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3Com 5000 the Power System, Troubleshooting of, the Console, Terminal, Troubleshooting Check

Models: 5000

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4 Troubleshooting

Troubleshooting the Power System 51

4 Troubleshooting

Troubleshooting	Fault: POWER LED is OFF or blinking.
the Power System	Troubleshooting: Check:
	Troubleshooting: Check:
	■ Whether the power switch of the router is turned on.
	■ Whether the power supply switch is turned on.
	■ Whether the power cord of the router is properly connected.
	■ Whether the power supply matches the requirement of the router.
	CAUTION: Do not hot swap the power cord. After having checked the
	items above, if the POWER LED is still OFF, please contact the agent.

Troubleshooting of	After the Power-On Self-Test (POST) of the router, if the system operates
the Console	normally, the start-up information should be displayed on the console
Terminal	terminal. If the configuration system has some faults, the terminal may
	not display anything or may display only illegible characters.
	Troubleshooting of “nothing being displayed on the terminal”
	Fault: After the POST of the router, the terminal does not display any
	information.

Troubleshooting: Check:

■Whether the power system is normal.

■Whether the console cable is connected correctly.

If no problems are found after performing the above checks, it is likely to be the problem of the console cable or the terminal (e.g., the HyperTerminal) parameters. Please check the cable or the parameters.

Image 51

3Com 5000 manual the Power System, Troubleshooting of, the Console, Terminal, Troubleshooting Check

Contents

Getting Started Guide 3Com Router 5000 FamilyEnd of Life Statement 3Com Corporation 350 Campus Drive Marlborough MAUNITED STATES GOVERNMENT LEGEND ENVIRONMENTAL STATEMENTDownload the latest software and documentation for your 3Com Router Page 1 Introducing the Router 5000 Family ContentsContents About This Guide Download the latest software and documentation for your 3Com RouterRouter Software Maintenance 2 Installation3 Starting and Configuring the Router TroubleshootingContents Solve Problems OnlinePurchase Extended Warranty and Professional Services Access Software Downloads Contact Us8 Contents About This Guide Related Router 5000/6000 Configuration GuideRouter 5000/6000 Command Reference Guide ConventionsDocumentation Commentspddtechpubscomments@3com.com network supplier12 About This Guide 1 Introducing the Router 5000 Family About theRouter High-performance processor The Router 5000 usesEthernet access solution By extending SICs and MIMs, the Figure 1 Front view of 3Com Router 3Com Router3C13701 Figure 2 Rear view of 3Com RouterIndication System DescriptionTable 2 Router 5012 Indicators Table 3 System description of 3Com RouterBoot ROM Stores Bootstrap program 3C137513Com Router Figure 4 Rear view of 3Com Router Table 4 LEDs of 3Com 5232 RouterIndication Boot ROM Stores Bootstrap program System DescriptionTable 5 System description of 3Com Router Figure 6 Rear view of 3Com Router 3C13755Table 6 Router 5642 Indicators 3Com Router 5642 Figure 5 Front view of 3Com RouterIndication Table 6 Router 5642 Indicators continuedSystem Description Table 7 System description of 3Com Router3C13759 3Com Router 5682 Figure 7 Front view of 3Com RouterFigure 8 Rear view of 3Com Router 3Com Router 5682 3C13759 Table 8 Router 5682 IndicatorsSystem Description Table 9 System description of 3Com Router24 Chapter 1 Introducing the Router 5000 Family Router in a Rack 2 InstallationInstalling the Router on a Workbench Installing thePGND Wire Power Cords Grounds and Cableswell grounded. Otherwise, the router cannot reliably avoid lightning Power CordAC Power Cord AC power supplyFigure 11 AC Power Connector Recommended power outletConsole cable Console Terminal Introduction to console portRouter to LAN Connection Introduction to the Ethernet interfaceEthernet cable AUX cable Router to WANConnection Introduction to the AUX portIntroduction to the synchronous/asynchronous serial interface WAN Interface to DSU/CSUSynchronous/asynchronous mode DTE and DCE Figure 16 V.24 RS232 DCE cable assembly V.24 RS232 DCE cable assemblyV.35 DTE cable assembly Figure 15 V.24 RS232 DTE cable assemblyFigure 18 V.35 DCE cable assembly V.35 DCE cable assemblyX.21 DTE cable assembly Figure 17 V.35 DTE cable assemblyFigure 20 X.21 DCE cable assembly Figure 19 X.21 DTE cable assembly38 Chapter 2 Installation Figure 21 V24 DTE cable assemblyFigure 22 V.24 DCE cable assembly Figure 23 V.35 DTE cable assemblyFigure 24 V.35 DCE cable assembly Figure 25 X.21 DTE cable assemblyFigure 26 X.21 DCE cable assembly Attribute E1 interface to DSU/CSU75Ω unbalanced coax cable 120Ω balanced twisted pair cableFigure 28 E1 120Ω balanced twisted pair cable T1 interface to DSU/CSU T1 interface cable and network connector assembly are optionalSetting the parameters for console terminal 3 Starting and Configuring the RouterSetting up Configuration Environment Connecting the router to a console terminal1 Select a connection port Powering on the router Checking before power-onChecking/operating after power-on Press Enter and the screen will display the Router ConfigurationCharacteristics of the command line interface Fundamentals ofConfiguration Fundamentals of the Router Command line interface50 Chapter 3 Starting and Configuring the Router Troubleshooting of 4 TroubleshootingTroubleshooting the Power SystemTroubleshooting of “displaying illegible characters on the terminal” Troubleshooting of repeated rebootSDRAM Application Software UpgradeUpgrade the application software again after the problem is solved Introduction 5 Router Software MaintenanceSoftware Maintenance underextended and basic. You can separately upgrade and back up the Boot MenuThe following table gives default names and types of the boot files 4 Display applications in Flash memory 6 Clear console authentication Upgrading the application image Upgrading Software through XMODEMFigure 34 Send File dialog box ROM image, so you can make a second attempt once errors occur Upgrading the entire Boot ROM imageUpgrading the extended segment of the Boot ROM image CAUTION This upgrade approach upgrades only a portion of the BootRestore Extended Segment, are you sure?Y/N Upgrading the application image through EthernetBackup Extended Segment, are you sure?Y/N Backuping Boot ROM program to FLASH successed2 In Boot Menu, select 2 to enter Net Port Download Menu as follows 64 Chapter 5 Router Software Maintenancehost inet h IP address of TFTP Server flags f host inet h IP address of FTP Server Loss Router Passwordpassword loss. They can help you to set a new password Dealing with aProduct to Gain Service BenefitsSolve Problems Online Register YourPurchase Extended Warranty andServices Access Softwarehttp//csoweb4.3com.com/contactus Contact UsTelephone Technical Support and RepairTelephone Number CountryTelephone Number CountryTelephone Number CountryTelephone Number Country72 APPENDIX A OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS