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two high line power supplies or three low line must be installed in the switch for non-redundant
operation. In a redundant configuration, if one power supply fails or is removed, the remaining power
supplies assume the entire electrical load without interruption. In a base configuration, if one power
supply fails or is removed, one of the line cards is disabled. See 

"EX9253 Power System" on page

27

.

• Cooling system—The cooling system consists of four fan trays and an air filter unit. Each fan tray

contains two counter-rotating fans. The fan trays are installed on the rear panel of the chassis. A fully
configured switch needs all the four fan trays to operate normal. In the event of any fan failure, the
fan tray with the faulty fan must be replaced immediately. You cannot replace a single fan. If one or
more fans fail, you must replace the entire fan tray. Under normal operating conditions, the fans in
the fan trays run at less than full speed. If a fan tray fails or the ambient temperature rises above a
threshold, the speed of the remaining fan trays is automatically adjusted to keep the temperature
within the acceptable range. If the ambient maximum temperature specification is exceeded and the
system cannot be adequately cooled, the Routing Engine shuts down the line card that cannot be
cooled adequately is disabled. If the fire threshold temperature is exceeded, the Routing Engine shuts
down the system by disabling output power from each power supply. See 

"EX9253 Cooling System"

on page 21

.

EX9253 Cooling System

IN THIS SECTION

Fan Tray  |  22

Air Filter Unit  |  24

Fan Tray Status LEDs  |  25

Cooling System in the Power Supplies  |  26

Airflow Direction in the EX9253 Switch Chassis  |  26

The cooling system in an EX9253 switch consists of four fan trays and an air filter unit. The cooling
system components work together to keep all switch components within the acceptable temperature
range.

21

Summary of Contents for EX9253

Page 1: ...EX9253 Switch Hardware Guide Published 2022 07 01 ...

Page 2: ...uide Copyright 2022 Juniper Networks Inc All rights reserved The information in this document is current as of the date on the title page YEAR 2000 NOTICE Juniper Networks hardware and software products are Year 2000 compliant Junos OS has no known time related limitations through the year 2038 However the NTP application is known to have some difficulty in the year 2036 END USER LICENSE AGREEMENT...

Page 3: ...Component and Functionality Redundancy 20 EX9253 Cooling System 21 EX9253 Power System 27 EX9253 Line Cards 34 EX9253 6Q12C Line Card 35 EX9253 6Q12C M Line Card 41 2 Site Planning Preparation and Specifications Site Preparation Checklist for an EX9253 Switch 48 EX9253 Site Guidelines and Requirements 50 Environmental Requirements and Specifications for an EX9253 Switch 50 General Site Guidelines ...

Page 4: ...an EX Series Switch 69 RJ 45 to DB 9 Serial Port Adapter Pinout Information 69 RJ 45 Management Port Connector Pinout Information 70 3 Initial Installation and Configuration Unpacking and Mounting the EX9253 Switch 73 Unpacking an EX9253 Switch 73 Parts Inventory Packing List for an EX9253 Switch 74 Unpacking a Line Card Used in an EX9253 Switch 76 Register Products Mandatory to Validate SLAs 77 I...

Page 5: ...iguring an EX9253 Switch 104 4 Maintaining Components Routine Maintenance Procedures for EX9253 Switches 110 Maintaining the EX9253 Cooling System 110 Removing a Fan Tray from an EX9253 Switch 111 Installing a Fan Tray in an EX9253 Switch 112 Maintaining the Fan Tray in EX9253 Switches 114 Removing the Air Filter Unit from an EX9253 Switch 116 Installing the Air Filter Unit in an EX9253 Switch 117...

Page 6: ...ng Line Card Cables 140 Removing a Line Card from an EX9253 Switch 140 Installing a Line Card in an EX9253 Switch 143 Maintaining Transceivers 145 Remove a Transceiver 146 Install a Transceiver 148 Remove a QSFP28 Transceiver 151 Install a QSFP28 Transceiver 153 Maintain Fiber Optic Cables 155 Connect a Fiber Optic Cable 156 Disconnect a Fiber Optic Cable 157 How to Handle Fiber Optic Cables 157 5...

Page 7: ...190 Locating Serial Number ID Labels on FRU Components 190 Contact Customer Support to Obtain Return Material Authorization 193 Packing an EX9253 Switch or Component 194 Packing an EX9253 Switch 195 Packing EX9253 Switch Components for Shipping 196 7 Safety and Compliance Information General Safety Guidelines and Warnings 199 Definitions of Safety Warning Levels 200 Qualified Personnel Warning 202...

Page 8: ...es 225 AC Power Disconnection Warning 226 DC Power Electrical Safety Guidelines 227 DC Power Disconnection Warning 228 DC Power Grounding Requirements and Warning 230 DC Power Wiring Sequence Warning 230 DC Power Wiring Terminations Warning 232 Multiple Power Supplies Disconnection Warning 233 TN Power Warning 234 Agency Approvals for EX9253 Switches 235 Compliance Statements for EMC Requirements ...

Page 9: ...n routine maintenance and troubleshooting for the EX9253 switch After completing the installation and basic configuration procedures covered in this guide refer to the Junos OS documentation for information about further software configuration RELATED DOCUMENTATION EX9253 Switch Quick Start ix ...

Page 10: ...1 CHAPTER Overview EX9253 System Overview 2 EX9253 Chassis 12 EX9253 Cooling System 21 EX9253 Power System 27 EX9253 Line Cards 34 ...

Page 11: ...em 5 Power Supplies 5 ESD Point 6 Cable Management Brackets 7 Juniper Networks EX9253 Ethernet Switches provide high performance scalable connectivity and carrier class reliability for high density environments such as campus aggregation and data center networks The EX9253 switch has a throughput of up to 2 4 terabits per second Tbps The EX9253 switch is a modular system that provides redundancy f...

Page 12: ...panning Tree Protocol STP they collapse the core and aggregation layers thereby simplifying the network architecture and network operations In a data center you can use EX9253 switches to collapse core and aggregation layers In combined campus and data center environments EX9253 switches consolidate network layers to simplify the network architecture and operations MACsec support EX9253 12C8Q M li...

Page 13: ...C power supplies 2 Fan trays Host Subsystem Switching and routing functionality system management and system control functions of an EX9253 switch are performed by the host subsystem The host subsystem consists of two Routing Engines You must install either one or two Routing Engines in slots labeled RE0 and RE1 on the front panel of the chassis A base configuration EX9253 switch has one Routing E...

Page 14: ...f which can house QSFP pluggable transceivers and 12 built in QSFP28 ports each of which can house QSFP28 pluggable transceivers EX9253 6Q12C Line Card on page 35 EX9253 6Q12C M A line card with six built in QSFP ports each of which can house QSFP pluggable transceivers and 12 built in QSFP28 ports with Media Access Control Security MACsec capability each of which can house QSFP28 pluggable transc...

Page 15: ... 800 W AC 90 140 VAC 1600 W AC 180 260 VAC 1100 W DC 40 VDC through 72 VDC A base configuration EX9253 switch ships with three power supplies A redundant configuration EX9253 switch ships with four power supplies See EX9253 Power System on page 27 and EX9253 Switch Configurations on page 7 CAUTION Do not mix different types of power supplies AC and DC in the same chassis ESD Point The ESD point on...

Page 16: ...nt Bracket The air filter unit is installed on the cable management brackets EX9253 Switch Configurations Table 3 on page 7 lists the hardware configurations for an EX9253 switch and the components included in each configuration Table 3 EX9253 Switch Hardware Configurations Switch Configuration Configuration Components Model Number First Junos OS Release EX9253 BASE AC Chassis EX9253 CHAS 3RU 18 2...

Page 17: ...s EX9253 CHAS 3RU 18 2R1 One routing engine EX9253 RE Four fan trays JNP FAN 3RU Three DC power supplies JNP PWR1100 DC Cable management bracket and air filter unit JNP CM 3RU Blank panels for empty slots EX9253 LC BLNK EX9253 RED AC Chassis EX9253 CHAS 3RU 18 2R1 Two routing engines EX9253 RE Four fan trays JNP FAN 3RU Four AC power supplies JNP PWR1600 AC Cable management bracket and air filter ...

Page 18: ... Four DC power supplies JNP PWR1100 DC Cable management bracket and air filter unit JNP CM 3RU Blank panels for empty slots EX9253 LC BLNK NOTE You can install up to two line cards in any combination in the switch NOTE Line cards are not part of the base or redundant configuration You must order them separately NOTE Additional power supplies AC or DC must be purchased separately SEE ALSO EX9253 Po...

Page 19: ...tion Chassis EX9253 EX9253 Switch chassis Chassis Physical Specifications of an EX9253 Switch on page 12 PEM n One of the following JNP PWR1600 AC JNP PWR1100 DC n is a value in the range 0 3 The value corresponds to the power supply slot number AC or DC power supply EX9253 Power System on page 27 Routing Engine n EX9253 RE n is a value in the range 0 1 In base configuration only one entry appears...

Page 20: ... Card on page 35 EX9253 6Q12C M Line Card on page 41 PIC n Abbreviated name of the Physical Interface Card PIC n is a value in the range 0 1 The value corresponds to the slot number in which the PIC is installed Abbreviated name of the Physical Interface Card PIC EX9253 6Q12C Line Card on page 35 EX9253 6Q12C M Line Card on page 41 Xcvr n Abbreviated name of the transceiver n is a value equivalent...

Page 21: ...ower supply and with DC power supply Table 5 on page 12 summarizes the physical specifications of the EX9253 switch chassis Table 5 Physical Specifications of the EX9253 Switch Chassis Description Weight Width Depth Height AC powered chassis fully loaded with all FRUs 157 4 lb 71 4 kg 19 in 48 26 cm 36 5 in 92 7 cm with the cable management brackets air filter unit and handles for fans and power s...

Page 22: ...5 51 lb 2 5 kg 19 in 48 26 cm 5 43 in 13 79 cm 5 19 in 13 18 cm Line card 33 lb 14 97 kg 16 5 in 41 91 cm 22 37 in 56 82 cm 1 65 in 4 19 cm AC power supply 3 4 lb 1 54 kg 3 53 in 8 67 cm 9 26 in 23 52 cm 1 63 in 4 14 cm DC power supply 4 4 lb 1 99 kg 3 53 in 8 67 cm 10 8 in 27 43 cm 1 63 in 4 14 cm You can mount an EX9253 switch on four posts of a 19 in rack or cabinet Field Replaceable Units in a...

Page 23: ... instructions in Removing a Routing Engine from an EX9253 Switch on page 132 To install an AC power supply in an EX9253 switch follow instructions in Installing an AC Power Supply in an EX9253 Switch on page 125 To remove an AC power supply from an EX9253 switch follow instructions in Removing an AC Power Supply from an EX9253 Switch on page 124 To install a DC power supply in an EX9253 switch fol...

Page 24: ...t subsystem consists of two Routing Engines REs The RE is an integrated board that provides Routing Engine and Control Board functionality and supports virtualization If two REs are installed one functions as the primary and the other functions as the backup If the primary host subsystem or either of its components fails the backup can take over as the primary The RE is a hot removable and hot ins...

