3Com C17304, 3C17300, C17302 Problem Solving, For Technical Support information, see Appendix D

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4

PROBLEM SOLVING

 

This chapter helps you to diagnose and solve problems you may have with the operation of your Switch. There is also an explanation of IP addressing.

The topics covered are:

■Solving Problems Indicated by LEDs

■Solving Hardware Problems

■Solving Communication Problems

■Solving Software Upgrade Problems

If you experience a problem that is not listed here, it may be included in the support section of the SuperStack 3 Switch Management Interface Reference Guide on the CD-ROM that accompanies your Switch.

For Technical Support information, see Appendix D.

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Contents SuperStack 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Setting UP for Management PIN-OUTS Index Regulatory Notices About this Guide Convention Description ConventionsIcon Description Documentation RelatedProduct Introducing Series About the SwitchFront View Detail Switch 4200 SeriesIntroducing the Superstack 3 Switch 4200 Series 1000BaseT GBICs Fiber GBICsColor Indicates Port Status LEDs 10BASE-T/100BASE-TX ports Port Status LEDs Gbic portsColor Indicates Power/Self Test LEDUnit LEDs Alert LEDRear View Detail System RPS. See Connecting a Redundant Power System onDuplex Mode Feature Switch 4200 Series Automatic IP ConfigurationRmon Alarm Quality of Service QoSInstalling the Switch Site Package ContentsChoosing a Suitable Rack-mounting Fitting a bracket for rack-mounting Repeat steps 2 and 3 for the other side of the SwitchUnit line up with the recesses of the lower unit Stacking UnitsOn the unit above. Cable lengths of between 14 cm 5.5 100 m 328 ft can be used for stackingPowering-up Power-upSwitch 4200 Series SequenceColor State Power/Self Test LED colorsCross-over Cable Straight-through Cable Fiber cablesTransceivers Gbic OperationApproved Gbic The 3Com approved Gbic transceivers are Installing the Switch Gbic Installing the Switch Setting UP for Management Configure IP information manually for your Switch or view Setting UpAutomatically configured IP information OverviewAutomatic IP Configuration Manual IP ConfigurationSetting UP for Management Pre-requisites Manually Configuring IP InformationSetting Up the Switch with IP Information Connecting the Workstation to the SwitchConfiguring the Workstation 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 Automatically Configured IPViewing 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 Network Using Telnet Command LineInterface Management CLI Management viaChoosing a Browser Setting Up WebInterface Management Protocol Snmp can manage a Switch if Setting Up SnmpOver the Network Management workstationUser 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 SolvingSolutions below Solving ProblemsPower LED does not light On powering-up, the Power/Self Test LED lights yellowSolving Communication Problems ProblemsSolving Hardware Snmp fan fail trap hardware failure IP AddressingHow do you obtain a registered IP Address? Solving StackFormation 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 ’information de Sécurité Importante Wichtige Sicherheitsinformationen Vorsicht Europe Appendix a Safety Information PC-AT Serial Cable Null Modem CablePin to RS-232 25-pin Pin to 9-pinPin Number Signal Function ConnectorsModem Cable RJ-45 PinPin Assignments RJ-45 connectors1000BASE-T RJ-45 Pin assignments Switch 4226T 3C17300 Terminal Emulation Protocols Used for AdministrationStandards Supported Snmp Switch 4250T 3C17302Switch 4228G 3C17304 Online Technical ServicesUsername anonymous From this region, e-mail Asia, Pacific RimEurope, Middle East and Africa From this region, enter the URLEurope, Middle East, and Africa Asia, Pacific RimCountry Telephone Number Asia, Pacific Rim Country Telephone Number Latin America Index Snmp Regulatory Notices
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C17304, C17302, 3C17300 specifications

The 3Com C17304, 3C17300, and C17302 are notable models in the 3Com networking product line, renowned for their performance and technological advancements. These models cater to various networking environments, providing robust solutions for both small and medium-sized businesses as well as larger enterprises seeking reliable connectivity.

The 3Com C17304 is recognized for its formidable capacity and flexibility. It offers a high port density, which allows for multiple devices to connect without compromising performance. This model features built-in support for Power over Ethernet (PoE), enabling the powering of devices such as IP cameras and phones directly through the network cable. The 3Com C17304 is designed with advanced security features, including integrated VLAN support for traffic segmentation and enhanced security protocols to protect sensitive data.

The 3C17300 is another essential player in this lineup, embodying versatility and ease of use. This model is equipped with a user-friendly interface that simplifies network management, making it accessible for IT professionals at all levels. The 3C17300 includes capabilities for Layer 2 switching, providing efficient data forwarding with minimal latency. Its intelligent features, such as link aggregation and QoS (Quality of Service), ensure optimized bandwidth utilization while prioritizing critical applications.

Meanwhile, the C17302 is specifically engineered for performance-driven environments. It excels in delivering high-speed connectivity with its support for Gigabit Ethernet, significantly enhancing data transfer rates. The C17302 also incorporates advanced routing capabilities, allowing for dynamic network management and improved performance in complex network topologies. Furthermore, this model boasts reliability with redundancy features designed to minimize downtime, ensuring consistent access to network resources.

All three models leverage innovative technologies to deliver superior performance. They support various standards such as IEEE 802.1Q for VLAN tagging and IEEE 802.3ad for link aggregation. User-centric features like SNMP for network monitoring and troubleshooting enhance the overall management experience. These switches are built to provide scalability, enabling businesses to expand their networks seamlessly as demands grow.

In summary, the 3Com C17304, 3C17300, and C17302 showcase advanced features, reliability, and effective performance, making them integral components of modern networking solutions. Ideal for a range of applications, they help businesses optimize their network infrastructure while maintaining robust security and efficient data handling.
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