Allied Telesis AT-FS750/24POE manual Troubleshooting, Chapter

Page 49

Chapter 3

Troubleshooting

This chapter contains information on how to troubleshoot the switch in the event that a problem occurs.

Note

If you need further assistance, please contact Allied Telesis

Technical Support. Refer to “Contacting Allied Telesis” on page 14.

Check the POWER LED on the front of the switch. If the LED is off, indicating that the unit is not receiving power, do the following:

ˆEnsure that the power cord is securely connected to the power source and to the AC connector on the back panel of the switch.

ˆVerify that the power outlet has power by connecting another device to it.

ˆTry connecting the unit to another power source.

ˆTry using a different power cord.

ˆVerify that the voltage from the power source is within the required levels for your region.

Verify that the LINK/ACT LED for each port is ON. If a LINK/ACT LED is

OFF, do the following:

ˆVerify that the end node connected to the port is powered on and is operating properly.

ˆVerify that the twisted pair cable is securely connected to the port on the switch and to the port on the end node.

ˆEnsure that the twisted pair cable does not exceed 100 meters (328 feet).

ˆVerify that you are using the appropriate category of twisted pair cable: Category 3 or better for 10 Mbps operation and Category 5 and Category 5E for 100 and 1000 Mbps operation.

Note

A 1000Base connection may require five to ten seconds to establish a link.

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Contents Installation Guide Page Electrical Safety and Emissions Standards Translated Safety Statements Contents Page Figures Tables Tables Tables Preface Symbol Meaning Description Safety Symbols Used in this DocumentWhere to Find Web-based Guides Contacting Allied Telesis WarrantyOnline Support Telephone Returning Products Chapter OverviewFeatures AT-FS750/24POE Front and Back PanelsUplink Combo Ports PortsAT-FS750/24POE Fast Ethernet Smart Switch Installation Guide LED LEDsPOE Port LEDs 100Base-T POE Port LEDs 10/100Base-T Non-POE Port LEDsUplink Combo Port LEDs SPD Power Supply Power over Ethernet Minimum Power Maximum Power Class MAC Address Table Duplex Mode Ethernet Switching BasicsBack Pressure and Flow Control Store ForwardAT-FS750/24POE Fast Ethernet Smart Switch Installation Guide Network Topologies Power Workgroup TopologyCollapsed Backbone Overview Installation Reviewing Safety Precautions AT-FS750/24POE Fast Ethernet Smart Switch Installation Guide Selecting a Site for the Switch Speed Type of Cable Operating Distance CablingUnpacking the Switch Attaching the Rubber Feet Installing the Switch on a DesktopFS750/24POEombo U We Installing a Switch in a RackAT-FS750/24POE Fast Ethernet Smart Switch Installation Guide Installation Installing an Optional SFP Transceiver 1100 Connecting Twisted Pair Cables Cabling and Powering On the SwitchConnecting Fiber Optic Cables Powering On the Switch 1104 Starting a Management Session Troubleshooting Troubleshooting Physical Specifications Technical SpecificationsEnvironmental Specifications Power SpecificationsConnectors and Port Pinouts Safety and Electromagnetic Emissions CertificationsRX+ TX+ Appendix a Technical Specifications
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AT-FS750/24POE specifications

Allied Telesis is renowned for its high-quality networking solutions, and the AT-FS750 series exemplifies this commitment with its robust functionality and advanced features. The AT-FS750/24POE and AT-FS750/48 are two powerful models designed to meet the diverse needs of modern networks, providing reliable connectivity and efficient power management.

The AT-FS750/24POE model is particularly notable for its Power over Ethernet (PoE) capabilities, allowing it to deliver power and data over the same Ethernet cable. This is especially beneficial for deploying devices like IP phones, security cameras, and wireless access points in locations where power sources may be limited. With 24 PoE-enabled ports, the switch can efficiently power multiple devices simultaneously, streamlining installations and reducing clutter.

Conversely, the AT-FS750/48 offers a more extensive configuration with 48 standard Ethernet ports. This model is ideal for larger networks that require seamless connectivity for a higher number of devices. Its robust architecture ensures optimal performance and reliability in demanding environments, making it a preferred choice for enterprises looking to enhance their infrastructure.

A key feature of both models is the Layer 2 switching technology, which ensures high-speed data forwarding and efficient traffic management within the local area network (LAN). This technology supports essential protocols such as VLAN (Virtual Local Area Network) tagging, enabling network segmentation and better security. The switches also boast a high switching capacity, ensuring minimal latency and maximizing throughput for connected devices.

Both AT-FS750 switches are designed with user-friendly management options. They support a web-based interface, simplifying configuration and monitoring tasks for IT staff. Additionally, the switches incorporate SNMP (Simple Network Management Protocol) for streamlined network management, allowing administrators to oversee network performance and troubleshoot issues effectively.

Another notable characteristic is their compact, fanless design, which not only reduces noise but also extends the lifespan of the equipment due to minimized thermal stress. The rugged casing ensures durability, making them suitable for various environments, from small offices to large enterprise networks.

In summary, the Allied Telesis AT-FS750/24POE and AT-FS750/48 switches provide a versatile solution for organizations seeking reliable and efficient networking capabilities. With PoE support, comprehensive management features, and robust performance, these switches are well-suited to meet the evolving demands of today's networking landscape.