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C H A P T E R

6

Replace the Power Supply

Before you begin this task, ensure that you have read and understood the safety warnings in the

section of the

Safety Warnings

handout topic.

The Cisco ASR-920-20SZ-M Router power supplies are hot-swappable. If you have installed redundant power
supplies, you can replace a single power supply without interrupting power to the router.

Note

To avoid erroneous failure messages, allow at least 2 minutes for the system to reinitialize after a power supply
has been removed or replaced.

Caution

You can replace the AC or the DC power supply.

•

Remove the DC Power Supply, on page 59

•

Remove the AC Power Supply, on page 61

Remove the DC Power Supply

This equipment is suitable for installation in Network Telecommunications Facilities and locations where the
NEC applies. The equipment is suitable for installation as part of the Common Bonding Network (CBN).

Note

The grounding architecture of this product is DC-isolated (DC-I) for DC-powered products. DC-powered
products have a nominal operating DC voltage of 48 VDC. Minimal steady state DC operating voltage is 19.2
VDC.

Caution

Cisco ASR-920-20SZ-M Aggregation Services Router Hardware Installation Guide

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Содержание ASR-920-20SZ-M

Страница 1: ...n Services Router Hardware Installation Guide First Published 2018 09 10 Americas Headquarters Cisco Systems Inc 170 West Tasman Drive San Jose CA 95134 1706 USA http www cisco com Tel 408 526 4000 800 553 NETS 6387 Fax 408 527 0883 ...

Страница 2: ... 2018 Cisco Systems Inc All rights reserved ...

Страница 3: ... Guidelines for DC Powered Systems 7 Guidelines for AC Powered Systems 7 Prevent Power Loss 7 Preventing ESD Damage 7 Overview 9 C H A P T E R 2 Features 9 GigabitEthernet Copper Ports 10 GE SFP Ports 11 SFP Ports 11 External Interfaces 11 Network Interfaces 11 Network Timing Interfaces 11 External Alarm Inputs 12 Console 12 Auxiliary Console 12 USB Console 12 USB Memory 12 Online Insertion and Re...

Страница 4: ...s 19 Site Cabling Guidelines 19 Asynchronous Terminal Connections 19 Interference Considerations 19 Rack Mounting Guidelines 20 Precautions for Rack Mounting 20 Rack Selection Guidelines 20 Receive the Device 21 Unpack and Verify Shipped Contents 23 Tools and Equipment 24 Install the Router 25 C H A P T E R 4 Rack Compatibility 25 Rack Types 25 Set up Device on Rack or Wall 27 Rack Mount 27 Instal...

Страница 5: ...nsole Port Using Mac OS X 46 Connecting to the Console Port Using Linux 46 Installing the Cisco USB Device Driver 47 Uninstalling the Cisco USB Device Driver 47 Connecting a USB Flash Device 48 Removing a USB Flash Device 48 Connecting Timing Cables 49 Connecting a Cable to the BITS Interface 49 Connecting Cables to the GPS Interface 49 Connect to EIA Console Port 50 Connect a Management Ethernet ...

Страница 6: ...oubleshooting Aids 65 C H A P T E R 7 Verify Pinout 65 BITS Port Pinouts 65 GPS Port Pinouts 66 Time of Day Port Pinouts 66 Alarm Port Pinouts 67 Management Ethernet Port Pinouts 67 USB Console Port Pinouts 68 USB MEM Port Pinouts 68 Check Optical Fiber Specifications 69 Check Alarm Conditions 69 Check LED Indicators 69 PWR and STAT LEDs 70 CPU Management Port LEDs 70 SFP LEDs 71 SFP LEDs 71 RJ 45...

Страница 7: ... bodily injury when mounting or servicing this unit in a rack you must take special precautions to ensure that the system remains stable The following guidelines are provided to ensure your safety This unit should be mounted at the bottom of the rack if it is the only unit in the rack When mounting this unit in a partially filled rack load the rack from the bottom to the top with the heaviest comp...