Page 25: ... to a management device for out of band management The port uses an autosensing RJ 45 connector to support 10 Mbps 100 Mbps or 1000 Mbps connections Two small LEDs on the port see Figure 7 on page 16 indicate the connection in use the Speed LED blinks in amber color when the speed is 1000 Mbps in green color when the speed is 100 Mbps and is unlit when the speed is 10 Mbps the Link Activity LED is...

Page 26: ... inputs based on the clock s priority USB The USB port provides a removable media interface Junos OS supports USB version 1 0 and later Table 6 on page 17 describes the functions of the LEDs on the REs Table 6 LEDs on the Routing Engines in an EX9253 Switch LED Color State Description ONLINE Green On steadily Both Junos OS and Linux are successfully loaded on the switch Blinking The switch is star...

Page 27: ...major alarm and a minor alarm at the same time Major alarm Indicates a critical condition that can cause the switch to stop functioning Possible causes include component removal failure or overheating or any major software failure Minor alarm Indicates a serious but nonfatal error condition such as a maintenance alert or a significant increase in component temperature Yellow On steadily Minor alar...

Page 28: ...SSD1 is not active or not being accessed Link Activity LED on the MGMT port Green Blinking The port and the link are active and there is link activity On steadily The port and the link are active but there is no link activity Off The port is not active Speed LED on the MGMT port Green On steadily Link speed is 1000 Mbps Amber On steadily Link speed is 100 Mbps Off Link speed is 10 Mbps Activity LE...

Page 29: ...ng processes run on top of a kernel that interacts with the Packet Forwarding Engine The host subsystem consists of two Routing Engines REs The RE is an integrated board that provides Routing Engine and Control Board functionality and supports virtualization If two REs are installed one functions as the primary and the other functions as the backup If the primary host subsystem or either of its co...

Page 30: ...e fan tray Under normal operating conditions the fans in the fan trays run at less than full speed If a fan tray fails or the ambient temperature rises above a threshold the speed of the remaining fan trays is automatically adjusted to keep the temperature within the acceptable range If the ambient maximum temperature specification is exceeded and the system cannot be adequately cooled the Routing...

Page 31: ... hot insertable and hot removable field replaceable unit FRU and contains two counter rotating fans see Figure 8 on page 22 and Figure 9 on page 23 The fan trays install vertically in the rear of the switch Figure 8 Fan Tray 22 ...

Page 32: ...ent fan tray or a blank panel in the fan tray slot shortly after removing a fan tray from the chassis The switch monitors the temperature of switch components Under normal operating conditions the fans in the fan trays run at less than full speed If a fan fails or the ambient temperature rises above a threshold the speed of the remaining fans is automatically adjusted to keep the temperature withi...

Page 33: ...ner cage that form the body see Figure 10 on page 24 The air filter is in between the outer filter cover and the inner cage The air filter unit is mounted on the cable management brackets and are held tightly by captive screws Figure 10 Air Filter Unit 1 Outer filter cover 3 Inner cage 2 Air filter 24 ...

Page 34: ... on page 25 Figure 11 Fan Tray Status LEDs 1 Captive screw 3 Status LED 2 Latch Table 7 on page 25 describes the behavior of the fan tray LEDs Table 7 Fan Tray LED Color State Description Green Blinking Fan tray hardware initialization is complete and software initialization is pending On steadily Fan tray software initialization is complete and the fan is functioning normally 25 ...

Page 35: ...e also located on the rear of the chassis Airflow Direction in the EX9253 Switch Chassis The switch has front to back AIR OUT airflow see Figure 12 on page 26 The air intake to cool the chassis is located on the front of the chassis Air is pulled through the chassis toward the fan tray where it is exhausted out through the rear of the chassis The air intake to cool the power supplies is also locat...

Page 36: ... 13 on page 28 and Figure 16 on page 32 The switch can support up to six power supplies installed at the rear panel of the chassis in slots labeled PSM0 through PSM5 CAUTION Do not mix AC and DC power supplies in the same chassis AC Power Supply Description Each AC power supply weighs approximately 3 4 lb 1 54 kg and consists of a handle an ejector lever an AC appliance inlet a fan and an LED to m...

Page 37: ...switches support 800 W and 1600 W AC power supply The AC power supply supports the low line 90 through 140 VAC and the high line 180 through 264 VAC AC power configurations Each AC power supply has a single AC appliance inlet located on the power supply that requires a dedicated AC power feed We recommend that you use a customer site circuit breaker rated for 15 A 100 VAC or 16 A 200 VAC circuit b...

Page 38: ... 8 NFPA 75 5 2 2 and 210 52 and Canadian Electrical Code CEC Section 4 010 3 The cords supplied with the switch are in compliance Table 8 on page 29 gives the AC power cord specifications for the countries and regions listed in the table Table 8 AC Power Cord Specifications Country Region Electrical Specifications Plug Standards Juniper Model Number Argentina 250 VAC 10 A 50 Hz IRAM 2073 Type RA 3...

Page 39: ...CEE 7 VII Type VIIGK CBL EX PWR C13 KR North America 125 VAC 13 A 60 Hz NEMA 5 15 Type N5 15 CBL EX PWR C13 US South Africa 250 VAC 10 A 50 Hz SABS 164 1 1992 Type ZA 13 CBL EX PWR C13 SA Switzerland 250 VAC 10 A 50 Hz SEV 6534 2 Type 12G CBL EX PWR C13 SZ Taiwan 125 VAC 11 A and 15 A 50 Hz NEMA 5 15P Type N5 15P CBL EX PWR C13 TW United Kingdom 250 VAC 10 A 50 Hz BS 1363 A Type BS89 13 CBL EX PWR...

Page 40: ...nput line frequency 50 through 60 Hz nominal AC system current rating 25 A AC system input power 2500 W Table 10 on page 31 lists the AC power supply electrical specifications Table 10 AC Power Supply Electrical Specifications Item Specification Maximum output power AC low line 800 W AC high line 1600 W AC input voltage Operating range 90 through 140 VAC 800 W 180 through 264 VAC 1600 W AC input l...

Page 41: ...ustomer site circuit breaker rated for 40 A 48 VDC minimum or as required by local code Figure 16 on page 32 shows the power supply and Figure 17 on page 32 shows the power supply components Figure 16 DC Power Supply Figure 17 DC Power Supply Components 1 Ejector lever 3 DC power terminals 2 Status LED 4 Handle Each power supply has its own fan and is cooled by its own internal cooling system EX92...

Page 42: ...he DC power system electrical specifications Table 11 DC Power System Electrical Specifications Item Specification DC input voltage Operating range 40 through 72 VDC DC system input current rating 54 A 48 VDC maximum DC system input power 2500 W Table 12 on page 33 lists the DC power supply electrical specifications Table 12 DC Power Supply Electrical Specifications Item Specification Maximum outp...

Page 43: ...irement at 55 C Watts Maximum EX9253 6Q12C line card 740 W 800 W EX9253 6Q12C M line card 770 W 835 W Routing Engine 58 W 65 W Fan tray 20 W 95 W Calculating System Thermal Output After you have calculated the power consumption for your configuration you can use that information to determine the system thermal output BTUs per hour Multiply the power consumption in watts by 3 41 to compute the syst...

Page 44: ...ove and replace them without powering off the switch or disrupting switch functions To maintain proper cooling you must install a replacement line card or a blank panel in the line card slot shortly after removing a line card from the chassis Line Card Models Table 14 on page 35 shows the model number description of the line card model and the Junos OS release in which the line card was first supp...

Page 45: ...c slot port port number 40g The ports are labeled 0 through 5 The ports support rate selectability and remote port identification 12 built in QSFP28 ports each of which can house a combination of QSFP28 transceivers QSFP transceivers or breakout cables These ports can operate at 40 Gbps and 100 Gbps speeds By default the ports operate with 4x10 Gbps interfaces and support breakout cables If you ne...

Page 46: ...lane status LEDs displays the status of each individual lane for the selected port The lane display is ON when the software cycles through ports for lane status display One port is selected at a time and the display mode for that particular port switches to lane display mode The other ports remain in normal display mode Port location The port location mode is ON when a remote operator initiates a ...

Page 47: ...status display then port LED state or color can be determined from the column titled Lane Display Table 15 Port LED State and Color Rules Pluggable Inserted Breakout Configuration State Explicitly Disabled Port State Normal Port Location ON Lane Display Yes No breakout No Up Green Blinking green Yes No breakout No Down loss of signal LOS detected Off Blinking green Yes No breakout No Down transcei...

Page 48: ...el not individual lane Red Blinking red Blinking red Yes Breakout Any In all other cases the port LED color is amber Amber Blinking amber Blinking amber The following factors trigger a change in the lane LED color A breakout port is selected for a lane display Port location mode is activated for a port on a given interface card Table 16 on page 39 describes the state and color rules for the lane L...

Page 49: ...s disabled in the CLI 5 Amber OK FAIL LED and ONLINE LED on EX9253 6Q12C Line Card Table 17 on page 40 describes the OK FAIL LED and the ONLINE LED on EX9253 6Q12C line card their colors and state and the status they indicate Table 17 OK FAIL LED and ONLINE LED on EX9253 6Q12C Line Card LED Color State and Description OK FAIL Green On steadily The line card is functioning normally and the link is ...

Page 50: ...out powering off the switch or disrupting switch functions To maintain proper cooling you must install a replacement line card or a blank panel in the line card slot shortly after removing a line card from the chassis Line Card Models Table 18 on page 41 shows the model number description of the line card model and the Junos OS release in which the line card was first supported Table 18 EX9253 6Q1...

Page 51: ...e a 40 Gbps interface on the port by using the command set chassis fpc fpc slot pic pic slot port port number 40g The ports are labeled 0 through 5 The ports support rate selectability and remote port identification 12 built in QSFP28 ports with MACsec capability each of which can house a combination of QSFP28 transceivers QSFP transceivers or breakout cables These ports can operate at 40 Gbps and...

Page 52: ...represents port state or a breakout port state By default the port status display mode is Normal Lane display An array of lane status LEDs displays the status of each individual lane for the selected port The lane display is ON when the software cycles through ports for lane status display One port is selected at a time and the display mode for that particular port switches to lane display mode Th...

Page 53: ...om the column titled Port Location ON If the breakout port is selected for the lane status display then port LED state or color can be determined from the column titled Lane Display Table 19 Port LED State and Color Rules Pluggable Inserted Breakout Configuration State Explicitly Disabled Port State Normal Port Location ON Lane Display Yes No breakout No Up Green Blinking green Yes No breakout No ...

Page 54: ...kout No Hardware failure transceiver initialization error at the port level not individual lane Red Blinking red Blinking red Yes Breakout Any In all other cases the port LED color is amber Amber Blinking amber Blinking amber The following factors trigger a change in the lane LED color A breakout port is selected for a lane display Port location mode is activated for a port on a given interface ca...

Page 55: ...kout Yes Breakout port is disabled in the CLI 5 Amber OK FAIL LED and ONLINE LED on EX9253 6Q12C M Line Card Table 21 on page 46 describes the OK FAIL LED and the ONLINE LED on EX9253 6Q12C M line card their colors and state and the status they indicate Table 21 OK FAIL LED and ONLINE LED on EX9253 6Q12C M Line Card LED Color State and Description OK FAIL Green On steadily The line card is functio...

Page 56: ...reparation and Specifications Site Preparation Checklist for an EX9253 Switch 48 EX9253 Site Guidelines and Requirements 50 EX9253 Network Cable and Transceiver Planning 57 EX9253 Management Cable Specifications and Pinouts 67 ...

