3Com 3CRWE776075 quick start Port Status LED is on, but network performance is poor

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34Troubleshooting

The Port Status LED is on, but network performance is poor

There may be a full-duplex / half-duplex mismatch between the switch and a connected device.

Ensure that the connected device has either:

■Auto-negotiation enabled, or

■The ports are configured for half-duplex operation

Browser cannot find the Unified Switch 24

Make sure that:

■The PC’s IP address is in the same IP subnet as the switch.

■The PC’s subnet mask matches the subnet mask of the switch.

Trouble discovering the access points

Make sure that:

■The switch’s IP address is in the same IP subnet as the DHCP server.

■The switch’s subnet mask matches the subnet mask of the DHCP server.

LTK Error message when activating an AP

An LTK error is caused by either of the following situations:

■You are trying to activate an AP is already activated on another unified switch.

■You are trying to activate an AP that was previously activated on another unified switch.

When an AP is activated on a unified switch, the AP is imprinted with a special security key (LTK) that is shared between the unified switch and the AP. An AP that has been activated by a unified switch will only communicate with that one switch. If you later wish to activate the AP on a different unified switch, you must clear the LTK by performing a Short Reset on the AP as described in “Resetting Access Points” on page 26.

If the Problem Persists

If the problem persists refer to the more detailed troubleshooting information in your User’s Guide or on the 3Com Web site.

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Contents 3Com Unified Gigabit Wireless PoE Switch Page Page Page Contents Preparing the Managed Access Points Introducing Wireless PoE SwitchReference Description Introducing the 3Com Unified Gigabit Wireless PoE Switch Point for IP telephony solutions 3Com Unified Gigabit Wireless PoE Switch 24 is a versatileWeb-based user interface and setup wizard. Support for PoE Unified Switch 24 supports both wired Ethernet switchingIntroducing the 3Com Unified Gigabit Wireless PoE Switch Switch Checking the Package ContentsAufstellen des SwitchInstallation Free-StandingSmaller units must be positioned at the top Each switch, sticking one in the marked area at each cornerFree-standing stack of more than four units Inch equipment rack. The supplied mounting kit includes twoAnweisungen Des SwitchMontagesatz BaugruppenträgerSupplying Power Correct Operation Switch flashes greenChecking for Color StateUnified Switch Connecting your computer to the switchConnecting to the 3Com Unified Switch Using the setup wizard Settings will be lost the next time the switch is restarted Password onPoints Managed AccessActivating Subnet in order for them to communicateConnecting to the 3Com Unified Switch Access Points Preparing the ManagedClick the Upgrade button Access PointTo the 7760 Access Point Quick Start Guide PreparingTo the 8760 Access Point Quick Start Guide Resetting Access Points AP RecoveryUpgrade your Switch to Latest SoftwareRunning a New Software into the Switch onActive and which image will be used after the next reset Software ImageDefault Settings Changing the Password Approved SFP Inserting and usingSwitch TransceiversTransceiver Inserting the SFP TransceiverTroubleshooting Forgotten PasswordPort Status LED is on, but network performance is poor Environmental Physical ElectricalObtaining Support for your 3Com ProductAccess Software WarrantyServices Purchase ExtendedCountry Telephone Number Latin America Telephone Technical Support and Repair US and Canada 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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