Страница 8: ... class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures Statement 340 Warning This equipment is in compliance with the essential requirements and other relevant provisions of Directive 1999 5 EC Statement 287 Warning Suitable for mounting on and over a concrete or other non combustible surface only Statem...

Страница 9: ...t stare into beams or view directly with optical instruments Statement 1051 Warning Safety with Electricity Before working on a chassis or working near power supplies unplug the power cord on AC units disconnect the power at the circuit breaker on DC units Statement 12 Warning Before working on equipment that is connected to power lines remove jewelry including rings necklaces and watches Metal ob...

Страница 10: ...oid electric shock do not connect safety extra low voltage SELV circuits to telephone network voltage TNV circuits LAN ports contain SELV circuits and WAN ports contain TNV circuits Some LAN and WAN ports both use RJ45 connectors Use caution when connecting cables Statement 1021 Warning A readily accessible two poled disconnect device must be incorporated in the fixed wiring Statement 1022 Warning...

Страница 11: ...ction authority or an electrician if you are uncertain that suitable grounding is available Statement 1024 Warning Installation of the equipment must comply with local and national electrical codes Statement 1074 Warning Hazardous voltage or energy may be present on power terminals Always replace cover when terminals are not in service Be sure uninsulated conductors are not accessible when cover i...

Страница 12: ... jacks in wet locations unless the jack is designed to handle such locations Never install telephone wiring during a lightning storm Power Supply Considerations Check the power at your site to ensure that you are receiving clean power free of spikes and noise If necessary install a power conditioner Power Connection Guidelines This section provides guidelines for connecting the device power suppli...

Страница 13: ...to the receptacles should connect to protective earth ground at the service equipment Prevent Power Loss Use the following guidelines to prevent power loss to the router To prevent loss of input power ensure that the total maximum load on each circuit supplying the power supplies is within the current ratings of the wiring and breakers In some systems you can use an UPS to protect against power fa...

Страница 14: ...or captive installation screws if any to release the bus connectors from the backplane or midplane Handle components by their handles or edges only do not touch the printed circuit boards or connectors Place a removed component board side up on an antistatic surface or in a static shielding container If you plan to return the component to the factory immediately place it in a static shielding cont...

Страница 15: ...page 9 GigabitEthernet Copper Ports on page 10 GE SFP Ports on page 11 SFP Ports on page 11 External Interfaces on page 11 Power Supply and Fans on page 13 Licensing on page 14 Features The Cisco ASR 920 Series Router family includes Cisco ASR 920 ASR 920 20SZ M This sub family with 1 RU form factor has fixed ENET interfaces four 10GE and twenty four 1GE and redundant modular power supplies AC DC ...

Страница 16: ... RJ 45 connectors These ports support the following features Standard 10 100 1000Base T TX operation with forced or auto negotiation for speed and duplex Automatic crossover auto MDIX for straight through and crossover connections Pause flow control as defined by the 802 3x standard Frame size of 9216 bytes Synchronous ENET operation that provides its recovered receive clock as an input clock sour...

Страница 17: ...ring as specified by the optical transceiver module Any mix of SFPs is supported unless specifically noted Pause flow control as defined by the 802 3x standard Frame size of 9216 bytes External Interfaces The Cisco ASR 920 20SZ M Router has these external physical interfaces on the front panel Network Interfaces The network interfaces are provided through fixed ports GE SFP ports supports 100 1000...

Страница 18: ... or minor Console The RS232 console port provides transmission Tx reception Rx and ground Gnd Auxiliary Console The Auxiliary Console port provides transmission Tx reception Rx and ground Gnd USB Console A single USB 2 0 Type A receptacle on the front panel of the router provides console access to ROMMON Cisco IOS XR and diagnostics While it uses the Type A connector it operates as a USB periphera...

Страница 19: ... Load is shared between PSUs when both the PSUs are inserted and powered up Status LED provided on both AC and DC PSU indicates the status and output condition DC PSU can be switched on or off using a switch on the front panel of the DC PSU Note This product requires surge protection as part of the building installation To comply with the Telcordia GR 1089 NEBS standard for electromagnetic compati...

