collapsed backbone


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collapsed backbone

A network configuration that provides a backbone in a centralized location, to which all subnetworks are attached. A collapsed backbone is implemented in a router or switch that uses a high-speed backplane that can handle the simultaneous traffic of all or most of its ports at full wire speed.


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The issue here, of course, is whether a virtual collapsed backbone is best or if an integrated routing/switching backbone is needed.
But a physical collapsed backbone is subject to the limitations of shared media.
It suits campus backbone, collapsed backbone and stand-alone environments.
As bandwidth demand increased, the company installed high-performance NETBuilder II1 bridge/routers as the collapsed backbone.
The switch can serve as a concentrator for a wiring closet, or in a collapsed backbone in small office/branch office LANs.