Allied Telesis AT-8500 Series manual Network Topologies, Power Workgroup Topology

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AT-8500 Series Layer 2+ Fast Ethernet Switches Installation Guide

Network Topologies

Power

Workgroup

Topology

This section illustrates several of the network topologies you can create with the AT-8500 Series Fast Ethernet switch.

The topology shown in Figure 9 is commonly referred to as a power workgroup topology. Each workstation or end node is connected directly to a port on an AT-8524M Fast Ethernet Switch. This provides each end node with a dedicated data link to the switch for best performance and reliability. The devices can operate at either 10 Mbps or 100 Mbps.

Collapsed

Backbone

Topology

 

AT-8524MFast Ethernet Switch

MODE

STATUS

AT-8524M Fast

Ethernet Switch

Legend

 

10 Mbps

 

100 Mbps

 

Figure 9. Power Workgroup Topology

In the topology illustrated in Figure 10, an AT-8524M Fast Ethernet Switch connects together 10/100 Mbps Ethernet hubs. This type of topology is often referred to as a collapsed backbone topology. The switch functions as the focal point of the network by acting as a bridge between the different workgroups. The switch transfers an Ethernet frame from hub to hub only when the destination end node for the frame is on a different hub than the end node that originated the frame. This reduces the amount of unnecessary data traffic in each workgroup, freeing up bandwidth and improving network performance.

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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 OverviewModel Configuration Model ConfigurationsPort LEDs System LEDs Model DescriptionsShows the front and back panels of the AT-8524M switch Shows the front and back panels of the AT-8524POE switch Shows the front and back panels of the AT-8550GB switch AT-8550SP Switch Front and Back Panels 10/100Base-TX Twisted Pair Ports Port DescriptionsMaximum Distance 10/100/ 1000Base-T Twisted Pair Ports 100Base-FX Fiber Optic Ports Type of Cable Power Over Ethernet Minimum Power Maximum Power Class Gbic Module Gbic and SFP SlotsModule Expansion Slots LEDs Twisted Pair Port LEDs LED Mode Select ButtonState Description Mode FDX OFF Indicates that the port is operating at 10 or Fiber Optic Port LEDs Gbic and SFP Expansion Slot LEDs Maste RS-232 Terminal Port Power Options and Connectors AC Power Connector DC Power Connector MAC Address Table Duplex Mode Few Basics about Ethernet SwitchingBack Pressure and Flow Control Store ForwardOverview Network Topologies Power Workgroup TopologyCollapsed Backbone Topology Mixed Topology Mixed Topology Overview Installation Reviewing Safety Precautions Page Installation Selecting a Site for the Switch Maximum Planning the InstallationModel Speed Cable Type Maximum Unpacking the Switch Installing the Switch in a Rack Installation Page Removing the Expansion Slot Faceplate Installing an Optional Expansion or Stacking ModuleAT-A46 Installing an Optional Gbic Ferrules of the optical connector Bore Installing an Optional SFP Transceiver Page Cabling Twisted Pair Ports Cabling the SwitchCabling Fiber Optic Ports SC Port Transmitter Fiber Connector Cabling Expansion Modules Powering on an AC Powered Switch Page Positive, Ground, and Negative Terminals Wiring and Powering on an DC Powered Unit8mm ±1mm 31in. ±0.039in Installation Starting a Local Management Session Installation Warranty Registration Installation Twisted Pair Port Link LED is Off PWR LED is OffFiber Optic Port Link LED is Off Fault LED is On Continuously PoE Device is Not Receiving PowerCannot Establish a Local Management Session Environmental Specifications Physical SpecificationsAppendix a Safety and Electromagnetic Emissions Certifications Power SpecificationsRJ-45 Twisted Pair Port Pinouts Pin MDI SignalSignal Pin MDI Signal MDI-X SignalUnused RX- and Vport-2 TX- and Vport-2 MDI Configuration MDI-X Configuration Pinout PairAT-8516F/SC Fiber Optic Port Specifications RS-232 Terminal Port Pinouts Pin SignalPin Definition RPS Connector Port PinoutsPin 3V RS13 3.3V RS+ Dual SC Type Connector