Allied Telesis AT-PC232/POE manual Troubleshooting, Chapter

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Chapter 3

Troubleshooting

Here are suggestions on how to troubleshoot the twisted pair port and the fiber optic port on the AT-PC232/POE Media Converter.

Problem 1: The two ports are connected to network devices, but the Link LEDs for the ports are off.

Solution: The first step to resolving a link problem between the ports on the media converter and the network devices is to set the operating mode of the unit to the Smart MissingLink mode or the Link Test mode. These modes allow you to use the Link LEDs to identify which port is unable to establish a link to its network device. The operating mode is set with the Mode selector button.

After setting the unit to the Smart MissingLink or Link Test mode, observe the Link LEDs again. If the Link LED for the twisted pair port is off, go to Problem 2. If the Link LED for the fiber optic port is off, go to Problem 3.

Problem 2: The Link LED for the fiber optic port is on or blinking, but the Link LED for twisted pair port is off.

Solution: The twisted pair port has not established a link with its network device. Try the following:

ˆVerify that the network device connected to the twisted pair port is powered on and operating properly.

ˆVerify that the twisted pair cable is securely connected to the port on the media converter and to the port on the remote network device.

ˆTry connecting another network device to the twisted pair port with a different cable. If the twisted pair port is able to establish a link, then the problem is with the cable or the other network device.

Problem 3: The Link LED of the twisted pair port is on or blinking, but the Link LED of the fiber optic port is off.

Solution: The fiber optic port is unable to establish a link to its network device. Try the following:

ˆVerify that the network device connected to the fiber optic port is operating properly.

ˆVerify that the fiber optic cable is securely connected to the port on the media converter and to the port on the remote network device.

Section II: Advanced Operations

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Contents Installation Guide Page Electrical Safety and Emissions Standards Translated Safety Statements Contents Page Figures Figures Tables Tables Preface Symbol Meaning Description Safety Symbols Used in this DocumentWhere to Find Web-based Guides Contacting Allied Telesis Management Software UpdatesChapter OverviewAT-PC232/POE Front Panel IntroductionKey Features 10/100Base-TX Twisted Pair Port Type of Connector Port Speed Duplex ModeMaximum Distance Type of Cabling Auto MDI/MDI-X Port Pinouts Optical Receiver Sensitivity 100Base-FX Fiber Optic PortOperating Modes Link Test Mode MissingLink ModeSmart MissingLink Mode Setting the Operating Mode Power over Ethernet Minimum Power Maximum Power Class Power Budgeting ImplementationColor Description LEDsAuto PoE PWR LEDs Operating Mode LEDsDIP Switches MAC Address Table Store Forward Few Basics about Ethernet SwitchingStandalone Topology Network TopologiesBack-to-Back Topology Back-to-Back TopologyInstallation Verifying the Package Contents Maximum Planning the InstallationSpeed Type of Cable Speed Cable TypeSelecting a Site Reviewing the Safety GuidelinesAT-PC232/POE Media Converter Installation Guide Installation Desktop Installation Positioning the Switch onto the Wall Screws Wall-Mount InstallationCabling the Fiber Optic Ports Cabling the PortsConnecting to the Copper Port AT-PC232/POE Media Converter Installation Guide Port Function Position Description Switch Configuring the DIP SwitchesInserting the Retaining Clip into the Retaining Bracket Installing the Power Cord Retaining ClipConnecting the AC Power Cord Applying AC Power240 Verifying the Installation Troubleshooting Troubleshooting AT-S63 Web Browser User’s Guide for AT-9400 Stacks Troubleshooting Section II Advanced Operations Temperature Technical SpecificationsAppendix a PhysicalAgency Certifications Pin Signal10/100Base-TX Port Pinouts Property Value 100Base-FX Port SpecificationsChapter Technical Specifications Appendix B Cleaning Fiber Optic ConnectorsUsing a Cartridge-Type Cleaner 102 Using a Swab 157 Appendix B Cleaning Fiber Optic Connectors

AT-PC232/POE specifications

Allied Telesis AT-PC232/POE is a versatile and robust power-over-Ethernet (PoE) switch that effectively meets the needs of small to medium-sized networks. Designed for user-friendly operation and scalability, this switch caters to the increasing demand for power and data connectivity in various environments, from small offices to larger enterprise applications.

One of the main features of the AT-PC232/POE is its capability to deliver both data and electrical power over a single Ethernet cable. This functionality simplifies installations of network devices such as IP cameras, VoIP phones, and wireless access points, reducing cabling costs and improving site aesthetics. The switch can supply up to 15.4 watts of power per port, adhering to the IEEE 802.3af PoE standard. This enables straightforward connection to devices without needing additional power sources, making it a convenient choice for businesses looking to streamline their operational efficiency.

In terms of design, the AT-PC232/POE is compact and rack-mountable, allowing for efficient use of space in server rooms and network closets. Its fanless operation ensures quiet performance, making it suitable for noise-sensitive environments. The switch is also equipped with LED indicators that provide at-a-glance updates on power status, network activity, and port statistics.

The AT-PC232/POE utilizes advanced networking technologies such as VLAN (Virtual Local Area Network) support and QoS (Quality of Service). VLAN support allows network administrators to segment network traffic for better performance and security, while QoS capabilities prioritize critical data packets, ensuring that important applications such as video conferencing and VoIP operate smoothly without interruption.

Another significant characteristic of this switch is its management capabilities. Allied Telesis provides a web-based graphical user interface (GUI) for easy configuration and monitoring, allowing administrators to quickly set up networks and troubleshoot issues. Security features such as port security and access control lists help prevent unauthorized access and ensure that the network remains secure.

In summary, the Allied Telesis AT-PC232/POE switch combines efficient power delivery with sophisticated networking features, making it an excellent choice for businesses looking to enhance their network infrastructure. Its compact design, ease of use, and management capabilities position it as a reliable solution for modern networking demands.
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