Страница 20: ...lowing methods are used to activate the above licenses Cisco Software Licensing The Cisco Software License Activation feature is a set of processes and components to activate Cisco software feature sets by obtaining and validating fee based Cisco software licenses Licenses generated by the Cisco Software Licensing are tied to the UDI of the chassis and a corresponding watchtower device certificate...

Страница 21: ... shock by shorting out interior components Position system cables and power supply cable carefully Route system cables and the power supply cable and plug so that they are not stepped on or tripped over Be sure that nothing else rests on your system component cables or power cable Do not modify power cables or plugs Consult a licensed electrician or your power company for site modifications Always...

Страница 22: ...tal monitoring of the chassis protects the system and components from damage due to excessive voltage and temperature conditions To ensure normal operation and avoid unnecessary maintenance plan and prepare your site configuration before installation After installation ensure that the environmental characteristics continue to be met For an outside plant installation cell site cabinet hut and so on...

Страница 23: ... the flow of cooling air through the equipment rack and the devices that occupy it thus increasing the risk of an over temperature condition Enclosed racks must have adequate ventilation Because each device generates heat ensure that the racks are not congested An enclosed rack must have louvered sides and a fan to provide cool air Heat that is generated by the equipment near the bottom of the rac...

Страница 24: ...rce Otherwise it results in total power failure to the system due to a fault in the external wiring or a tripped circuit breaker To prevent loss of input power ensure that the maximum load on each circuit is within the current ratings of the wiring and the breakers Check the power at your site before installation and periodically after installation to ensure that you are receiving clean power If n...

Страница 25: ...s depend in part on the following factors Signal type Signal speed Transmission medium The distance and rate limits that are referenced in the following sections are the IEEE recommended maximum speeds and distances for signaling purposes Use this information as a guideline when planning your network connections before installing the chassis If wires exceed the recommended distances or if wires pa...

Страница 26: ...t Interference If signal wires exceed the recommended cabling distances or if signal wires pass between buildings you may encounter a lightning strike on the chassis The electromagnetic pulse EMP generated by lightning or other high energy phenomena can couple enough energy into unshielded conductors and damage or destroy electronic equipment For such problems you must consult with RFI and EMI exp...

Страница 27: ...ds Institute ETSI hole patterns in the mounting rails The required mounting hardware is shipped with the chassis If the rack on which you plan to install the chassis has metric threaded rails you must provide your own metric mounting hardware Perforated top and open bottom for ventilation to prevent overheating Leveling feet for stability Do not install the device on an enclosed rack because the c...

Страница 28: ...Label Description Label Packing carton 4 Outside carton for accessories 1 Accessories tray 5 Assembly packaging material 2 Router 3 Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 22 Prepare for Installation Receive the Device ...

Страница 29: ...l ESD wrist strap disposable Cisco ASR 920 Series Router Pointer Card Documentation Check the container for the following optional equipment Power cord if an AC power supply is shipped Lugs if a DC power supply is shipped If you do not specify the type of power cable US power cable for the AC device variant is supplied Note Optional equipment Most Cisco documentation is available online The chassi...

Страница 30: ...guration Ethernet hub switch or PC with a network interface card for connecting to the Ethernet ports Console terminal that is configured for 9600 baud 8 data bits no parity no flow control and 1 stop bit Console cable for connecting to the console port Ratcheting torque screwdriver with a Phillips head that exerts up to 30 pound force per square inch 0 02 kilograms force per square millimeter kgf...

Страница 31: ...olves these tasks Rack Compatibility on page 25 Set up Device on Rack or Wall on page 27 Ground the Device on page 36 Connect Power Cables on page 37 Connect Gigabit Ethernet Ports on page 41 Connect Chassis to Network on page 44 Rack Compatibility We recommend that you follow these rack specifications Rack Types Figure 3 Rack specification EIA 19 inches and 23 inches Cisco ASR 920 20SZ M Aggregat...

