Allied Telesis AT-PC232/POE manual Operating Modes, Link Test Mode MissingLink Mode

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AT-PC232/POE Media Converter Installation Guide

Operating Modes

Link Test Mode

MissingLink Mode

The AT-PC232/POE Media Converter supports these operating modes:

ˆ“Link Test Mode,” next

ˆ“MissingLink Mode” on page 21

ˆ“Smart MissingLink Mode” on page 22

Contrary to its name, the Link Test operating mode is not a diagnostic utility. Instead, it uses the Link LEDs to display the current states of the ports. A port’s Link LED will be on when the port has established a link to a network device and it will be off when the port does not have a link to a network device.

This operating mode is typically used when the network devices connected to the ports of the media converter cannot take advantage of the features of the MissingLink mode, or when you want to use the Link LEDs to troubleshoot a network problem. This operating mode is also useful after the installation of the media converter to verify whether or not the ports on the unit have established links to their network devices.

The MissingLinkTM mode allows the two ports on the media converter to share their “link” status with each other. If one of the ports is unable to establish a link with its network device or loses the link, this operating mode disables the transmitter on the other port. This action notifies the network device connected to the port that there is a loss of the link on the other port. Without the MissingLink mode, a network device connected to a port would be unaware of a loss of a link on the companion port, because its link to the media converter would be unaffected. To explain it another way, the MissingLink mode will not allow a port to form a link with its network device unless the other port on the media converter can also establish a link with its device.

When the link is reestablished on a port, the MissingLink mode automatically reactivates the transmitter on the companion port so that the two network devices can again forward traffic to each other through the two ports of the media converter.

The value to this type of fault notification is that some network devices, such as managed Fast Ethernet switches, can respond to the loss of a link on a port by performing a specific action. For example, the network device might send a trap to a network management station, and so alert the network administrator of the problem. Or, if the device is running a spanning tree protocol, it might seek a redundant path to a disconnected node.

Here is an example of how the MissingLink mode works. Assume that the two ports on a media converter are connected to two Fast Ethernet

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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 Type of Connector Port Speed Duplex Mode 10/100Base-TX Twisted Pair PortMaximum 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 PhysicalPin Signal Agency Certifications10/100Base-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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