Page 57: ...nvironmental Requirements and Specifications for an EX9253 Switch on page 50 Power Measure distance between external power sources and switch installation site Calculate the power consumption and requirements EX9253 Power System on page 27 Calculating the Fiber Optic Cable Power Budget for EX Series Devices Calculating the Fiber Optic Cable Power Margin for EX Series Devices Rack or Cabinet Select...

Page 58: ... the floor and building structure Rack and Cabinet Requirements for EX9253 Switches on page 54 Cables Plan the cable routing and management Acquire cables and connectors Determine the number of cables needed based on your planned configuration Ensure that the distance between hardware components to be connected allows for cable lengths to be within the specified maximum limits RELATED DOCUMENTATIO...

Page 59: ...tal guidelines are followed The site must be as dust free as possible because dust can clog air intake vents and filters reducing the efficiency of the switch cooling system Maintain ambient airflow for normal switch operation If the airflow is blocked or restricted or if the intake air is too warm the switch might overheat leading to the switch temperature monitor shutting down the switch to prot...

Page 60: ...t device operation requires proper site planning and maintenance and proper layout of the equipment rack or cabinet and wiring closet To plan and create an acceptable operating environment for your device and prevent environmentally caused equipment failures Keep the area around the chassis free from dust and conductive material such as metal flakes Follow prescribed airflow guidelines to ensure t...

Page 61: ...ccurs when wires exceed recommended distances or pass between buildings Electromagnetic pulses EMPs caused by lightning damage unshielded conductors and electronic devices Radio frequency interference To reduce or eliminate RFI from your site wiring do the following Use a twisted pair cable with a good distribution of grounding conductors If you must exceed the recommended distances use a high qua...

Page 62: ...front to back with respect to the rack The switch must not interfere with the cooling of other systems in the rack Fillers must be used as appropriate in the rack to ensure there is no recirculation of heated exhaust air back to the front of the rack Care must also be taken around cables to ensure that no leakage of air in situations where recirculation may result To accommodate power cable bend r...

Page 63: ...ch Chassis Rack and Cabinet Requirements for EX9253 Switches You can mount an EX9253 switch on four posts of a 19 in rack or in a cabinet that contains a 19 in rack Rack requirements consist of Rack type Mounting bracket hole spacing Rack size and strength Rack connection to the building structure Table 25 on page 55 provides the rack requirements and specifications 54 ...

Page 64: ... by the Electronic Components Industry Association http www ecianow org Ensure that the rack rails are spaced widely enough to accommodate the external dimensions of the device chassis The outer edges of the front mounting brackets extend the width of the chassis to 19 in 48 2 cm The rack must be strong enough to support the weight of the device Ensure that the spacing of rails and adjacent racks ...

Page 65: ...rmal output of the device or devices Ensure that the hot air exhaust of the chassis exits the cabinet without recirculating into the device An open cabinet without a top or doors that employs hot air exhaust extraction from the top ensures the best airflow through the chassis If the cabinet contains a top or doors perforations in these elements assist with removing the hot air exhaust Install the ...

Page 66: ...nly optical transceivers and optical connectors purchased from Juniper Networks with your Juniper Networks device CAUTION The Juniper Networks Technical Assistance Center JTAC provides complete support for Juniper supplied optical modules and cables However JTAC does not provide support for third party optical modules and cables that are not qualified or supplied by Juniper Networks If you face a ...

Page 67: ...ve a Transceiver Replacing a QSFP28 Transceiver on an SRX4600 Services Gateway Replacing a QSFP28 Transceiver on an SRX4600 Services Gateway EX9253 6Q12C Line Card 35 EX9253 6Q12C M Line Card 41 SFP Direct Attach Copper Cables for EX Series Switches IN THIS SECTION Cable Specifications 59 List of DAC Cables Supported on EX Series Switches 60 Standards Supported by These Cables 60 Small form factor...

Page 68: ...onsumption for example coherent ZR or ZR can potentially cause thermal damage to or reduce the lifespan of the host equipment Any damage to the host equipment due to the use of third party optical modules or cables is the users responsibility Juniper Networks will accept no liability for any damage caused due to such use Cable Specifications EX Series switches support SFP passive DAC cables The pa...

Page 69: ...re Compatibility Tool page for EX4400 EX4500 Hardware Compatibility Tool page for EX4500 EX4550 Hardware Compatibility Tool page for EX4550 EX4600 Hardware Compatibility Tool page for EX4600 EX8208 Hardware Compatibility Tool page for EX8208 EX8216 Hardware Compatibility Tool page for EX8216 EX9251 Hardware Compatibility Tool page for EX9251 EX9253 Hardware Compatibility Tool page for EX9253 Stand...

Page 70: ...e a problem running a Juniper device that uses third party optical modules or cables JTAC may help you diagnose host related issues if the observed issue is not in the opinion of JTAC related to the use of the third party optical modules or cables Your JTAC engineer will likely request that you check the third party optical module or cable and if required replace it with an equivalent Juniper qual...

Page 71: ...f these cables see EX3400 Hardware Compatibility Tool page for EX3400 EX4300 Hardware Compatibility Tool page for EX4300 EX4550 Hardware Compatibility Tool page for EX4550 EX4600 Hardware Compatibility Tool page for EX4600 EX9251 Hardware Compatibility Tool page for EX9251 EX9253 Hardware Compatibility Tool page for EX9253 Understanding EX Series Switches Fiber Optic Cable Signal Loss Attenuation ...

Page 72: ...light which travels in a straight line through the single mode fiber Compared to multimode fiber single mode fiber has a higher bandwidth and can carry signals for longer distances It is consequently more expensive Exceeding the maximum transmission distances can result in significant signal loss which causes unreliable transmission Attenuation and Dispersion in Fiber Optic Cable An optical data l...

Page 73: ...To ensure that fiber optic connections have sufficient power for correct operation calculate the link s power budget when planning fiber optic cable layout and distances to ensure that fiber optic connections have sufficient power for correct operation The power budget is the maximum amount of power the link can transmit When you calculate the power budget you use a worst case analysis to provide ...

Page 74: ...eater than zero indicates that the power budget is sufficient to operate the receiver and that it does not exceed the maximum receiver input power This means the link will work A PM that is zero or negative indicates insufficient power to operate the receiver See the specification for your receiver to find the maximum receiver input power To calculate the worst case estimate for the power margin P...

Page 75: ...dBm 2 km 0 5 dBm km 1 dBm Clock Recovery Module CRM 1 dBm 1 dBm NOTE For information about the actual amount of signal loss caused by equipment and other factors see your vendor documentation for that equipment 2 Calculate the PM by subtracting LL from PB PB LL PM 13 dBm 0 5 dBm HOL 5 0 5 dBm 2 0 5 dBm 2 km 1 0 dBm km 1 dB CRM PM 13 dBm 0 5 dBm 2 5 dBm 1 dBm 2 dBm 1 dBm PM PM 6 dBm The calculated ...

Page 76: ...ions for the cables that connect the console and management ports to management devices Table 28 Specifications of Cables to Connect to Management Devices Ports Cable Specifications Receptacle Additional Information RJ 45 Console port CAT5e UTP unshielded twisted pair cable RJ 45 Connect a Device to a Management Console Using an RJ 45 Connector Management Ethernet port Ethernet cable with an RJ 45...

Page 77: ...r desktop PC does not have a DB 9 plug connector pin and you want to connect your laptop or desktop PC directly to a device use a combination of the RJ 45 to DB 9 socket adapter and a USB to DB 9 plug adapter You must provide the USB to DB 9 plug adapter Table 29 Console Port Connector Pinout Information Pin Signal Description 1 RTS Output Request to send 2 DTR Output Data terminal ready 3 TxD Out...

Page 78: ...ng features USB 2 0 or later Formatted with a FAT or MS DOS file system If the switch is running Junos OS Release 9 5 or earlier the formatting method must use a primary boot record Microsoft Windows formatting by default does not use a primary boot record See the documentation for your USB flash drive for information about how your USB flash drive is formatted RJ 45 to DB 9 Serial Port Adapter Pi...

Page 79: ...RTS RJ 45 Management Port Connector Pinout Information Table 31 on page 70 provides the pinout information for the RJ 45 connector for the management port on Juniper Networks devices Table 31 RJ 45 Management Port Connector Pinout Information Pin Signal Description 1 TRP1 Transmit receive data pair 1 2 TRP1 Transmit receive data pair 1 3 TRP2 Transmit receive data pair 2 70 ...

Page 80: ...tor Pinout Information Continued Pin Signal Description 4 TRP3 Transmit receive data pair 3 5 TRP3 Transmit receive data pair 3 6 TRP2 Transmit receive data pair 2 7 TRP4 Transmit receive data pair 4 8 TRP4 Transmit receive data pair 4 71 ...

Page 81: ...lation and Configuration Unpacking and Mounting the EX9253 Switch 73 Connecting the EX9253 to Power 82 Connecting the EX9253 to External Devices 91 Connecting the EX9253 to the Network 99 Configuring Junos OS on the EX9253 103 ...

Page 82: ...aximally protected inside the shipping box Do not unpack it until you are ready to begin installation Ensure that you have the following parts and tools available A Phillips screwdrivers number 2 not provided Cover panels to cover any slots not occupied by a component To unpack the switch 1 Move the shipping carton to a staging area as close to the installation site as possible where you have enou...

Page 83: ...tomer service representative or contact Juniper customer care from within the U S or Canada by telephone at 1 888 314 5822 For international dial or direct dial options in countries without toll free numbers see https www juniper net support requesting support html NOTE All line cards ordered are shipped separately Line cards are not listed on the switch s packing list Table 32 on page 74 lists th...

Page 84: ...page 75 lists the parts contained in the accessory box The same accessories ship with both configurations of the switch Table 33 Accessory Box Parts List Part Quantity M5 Pan Head screws to secure the grounding lug 2 14 AWG ground terminal lug sized for 10 screw Panduit LCD10 14B L or equivalent 1 16 14 AWG ring lugs sized for 6 screws Panduit PN10 10R or equivalent to connect DC power source cabl...

Page 85: ...acking a Line Card Used in an EX9253 Switch Before you begin to unpack a line card Ensure that you have taken the necessary precautions to prevent electrostatic discharge ESD damage see Prevention of Electrostatic Discharge Damage Ensure that you know how to handle and store the line card see Handling and Storing Line Cards The line cards for EX9253 switches are rigid sheet metal structures that h...

Page 86: ...hanges to an existing installed product using the Juniper Networks website to activate your hardware replacement service level agreements SLAs CAUTION Register product serial numbers on the Juniper Networks website and update the installation base data if there is any addition or change to the installation base or if the installation base is moved Juniper Networks will not be held accountable for ...

Page 87: ... s management options by following the appropriate instructions Connect a Device to a Network for Out of Band Management Connect a Device to a Management Console Using an RJ 45 Connector SEE ALSO Rack and Cabinet Requirements for EX9253 Switches 54 Clearance Requirements for Airflow and Hardware Maintenance for an EX9253 Switch 53 Chassis and Component Lifting Guidelines 205 Mounting an EX9253 Swi...

Page 88: ...rsons such as riggers or movers to lift the switch Mounting an EX9253 switch requires one person to guide the switch in place and a second person to install the mounting screws to secure the switch to the rack if you are using material handling systems or two people to lift the switch and a third person to install the mounting screws to secure the switch to the rack if you are using specially trai...

