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.
In a frame-based virtual collapsed backbone, workgroup- level frame switches replace (or assist) overtaxed shared-media hubs and ease desktop bottlenecks.
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.
Wiring closet, collapsed backbone departmental switches -- with high or
2-Gbps backplane capacity and a large buffer size of 32 MB, the StellarSwitch SGX8216 is suitable for demanding applications such as deployment as an enterprise collapsed backbone.
For high-performance routing of legacy protocols such as AppleTalk, Vines, DECnet, and SNA, the Accelar routing switch can be connected to servers and clients creating multiple VLANs that are ultimately terminated in the BN router to form a collapsed backbone.
Completed this April, Bates' new network is based on a collapsed backbone comprised of two redundant, CoreBuilder 9000 enterprise switches.