or PC directly to the QFX Series use a combination of the RJ 45 cable and RJ 45 to DB 9...

Страница 199: ...t use the management ports to perform the initial configuration of the QFX5100 device You must configure the management ports before you can successfully connect to the QFX5100 switch using these port...

Страница 200: ...hes configured as standalone switches the Virtual Chassis feature is not applicable to QFX devices in a QFabric You may use QFX5100 96 switches as leaf devices in a Virtual Chassis Fabric VCF You conf...

Страница 201: ...logy In the spine and leaf architecture each spine device is interconnected to each leaf device A VCF supports up to twenty total devices and up to four devices can be configured into spine devices Su...

Страница 202: ...ll fixed SFP interfaces on QFX5100 96S switches can also be configured into VCPs BEST PRACTICE Use 40 Gigabit QSFP ports as VCPs Figure 48 on page 184 shows two QFX5100 24Q spine devices connected to...

Страница 203: ...configure the switch from the console 1 Connect the console port to a laptop or PC using the supplied RJ 45 cable and RJ 45 to DB 9 adapter The console CON port is located on the management panel of...

Страница 204: ...usable and supported NOTE The management ports em0 C0 and em1 C1 are found on the FRU end of the QFX5100 switch 9 Optional Configure the static routes to remote prefixes with access to the management...

Страница 205: ...g the Device on page 189 Replacing Components on page 193 Replacing Transceivers and Fiber Optic Cables on page 205 Routine Maintenance on page 211 Viewing System Information on page 213 187 Copyright...

Страница 207: ...llowing methods Connect a management device to the console CON port on a QFX5100 switch For instructions about connecting a management device to the console CON port see Connecting a QFX Series Device...

Страница 208: ...ng crond OK Stopping libvirtd daemon OK Shutting down ntpd OK Shutting down system logger OK Shutting down sntpc OK Stopping sshd OK Stopping vehostd OK Stopping watchdog OK Stopping xinetd OK Sending...

Страница 209: ...e procedure described in this topic The remainder of this topic uses rack to mean rack or cabinet NOTE When you remove multiple devices from a rack remove the device in the top of the rack first and p...

Страница 210: ...se the screwdriver to remove the mounting screws that attach the mounting blades attached to the rear of the rack or cabinet 4 Place the removed screws and mounting blades in a labeled bag You will ne...

Страница 211: ...eplaceable units FRUs in QFX5100 switches are Power supply Fan module Expansion module QFX5100 24Q only SFP transceiver QSFP transceiver All of the QFX5100 switch FRUs are hot insertable and hot remov...

Страница 212: ...ivers for the QFX Series on page 61 Interface Specifications for SFP DAC Cables for the QFX Series on page 73 Installing a Power Supply in a QFX5100 Switch The power supplies in a QFX5100 switch are h...

Страница 213: ...connected to a dedicated power source outlet NOTE If you have a Juniper J Care service contract register any addition change or upgrade of hardware components at https www juniper net customers csc m...

Страница 214: ...upply CAUTION Replace the power supply with a new power supply within 1 minute of removal to prevent chassis overheating To remove a power supply from a QFX5100 switch see Figure 51 on page 197 and Fi...

Страница 215: ...ll firmly to slide the power supply halfway out of the chassis 7 Place one hand under the power supply to support it and slide it completely out of the chassis Take care not to touch power supply comp...

Страница 216: ...grounding strap If a grounding strap is not available follow the alternative grounding method described in Step 1 of the following procedure Phillips screwdriver number 2 To install an expansion modul...

Страница 217: ...base jsp Failure to do so can result in significant delays if you need replacement parts This note applies if you change the type of power supply or add a new type of expansion module It does not appl...

Страница 218: ...trap to the ESD point on the chassis 2 Unscrew both captive screws on the faceplate of the expansion module by using your fingers If you are unable to unscrew the captive screws by using your fingers...

Страница 219: ...ve a replacement fan module at hand NOTE The fan module provides FRU to port or port to FRU airflow depending on the switch product SKU you purchase In legacy switches or switches with an LCD this air...

Страница 220: ...00 48S RUNNING JUN OS Figure 56 Installing a Fan Module in a 2 U QFX5100 96S Switch Related Documentation Removing a Fan Module from a QFX5100 Switch on page 202 Cooling System and Airflow in a QFX510...

Страница 221: ...bare wrist and connect the strap to the ESD point on the chassis 3 Using a Phillips screwdriver loosen the locking screw 3 or 4 turns 4 Grasp the handle on the fan module and squeeze the outside of th...

Страница 222: ...log and the system raises a minor alarm Related Documentation Cooling System and Airflow in a QFX5100 Switch on page 25 Field Replaceable Units in a QFX5100 Switch on page 8 Management Panel of a QFX5...

Страница 223: ...at you have taken the necessary precautions for safe handling of lasers see Laser and LED Safety Guidelines and Warnings for the QFX Series on page 120 Ensure that you have the following parts and too...

Страница 224: ...until you hear it click This prevents damage to the transceiver 5 Using the needlenose pliers pull the ejector lever out from the transceiver 6 Grasp the transceiver ejector lever and gently slide th...

Страница 225: ...nstall the transceiver is covered with a dust cover remove the dust cover and save it in case you need to cover the port later 4 Using both hands carefully place the transceiver in the empty port The...