Page 89: ...unting brackets on either side of the chassis are fixed to the chassis 3 Remove the screw on either side of the chassis that holds the rear mounting brackets by using a Phillips number 2 screwdriver and slide the brackets out of the chassis see Figure 23 on page 80 Save the brackets Figure 23 Removing the Rear Mounting Brackets 4 Position the cable management brackets on each side of the front of ...

Page 90: ...ws appropriate for your rack through the holes in the bracket and the threaded holes on the rack see Figure 25 on page 81 Tighten the screws Figure 25 Inserting the Screws Through the Front Mounting Brackets 7 On the rear of the chassis slide the rear mounting brackets on either side of the chassis until the rear mounting brackets contact the rack rails see Figure 26 on page 81 Figure 26 Sliding t...

Page 91: ...17 Rack Mounting and Cabinet Mounting Warnings 207 Connecting the EX9253 to Power IN THIS SECTION Connecting Earth Ground to an EX9253 Switch 82 Connecting AC Power to an EX9253 Switch and Powering on the Switch 85 Connecting DC Power to an EX9253 Switch and Powering on the Switch 87 Connecting Earth Ground to an EX9253 Switch Before you begin to connect earth ground ensure that you have the follo...

Page 92: ...nding terminal as the preferred method for grounding the chassis regardless of the power supply configuration However if additional grounding methods are available you can also use those methods For example you can use the grounding wire in the power cord of an AC power supply or use the grounding terminal or lug on a DC power supply This system was tested to meet or exceed all applicable EMC regu...

Page 93: ...igure 28 on page 84 Figure 28 Grounding Point on an EX9253 Switch 1 Grounding point 6 Secure the grounding lug on the grounding cable to the protective earthing terminal on the switch by using the screws see Figure 29 on page 84 Figure 29 Connecting a Grounding Cable to an EX9253 Switch 84 ...

Page 94: ...on of Electrostatic Discharge Damage Depending on the model you can use either AC or DC power supplies The power supplies are hot removable and hot insertable field replaceable units installed in the rear panel of the switch You can replace them without powering off the switch or disrupting switch functions CAUTION Do not mix AC and DC power supplies in the same switch NOTE An AC powered switch ge...

Page 95: ...ower source outlet 7 Dress the power cord appropriately Ensure that it does not touch the switch components block the air exhaust and access to switch components or drape where people could trip on it NOTE After powering off a power supply wait at least 60 seconds before turning it back on After powering on a power supply wait at least 60 seconds before turning it off If the system is completely p...

Page 96: ...ave the following parts and tools available Two DC power source cables minimum 10 AWG 1 3 mm minimum 60 C wire or as permitted by local code not provided Two 16 14 AWG ring lugs sized for 6 screws Panduit PN10 10R or equivalent provided A torque controlled socket nut driver with a maximum torque capacity of 6 lb in 0 68 Nm for tightening the screws on the terminals on each power supply not provide...

Page 97: ...rated for at least 125 percent of the continuous current that the system draws at 48 VDC Before you connect power to the switch wrap and fasten one end of the ESD wrist strap around your bare wrist and connect the other end of the strap to the ESD point on the switch To connect power to a DC powered switch for each power supply 1 Switch off the dedicated customer site circuit breakers Ensure that ...

Page 98: ... is 6 lb in 0 68 Nm The terminal screws might be damaged if excessive torque is applied Use only a torque controlled driver to tighten screws on the DC power supply terminals Use an appropriately sized driver with a maximum torque capacity of 6 lb in 0 68 Nm or less Ensure that the driver is undamaged and properly calibrated and that you have been trained in its use You may want to use a driver th...

Page 99: ...back on After powering on a power supply wait at least 60 seconds before turning it off If the system is completely powered off when you power on the power supply the Routing Engine boots as the power supply completes its startup sequence If the Routing Engine finishes booting and you need to power off the system again first issue the CLI request system halt command After a power supply is powered...

Page 100: ...as booted properly Connecting the EX9253 to External Devices IN THIS SECTION Connect a Device to a Network for Out of Band Management 91 Connect a Device to a Management Console Using an RJ 45 Connector 92 Connecting the EX9253 Switch to External Clocking and Timing Devices 94 Configuring Clock Synchronization Interface on EX9251 and EX9253 Switches 95 Connect a Device to a Network for Out of Band...

Page 101: ... end of the Ethernet cable to the management port on the device 2 Connect the other end of the Ethernet cable to the management device Figure 33 Connect a Device to a Network for Out of Band Management Connect a Device to a Management Console Using an RJ 45 Connector Ensure that you have an Ethernet cable that has an RJ 45 connector at either end One such cable and an RJ 45 to DB 9 serial port ada...

Page 102: ...able with an RJ 45 connector Use the console port to connect the device to the console server or management console The console port accepts a cable that has an RJ 45 connector To connect the device to a management console see Figure 35 on page 93 and Figure 36 on page 93 1 Connect one end of the Ethernet cable to the console port labeled CON CONSOLE or CON1 on the device 2 Connect the other end o...

Page 103: ...s 1 Time of day ToD port with LED Support for this port is not available in this release 3 10 MHz input and output timing ports 2 BITS ports with LEDs 4 1 PPS input and output timing ports Connecting 1 PPS and 10 MHz Timing Devices to the Switch The switch has four SubMiniature B SMB connectors that support 1 PPS and 10 MHz timing devices see Figure 37 on page 94 NOTE Ensure that a cable of 3 m or...

Page 104: ...LEDs for the BITS port are lit steadily green 5 Configure the port Configuring Clock Synchronization Interface on EX9251 and EX9253 Switches IN THIS SECTION Configuring Clock Synchronization Options 95 Starting with Junos OS Release 18 1R1 EX9251 switches support external clock synchronization for Synchronous Ethernet T1 or E1 line timing sources and external inputs Starting with Junos OS Release ...

Page 105: ...after a change in configuration restart which is the wait time from 60 seconds through 180 seconds after reboot of the switch and switchover which is the switchover wait time from 30 seconds through 60 seconds after clock recovery edit chassis synchronization user host set hold interval configuration change secs user host set hold interval restart secs user host set hold interval switchover secs 5...

Page 106: ... edit chassis synchronization source interfaces external hierarchy level or the edit chassis synchronization source interfaces ethernet interface name hierarchy level edit chassis synchronization user host edit source interfaces external OR edit chassis synchronization user host edit source interfaces ethernet interface name b Configure the external clock interface and the Ethernet interface with ...

Page 107: ...ces external user host set e1 options framing g704 g704 no crc user host set e1 options line encoding ami hdb3 d For BITS interface configure options for the t1 signal type the framing statement as esf or sf and the line encoding statement as ami or b8zs edit chassis synchronization interfaces external user host set t1 options framing esf sf user host set t1 options line encoding ami b8zs 11 Confi...

Page 108: ...sable RELATED DOCUMENTATION Centralized Clocking Overview Example Configuring Synchronous Ethernet on MX Series Routers request chassis synchronization mode show chassis synchronization MX Series Routers synchronization Understanding Clock Synchronization Connecting the EX9253 to the Network IN THIS SECTION Install a Transceiver 99 Connect a Fiber Optic Cable 102 Install a Transceiver Before you i...

Page 109: ...party optical modules or cables Your JTAC engineer will likely request that you check the third party optical module or cable and if required replace it with an equivalent Juniper qualified component Use of third party optical modules with high power consumption for example coherent ZR or ZR can potentially cause thermal damage to or reduce the lifespan of the host equipment Any damage to the host...

Page 110: ...is fully seated If you are installing a CFP transceiver tighten the captive screws on the transceiver by using your fingers 7 Remove the rubber safety cap from the transceiver and the end of the cable and insert the cable into the transceiver LASER WARNING Do not look directly into a fiber optic transceiver or into the ends of fiber optic cables Fiber optic transceivers and fiber optic cable conne...

Page 111: ...e Before you connect a fiber optic cable to an optical transceiver installed in a device ensure that you have taken the necessary precautions for safe handling of lasers see Laser and LED Safety Guidelines and Warnings To connect a fiber optic cable to an optical transceiver installed in a device LASER WARNING Do not look directly into a fiber optic transceiver or into the ends of fiber optic cabl...

Page 112: ... bend radius An arc smaller than a few inches in diameter can damage the cables and cause problems that are difficult to diagnose Do not let fiber optic cables hang free from the connector Do not allow fastened loops of cables to dangle which stresses the cables at the fastening point Configuring Junos OS on the EX9253 IN THIS SECTION EX9253 Switch Default Configuration 103 Connecting and Configur...

Page 113: ...uthorization info file interactive commands interactive commands any Connecting and Configuring an EX9253 Switch Before you begin to connect and configure the switch gather the following information Name the switch will use on the network Domain name the switch will use IP address and prefix length information for the Ethernet interface IP address of a default switch IP address of a DNS server Pas...

Page 114: ...re the switch by issuing Junos OS command line interface CLI commands either on a console device attached to the console CON port on the front panel or over a telnet connection to a network connected to the Ethernet management MGMT port on the front panel This procedure connects the switch to the network but does not enable it to forward traffic For complete information about enabling the switch t...

Page 115: ...ess of a Domain Name System DNS server edit root set system name server address 9 Set the root authentication password by entering either a plain text password an encrypted password or an SSH public key string DSA or RSA edit root set system root authentication plain text password New password password Retype new password password or edit root set system root authentication encrypted password encr...

Page 116: ...e subnet next hop destination IP retain no readvertise 11 Configure the Telnet service edit root set system services telnet 12 Optional Display the configuration to verify that it is correct edit root show system host name host name domain name domain name backup router address root authentication authentication method password public key name server address interfaces fxp0 unit 0 family inet addr...

Page 117: ...s a copy of Junos OS is not installed in the switch except when you want to install Junos OS from the storage media If the storage media is installed during normal operation and if the switch is rebooted intentionally or accidentally for example as a result of a power outage the configuration in the switch is deleted and the copy of the software in the storage media is installed in the switch 108 ...

Page 118: ...rocedures for EX9253 Switches 110 Maintaining the EX9253 Cooling System 110 Maintaining the EX9253 Power System 122 Maintaining the EX9253 Routing Engine 132 Maintaining the EX9253 Line Cards 136 Maintaining Transceivers 145 Maintain Fiber Optic Cables 155 ...

Page 119: ... dust Make sure that airflow is unobstructed around the switch and into the air intake vents Check the status reporting devices on the switch alarms and LEDs Inspect the air filter and fan tray replacing the air filter every 6 months for optimum cooling system performance Do not run the switch for more than a few minutes without the air filter or fan trays in place Maintaining the EX9253 Cooling S...

Page 120: ...n ESD wrist strap A Phillips screwdriver number 2 not provided A replacement fan tray The fan trays are hot removable and hot insertable field replaceable units installed in the rear panel of the switch You can replace them without powering off the switch or disrupting switch functions CAUTION You must replace the fan tray within two minutes of removing the fan tray to prevent the chassis from ove...

Page 121: ...tray completely out of the chassis Figure 40 Removing a Fan Tray SEE ALSO EX9253 Cooling System 21 Installing a Fan Tray in an EX9253 Switch Before you begin to install a fan tray Ensure you understand how to prevent electrostatic discharge ESD damage ee Prevention of Electrostatic Discharge Damage Ensure that you have the following parts and tools available An ESD wrist strap A Phillips screwdriv...

