3Com 3CRWE776075 quick start Troubleshooting, Forgotten Password

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9 Troubleshooting

For complete troubleshooting information please refer to your User's

Guide or visit 3Com’s World Wide Web site: http://www.3Com.com.

Here are some common problems that can occur.

Forgotten Password

If you forget the password to the Web interface, you will need to reset the switch to factory defaults. See “Restoring the Factory Default Settings” on page 29.

A link is connected, but the Port Status LED for the port is off

There is a problem with this connection. Verify that:

■The device being connected to is powered on and operating correctly.

■The cable is connected at both ends.

■The cable is not damaged.

■If the connection is to a workstation, that the workstation's network interface is installed and configured correctly.

■The correct category of cable is being used for the required link speed. Category 3 cables can be used for 10BASE-T operation only. Category 5 cable is required for 100BASE-TX or 1000BASE-T. 3Com recommends Category 5e or 6 cables for 1000BASE-T operation.

A fiber cable is connected, but the Module Status LED is off

Verify that:

■The fiber cable is in good condition.

■The SFP module is correctly inserted.

■A 3Com® SFP module is being used. Refer to “Using SFP Transceivers” on page 31 for details.

■The equipment at the far end is installed and correctly configured.

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Contents 3Com Unified Gigabit Wireless PoE Switch Page Page Page Contents Preparing the Managed Access Points Wireless PoE Switch IntroducingReference Description Introducing the 3Com Unified Gigabit Wireless PoE Switch Web-based user interface and setup wizard. Support for PoE 3Com Unified Gigabit Wireless PoE Switch 24 is a versatilePoint for IP telephony solutions Unified Switch 24 supports both wired Ethernet switchingIntroducing the 3Com Unified Gigabit Wireless PoE Switch Checking the Package Contents SwitchInstallation SwitchAufstellen des Free-StandingFree-standing stack of more than four units Each switch, sticking one in the marked area at each cornerSmaller units must be positioned at the top Inch equipment rack. The supplied mounting kit includes twoMontagesatz Des SwitchAnweisungen BaugruppenträgerSupplying Power Checking for Switch flashes greenCorrect Operation Color StateConnecting your computer to the switch Unified SwitchConnecting to the 3Com Unified Switch Using the setup wizard Password on Settings will be lost the next time the switch is restartedActivating Managed AccessPoints Subnet in order for them to communicateConnecting to the 3Com Unified Switch Preparing the Managed Access PointsTo the 7760 Access Point Quick Start Guide Access PointClick the Upgrade button PreparingTo the 8760 Access Point Quick Start Guide AP Recovery Resetting Access PointsLatest Software Upgrade your Switch toActive and which image will be used after the next reset Software into the Switch onRunning a New Software ImageDefault Settings Changing the Password Switch Inserting and usingApproved SFP TransceiversInserting the SFP Transceiver TransceiverForgotten Password TroubleshootingPort Status LED is on, but network performance is poor Environmental Electrical Physical3Com Product Obtaining Support for yourServices WarrantyAccess Software Purchase ExtendedCountry Telephone Number US and Canada Telephone Technical Support and Repair Latin America Telephone Technical Support and Repair

3CRWE776075 specifications

The 3Com 3CRWE776075 is a versatile wireless router designed to meet the demands of both home and small business networking. This device stands out due to its reliable performance, robust features, and ease of use, providing users with seamless connectivity and enhanced wireless coverage.

One of the main features of the 3CRWE776075 is its support for 802.11g wireless technology, which enables data transfer rates of up to 54 Mbps. This ensures that users can enjoy high-speed internet access with stable connections while streaming videos, gaming, or transferring files across the network. Additionally, the router is backward compatible with 802.11b devices, providing flexibility for mixed environments where older devices may still be in use.

The router is equipped with a powerful built-in firewall, enhancing security by protecting the network from unauthorized access and potential threats. The 3CRWE776075 supports Network Address Translation (NAT) and Stateful Packet Inspection (SPI), forming a formidable barrier against intrusion attempts. Additionally, it offers robust wireless security features, including WEP, WPA, and WPA2 encryption protocols, ensuring that users' data remains secure during transmission.

Another notable characteristic of the 3Com 3CRWE776075 is its user-friendly interface, which simplifies the setup process for both tech-savvy individuals and novices alike. The router comes with an easy-to-follow installation wizard, guiding users through the configuration of network settings and security options. The web-based management interface allows for easy monitoring and management of the network settings, enabling users to adjust bandwidth allocation, set up guest networks, and manage connected devices effortlessly.

The 3CRWE776075 is also designed with flexibility in mind, as it features multiple Ethernet ports for wired connections, catering to devices that require more stable connections, such as desktop computers or gaming consoles. This dual capability of supporting both wired and wireless connections makes it an ideal choice for diverse networking needs.

Overall, the 3Com 3CRWE776075 delivers an excellent combination of performance, security, and user-friendliness, making it a reliable choice for users looking to enhance their home or small business networking experience. With its robust features and solid technologies, it continues to be a favored option in the realm of wireless routers.
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