3Com 4250T, 4228G, 4226T manual Viewing Automatically Configured IP Information

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Viewing Automatically Configured IP Information

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■A suitable cable:

■A standard null modem cable — if you are connecting directly to the console port, or

■A standard modem cable — if you are connecting to the console port using a modem.

You can find pin-out diagrams for both cables in Appendix B on page 67.

■A Category 5 twisted pair Ethernet cable with RJ-45 connectors to connect your Switch to the network.

Connecting the Workstation to the Switch

1Connect the workstation to the console port using a standard null modem cable as shown in Figure 13.

Figure 13 Connecting a workstation to the Switch via the console port

To connect the cable:

aAttach the female connector on the cable to the male connector on the console port of the Switch.

bTighten the retaining screws on the cable to prevent it from being loosened.

cConnect the other end of the cable to one of the serial ports (also known as a COM port) on your workstation.

2Open your terminal emulation software and configure the COM port settings to which you have connected the cable. The settings should be set to match the default settings for the Switch, which are:

■19,200 baud

■8 data bits

■no parity

■1 stop bit

■no hardware flow control

Refer to the documentation that accompanies the terminal emulation software for more information.

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Contents SuperStack United States Government Legend 3Com Corporation 350 Campus Drive Marlborough, MAContents Setting UP for Management PIN -OUTS Safety InformationPage About this Guide Icon Description ConventionsConvention Description Documentation RelatedAbout this Guide Introducing Family About the SwitchFront View Detail Switch 4200 FamilyIntroducing the Superstack 3 Switch 4200 Series Port Status LEDs Gbic ports Fiber GBICs1000BASE-T GBICs Color Indicates Port Status LEDs 10BASE-T/100BASE-TX portsAlert LED Power/Self Test LEDColor Indicates Unit LEDsRear View Detail System RPS. See Connecting a Redundant Power System onQuality of Service QoS Feature Switch 4200 Family Automatic IP ConfigurationDuplex Mode Rmon AlarmInstalling the Switch Choosing a Suitable Package ContentsSite Rack-mounting Fitting a bracket for rack-mounting Repeat steps 2 and 3 for the other side of the SwitchTop of Each Other Placing Units OnStacking Units Sequence Power-upPowering-up Switch 4200 FamilyColor State Power/Self Test LED colorsCross-over Cable Straight-through Cable Fiber cablesTransceivers Approved Gbic The 3Com approved Gbic transceivers areInstalling the Switch Gbic Installing the Switch Setting UP for Management Overview Setting UpConfigure IP information manually for your Switch or view Automatically configured IP informationAutomatic IP Configuration Manual IP ConfigurationSetting UP for Management Pre-requisites Manually Configuring IP InformationConfiguring the Workstation with IP Information Connecting the Workstation to the SwitchSetting Up the Switch with IP Information Using Command Line Interface via Telnet Example top-level command line interface menu Connecting a workstation to the Switch via the console port Setting Up the Switch with IP Information Example top-level command line interface menu Viewing Configured IPAutomatically Viewing Automatically Configured IP Information Viewing IP Information via the Console Port Methods of Managing a Switch Refer to Setting Up Command Line Interface Management on CLI Management via Command LineNetwork Using Telnet Interface ManagementInterface Setting Up WebChoosing a Browser Management workstation Setting Up SnmpManagement Protocol Snmp can manage a Switch if Over the NetworkUser Default Name Password Access Level Default UsersSecurity Device User Modify operation on the web interface Setting UP for Management For Technical Support information, see Appendix D Problem SolvingOn powering-up, the Power/Self Test LED lights yellow Solving ProblemsSolutions below Power LED does not lightIP Addressing ProblemsSolving Communication Problems Solving Hardware Snmp fan fail trap hardware failureFormation Solving StackHow do you obtain a registered IP Address? Solving Software Upgrade Problems Problem Solving Safety Information This must be approved for the country where it is used Important Safety InformationImportant Safety Information ’information de Sécurité Importante Schko Wichtige Sicherheitsinformationen Vorsicht Europe Appendix a Safety Information Pin to 9-pin Null Modem CablePC-AT Serial Cable Pin to RS-232 25-pinPin Number 10/100 1000 Modem CableRJ-45 Pin AssignmentsPin Number 10/100 1000 Appendix B PIN-OUTS Switch 4226T 3C17300 Terminal Emulation Protocols Used for AdministrationSwitch 4250T 3C17302 Switch 4228G 3C17304 Purchase ServicesRegister Your ProductDownloads Access SoftwareTroubleshoot OnlineContact Us Latin America Telephone Technical Support and Repair Country Telephone Number800 876 Appendix D Obtaining Support for Your Product Numbers IndexIndex Regulatory Notices

4250T, 4226T, 4228G specifications

The 3Com 4228G, 4226T, and 4250T are professional-grade network switches designed for businesses seeking to enhance their network infrastructure. These models offer robust performance and reliability, catering to various networking needs, from small offices to large enterprise environments.

The 3Com 4228G switch is a 28-port gigabit Ethernet switch designed for high-bandwidth applications. It provides 24 Gigabit Ethernet ports with 802.3af Power over Ethernet (PoE) capability, allowing devices such as IP phones and wireless access points to be powered directly through the Ethernet cables. This feature simplifies installation and reduces additional cabling costs. The switch also supports VLAN tagging for network segmentation, improving security and performance. Its advanced traffic management lets IT administrators prioritize network traffic effectively, ensuring critical applications receive the necessary bandwidth.

On the other hand, the 3Com 4226T is a 26-port gigabit Ethernet switch, primarily designed for environments requiring a high level of connectivity without PoE. It offers similar features to the 4228G, such as VLAN support and enhanced traffic management capabilities. The 4226T is ideal for businesses that do not require power over Ethernet yet need reliable, high-speed networking capabilities. With 26 ports, this switch is an excellent choice for medium-sized enterprises looking to upgrade their network infrastructure without overwhelming their existing resources.

The 3Com 4250T is a more advanced switch, offering 48 Gigabit Ethernet ports and a robust feature set suitable for more complex networking environments. It includes Layer 2 and Layer 3 functionality, allowing for advanced routing and switching capabilities, making it highly adaptable to various network designs. The 4250T also simplifies network management through its extensive configuration options and support for IPv6. Moreover, it features an efficient cooling system and reduced power consumption, aligning with today’s growing demand for energy-efficient solutions.

All three models utilize advanced technologies such as Spanning Tree Protocol (STP) for loop prevention, QoS mechanisms to prioritize traffic, and comprehensive security features to protect the network from unauthorized access. With their different port configurations and capabilities, the 3Com 4228G, 4226T, and 4250T switches provide exceptional performance and flexibility, making them ideal for businesses aiming to enhance their networking capabilities.
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