Page 122: ...ch 2 Grasp the fan tray and place one hand under the fan tray for support 3 Place the fan tray on the respective slot and carefully push the fan tray into the chassis until the socket lock snaps into place and holds it 4 Tighten the screw on the fan tray faceplate using the Phillips screwdriver number 2 to secure the fan tray in the chassis Figure 41 Installing a Fan Tray NOTE If you have a Junipe...

Page 123: ...urement Temp CB 0 Exhaust Temp Sensor OK 41 degrees C 105 degrees F CB 0 Inlet Temp Sensor OK 37 degrees C 98 degrees F CB 0 CPU DIE Temp Sensor OK 54 degrees C 129 degrees F FPC 0 Intake Temp Sensor OK 44 degrees C 111 degrees F FPC 0 Exhaust A Temp Sensor OK 51 degrees C 123 degrees F FPC 0 Exhaust B Temp Sensor OK 47 degrees C 116 degrees F FPC 0 EA0 Chip OK 68 degrees C 154 degrees F FPC 0 EA0...

Page 124: ...F FPC 0 EA2_HMC1 DRAM botm OK 78 degrees C 172 degrees F FPC 0 EA2_HMC2 Logic die OK 79 degrees C 174 degrees F FPC 0 EA2_HMC2 DRAM botm OK 76 degrees C 168 degrees F Power PEM 0 Absent PEM 1 Absent PEM 2 OK 49 degrees C 120 degrees F PEM 3 OK 48 degrees C 118 degrees F PEM 4 Absent PEM 5 Absent Fans Fan Tray 0 Fan 0 OK Spinning at normal speed Fan Tray 0 Fan 1 OK Spinning at normal speed Fan Tray...

Page 125: ...irty air filter restricts airflow in the unit producing a negative effect on the ventilation of the chassis CAUTION Do not operate the switch for more than two minutes without the air filter unit installed on it Because the fans are very powerful they could pull small bits of wire or other materials into the switch chassis through the unfiltered air intake This could damage the switch and its comp...

Page 126: ...s Before installing the air filter unit ensure that the cable management brackets are installed on front of the switch The air filter unit consists of three parts the outer filter cover the air filter and the inner cage The air filter sits between the outer cover and the inner cage The air filter unit is installed into the cable management brackets and are held tightly by captive screws Regularly ...

Page 127: ...d A replacement air filter WARNING Ensure that you understand how to prevent ESD damage see Prevention of Electrostatic Discharge Damage The air filter unit consists of three parts the outer filter cover the air filter and the inner cage The air filter sits between the outer cover and the inner cage The air filter unit is installed into the cable management brackets and are held tightly by captive...

Page 128: ...e cable management brackets on the front of the switch NOTE It is not necessary to remove the cables from the cable management brackets to access the air filter unit or the air filter 3 Grasp the head of the loosened screws and pull the screws to remove the outer cover of the air filter unit The air filter is installed at the center of the air filter unit behind the outer cover see Figure 44 on pa...

Page 129: ...held tightly by captive screws Regularly inspect the air filter A dirty air filter restricts airflow in the unit producing a negative effect on the ventilation of the chassis To install the air filter 1 Wrap and fasten one end of an ESD wrist strap around your bare wrist and connect the other end of the strap to the ESD point on the switch 2 Loosen the captive screws located on either side of the ...

Page 130: ... Outer cover 3 Inner cage 2 Air filter 4 Grasp the air filter and place the air filter straight in front of the inner cage 5 Place the outer cover back in its place 6 Tighten the captive screws to secure the air filter unit Maintaining the Air Filter in EX9253 Switches IN THIS SECTION Purpose 121 Action 122 Purpose For optimum cooling verify the condition of the air filters 121 ...

Page 131: ...ters in a dark cool and dry place Wrap the air filters separately using plastic wraps and store them in an environment with RH between 40 to 80 and temperature between 40 F to 90 F Storing air filters at higher temperatures or where they can be exposed to ultraviolet UV radiation hydrocarbon emissions or vapors from solvents can significantly reduce their life If an air filter develops flakes or b...

Page 132: ...ing an RJ 45 Connector 2 Take the line cards offline by issuing the following CLI command on the external management device connected to the switch user switch request chassis fpc slot slot number offline 3 Power off the backup RE by issuing the following CLI command on the primary RE user switch request vmhost power off other routing engine 4 Power off the primary RE by issuing the following CLI ...

Page 133: ...SM5 on the rear of the chassis CAUTION Before you remove a power supply ensure that you have power supplies sufficient to power the switch that remains in the chassis see EX9253 Power System on page 27 CAUTION Do not leave the power supply slot empty for a long time while the switch is operational Either replace the power supply unit promptly or install a cover panel over the empty slot NOTE After...

Page 134: ...e Ensure that you have the following parts and tools available An ESD wrist strap A Phillips screwdriver number 2 not provided The AC power supply in an EX9253 switch is a hot insertable and hot removable field replaceable unit FRU You can remove and replace it while the switch is running without turning off power to the switch or disrupting switching functions You can install up to six power supp...

Page 135: ...ng care not to touch power supply components pins leads or solder connections remove the power supply from its bag by using the handle 4 Using both hands hold and slide the AC power supply straight into the chassis until the power supply is fully seated in the power supply slot The power supply faceplate must align with the power supply faceplate or the cover panel installed in the adjacent power ...

Page 136: ... hot insertable field replaceable unit FRU You can remove and replace it while the switch is running without turning off power to the switch or disrupting switching functions To ensure proper operation of the switch you must install a replacement power supply shortly after removing a power supply from the chassis The power supplies are installed in the slots labeled PSM0 through PSM5 on the rear o...

Page 137: ...es might become active during the removal process 3 Verify that the input status LED on the power supply is not lit 4 Wrap and fasten one end of the ESD wrist strap around your bare wrist and connect the other end of the strap to the ESD point on the switch 5 Move the DC circuit breaker on the DC power supply faceplate to the off position 6 Remove the clear plastic cover protecting the terminal st...

Page 138: ... no chance that the cable leads might become active during installation Ensure that you have the following parts and tools available An ESD wrist strap A Phillips screwdriver number 2 not provided The DC power supply in an EX9253 switch is a hot removable and hot insertable field replaceable unit FRU You can remove and replace it while the switch is running without turning off power to the switch ...

Page 139: ...not to touch power supply components pins leads or solder connections remove the power supply from its bag 4 Move the DC circuit breaker on the power supply faceplate to the off position 5 Using both hands hold and slide the DC power supply straight into the chassis until the power supply is fully seated in the power supply slot The power supply faceplate must align with the power supply faceplate...

Page 140: ... environment pem command The output for EX9253 switches is similar to the following user switch show chassis environment pem Make sure that the power and grounding cables are arranged so that they do not obstruct access to other switch components Routinely check the status LEDs on the power supply faceplate to determine whether the power supplies are functioning normally Check the alarm LED on the...

Page 141: ...Routing Engine RE in an EX9253 switch is a hot removable and hot insertable field replaceable unit FRU You can remove and replace it while the switch is running without turning off power to the switch or disrupting switching functions if RE graceful switchover is configured in the CLI The REs are installed on the front panel At least one RE must be installed in the switch To ensure proper operatio...

Page 142: ...urface 3 Wrap and fasten one end of the ESD wrist strap around your bare wrist and connect the other end of the strap to the ESD point on the switch 4 Open the ejector handle on the RE outward to unseat the RE 5 Grasp the ejector handle and slide the RE about halfway out of the chassis Figure 51 Removing an RE 6 Place one hand underneath the RE to support it and slide it completely out of the chas...

Page 143: ...of the ESD wrist strap around your bare wrist and connect the other end of the strap to the ESD point on the switch 2 Taking care not to touch RE components remove the RE from its bag 3 Lift the RE and position it in the chassis with the faceplate facing you and the sides of the RE aligned with the guides in the RE slot on the switch chassis see Figure 52 on page 136 4 Slide the RE into the chassi...

Page 144: ...rcent Interrupt 0 percent Idle 99 percent 15 min CPU utilization User 0 percent Background 0 percent Kernel 0 percent Interrupt 0 percent Idle 99 percent Model EX9253 RE Start time 2018 04 29 20 19 29 PDT Uptime 56 days 10 hours 22 minutes 39 seconds Last reboot reason 0x2000 hypervisor reboot Load averages 1 minute 5 minute 15 minute 0 08 0 14 0 15 0 08 0 14 0 15 Routing Engine status Slot 1 Curr...

Page 145: ...ys 4 hours 15 minutes 34 seconds Last reboot reason 0x2000 hypervisor reboot Load averages 1 minute 5 minute 15 minute 0 03 0 05 0 07 Figure 52 Installing an RE Maintaining the EX9253 Line Cards IN THIS SECTION Handling and Storing Line Cards 137 Maintaining Line Card Cables 140 Removing a Line Card from an EX9253 Switch 140 Installing a Line Card in an EX9253 Switch 143 136 ...

Page 146: ...s as specified in these procedures can cause irreparable damage to them Holding a Line Card You must hold a line card horizontally when installing it in the chassis You may hold a line card vertically or horizontally when carrying it CAUTION Be prepared to support the full weight as you slide the line card into the chassis To hold a line card vertically 1 Orient the line card so that the faceplate...

Page 147: ...d against your body as you carry it CAUTION Take care not to hit the line card against any object as you carry it Line card components are fragile Never hold or grasp the line card anywhere except the places mentioned in these procedures In particular never grasp the connector edge See Figure 1 Figure 53 Do Not Grasp the Connector Edge Never carry the line card while holding the faceplate with onl...

Page 148: ... one another or on top of any other component Place each line card separately in an antistatic bag or on an antistatic mat placed on a flat stable surface Storing a Line Card You must store a line card in the chassis or in a spare shipping container horizontally and sheet metal side down Do not stack line cards on top of one another or on top of any other component Place each line card separately ...

Page 149: ...Maintaining Line Card Cables Components in the line cards are fragile To extend the lives of your line card cables and to avoid problems that can result from cable damage follow these procedures To maintain line card cables Place excess cable out of the way Do not allow fastened loops of cable to dangle from the connector Placing fasteners on the loops helps retain their shape Keep the cable conne...

Page 150: ...the line card slot shortly after removing a line card from the chassis To remove a line card from an EX9253 switch see Figure 55 on page 142 1 Place the antistatic bag or antistatic mat on a flat stable surface 2 Wrap and fasten one end of the ESD wrist strap around your bare wrist and connect the other end of the strap to the ESD point on the switch 3 Label the cables connected to each port on th...

Page 151: ... not to touch line card components pins leads or solder connections gently slide the line card completely out of the chassis and place it in an antistatic bag or on its own antistatic mat placed on a flat stable surface CAUTION After the OK FAIL LED is unlit wait at least 30 seconds before inserting the line card removing a line card from a different slot or inserting a line card in another slot 8...

Page 152: ...up to 18 35 lb 8 3 kg Be prepared to support the full weight EX9253 switches have field replaceable unit FRU line cards that can be installed in the line card slots on the front of the switch chassis The line cards are hot insertable and hot removable You can remove and replace them without powering off the switch or disrupting switch functions However we recommend that you take them offline befor...

