Cisco Systems ASR 901 10G manual Troubleshooting, Problem Solving

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A P P E N D I X A

Troubleshooting

If you encounter problems while the router is in operation, use the information in this appendix to help isolate problems or to eliminate the router as the source of the problem.

This appendix contains the following sections:

•Problem Solving, page A-1

•Reading the LEDs, page A-4

If you cannot locate the source of the problem, contact a customer service representative for information on how to proceed. For technical support information, see the Cisco Information Packet publication that shipped with your router. Before you call, have the following information ready:

•Chassis type and serial number

•Maintenance agreement or warranty information

•Type of software and version number

•Date you received the new chassis

•Brief description of the problem

•Brief explanation of the steps you took to isolate the problem

Note Ensure you provide the customer service representative with any upgrade or maintenance information that was performed on the router after your initial installation (see Appendix C, “Site Log” for Site Log information.)

Problem Solving

To solve a problem, isolate the problem to a specific subsystem by comparing the current router activity to the expected router activity.

The LEDs on the front panel of the router enable you to determine router performance and operation. For a description of these LEDs, see “Reading the LEDs” section on page A-4.

When solving a problem, check the following router subsystems:

•Power and cooling systems—External power source, power cable, router power supply and circuit breaker, and router fans. Also check for inadequate ventilation or air circulation.

•Modules—Checking the LEDs on the modules can help you to identify a failure.

•Cables—Ensure that the external cables connecting the router to the network are all secure.

Cisco ASR 901 10G Series Aggregation Services Router Hardware Installation Guide

	OL-28105-02	A-1

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Contents Cisco Systems, Inc Page N T E N T S Site Environment Formatting Flash Memory as a DOS File System Alarm Port Pinouts B-8 Revision Date Change Summary Document Revision HistoryAudience ObjectivesOrganization ConventionsRelated Documentation Safety WarningsOL-28105-02 Hardware Description IntroductionCisco ASR 901 10G Router-Front View of TDM Version Cisco ASR 901 10G Router-Front View of Ethernet Version Cisco ASR 901 Router-Front View of Ethernet Version Cisco ASR 901 10G Router-Rear ViewSafety Precautions Power SupplyLEDs Specification Value Cisco ASR 901 10G Router AC Power Supply Specifications Pin Connector a Connector B Environmental Monitoring Temperature SensorDescription Specification System SpecificationsRouter Interface Numbering Cisco ASR 901 10G Router Interface Number Location Label Regulatory ComplianceChapter Safety with Equipment Safety GuidelinesSafety with Electricity Preventing Electrostatic Discharge Damage Prerequisites Power Supply ConsiderationsSite Planning Site EnvironmentAir Flow Guidelines Method of ProcedureRequired Tools and Equipment Unpacking and Checking the Contents of your ShipmentTask Verified by Installation ChecklistCreating a Site Log Console Port ConsiderationsConsole Port Connections Task Verified by DatePreparing to Install the Router Console Port Considerations OL-28105-02 Network Modules Installing the Cisco ASR 901 10G RouterMounting the Cisco ASR 901 10G Router Rack-Mounting Configuration GuidelinesRack-Mounting Brackets Attaching Brackets to the RouterAttaching Brackets for 19-Inch Racks Attaching Brackets for 23-Inch Racks Attaching Brackets for Etsi Racks Wall-Mounting Mounting the Cisco ASR 901 10G Router in a RackMounting the Router on a Wall Attaching Brackets for Wall-MountingUser-supplied screws Grounding the Cisco ASR 901 10G Router Connecting the Chassis Ground and PowerStripping a Ground Wire Power Connection Compliance Wiring the DC-Input Power Source 10 3-Pin Terminal Block Installing the DC Power Cord RetainerDC power cord 13 Inserting the Retainer through the Lanced Loop Installing the AC Power Cord RetainerSleeve for thin power cords AC power cord Installing SFP Modules Installing and Removing SFP Modules18 SFP Module with a Bale-Clasp Latch Removing SFP Modules Connecting the Console Port Connecting CablesTypes of RJ-45 Cables Console PortConnecting Gigabit Ethernet Interface Cables Connecting the Network CablesConnecting T1 and E1 Interface Cables Connecting Cables to the Bits Interface Connecting SFP CablesConnecting GPS Cables Connecting to the Management Ethernet Port Connecting to Alarm PortDressing Router Cables Checklist for Power on Powering on the RouterPower-On Procedure Interpreting Front-Panel LEDsFile and Directory Procedures Formatting Procedures for Flash MemoryFormatting Flash Memory as a DOS File System Copying FilesDeleting Files from the Flash Memory Displaying Contents of the Flash MemoryEnter a Directory and Determine the Current Directory Displaying File ContentWhat to Do After Installing the Hardware Problem Solving TroubleshootingEnvironmental Reporting Features Troubleshooting the Power and Cooling SystemsSymptom Possible Cause Corrective Action Information Packet publication Troubleshooting Cables and ConnectionsChassis LEDs Reading the LEDsColor/State Location Description SFP Ethernet Interface LEDs T1/E1 Interface LEDs10G SFP+ Ethernet Interface LEDs Color/State Description two LEDs for each T1/E1 portRJ-45 Ethernet Interface LEDs Gigabit Ethernet Connector Pinouts Cable SpecificationsPin FE Signal GE Signal SFP and SFP+ Port Pinouts and Cable SpecificationsT1/E1 Port Pinouts Pin Signal Name Direction Description Console Port Signals and PinoutsPin Signal Name HP Pins Direction Description Console Port Signals and PinoutsRJ-45-to-DB-9 Terminal Adapter Console Identifying a Rollover Cable Terminal Adapter Device Signal RJ-45 Pin DB-25 PinConsole RJ-45-to-DB-25 Port DTE Time of Day Pinouts Bits Port Pinouts10 Mhz GPS Port PinoutsPin Signal Name Description Alarm Port PinoutsAuxiliary Port Management Ethernet Port PinoutsOL-28105-02 Site Log Initials DateNumerics IN-2 IN-3 IN-4