3Com 4510G manual Loading Software Using Xmodem Through Console Port, Introduction to Xmodem

Page 52

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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Contents 3Com Switch 4510G Family Environmental Statement Chapter Contents About This ManualOrganization ConventionsRelated Documentation Obtaining DocumentationCreate Folder Convention DescriptionTable of Contents Page Switch 4510G 24-Port Switch 4510G 48-Port OverviewIntroduction to Switch 4510G Switch 4510G 24-PortSwitch 4510G 48-Port Specification PortsConsole Port 10/100/1000Base-T Ethernet PortCombo Port SFP PortModel SFP port 10/100/1000Base-T Ethernet port LEDs System Status LEDRPS Status LED LEDsPort Mode LED Seven-Segment LEDMark Status Description System status Seven-segment LED Description10/100/1000Base-T Auto-Sensing Ethernet Port Status LED Status Description Port mode Ethernet port statusStatus System status Seven-segment LED Description SFP Port Status LED Optional Interface ModulesInterface Module Status LED CX4 Cable Connector type Length Short-haul Dual-Port 10 GE CX4 Interface ModuleDual-Port 10 GE XFP Interface Module Central Max Transceiver Connector Fiber TransmissionDistance One-port 10 GE XFP Interface Module Dual-Port 10 GE SFP+ Interface ModuleConnector Fiber Transmission Cable type Distance Transceiver Central MaxDescription of LEDs of Interface Modules Safety Precautions Installation SiteTemperature/Humidity CleannessElectromagnetic Susceptibility Gas Maximum concentration mg/mInstallation Tools Laser SafetyInstalling the Switch Installation Flow of the SwitchUse Front Mounting Brackets to Install a Switch Introduction to Mounting BracketUse Front Mounting Brackets and a Tray to Install a Switch Connecting the Grounding Cable Mounting the Switch on a WorkbenchWhen a Grounding Strip is Available Page Where a Grounding Conductor Can be Buried Other Installation SitesConnecting the AC Power Cord Connecting the Power CordsSwitch module Power supply mode Connection method 9Connect an AC power cord to a horizontal AC power socket Installing an Interface Module Connecting the RPS Power CordInstalling an Interface Card Removing an Interface ModuleInstalling Dedicated CX4/SFP+ Cable Removing Dedicated CX4/SFP+ CableInstallation Flow for an IRF Installing Switches for an IRFTask Remarks Drawing a Plan for an IRF with Switches For details, see Installing an Interface ModuleSelect the proper interface modules and cables Page Verifying the Installation 22Cable 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

4510G specifications

The 3Com 4510G is a high-performance, stackable switch designed to meet the demands of modern enterprise networks. This switch is part of the 3Com switch family, known for its reliability, ease of use, and advanced features tailored for both small and medium-sized businesses, as well as larger enterprises.

One of the standout features of the 3Com 4510G is its high-density 10/100/1000 Mbps Gigabit Ethernet ports. With a configuration of up to 48 ports, this switch allows for efficient data transfer and connectivity among devices in the network. The switch also supports Power over Ethernet (PoE), enabling it to deliver power to PoE-enabled devices like IP phones, wireless access points, and security cameras, simplifying deployment and reducing cable clutter.

In terms of performance, the 3Com 4510G offers non-blocking architecture, which ensures that any port can handle its maximum throughput without causing bottlenecks. This switch is equipped with a high-performance switching capacity, allowing for seamless data flow and minimizing latency, which is critical for applications such as voice over IP (VoIP) and video conferencing.

The 3Com 4510G also provides advanced Layer 2 and Layer 3 routing capabilities. It supports features like VLANs, link aggregation, and multicast routing, which enhance network segmentation and optimize traffic management. The switch supports a comprehensive set of security features, including Access Control Lists (ACLs) and port security, to safeguard the network against unauthorized access.

Management is another strong suite of the 3Com 4510G. It supports Simple Network Management Protocol (SNMP) for effective network monitoring and management, as well as a user-friendly web interface and command-line interface (CLI) for easy configuration. Network administrators can easily troubleshoot and maintain the switch through these interfaces, ensuring optimal performance.

Additionally, the 3Com 4510G is designed with energy efficiency in mind, adhering to environmental standards, and thereby reducing operational costs over time.

With its robust feature set, advanced technologies, and high reliability, the 3Com 4510G switch stands out as an excellent choice for organizations looking to build a scalable and efficient network infrastructure. Its combination of performance, ease of management, and security makes it a valuable asset for meeting current and future networking needs.
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