Page 153: ...he guides in the line card slot on the switch chassis 7 Make sure the handles stay in the open position and gently slide the line card fully into the slot using both hands 8 Rotate both the ejector handles clockwise simultaneously to seat the line card 9 Use one of the following methods to bring the line card online Press and hold the OFFLINE button on the line card by using a narrow ended tool th...

Page 154: ...how chassis fpc pic status commands 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 support tools updateinstallbase Failure to do so can result in significant delays if you need replacement parts This note does not apply if you replace existing components with the same type of component Maintaining...

Page 155: ...s NOTE After you remove a transceiver or when you change the media type configuration wait for 6 seconds for the interface to display the operational commands Figure 57 on page 148 shows how to remove a QSFP transceiver The procedure is the same for all types of transceivers except the QSFP28 and CFP transceivers To remove a transceiver from a device 1 Place the antistatic bag or antistatic mat on...

Page 156: ...to prevent it from dislodging or developing stress points Secure the cable so that it does not support its own weight as it hangs to the floor Place excess cable out of the way in a neatly coiled loop in the cable management system Placing fasteners on the loop helps to maintain its shape CAUTION Do not bend the fiber optic cable beyond its minimum bend radius An arc smaller than a few inches in d...

Page 157: ...ver do not touch the connector pins at the end of the transceiver 7 By using your fingers grasp the body of the transceiver and pull it straight out of the port 8 Place the transceiver in the antistatic bag or on the antistatic mat placed on a flat stable surface 9 Place the dust cover over the empty port or install the replacement transceiver Install a Transceiver Before you install a transceiver...

Page 158: ...party optical modules or cables Your JTAC engineer will likely request that you check the third party optical module or cable and if required replace it with an equivalent Juniper qualified component Use of third party optical modules with high power consumption for example coherent ZR or ZR can potentially cause thermal damage to or reduce the lifespan of the host equipment Any damage to the host...

Page 159: ...is fully seated If you are installing a CFP transceiver tighten the captive screws on the transceiver by using your fingers 7 Remove the rubber safety cap from the transceiver and the end of the cable and insert the cable into the transceiver LASER WARNING Do not look directly into a fiber optic transceiver or into the ends of fiber optic cables Fiber optic transceivers and fiber optic cable conne...

Page 160: ...Before you remove a transceiver from a device ensure that you have taken the necessary precautions for safe handling of lasers see Laser and LED Safety Guidelines and Warnings Ensure that you have the following parts and tools available An antistatic bag or an antistatic mat Rubber safety caps to cover the transceiver and fiber optic cable connector A dust cover to cover the port or a replacement ...

Page 161: ... the ESD point on the switch 3 Label the cable connected to the QSFP28 transceiver so that you can later reconnect it to the correct QSFP28 transceiver 4 Disconnect the cable from the transceiver Immediately cover the transceiver and the end of the cable with a rubber safety cap CAUTION Do not leave a fiber optic transceiver uncovered except when inserting or removing a cable The safety cap keeps ...

Page 162: ...ransceiver in a device ensure that you have taken the necessary precautions for safe handling of lasers see Laser and LED Safety Guidelines and Warnings Ensure that you have a rubber safety cap available to cover the transceiver The transceivers for Juniper Networks devices are hot removable and hot insertable field replaceable units FRUs You can remove and replace them without powering off the de...

Page 163: ...an potentially cause thermal damage to or reduce the lifespan of the host equipment Any damage to the host equipment due to the use of third party optical modules or cables is the users responsibility Juniper Networks will accept no liability for any damage caused due to such use To install a QSFP28 transceiver see Figure 60 on page 154 1 Wrap and fasten one end of the ESD wrist strap around your ...

Page 164: ...stress points Secure the cable so that it does not support its own weight as it hangs to the floor Place excess cable out of the way in a neatly coiled loop in the cable management system Placing fasteners on the loop helps to maintain its shape CAUTION Do not let fiber optic cable hang free from the connector Do not allow fastened loops of cable to dangle which stresses the cable at the fastening...

Page 165: ...cap Save the cap 2 Remove the rubber safety cap from the optical transceiver Save the cap 3 Insert the cable connector into the optical transceiver see Figure 61 on page 156 Figure 61 Connect a Fiber Optic Cable to an Optical Transceiver Installed in a Device g000704 Transceiver Fiber optic cable 4 Secure the cables so that they do not support their own weight Place excess cable out of the way in ...

Page 166: ...the following command edit interfaces user device set interface name disable LASER WARNING Do not look directly into a fiber optic transceiver or into the ends of fiber optic cables Fiber optic transceivers and fiber optic cables connected to transceivers emit laser light that can damage your eyes 2 Carefully unplug the fiber optic cable connector from the transceiver 3 Cover the transceiver with ...

Page 167: ...which are 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 and less expensive to replace than the instruments Keep fiber optic cable connections clean Microdeposits of oil and dust in the canal of the transceiver or cable connector can cause loss of lig...

Page 168: ...5 CHAPTER Troubleshooting Hardware Troubleshooting EX9253 Components 160 ...

Page 169: ...h 163 Troubleshoot Temperature Alarms in EX Series Switches 165 Understand Alarm Types and Severity Levels on EX Series Switches 171 Chassis Component Alarm Conditions on EX9253 Switches 172 Monitor System Log Messages 179 Troubleshooting the Cooling System in an EX9253 Switch IN THIS SECTION Problem 160 Cause 160 Solution 161 Problem Description The fans in the fan tray are not functioning normal...

Page 170: ...fail you must replace the entire fan tray Place your hand near the exhaust vents at the side of the chassis to determine whether the fans are pushing air out of the chassis If a fan tray is removed both a minor alarm and a major alarm occur The following conditions automatically cause the fans to run at full speed and also trigger the indicated alarm A fan fails major alarm The switch temperature ...

Page 171: ...r alarm condition occurs issue the show chassis alarms command to determine the source of the problem If all power supplies have failed the system temperature might have exceeded the threshold causing the system to shut down NOTE If the system temperature exceeds the threshold Junos OS shuts down all power supplies so that no status is displayed Junos OS also can shut down one of the power supplie...

Page 172: ...CTION Problem 163 Solution 163 Problem Description Line card is not functioning normally Solution The Routing Engine downloads the line card software to it under two conditions the line card is present when the Routing Engine boots Junos OS and the line card is installed and requested online through the CLI or the button on the front panel The line card then runs diagnostics When the line card is ...

Page 173: ... 20 22 23 3136 12 11 1 Empty NOTE The show chassis fpc command displays the status of the line cards For more detailed output add the detail option The following example does not specify a slot number which is optional user switch show chassis fpc detail Slot 0 information State Online Total CPU DRAM 3136 MB Total RLDRAM 771 MB Total DDR DRAM 18432 MB Temperature 52 degrees C 125 degrees F Start t...

Page 174: ...ironment and the show chassis temperature thresholds commands to identify the condition that triggered the alarm CAUTION To prevent the switch from overheating do not operate it in an area that exceeds the maximum recommended ambient temperature To prevent airflow restriction allow at least 6 inches 15 2 cm of clearance around the ventilation openings 1 Connect to the switch by using Telnet and is...

Page 175: ...B 1 Exhaust B Absent CB 1 ACBC Absent CB 1 XF A Absent CB 1 XF B Absent FPC 3 Intake OK 48 degrees C 118 degrees F FPC 3 Exhaust A OK 46 degrees C 114 degrees F FPC 3 Exhaust B OK 51 degrees C 123 degrees F FPC 3 XL TSen OK 67 degrees C 152 degrees F FPC 3 XL Chip OK 58 degrees C 136 degrees F FPC 3 XL_XR0 TSen OK 67 degrees C 152 degrees F FPC 3 XL_XR0 Chip OK 51 degrees C 123 degrees F FPC 3 XL_...

Page 176: ...ning at intermediate speed Top Front Fan OK Spinning at intermediate speed Bottom Front Fan OK Spinning at intermediate speed Table 34 on page 167 lists the output fields for the show chassis environment command Output fields are listed in the approximate order in which they appear Table 34 show chassis environment Output Fields Field Name Field Description Class Information about the category or ...

Page 177: ... the command show chassis temperature thresholds This command displays the chassis temperature threshold settings Following is a sample output on an EX9208 switch The output is similar on other EX Series switches show chassis temperature thresholds EX9208 Switch user host show chassis temperature thresholds Fan speed Yellow alarm Red alarm Fire Shutdown degrees C degrees C degrees C degrees C Item...

Page 178: ... alarm Normal The temperature threshold that must be exceeded on the component to trigger a yellow o amber alarm when the fans are running at full speed Bad fan The temperature threshold that must be exceeded on the component to trigger a yellow o amber alarm when one or more fans have failed or are missing Red alarm Temperature threshold in degrees Celsius that trigger a red alarm Normal The temp...

Page 179: ... the switch to generate a temperature alarm and the respective remedies Table 36 Causes and Remedies for Temperature Alarms Cause Remedy Ambient temperature is above threshold temperature Ensure that the ambient temperature is within the threshold temperature limit See Environmental Requirements and Specifications for EX Series Switches Fan module or fan tray has failed Check the fan Replace the f...

Page 180: ... If the Alarm LED is yellow or amber this indicates a minor alarm If the Alarm LED is unlit there is no alarm or the switch is halted chassis alarm Preset alarm triggered by a physical condition on the switch such as a power supply failure excessive component temperature or media failure system alarm Preset alarm triggered by a missing rescue configuration or failure to install a license for a lic...

Page 181: ... yellow or amber Indicates a noncritical condition on the switch that if left unchecked might cause an interruption in service or degradation in performance A yellow or amber alarm condition requires monitoring or maintenance A missing rescue configuration generates a yellow or amber system alarm SEE ALSO Dashboard for EX Series Switches Chassis Component Alarm Conditions on EX9253 Switches IN THI...

Page 182: ...ck the line card Remove and reinstall the line card If this fails replace the failed card A line card has failed Major red Replace the failed line card A line card has been removed Major red Install a line card in the empty slot Fan trays A fan tray has been removed from the chassis Major red Install the missing fan tray One fan in the chassis is not spinning or is spinning below required speed Ma...

Page 183: ...ies Inadequate number of power supplies Major red Install an additional power supply Routing Engine Excessive framing errors on console port An excessive framing error alarm is triggered when the default framing error threshold of 20 errors per second on a serial port is exceeded A faulty serial console port cable might be connected to the device Minor yellow Replace the serial cable connected to ...

Page 184: ...red Replace the failed Routing Engine The Ethernet management interface fxp0 or em0 on the Routing Engine is down Major red Check the interface cable connection Reboot the system If the alarm recurs open a support case using the Case Manager link at https www juniper net support or call 1 888 314 5822 toll free US Canada or 1 408 745 9500 from outside the United States var partition usage is high ...

Page 185: ...utput of show chassis temperature thresholds command Minor yellow Check room temperature Check air filter and replace it if required Check airflow Replace the fan tray The temperature has exceeded the defined threshold for the Normal condition listed in the output of show chassis temperature thresholds command Minor yellow Check room temperature Check air filter and replace it if required Check ai...

Page 186: ...tps www juniper net support or call 1 888 314 5822 toll free US Canada or 1 408 745 9500 from outside the United States Backup Routing Engine Alarms For switches with primary and backup Routing Engines a primary Routing Engine can generate alarms for events that occur on a backup Routing Engine Table 39 on page 178 lists chassis alarms generated for events that occur on a backup Routing Engine NOT...

