Allied Telesis GS900/5E manual Collapsed Backbone

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Collapsed Backbone

AT-GS900/16, AT-GS900/24 Fanless Gigabit Ethernet Switches Installation Guide

In the topology illustrated in Figure 5, an AT-GS900/16 switch connects Fast Ethernet switches that have Gigabit Ethernet uplinks. This type of topology is often referred to as a collapsed backbone topology. The switch functions as the focal point of the network and transfers an Ethernet frame between the Fast Ethernet switches only when the destination end-node for the frame is on a different switch 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.

AT-GS900/16 Fanless Gigabit Ethernet Switch

1281

Fast Ethernet

Switches with

Gigabit Uplinks

 

 

 

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1

 

 

 

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Legend

10 Mbps

100Mbps 1000 Mbps

Figure 5. Collapsed Backbone - Hub Topology

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Contents Installation Guide Page Electrical Safety and Emissions Standards Translated Safety Statements Contents Contents Preface Symbol Meaning Description Safety Symbols Used in this DocumentWhere to Find Web-based Guides Contacting Allied Telesis WarrantyManagement Software Updates Chapter Product DescriptionStandards FeaturesFront Panels ComponentsTwisted Pair Ports Hardware Feature DescriptionMaximum Distance AC Power Connector MAC Address Table Ethernet Switching BasicsDuplex Mode Store Forward Network Topologies Power Workgroup TopologyCollapsed Backbone Installation Reviewing Safety Precautions Selecting a Site for the Switch Speed Type of Cable Maximum Planning the InstallationUnpacking the Switch Installing the Switch on a Table or Desktop Installation Attaching the brackets to the sides of the switch Installing the Switch on a Wall1303 Page Attaching Rackmounting Brackets Installing the Switch in a Rack606 Installation Cabling the Switch Powering On the Switch Troubleshooting Physical Specifications Technical SpecificationsEnvironmental Specifications Power SpecificationsSafety and Electromagnetic Emissions Certifications RJ-45 Twisted Pair Port ConnectorsCompliance Standards Pin Signal
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