Страница 32: ...Opening X Rack Type Post Type 482 6mm 19 465mm 18 312 450 8mm 17 75 19 inches 48 3 centimeters 4 Post 2 Post 584 2mm 23 566 7mm 22 312 552 45mm 21 75 23 inches 58 4 centimeters 4 Post 2 Post Figure 4 Four Post Rack Type Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 26 Install the Router Rack Types ...

Страница 33: ...ack Install Rack Brackets The device is shipped with rack mounting brackets that are to be secured on the sides of the device Procedure Step 1 Remove the rack mounting brackets from the accessory kit and position them beside the device You can install the brackets at any of the 3 positions that are shown in the figure Note Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guid...

Страница 34: ...r for a 19 inch EIA Rack Front Position Figure 7 Attaching Mounting Brackets to Router for a 19 inch EIA Rack Middle Position Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 28 Install the Router Install Rack Brackets ...

Страница 35: ...er for a 19 inch EIA Rack Rear Position Figure 9 Attaching Mounting Brackets to Router for a 23 inch EIA Rack Front Position Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 29 Install the Router Install Rack Brackets ...

Страница 36: ...er for a 23 inch EIA Rack Middle Position Figure 11 Attaching Mounting Brackets to Router for a 23 inch EIA Rack Rear Position Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 30 Install the Router Install Rack Brackets ...

Страница 37: ...o Router for a ETSI Rack Front Position Figure 13 Attaching Mounting Brackets to Router for a ETSI Rack Middle Position Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 31 Install the Router Install Rack Brackets ...

Страница 38: ... Device on Rack Ensure adequate clearance when mounting the device on a rack Note Install cable guides before installing the device in a 19 inches 48 3 centimeters EIA rack Note Procedure Step 1 Position the device on the rack and use the images as a guide to set up the device Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 32 Install the Router Set up Device on Rack ...

Страница 39: ... using 19 inch brackets you must assemble the cable guides before installing the chassis on the rack Note Procedure Step 1 Position the cable A920 CBL GUIDE left and right against the front of the chassis and align the two screw holes as shown in the figure Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 33 Install the Router Attaching the Cable Guides ...

Страница 40: ... the chassis before you mount the chassis on the wall Install Wall Brackets The device is shipped with wall mounting brackets that are to be secured on the sides of the device Procedure Step 1 Remove the wall mounting brackets from the accessory kit and position them beside the device You can install the brackets as shown in the figure Note Cisco ASR 920 20SZ M Aggregation Services Router Hardware...

Страница 41: ...uide against the front of the device and align the four screw holes as shown in the figure Step 2 Use a tape measure and level to verify that the device is installed straight and on level Step 3 Secure the cable guides with four M6x12mm screws that are supplied with the cable kit The recommended maximum torque is 26 inch pounds 3 newton meters Cisco ASR 920 20SZ M Aggregation Services Router Hardw...

Страница 42: ...ead and understood the safety warnings in the Preventing ESD Damage section of the Safety Warnings handout topic Before you connect the power or turn on the power to the device you must provide an adequate device ground earth connection to your device This section describes how to ground the device The grounding lug location is on the back panel of the device Cisco ASR 920 20SZ M Aggregation Servi...

Страница 43: ...open end of the 2 hole ground lug over the exposed area of the ground wire Step 3 Using a crimping tool the one specified by the ground lug manufacturer crimp the ground lug to the ground wire Step 4 Use a Phillips head screwdriver to attach the 2 hole ground lug and wire assembly to the device with the 2 pan head Phillips head screws Step 5 Connect the other end of the ground wire to a suitable g...

Страница 44: ... below Figure 21 Attaching the AC Power Retainer Cord Step 2 Lift the power retainer and plug in the AC power supply Step 3 Push the retainer cord towards the power supply cord to lock it in place as shown in the figure below Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 38 Install the Router Activate an AC Power Supply ...

Страница 45: ...tors section for troubleshooting information Step 7 If you are installing a redundant power supply repeat these steps for the second power source If you are installing a redundant AC power supply ensure that each power supply is connected to a separate power source in order to prevent power loss in the event of a power failure Note Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installa...

