Segment switch application, Segment switch application -20, Figure 1-7 – Nortel Networks 450 User Manual

Page 46: Baystack 450 switch used as a segment switch -20

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Using the BayStack 450 10/100/1000 Series Switch

1-20

302401-D Rev 00

Segment Switch Application

Figure 1-7

shows a BayStack 450-24T switch used as a segment switch to

alleviate user contention for bandwidth and eliminate server and network
bottlenecks. Before segmentation, 88 users had a total bandwidth of only 10 Mb/s
available. After segmentation, 92 users have 40 Mb/s, four times the previous
bandwidth, while adding 22 dedicated 100 Mb/s connections. This configuration
can be extended to add more segments without degrading performance.

Figure 1-7.

BayStack 450 Switch Used as a Segment Switch

Server

Up to

88 users

To

Network

Center

Key

10 Mb/s
100 Mb/s
200 Mb/s

BayStack 450-24T
switch

10BASE-T hubs

Before

After

Server

Up to 22

users

Up to 23

users

To

Network

Center

BS45006A

Up to 23

users

Up to 23

users

Up to 23

users

- 88 users share 10 Mb/s (10/88 Mb/s per user)
- Server bottleneck (10 Mb/s bandwidth)
- Network center bottleneck (10 Mb/s bandwidth)
-Total of 88 users

- Four sets of 23 users; each set shares 10 Mb/s
(10/23 Mb/s per user)
- Addition of 22 users; each with dedicated
100 Mb/s bandwidth
- Server with dedicated 100 Mb/s bandwidth
- Network center with dedicated 100 Mb/s full-duplex bandwidth
(200 Mb/s bidirectional)
- Total of 114 users

kombk.book Page 20 Tuesday, June 29, 1999 3:25 PM

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