3Com 4210G manual Loading Software Using Xmodem Through Console Port, Introduction to Xmodem

Page 64

The loading process of the Boot ROM software is the same as that of the host software, except that during the Boot ROM loading process, you must enter the different digit after entering the Boot Menu and the system gives somewhat different prompts. The following text mainly describes the Boot ROM loading process.

Loading Software Using XMODEM Through Console Port

Introduction to XMODEM

XMODEM is a file transfer protocol that is widely used due to its simplicity and good performance. XMODEM transfers files via console port. It supports one type of data packets (128 bytes), two check methods (checksum and CRC), and error packet retransmission mechanism (generally the maximum number of retransmission attempts is ten).

The XMODEM transmission procedure is completed by the cooperation of a receiving program and a sending program. The receiving program sends a negotiation packet to negotiate a packet check method. After the negotiation, the sending program starts to transmit data packets. When receiving a complete packet, the receiving program checks the packet using the agreed method. If the check succeeds, the receiving program sends an acknowledgement packet and the sending program proceeds to send another packet; otherwise, the receiving program sends a negative acknowledgement packet and the sending program retransmits the packet.

Loading Boot ROM software

Complete the following tasks to update the Boot ROM software using XMODEM through the console port (For details about the HyperTerminal, refer to Setting Terminal Parameters on page 4-2):

 

Task

Remarks

 

Enter the Boot ROM update menu on the switch

Required

 

 

Log in to the switch through the HyperTerminal

 

Configure the switch to download files using

 

and then configure the protocol used for loading

 

XMODEM

 

files.

 

 

 

 

 

 

 

Required

 

Set the download rate of the console port on the

Log in to the switch through the HyperTerminal

 

switch

and then set the download rate of the console port

 

 

on the switch.

 

 

 

 

 

Optional

 

Change the rate of the serial port on the

Set the baud rate of the serial port on the terminal

 

terminal

to be consistent with that of the console port on

 

 

the switch.

 

 

 

 

 

Required

 

Download the Boot ROM file

Transmit a file from the terminal to the switch, and

 

 

update the Boot ROM file on the switch.

 

 

 

 

 

Optional

 

Restore the download rate to the default

Set the baud rate of the serial port on the terminal

 

to be consistent with the default rate of the

 

 

 

 

console port on the switch.

 

 

5-3

 

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Page 63 Page 65
Contents 3Com Switch 4210G Family Environmental Statement Chapter Contents About This ManualOrganization ConventionsRelated Documentation Obtaining DocumentationCreate Folder Convention DescriptionTable of Contents Page Iii Overview 4210G 24-Port 4210G 48-Port 4210G PWR 4210G NTVDC Introduction to Switch 4210G Switch 4210G 24-PortSwitch 4210G 48-Port Switch 4210G PWR 24-Port Switch 4210G PWR 48-Port Switch 4210G NT 24-Port Ports Switch 4210G NT 48-PortConsole Port 10/100/1000Base-T Ethernet Port Specification1000Base-X SFP Port LEDs Combo PortModel SFP port 10/100/1000Base-T Ethernet port LEDsPort Mode LED System Status LEDRPS Status LED Status DescriptionStatus Seven-Segment LEDSystem status Seven-segment LED Description 10/100/1000Base-T Auto-Sensing Ethernet Port Status LED Status Description Port mode Ethernet port 1000Base-X SFP Port Status LEDOptional Interface Modules Interface Module Status LEDShort-haul Dual-Port 10 GE CX4 Interface Module Mark Status DescriptionCX4 Cable Connector type Length Dual-Port 10 GE XFP Interface ModuleOne-port 10 GE XFP Interface Module Central Max Transceiver Connector Fiber TransmissionDistance Dual-Port 10 GE SFP+ Interface Module Connector Fiber Transmission Cable type DistanceTransceiver Central Max Description of LEDs of Interface Modules 22 SFP+ cableSafety Precautions Installation SiteTemperature/Humidity CleannessElectromagnetic Susceptibility Gas Maximum concentration mg/mInstallation Tools Laser SafetyInstalling the Switch Installation Flow of the SwitchIntroduction to Mounting Bracket Use Front Mounting Brackets to Install a Switch Model Physical dimensions × W × DConfiguration Type of front Mounting bracket Configuration Type of rear Mounting BracketUse Front Mounting Brackets and a Tray to Install a Switch Use Front and Rear Mounting Brackets to Install a Switch Page Page Mounting the Switch on a Workbench Connecting the Grounding Cable When a Grounding Strip is AvailableWhere a Grounding Conductor Can be Buried Other Installation Sites Connecting the AC Power Cord Connecting the Power CordsSwitch module Power supply Connection method Mode Connecting the RPS Power Cord 16Connect an AC power cord to a horizontal AC power socketPage Installing an Interface Module Installing an Interface CardInstalling Dedicated CX4/SFP+ Cable Removing an Interface ModuleInstalling Switches for an IRF Removing Dedicated CX4/SFP+ CableInstallation Flow for an IRF Task RemarksDrawing a Plan for an IRF with Switches For details, see Installing an Interface ModuleConfigure the physical connection mode Page Verifying the Installation 29Cable connections for an IRF with 1-port interface modulesSetting up the Configuration Environment Connecting the Console CableRJ-45 Signal Direction DB-9 Console CableSetting Terminal Parameters Connection Procedure4Set the serial port used by the HyperTerminal connection 6HyperTerminal window Checking before Powering on the Switch Booting the SwitchPowering on the Switch Describes the fields above 2Description on the fields Changing the Startup Mode Enter Y. The system displays the following information BUS Clock Speed 33MHz Memory Size 128MB Mac Address Page Boot Menu Loading Software Through the Boot ROM MenuIntroduction to Loading Modes Press Ctrl + B. The system displays Loading Software Using Xmodem Through Console Port Introduction to XmodemRequired ROM file effective2Properties dialog box Cccccccccccccccccc CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCdone Loading Software Using Tftp through Ethernet Port Loading host softwareLoad File name Loading Software Using FTP Through Ethernet Port Introduction to FTPDescription Loading Software Using FTP Loading Software Through CLILoading Software Using Tftp Update the Boot ROM program on the switchPassword Missing Failure Missing User PasswordMissing Boot ROM Password Software Loading FailurePower Supply Failure AC inputRPS input RPS&AC inputMark State System status LED Fan FailureSteady red Troubleshooting when there is no terminal display Configuration System FailureTroubleshooting when the terminal display is illegible
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