Страница 46: ...ed 15A Note To attach the DC power supplies Procedure Step 1 Open the DC power supply guard Step 2 Attach the DC supply wires in the designated screws See the figure below Figure 23 Connecting the DC Power Supply Wires Step 3 Close the DC power supply guard Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 40 Install the Router Attach Cables to the DC Power Supply ...

Страница 47: ...ow to install and remove SFP and SFP modules see the documentation for the SFP or SFP module at Cisco SFP and SFP Transceiver Module Installation Notes Select the port on the device where you insert the SFP module If you choose copper cables connect to an RJ 45 connector The device 10 100 1000 ports configure themselves to operate at the speed of devices to which they are connected By default auto...

Страница 48: ... the device The wait period allows the transceiver software to initialize and synchronize with the device Changing an SFP before this wait period could result in transceiver initialization issues that disable the SFP Caution This section provides procedures for installing and connecting SFP modules Also it provides the procedure for removing SFP modules Install SFP Modules We strongly recommend th...

Страница 49: ...able from the SFP module and insert a dust plug into the cable end Step 3 Unlock and remove the SFP module If the module has a bale clasp latch pull the bale down and out to eject the module If the bale clasp latch is obstructed use a small flat blade screwdriver or any other narrow instrument to open the bale clasp latch Step 4 Grasp the SFP module between your thumb and index finger and carefull...

Страница 50: ...ont panel When connecting to devices or repeaters use a crossover cable Step 2 Connect the other end of the cable to an RJ 45 connector at the other device The port s LED turns on when both the device and the connected device have established a link If the port LED does not turn on check whether the device at the other end is turned on or whether there is any failure On user network interface UNI ...

Страница 51: ... install the USB driver now according to the instructions in the following sections Installing the Cisco USB Device Driver Uninstalling the Cisco USB Device Driver You cannot use the USB port and the EIA port concurrently When the USB port is used it takes priority over the EIA port Note Step 2 Connect the USB Type A cable to the PC Step 3 To communicate with the router start a terminal emulator a...

Страница 52: ...25 dev cu usbmodem1411DT macbook dev user Step 4 Connect to the USB port with the following command followed by the router USB port speed Example macbook user screen dev tty usbmodem1411 9600 To disconnect the OS X USB console from the terminal window enter Ctrl a followed by Ctrl Connecting to the Console Port Using Linux This procedure shows how to connect a Linux system USB port to the console ...

Страница 53: ...ct associated to your Cisco com profile Note Procedure Step 1 Unzip the file asr 9xx_usbconsole_drivers zip Step 2 Double click xrusbser_ver2100_installer exe in the XR21x141x Win DriversOnly Vers2 1 0 0 EXE folder Installation Wizard GUI is displayed Step 3 Click Next The InstallShield Wizard Completed window is displayed Step 4 Click Finish Step 5 Connect the USB cable to the PC and router USB c...

Страница 54: ... Router Figure 27 Cisco ASR 920 Router Flash Token Memory Stick Removing a USB Flash Device To remove and replace a USB flash token memory stick from and into a Cisco ASR 920 Router follow these steps Procedure Step 1 Execute the eject usb0 command before removing the USB from the router Example rommon 2 eject usb0 rommon 2 If you do not run this command before removing the USB the following error...

Страница 55: ...4 ports as described in GR 1089 CORE and require isolation from the exposed OSP cabling The addition of Primary Protectors is not sufficient protection in order to connect these interfaces metallically to OSP wiring Warning Connecting a Cable to the BITS Interface The following steps describe how to connect a cable to the router s BITS port Procedure Step 1 Confirm that the router is powered off S...

Страница 56: ...t Step 2 Connect the other end of the straight through Ethernet cable to the ToD or 1 PPS port on the RSP of the Cisco ASR 920 Router For instructions on how to configure clocking see the Cisco ASR 920 Series Aggregation Services Routers Configuration Guide Note Connect to EIA Console Port The serial console cable kit is not included with the device it must be ordered separately Note Procedure Ste...