Page 187: ... is missing in boot list on the backup Routing Engine Major red Replace the failed backup Routing Engine Ethernet The Ethernet management interface fxp0 or em0 on the backup Routing Engine is down Minor yellow Check the interface cable connection Reboot the system If the alarm recurs open a support case using the Case Manager link at https www juniper net support or call 1 888 314 5822 toll free U...

Page 188: ...ecurs open a support case using the Case Manager link at https www juniper net support or call 1 888 314 5822 toll free US Canada or 1 408 745 9500 from outside the United States SEE ALSO Field Replaceable Units in an EX9253 Switch 13 Monitor System Log Messages IN THIS SECTION Purpose 179 Action 180 Meaning 183 Purpose NOTE This topic applies only to the J Web Application package Use the monitori...

Page 189: ... Lists the names of all the system log files that you configure By default a log file messages is included in the var log directory To specify events recorded in a particular file select the system log filename from the list for example messages Select Include archived files to include archived files in the search Process Specifies the name of the process generating the events you want to display ...

Page 190: ... the ID and completes the remainder automatically An event ID also known as a system log message code uniquely identifies a system log message It begins with a prefix that indicates the generating software process or library To specify events with a specific ID type the partial or complete ID for example TFTPD_AF_ERR Description Specifies text from the description of events that you want to displa...

Page 191: ...tton is enabled after the event log messages start loading in the Events Detail table After the log messages are completely loaded in the Events Detail table Generate Raw Report changes to Generate Report Generates a list of event log messages in nontabular format To generate a raw report 1 Click Generate Raw Report The Opening filteredEvents html window appears 2 Select Open with to open the HTML...

Page 192: ...og messages in tabular format which shows system details events filter criteria and event details To generate a formatted report 1 Click Generate Report The Opening Report html window appears 2 Select Open with to open the HTML file or select Save File to save the file 3 Click OK Meaning Table 41 on page 184 describes the Event Summary fields NOTE By default the View Events page in the J Web inter...

Page 193: ...s that are not errors but are of interest or might warrant special handling Warning Yellow or Amber Indicates conditions that warrant monitoring Error Blue Indicates standard error conditions that generally have less serious consequences than errors in the emergency alert and critical levels Critical Pink Indicates critical conditions such as hard drive errors Alert Orange Indicates conditions tha...

Page 194: ...n event can belong to one of the following type categories Error Indicates an error or failure condition that might require corrective action Event Indicates a condition or occurrence that does not generally require corrective action Event Description Displays a more detailed explanation of the message Time Displays the time at which the message was logged SEE ALSO Check Active Alarms with the J W...

Page 195: ...14 1X53 Starting in Junos OS Release 14 1X53 a Formatted Report can be generated from event log messages being loaded in an Events Detail table 186 ...

Page 196: ...6 CHAPTER Contacting Customer Support and Returning the Chassis or Components Returning an EX9253 Chassis or Components 188 ...

Page 197: ...to return one or more components determine the serial number for each component For instructions see Locating the Serial Number on an EX9253 Switch or Component on page 189 2 Obtain an RMA number from JTAC as described in Contact Customer Support to Obtain Return Material Authorization NOTE Do not return any component to Juniper Networks unless you have first obtained an RMA number Juniper Network...

Page 198: ... obtain Return Materials Authorization RMA See Contact Customer Support to Obtain Return Material Authorization If the switch is operational and you can access the command line interface CLI you can list serial numbers for the switch and for some components with a CLI command If you do not have access to the CLI or if the serial number for the component does not appear in the command output you ca...

Page 199: ...els on FRU Components Field replaceable units FRUs are components that you can replace at your site The FRUs in EX9253 switches are hot removable and hot insertable You can remove and replace them without powering off the switch For each of these FRUs you must remove the FRU from the switch chassis to see the FRU s serial number ID label The FRUs in EX9253 switches are Routing Engine Power supplie...

Page 200: ...see Figure 63 on page 191 Figure 63 Location of the Serial Number ID Label on a Fan Tray AC power supply The serial number ID label is on the top of the AC power supply see Figure 64 on page 191 Figure 64 Location of the Serial Number ID Label on an AC Power Supply 191 ...

Page 201: ...DC power supply see Figure 65 on page 192 Figure 65 Location of the Serial Number ID Label on a DC Power Supply Line card The serial number ID label is on the connector end see Figure 66 on page 192 Figure 66 Location of the Serial Number ID Label on a Line Card 192 ...

Page 202: ...iver Replacing a QSFP28 Transceiver on an SRX4600 Services Gateway Contact Customer Support to Obtain Return Material Authorization If you are returning a device or hardware component to Juniper Networks for repair or replacement obtain a Return Material Authorization RMA number from Juniper Networks Technical Assistance Center JTAC After locating the serial number of the device or hardware compon...

Page 203: ...uniper net support If you are contacting JTAC by telephone enter your 12 digit service request number followed by the pound key for an existing case or press the star key to be routed to the next available support engineer The support representative validates your request and issues an RMA number for return of the component Packing an EX9253 Switch or Component IN THIS SECTION Packing an EX9253 Sw...

Page 204: ... contact your Juniper Networks representative about approved packaging materials 2 On the console or other management device connected to the switch enter CLI operational mode and issue the following command to shut down the switch software user switch request system halt Wait until a message appears on the console confirming that the operating system has halted For more information about the comm...

Page 205: ...ng box To pack EX9253 switch components Place individual components in antistatic bags Use the original packing materials if they are available If the original packing materials are not available ensure the component is adequately packed to prevent damage during transit The packing material you use must be able to support the weight of the component Ensure that the components are adequately protec...

Page 206: ...Warning 205 Ramp Warning 207 Rack Mounting and Cabinet Mounting Warnings 207 Grounded Equipment Warning 211 Radiation from Open Port Apertures Warning 212 Laser and LED Safety Guidelines and Warnings 213 Maintenance and Operational Safety Guidelines and Warnings 216 General Electrical Safety Guidelines and Warnings 222 Action to Take After an Electrical Accident 223 Prevention of Electrostatic Dis...

Page 207: ...nce Warning 230 DC Power Wiring Terminations Warning 232 Multiple Power Supplies Disconnection Warning 233 TN Power Warning 234 Agency Approvals for EX9253 Switches 235 Compliance Statements for EMC Requirements for EX Series Switches 237 Compliance Statements for Acoustic Noise for EX Series Switches 242 ...

Page 208: ...ard to people or make the equipment unsafe Never attempt to lift an object that is too heavy for one person to handle Never install or manipulate wiring during electrical storms Never install electrical jacks in wet locations unless the jacks are specifically designed for wet environments Operate the device only when it is properly grounded Follow the instructions in this guide to properly ground ...

Page 209: ...e CAUTION You need to observe the specified guidelines to prevent minor injury or discomfort to you or severe damage to the device Attention Veillez à respecter les consignes indiquées pour éviter toute incommodité ou blessure légère voire des dégâts graves pour l appareil LASER WARNING This symbol alerts you to the risk of personal injury from a laser Avertissement Ce symbole signale un risque de...

Page 210: ...tuazione potrebbe causare infortuni alle persone Prima di lavorare su qualsiasi apparecchiatura occorre conoscere i pericoli relativi ai circuiti elettrici ed essere al corrente delle pratiche standard per la prevenzione di incidenti Advarsel Dette varselsymbolet betyr fare Du befinner deg i en situasjon som kan føre til personskade Før du utfører arbeid på utstyr må du vare oppmerksom på de farem...

Page 211: ...rato e qualificato deve essere autorizzato ad installare o sostituire questo apparecchio Advarsel Kun kvalifisert personell med riktig opplæring bør montere eller bytte ut dette utstyret Aviso Este equipamento deverá ser instalado ou substituído apenas por pessoal devidamente treinado e qualificado Atención Estos equipos deben ser instalados y reemplazados exclusivamente por personal técnico adecu...

Page 212: ...l and operate your equipment Fire Suppression In the event of an electrical hazard or an electrical fire you should first turn power off to the equipment at the source Then use a Type C fire extinguisher which uses noncorrosive fire retardants to extinguish the fire Fire Suppression Equipment Type C fire extinguishers which use noncorrosive fire retardants such as carbon dioxide and Halotron are m...

Page 213: ...ARNING Read the installation instructions before you connect the device to a power source Waarschuwing Raadpleeg de installatie aanwijzingen voordat u het systeem met de voeding verbindt Varoitus Lue asennusohjeet ennen järjestelmän yhdistämistä virtalähteeseen Avertissement Avant de brancher le système sur la source d alimentation consulter les directives d installation Warnung Lesen Sie die Inst...

Page 214: ...e used When this is not practical specially trained persons or systems must be used riggers or movers Restricted Access Warning WARNING This unit is intended for installation in restricted access areas A restricted access area is an area to which access can be gained only by service personnel through the use of a special tool lock and key or other means of security and which is controlled by the a...

Page 215: ...dall autorità responsabile della zona Advarsel Denne enheten er laget for installasjon i områder med begrenset adgang Et område med begrenset adgang gir kun adgang til servicepersonale som bruker et spesielt verktøy lås og nøkkel eller en annen sikkerhetsanordning og det kontrolleres av den autoriteten som er ansvarlig for området Aviso Esta unidade foi concebida para instalação em áreas de acesso...

Page 216: ...a rampa inclinada más de 10 grados Varning Använd inte ramp med en lutning på mer än 10 grader Rack Mounting and Cabinet Mounting Warnings Ensure that the rack or cabinet in which the device is installed is evenly and securely supported Uneven mechanical loading could lead to a hazardous condition WARNING To prevent bodily injury when mounting or servicing the device in a rack take the following p...

Page 217: ...tel in het rek monteert of het daar een servicebeurt geeft Varoitus Kun laite asetetaan telineeseen tai huolletaan sen ollessa telineessä on noudatettava erityisiä varotoimia järjestelmän vakavuuden säilyttämiseksi jotta vältytään loukkaantumiselta Noudata seuraavia turvallisuusohjeita Juniper Networks switch on asennettava telineeseen joka on kiinnitetty rakennukseen Jos telineessä ei ole muita l...

Page 218: ...ell ist das Gestell von unten nach oben zu laden wobei das schwerste Bauteil unten im Gestell anzubringen ist Wird das Gestell mit Stabilisierungszubehör geliefert sind zuerst die Stabilisatoren zu installieren bevor Sie die Einheit im Gestell anbringen oder sie warten Avvertenza Per evitare infortuni fisici durante il montaggio o la manutenzione di questa unità in un supporto occorre osservare sp...

Page 219: ...eciais para se certificar de que o sistema possui um suporte estável As seguintes directrizes ajudá lo ão a efectuar o seu trabalho com segurança O Juniper Networks switch deverá ser instalado numa prateleira fixa à estrutura do edificio Esta unidade deverá ser montada na parte inferior da estante caso seja esta a única unidade a ser montada Ao montar esta unidade numa estante parcialmente ocupada...

Page 220: ...ällningen Om denna enhet installeras på en delvis fylld ställning skall ställningen fyllas nedifrån och upp med de tyngsta enheterna längst ned på ställningen Om ställningen är försedd med stabiliseringsdon skall dessa monteras fast innan enheten installeras eller underhålls på ställningen Grounded Equipment Warning WARNING This device must be properly grounded at all times Follow the instructions...

Page 221: ...LASER WARNING Because invisible radiation might be emitted from the aperture of the port when no fiber cable is connected avoid exposure to radiation and do not stare into open apertures Waarschuwing Aangezien onzichtbare straling vanuit de opening van de poort kan komen als er geen fiberkabel aangesloten is dient blootstelling aan straling en het kijken in open openingen vermeden te worden Varoit...

Page 222: ...oberto Atención Debido a que la apertura del puerto puede emitir radiación invisible cuando no existe un cable de fibra conectado evite mirar directamente a las aperturas para no exponerse a la radiación Varning Osynlig strålning kan avges från en portöppning utan ansluten fiberkabel och du bör därför undvika att bli utsatt för strålning genom att inte stirra in i oskyddade öppningar Laser and LED...

Page 223: ... laser could permanently damage the eye Avertissement Les connecteurs à fibre optique sans terminaison peuvent émettre un rayonnement laser invisible Le cristallin de l œil humain faisant converger toute la puissance du laser sur la rétine toute focalisation directe de l œil sur une source laser même de faible puissance peut entraîner des lésions oculaires irréversibles Class 1 Laser Product Warni...

Page 224: ...NG 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 Avertissement Ne pas fixer le faisceau des yeux ni l observer directement à l aide d instruments optiques Warnung Nicht direkt in den Strahl bl...

Page 225: ...tning Activity Warning 219 Operating Temperature Warning 220 Product Disposal Warning 221 While performing the maintenance activities for devices observe the following guidelines and warnings Battery Handling Warning WARNING Replacing a battery incorrectly might result in an explosion Replace a battery only with the same or equivalent type recommended by the manufacturer Dispose of used batteries ...

Page 226: ...ner Avvertenza Pericolo di esplosione se la batteria non è installata correttamente Sostituire solo con una di tipo uguale o equivalente consigliata dal produttore Eliminare le batterie usate secondo le istruzioni del produttore Aviso Existe perigo de explosão se a bateria for substituída incorrectamente Substitua a bateria por uma bateria igual ou de um tipo equivalente recomendado pelo fabricant...

Page 227: ...Erde angeschlossen werden und können schwere Verbrennungen verursachen oder an die Anschlußklemmen angeschweißt werden Avvertenza Prima di intervenire su apparecchiature collegate alle linee di alimentazione togliersi qualsiasi monile inclusi anelli collane braccialetti ed orologi Gli oggetti metallici si riscaldano quando sono collegati tra punti di alimentazione e massa possono causare ustioni g...

Page 228: ...ssa äläkä yhdistä tai irrota kaapeleita ukkosilmalla Avertissement Ne pas travailler sur le système ni brancher ou débrancher les câbles pendant un orage Warnung Arbeiten Sie nicht am System und schließen Sie keine Kabel an bzw trennen Sie keine ab wenn es gewittert Avvertenza Non lavorare sul sistema o collegare oppure scollegare i cavi durante un temporale con fulmini Advarsel Utfør aldri arbeid...

Page 229: ...ot d air constant dégagez un espace d au moins 15 2 cm autour des ouvertures de ventilations Warnung Um einen Router der switch vor Überhitzung zu schützen darf dieser nicht in einer Gegend betrieben werden in der die Umgebungstemperatur das empfohlene Maximum von 40 C überschreitet Um Lüftungsverschluß zu verhindern achten Sie darauf daß mindestens 15 2 cm lichter Raum um die Lüftungsöffnungen he...

Page 230: ...t volgens alle landelijke wetten en voorschriften te worden afgedankt Varoitus Tämän tuotteen lopullisesta hävittämisestä tulee huolehtia kaikkia valtakunnallisia lakeja ja säännöksiä noudattaen Avertissement La mise au rebut définitive de ce produit doit être effectuée conformément à toutes les lois et réglementations en vigueur Warnung Dieses Produkt muß den geltenden Gesetzen und Vorschriften e...

Page 231: ...s pour intérieur ne doivent pas être raccordés physiquement aux interfaces prévues pour la connexion à l installation extérieure ou à son câblage Les ports pour intérieur de l appareil sont réservés au raccordement de câbles pour intérieur ou non exposés uniquement L ajout de protections ne constitue pas une précaution suffisante pour raccorder physiquement ces interfaces au câblage de l installat...

Page 232: ...or possible hazards in your work area such as moist floors ungrounded power extension cords and missing safety grounds Operate the device within marked electrical ratings and product usage instructions To ensure that the device and peripheral equipment function safely and correctly use the cables and connectors specified for the attached peripheral equipment and make certain they are in good condi...

Page 233: ...ts antistatic bag see Figure 68 on page 225 in one hand and touch the exposed bare metal of the device with the other hand immediately 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 Avertissement Par mesure de sécurité vérifiez régulièrement la résistance du...

Page 234: ...To dissipate this charge always ground the cables to a suitable and safe earth ground before connecting them to the system Attention Les câbles ANSI TIA EIA 568 par exemple Cat 5e et Cat 6 peuvent emmagasiner des charges électrostatiques Pour évacuer ces charges reliez toujours les câbles à une prise de terre adaptée avant de les raccorder au système AC Power Electrical Safety Guidelines The follo...

Page 235: ...r the AC powered device and be easily accessible For devices that have more than one power supply connection you must ensure that all power connections are fully disconnected so that power to the device is completely removed to prevent electric shock To disconnect power unplug all power cords one for each power supply Power Cable Warning Japanese WARNING The attached power cable is only for this p...

Page 236: ...s equipos de corriente alterna CA Varning Innan du arbetar med ett chassi eller nära strömförsörjningsenheter skall du för växelströmsenheter dra ur nätsladden DC Power Electrical Safety Guidelines A DC powered device is equipped with a DC terminal block that is rated for the power requirements of a maximally configured device For permanently connected equipment a readily accessible disconnect dev...

Page 237: ... circuit breaker on the panel board that services the DC circuit switch the circuit breaker to the OFF position and tape the device handle of the circuit breaker in the OFF position Waarschuwing Voordat u een van de onderstaande procedures uitvoert dient u te controleren of de stroom naar het gelijkstroom circuit uitgeschakeld is Om u ervan te verzekeren dat alle stroom UIT is geschakeld kiest u o...

Page 238: ...om betjener likestrømkretsen slå strømbryteren AV og teipe bryterhåndtaket på strømbryteren i AV stilling Aviso Antes de executar um dos seguintes procedimentos certifique se que desligou a fonte de alimentação de energia do circuito de corrente contínua Para se assegurar que toda a corrente foi DESLIGADA localize o disjuntor no painel que serve o circuito de corrente contínua e coloque o na posiç...

Page 239: ...tissement Lors de l installation de l appareil la mise à la terre doit toujours être connectée en premier et déconnectée en dernier 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 Advarsel Når enheten instal...

Page 240: ...nzuschliessen Die richtige Anschlusssequenz ist Erdanschluss zu Erdanschluss RTN zu RTN und dann 48V zu 48V Die richtige Sequenz zum Abtrennen der Stromversorgung ist 48V zu 48V RTN zu RTN und dann Erdanschluss zu Erdanschluss Es ist zu beachten dass der Erdanschluss immer zuerst angeschlossen und als letztes abgetrennt wird Avvertenza Mostra la morsettiera dell alimentatore CC Cablare l alimentat...

Page 241: ... is van goedgekeurde aansluitingspunten zoals het gesloten lus type of het grijperschop type waarbij de aansluitpunten omhoog wijzen Deze aansluitpunten dienen de juiste maat voor de draden te hebben en dienen zowel de isolatie als de geleider vast te klemmen Varoitus Jos säikeellinen johdin on tarpeen käytä hyväksyttyä johdinliitäntää esimerkiksi suljettua silmukkaa tai kourumaista liitäntää joss...

Page 242: ...ión Cuando se necesite hilo trenzado utilizar terminales para cables homologados tales como las de tipo bucle cerrado o espada con las lengüetas de conexión vueltas hacia arriba Estos terminales deberán ser del tamaño apropiado para los cables que se utilicen y tendrán que sujetar tanto el aislante como el conductor Varning När flertrådiga ledningar krävs måste godkända ledningskontakter användas ...

Page 243: ...ação de energia deverão ser desconectadas todas as conexões existentes Atención Esta unidad tiene más de una conexión de suministros de alimentación para eliminar la alimentación por completo deben desconectarse completamente todas las conexiones Varning Denna enhet har mer än en strömförsörjningsanslutning alla anslutningar måste vara helt avlägsnade innan strömtillförseln till enheten är fullstä...

Page 244: ...nformation Technology Equipment Safety EN 60950 1 2006 A2 2013 Information Technology Equipment Safety DIEC 60950 1 2005 A2 2013 Information Technology Equipment Safety All country deviations CB Scheme DEN 60825 1 Safety of Laser Products Part 1 Equipment classification and requirements EMC EN 300 386 V1 6 1 2012 09 Electromagnetic compatibility and Radio spectrum Matters ERM Telecommunication net...

Page 245: ...India EMC standard EN 55024 2010 CISPR 24 2010 Information technology equipment Immunity characteristics Limits and methods of measurement IEC EN 61000 Immunity Test EN 61000 3 2 2014 Power Line Harmonics EN 61000 3 3 A1 A2 A3 2013 Power Line Voltage Fluctuations The switch is designed to comply with the following standards GR 1089 Core Issue 6 May 2011 EMC and Electrical Safety for Network Teleco...

Page 246: ... 003 Cet appareil numérique de la classe A est conforme à la norme NMB 003 du Canada The Industry Canada label identifies certified equipment This certification means that the equipment meets certain telecommunications network protective operational and safety requirements Industry Canada does not guarantee the equipment will operate to the users satisfaction Before installing this equipment users...

Page 247: ...priate inspection authority or an electrician as appropriate Users should ensure for their own protection that the electrical ground connections of the power utility telephone lines and internal metallic water pipe system if present are connected together This precaution might be particularly important in rural areas Taiwan 此為甲類資訊技術設備 於一般家居環境使用時 本設備可能導致射頻干擾 用戶請採取相應措施 The preceding translates as fo...

Page 248: ...ct may cause radio interference and in such a situation the user may be required to take adequate measures Japan The preceding translates as follows This is a Class A device In a domestic environment this device might cause radio interference in which case the user needs to take adequate measures VCCI A Korea 239 ...

Page 249: ... Part 15 Statement This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruct...

Page 250: ...40F and EX4600 40F S All EX6200 switches NOTE For the EX6200 48P line cards the intrabuilding ports must use shielded intrabuilding cabling or wiring that is grounded at both ends All EX8200 switches EX9251 EX9253 These switches meet the following NEBS compliance standards SR 3580 NEBS Criteria Levels Level 4 Compliance GR 1089 CORE EMC and Electrical Safety for Network Telecommunications Equipmen...

Page 251: ...for EX Series Switches This topic applies to hardware devices in the EX Series product family which includes EX Series switches the EX Series Redundant Power System RPS and the XRE200 External Routing Engine Maschinenlärminformations Verordnung 3 GPSGV der höchste Schalldruckpegel beträgt 70 dB A oder weniger gemäss EN ISO 7779 Translation The emitted sound pressure is below 70 dB A per EN ISO 777...

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