3Com Managing Switches: SNMP and Default Password Setup
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50CHAPTER 3: SETTING UP FOR MANAGEMENT

Pre-requisites■ Documentation supplied with the SNMP network management application software.

To manage your Switch using an SNMP network management application, you need to specify SNMP community strings for the users defined on the Switch. You can do this using the command line interface system management snmp community command — refer to the command line interface section of the “SuperStack 3 Switch Management Interface Reference Guide” for more information.

Default Users and If you intend to manage the Switch using the web interface or the

Passwordscommand line interface, or to change the default passwords, you need to log in with a valid user name and password. The Switch has three default user names, and each user name has a different password and level of access. These default users are listed in Table 9.

CAUTION: To protect your Switch from unauthorized access, you must change all three default passwords as soon as possible, even if you do not intend to actively manage your Switch

Table 9

Default Users

 

 

 

 

User

Default

 

Name

Password

Access Level

 

 

 

monitor

monitor

monitor — the user can view all manageable parameters,

 

 

except special/security features, but cannot change any

 

 

manageable parameters.

manager

manager

manager — the user can access and change the

 

 

operational parameters but not special/security features

admin

(no

security — the user can access and change all manageable

 

password)

parameters

 

 

 

Changing Default Passwords

Use the admin default user name (no password) to login and carry out initial Switch setup.

You can change the default passwords using either:

■The gettingStarted command on the CLI, or

■The security device user modify command on the CLI, or

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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 Related DocumentationProduct Introducing About the Switch SeriesSwitch 4200 Series Front View DetailIntroducing the Superstack 3 Switch 4200 Series Color Indicates Port Status LEDs 10BASE-T/100BASE-TX ports Fiber GBICs1000BaseT GBICs Port Status LEDs Gbic portsUnit LEDs Power/Self Test LEDColor Indicates Alert LEDSystem RPS. See Connecting a Redundant Power System on Rear View DetailRmon Alarm Feature Switch 4200 Series Automatic IP ConfigurationDuplex Mode Quality of Service QoSInstalling the Switch Site Package ContentsChoosing a Suitable Rack-mounting Repeat steps 2 and 3 for the other side of the Switch Fitting a bracket for rack-mountingOn the unit above. Cable lengths of between 14 cm 5.5 Stacking UnitsUnit line up with the recesses of the lower unit 100 m 328 ft can be used for stackingSwitch 4200 Series Power-upPowering-up SequencePower/Self Test LED colors Color StateFiber cables Cross-over Cable Straight-through CableTransceivers Gbic OperationApproved Gbic The 3Com approved Gbic transceivers are Installing the Switch Gbic Installing the Switch Setting UP for Management Automatically configured IP information Setting UpConfigure IP information manually for your Switch or view OverviewManual IP Configuration Automatic IP ConfigurationSetting UP for Management Manually Configuring IP Information Pre-requisitesSetting 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 Interface Management Command LineNetwork Using Telnet CLI Management viaChoosing a Browser Setting Up WebInterface Over the Network Setting Up SnmpManagement Protocol Snmp can manage a Switch if Management workstationDefault Users User Default Name Password Access LevelSecurity Device User Modify operation on the web interface Setting UP for Management Problem Solving For Technical Support information, see Appendix DPower LED does not light Solving ProblemsSolutions below On powering-up, the Power/Self Test LED lights yellowSolving Hardware Snmp fan fail trap hardware failure ProblemsSolving Communication Problems IP AddressingHow do you obtain a registered IP Address? Solving StackFormation Solving Software Upgrade Problems Problem Solving Safety Information Important Safety Information This must be approved for the country where it is usedImportant Safety Information ’information de Sécurité Importante ’information de Sécurité Importante Wichtige Sicherheitsinformationen Vorsicht Europe Appendix a Safety Information Pin to RS-232 25-pin Null Modem CablePC-AT Serial Cable Pin to 9-pinModem Cable ConnectorsPin Number Signal Function RJ-45 PinPin Assignments RJ-45 connectors1000BASE-T RJ-45 Pin assignments Switch 4226T 3C17300 Terminal Emulation Protocols Used for AdministrationStandards Supported Switch 4250T 3C17302 SnmpSwitch 4228G 3C17304 Services Online TechnicalUsername anonymous Europe, Middle East and Africa Asia, Pacific RimFrom this region, e-mail From this region, enter the URLAsia, Pacific Rim Europe, Middle East, and AfricaCountry 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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