Страница 57: ...s a crossover or straight through cable and adapts to it However the Ethernet Management port may be configured to a fixed speed 10 100 or 1000 Mbps through command line interface CLI commands In such a case the port is forced to operate in the MDI mode When in a fixed speed configuration and MDI mode use a crossover cable to connect to an MDI port a straight through cable to connect to an MDI X p...

Страница 58: ...Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 52 Install the Router Connect a Management Ethernet Cable ...

Страница 59: ...y that is pressed during this time is interpreted as a command to be executed when the messages stop That action results in getting the device to power off and start over It takes a few minutes for the messages to stop appearing Caution Procedure Step 1 Switch on the power supply Step 2 Observe the system LEDs to monitor the initialization process When the system boot is complete the process takes...

Страница 60: ...ns the Software Research tool on Cisco com The tool provides the minimum Cisco IOS XE requirements for individual hardware modules and components To access this tool you must have a Cisco com login account Note To access the Software Research tool 1 Go to http software cisco com selection research html 2 In the Search by Product tab type ASR 920 3 The Cisco Suggested Release versions are displayed...

Страница 61: ...s no no Step 2 Press Return to enter the user EXEC mode The following prompt is displayed Router Step 3 From the user EXEC mode enter the enable command Router enable Step 4 At the password prompt enter your system password if a password has not been set on your system you can skip this step Password enablepass When your password is accepted the privileged EXEC mode prompt is displayed Router You ...

Страница 62: ... a System Configuration Dialog as shown below When prompted to enter the initial configuration dialog enter yes Would you like to enter the initial configuration dialog yes no yes At any point you may enter a question mark for help Use ctrl c to abort configuration dialog at any prompt Default settings are in square brackets Basic management setup configures only enough connectivity for management...

Страница 63: ...stem cleans up all file systems After the reload operation is complete the device can be powered down safely To power down the device safely Procedure Step 1 Slip on the ESD preventive wrist strap included in the accessory kit Step 2 Enter the reload command Step 3 Click the Enter key when prompted to confirm Step 4 Wait for the system bootstrap message before powering down the system Step 5 Remov...

Страница 64: ...Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 58 Configure the Device Safely Power Down the Device ...

Страница 65: ...ower supply has been removed or replaced Caution You can replace the AC or the DC power supply Remove the DC Power Supply on page 59 Remove the AC Power Supply on page 61 Remove the DC Power Supply This equipment is suitable for installation in Network Telecommunications Facilities and locations where the NEC applies The equipment is suitable for installation as part of the Common Bonding Network ...

Страница 66: ...o not use the captive installation screw to pull out the power supply Caution Step 6 Grasping the power supply handle with one hand pull the power supply out from the chassis while supporting it with the other hand Step 7 Replace the DC power supply within 5 minutes Install the DC Power Supply Procedure Step 1 Ensure that the system earth ground connection has been made For ground connection insta...

Страница 67: ...DC Power Supply Step 5 Tighten the captive installation screw of the power supply The recommended maximum torque is 5 5 inch pounds 62 newton meters If you are installing a redundant DC power supply repeat these steps for the second power source too Remove the AC Power Supply Procedure Step 1 Disconnect the power cord from the power source Do not touch the metal prongs on the power cord when it is...

Страница 68: ...th ground connection has been made For ground connection installation instructions see the Installing the Chassis Ground Connection section Step 2 If necessary remove the blank power supply filler plate from the chassis power supply bay opening by loosening the captive installation screws Step 3 Grasp the power supply handle with one hand Place your other hand underneath the power supply as shown ...

Страница 69: ...n the captive installation screw of the power supply The recommended maximum torque is 5 5 inch pounds 62 newton meters Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 63 Replace the Power Supply Install the AC Power Supply ...

Страница 70: ...Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 64 Replace the Power Supply Install the AC Power Supply ...

