Troubleshooting Cables and Connections | Cisco Systems ASR 901 10G

Appendix A Troubleshooting

Problem Solving

	Table A-2	Interpreting Environmental Reporting Features

	Symptom		Possible Cause	Corrective Action

	The router operates at an		There is a fan failure.	Take corrective steps. For
	abnormally high temperature.		There is an air conditioner	information about environmental
	The following message appears		There is an air conditioner	operating conditions, see the
	The following message appears		failure in the room.	operating conditions, see the
	on the console screen:		failure in the room.	System Specifications, page 1-9).
	on the console screen:		The air flow to cooling vents is	System Specifications, page 1-9).
	%SYS-1-OVERTEMP: System		The air flow to cooling vents is
	%SYS-1-OVERTEMP: System		blocked.
	detected OVERTEMPERATURE		blocked.
	detected OVERTEMPERATURE
	condition. Please resolve
	cooling problem immediately!

Troubleshooting Cables and Connections

Network problems can be caused by a cable or cable connection, or external device such as a modem, transceiver, hub, wall jack, WAN interface, or terminal. See Table A-3for information to help you isolate the problem.

Table A-3	Troubleshooting Cables, and Connections

Symptom		Possible Cause	Corrective Action

The router is experiencing		The router does not boot	Check the router chassis or
network problems.		properly.	software. For warranty
		The router constantly or	information, refer to the Cisco
		The router constantly or	Information Packet publication
		intermittently reboots.	Information Packet publication
		intermittently reboots.	that shipped with your router or
			that shipped with your router or
			contact customer service.

		The router boots, but the console	Verify that the parameters for
		screen is frozen.	your terminal are set as follows:
		screen is frozen.	your terminal are set as follows:
			(a) The terminal should have
			the same data rate as the
			router (9600 bps is the
			default).
			(b) 8 data bits.
			(c) No parity generated or
			checked.
			(d) 2 stop bits.

		The router powers on and boots	There may be a problem with the
		only when a particular cable is	module or cable. For warranty
		only when a particular cable is	module or cable. For warranty
		disconnected.	information, refer to the Cisco
			Information Packet publication
			that shipped with your order or
			contact customer service.

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

	OL-28105-02	A-3

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Cisco Systems ASR 901 10G manual Troubleshooting Cables and Connections, Information Packet publication

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 History Conventions ObjectivesAudience Organization Related Documentation Safety Warnings OL-28105-02 Hardware Description Introduction Cisco 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 View Power Supply Safety PrecautionsLEDs Specification Value Cisco ASR 901 10G Router AC Power Supply Specifications Pin Connector a Connector B Environmental Monitoring Temperature Sensor System Specifications Description SpecificationRouter Interface Numbering Cisco ASR 901 10G Router Interface Number Location Label Regulatory Compliance Chapter Safety with Equipment Safety Guidelines Safety with Electricity Preventing Electrostatic Discharge Damage Site Environment Power Supply ConsiderationsPrerequisites Site Planning Air Flow Guidelines Method of Procedure Required Tools and Equipment Unpacking and Checking the Contents of your Shipment Task Verified by Installation Checklist Task Verified by Date Console Port ConsiderationsCreating a Site Log Console Port Connections Preparing to Install the Router Console Port Considerations OL-28105-02 Network Modules Installing the Cisco ASR 901 10G Router Mounting the Cisco ASR 901 10G Router Rack-Mounting Configuration Guidelines Rack-Mounting Brackets Attaching Brackets to the Router Attaching 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 Rack Mounting the Router on a Wall Attaching Brackets for Wall-Mounting User-supplied screws Grounding the Cisco ASR 901 10G Router Connecting the Chassis Ground and Power Stripping a Ground Wire Power Connection Compliance Wiring the DC-Input Power Source 10 3-Pin Terminal Block Installing the DC Power Cord Retainer DC power cord 13 Inserting the Retainer through the Lanced Loop Installing the AC Power Cord Retainer Sleeve for thin power cords AC power cord Installing SFP Modules Installing and Removing SFP Modules 18 SFP Module with a Bale-Clasp Latch Removing SFP Modules Console Port Connecting CablesConnecting the Console Port Types of RJ-45 Cables Connecting the Network Cables Connecting Gigabit Ethernet Interface CablesConnecting T1 and E1 Interface Cables Connecting SFP Cables Connecting Cables to the Bits InterfaceConnecting GPS Cables Connecting to Alarm Port Connecting to the Management Ethernet PortDressing Router Cables Interpreting Front-Panel LEDs Powering on the RouterChecklist for Power on Power-On Procedure Copying Files Formatting Procedures for Flash MemoryFile and Directory Procedures Formatting Flash Memory as a DOS File System Deleting Files from the Flash Memory Displaying Contents of the Flash Memory Enter a Directory and Determine the Current Directory Displaying File Content What to Do After Installing the Hardware Problem Solving Troubleshooting Troubleshooting the Power and Cooling Systems Environmental Reporting FeaturesSymptom Possible Cause Corrective Action Information Packet publication Troubleshooting Cables and Connections Reading the LEDs Chassis LEDsColor/State Location Description Color/State Description two LEDs for each T1/E1 port T1/E1 Interface LEDsSFP Ethernet Interface LEDs 10G SFP+ Ethernet Interface LEDs RJ-45 Ethernet Interface LEDs Gigabit Ethernet Connector Pinouts Cable Specifications SFP and SFP+ Port Pinouts and Cable Specifications Pin FE Signal GE SignalT1/E1 Port Pinouts Pin Signal Name Direction Description Console Port Signals and Pinouts Console Port Signals and Pinouts Pin Signal Name HP Pins Direction DescriptionRJ-45-to-DB-9 Terminal Adapter Console Terminal Adapter Device Signal RJ-45 Pin DB-25 Pin Identifying a Rollover CableConsole RJ-45-to-DB-25 Port DTE Time of Day Pinouts Bits Port Pinouts 10 Mhz GPS Port Pinouts Pin Signal Name Description Alarm Port Pinouts Auxiliary Port Management Ethernet Port Pinouts OL-28105-02 Site Log Initials Date Numerics IN-2 IN-3 IN-4