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SmartStack STS16-20D/STS16-20R Token Ring Switches Installation and User Guide Preparing for Installation
Sample Uses of the SmartStack STS16-20RM Family
Switches
The Cabletron Systems SmartStack STS16-20D/STS16-20R switches allow you to
increase the performance of the network by providing dedicated bandwidth to
individual workstations. You will typically deploy SmartStack STS16-20D/
STS16-20R
as a second step of migration from a hierarchical Token Ring network
consisting of a backbone segment and workgroup segments towards a fully
switched network:
•
Step 1 of the migration involves redesign of the backbone by replacing a shared
16 Mbps Token-ring backbone with a switched backbone utilizing SmartStack
STS16-20RM or SmartStack STS16-20R. The backbone usually serves as
interconnection of the workgroup segments and the server farm segment.
•
Step 2 of the migration increases the performance of the network by providing
dedicated full-duplex 16 Mbps bandwidth to individual workstations utilizing
SmartStack STS16-20D/STS16-20R switches
.
Figures 11, 12, 13 and 14 illustrate the migration steps. Figure 11 shows a typical
3-layer network design built with source-routing bridges. Figure 12 shows how the
backbone is optimized using SmartStack STS16-20RM or SmartStack STS16-20R.
Figure 13 shows the deployment of SmartStack STS16-20RM or SmartStack
STS16-20R as segment switches while Figure 14 shows the next step where a
dedicated bandwidth is delivered to individual workstations. For such network
design SmartStack STS16-20RM provides all the flexibility needed to use fiber to
extend distances, or increase the number of ports, while SmartStack STS16-20D/
STS16-20R provides the low-cost needed for dedicated bandwidth to individual
workstations.
The SmartStack STS16-20D/STS16-20R switch is intended to increase the
network bandwidth. Replacing a shared Token Ring segment with a SmartStack
STS16-20D/STS16-20R delivers N times 16 Mbps bandwidth. For example,
replacing a shared ring with 10 users with a SmartStack STS16-20D/STS16-20R
delivers 10 times 16 Mbps—a 10-fold bandwidth increase.