Fast Ethernet

Stations (14)

FN100-16TX

Facility Hub

2094n23

Figure 7-3. Fast Ethernet High-End Department Solution

Fast Ethernet as a Backbone

Due to the high throughput provided by Fast Ethernet, it is conceivable that the technology could be used as a backbone solution to interconnect a series of workgroups. The Fast Ethernet switch will act as a device collapsed backbone for the network. The design process is exactly the same as that depicted above, in which connections were designed between multiple workstations over a Fast Ethernet switch, but the connections in the backbone solution are made to workgroups rather than individual stations.

NOTE

Due to the short maximum distances of Fast Ethernet segments, Fast Ethernet is sometimes unsuitable for interconnecting workgroups in a widely-dispersed enterprise network.

Design Example

As an example of the methods used to design a switched Fast Ethernet backbone network, let us examine the design process of a Network Designer at a small magazine publishing house who intended to replace the existing Ethernet backbone (shared thick coaxial cable) in the facility depicted in Figure 7-4with a device collapsed backbone using switched Fast Ethernet.

Fast Ethernet Workgroup Design

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Cabletron Systems bridges, switches manual Fast Ethernet as a Backbone, Fast Ethernet High-End Department Solution