Страница 226: ...Horizontal Orientation g050224 Related Documentation Removing a Transceiver from a QFX Series Device on page 205 Connecting a Fiber Optic Cable to a QFX Series Device on page 209 Disconnecting a Fibe...

Страница 227: ...am or view it directly with optical instruments even if the interface has been disabled 2 Carefully unplug the fiber optic cable connector from the transceiver 3 Cover the transceiver with a rubber sa...

Страница 228: ...cable connector into the optical transceiver 4 Secure the cables so that they are not supporting their own weight Place excess cable out of the way in a neatly coiled loop Placing fasteners on a loop...

Страница 229: ...re expensive to repair Attach a short fiber extension to the optical equipment Any wear and tear due to frequent plugging and unplugging is then absorbed by the short fiber extension which is easier a...

Страница 231: ...FRU side of the chassis next to the management ports see Figure 62 on page 213 Figure 62 Chassis Status LEDs on a QFX5100 Switch QFX5100 RUNNING JUNOS 4 1 RJ 45 console port C0N Status LEDs 5 2 USB po...

Страница 232: ...ng the AC power cords Power on the QFX5100 switch and monitor the status LEDs to ensure that Junos OS boots properly On steadily Amber The switch is powered off or halted Off Unlit SYS System Junos OS...

Страница 233: ...d Blinking Blue Related Documentation Management Panel of a QFX5100 Switch on page 14 show chassis alarms request chassis beacon Management Port LEDs on a QFX5100 Switch The management ports labeled C...

Страница 234: ...RJ 45 10 100 1000 Base T management Ethernet port C0 Table 43 on page 216 describes the management port LEDs Table 43 Management Port LEDs on a QFX5100 Switch Description State Color LED No link is es...

Страница 235: ...181 Access Port and Uplink Port LEDs on a QFX5100 Switch The Link Activity and Status LED configuration for QFX5100 switches use bi colored LEDs The two figures in this topic show the location of tho...

Страница 236: ...ed Blinking Green A 10 Gigabit Ethernet transceiver is installed in the port and link is established On steadily Green As shown in Figure 65 on page 217 there are four bi color LEDs for each QSFP port...

Страница 237: ...10 Gigabit Ethernet SFP breakout links is established Blinking All four LEDs blink to indicate the beacon function was enabled on the port Blinking Amber Related Documentation Management Panel of a Q...

Страница 238: ...ated Documentation Cooling System and Airflow in a QFX5100 Switch on page 25 Installing a Fan Module in a QFX5100 Switch on page 201 Removing a Fan Module from a QFX5100 Switch on page 202 AC Power Su...

Страница 239: ...ply fuse has failed If the AC OK LED is lit and the DC OK LED is unlit the AC power supply is installed properly but the power supply has an internal failure Related Documentation AC Power Supply for...

Страница 240: ...ower correctly Off Unlit Output The power supply is sending out power correctly On steadily Green An error has been detected in the power supply Replace the power supply as soon as possible To maintai...

Страница 243: ...support NOTE In the following procedure we assume that you are creating the emergency boot device on a QFX device You can create the emergency boot device on another Juniper Networks switch or router...

Страница 244: ...dev da0 bs 1048576 The device writes the installation media image to the USB device root device dd if var tmp jinstall vjunos usb 13 2 img of dev da0 bs 1048576 11006 1 records in 11006 1 records out...

Страница 245: ...the files named config juniper conf n where n is a number from 0 through 9 to a remote system or to an emergency boot device WARNING The recovery installation process completely overwrites the entire...

Страница 246: ...onfiguration as you did when the switch was shipped from the factory or restore the previously saved configuration file to the switch 7 Remove the emergency boot device Related Documentation Creating...

Страница 247: ...er JTAC as described in Contacting Customer Support to Obtain a Return Materials Authorization for a QFX Series Device or Component on page 233 NOTE Do not return any component to Juniper Networks unl...

Страница 248: ...bels on FRU Components on page 232 Listing the Chassis and Component Details Using the CLI To list the QFX5100 switch and components and their serial numbers use the show chassis hardware CLI operatio...

Страница 249: ...231 and Figure 70 on page 231 for examples of where to find the serial number ID On the QFX5100 24Q the serial number ID label is located next to the left expansion port on the port panel See Figure 7...

Страница 250: ...cautions to prevent electrostatic discharge ESD damage See Prevention of Electrostatic Discharge Damage on page 142 Retrieve the original shipping carton and packing materials Contact your JTAC repres...

Страница 251: ...pack and ship QFX5100 switch components Place individual FRUs in antistatic bags Ensure that the components are adequately protected with packing materials and packed so that the pieces are prevented...

Страница 252: ...o NOTE For international or direct dial options in countries without toll free numbers see http www juniper net support requesting support html If you are contacting JTAC by telephone enter your 11 di...

Страница 255: ...more hardware components have failed One or more hardware components have exceeded temperature thresholds An alarm condition configured on an interface has triggered a critical warning Minor yellow o...

Страница 256: ...n specify the ethernet fibre channel or management ethernet interface type NOTE Fibre Channel alarms are only valid on QFX3500 devices By default major alarms are configured for interface link down co...

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