Страница 71: ... the device information Bits BITS port GPS Port 1PPS and 10MHz USB Console CONSOLE port Time of Day TOD port Alarm ALARM port USB USB CON and USB MEM port and Management Ethernet MGMT port pinout information is provided in the following sections BITS Port Pinouts The following table summarizes the BITS port pinouts Table 7 BITS Port Pinouts Description Direction Signal Name Pin Receive Ring Input ...

Страница 72: ...square wave Waveform Input 2 4 volts TTL compatible Output 2 4 volts TTL compatible Input 1 7 volt p p 8 to 10 dBm Output 2 4 volts TTL compatible Amplitude 50 ohms 50 ohms Impedance 26 microseconds 50 duty cycle Pulse Width 40 nanoseconds Input AC coupled Output 5 nanoseconds Rise Time Time of Day Port Pinouts The following table summarizes the ToD 1 PPS port pinouts Table 9 RJ 45 1PPS ToD Port P...

Страница 73: ...Alarm Input Pinouts Description Signal Name Pin Alarm input 0 ALARM0_IN 1 Alarm input 1 ALARM1_IN 2 No connect 3 Alarm input 2 ALARM2_IN 4 Alarm input 3 ALARM3_IN 5 No connect 6 No connect 7 Alarm common COMMON 8 Management Ethernet Port Pinouts The following table summarizes the Management Ethernet port pinouts Table 11 Fan Alarm Port Pinout Signal Name Pin TRP0 1 Cisco ASR 920 20SZ M Aggregation...

Страница 74: ... Vcc A 1 Data D A 2 Data D A 3 Ground Gnd A 4 The USB console port 5VDC is input and operates as an USB peripheral device Note USB MEM Port Pinouts The following table summarizes the USB MEM port pinouts Table 13 Single USB MEM Port Pinouts Description Signal Name Pin 5VDC 500mA Vcc A 1 Data D A 2 Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 68 Troubleshooting Aids ...

Страница 75: ...s see the documentation for the SFP module at http www cisco com en US partner products hw modules ps5455 prod_installation_guides_list html Check Alarm Conditions The following table summarizes the meaning of the alarm conditions on the Cisco ASR 920 Router Table 14 Alarm Condition Summary Alarm Meaning Alarm Type Port in down state Environmental sensor threshold exceeded critical level voltage t...

Страница 76: ...ted FPGA image Digital code signing passed the control to Microloader to boot ROMMON Off Flashing Amber and Green alternatively System is in unresponsive state No console messages Digital code signing reported failure in ROMMON image validation Red Flashing Amber and Green alternatively Both LEDs turn Green once provisioning is complete ZTP process has begun Flashing Amber Green IOS XE image is bo...

Страница 77: ...e upside and the down arrow indicates the port on the downside Table 17 SFP Port LED Indication Indication LED State LED Link up in 1000Base X 100Base FX Green Labeled same as the SFP port number Activity in 1000 Base X 100Base FX Blinking Green Fault Error Yellow Link down Off SFP LEDs Each SFP port has an LED indicator Table 18 SFP Port LED Indication Indication LED State LED Link up in 10G Gree...

Страница 78: ...20 PSU LED Indication Indication LED State LED Power Supply is working and 12V output is alright Green O K 12V output failure Either input not present or fault in the power supply unit Red System Interface LED Behavior Table 21 1G Copper and 1G SFP LED Indication 1G SFP Port LEDs 1G Copper Port LEDs Link Duplex Event Off Off Off ROMMON Off Off Off IOS Shut Yellow Yellow Off IOS No shut cable disco...

Страница 79: ... Full Duplex Off ROMMON cable connect Off Off Off ROMMON cable disconnect Off Off Off IOS Shut Off Off Orange IOS No shut cable disconnect Green Green in 1G mode Orange Green in 100 10M mode Green IOS No shut cable connect Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 73 Troubleshooting Aids System Interface LED Behavior ...

Страница 80: ...Cisco ASR 920 20SZ M Aggregation Services Router Hardware Installation Guide 74 Troubleshooting Aids System Interface LED Behavior ...

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