Using the BayStack 450 10/100/1000 Series Switch

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.

 

Before

After

 

 

Server

 

10BASE-T hubs

BayStack 450-24T

 

switch

 

 

Up to 22

Server

 

users

 

 

 

 

Up to 23

 

 

users

 

 

Up to 23

 

 

users

 

 

Up to 23

To

Up to

users

To

Network

88 users

Network

Center

 

Center

 

 

Key

 

Up to 23

 

users

 

 

10 Mb/s

 

 

100 Mb/s

 

 

200 Mb/s

 

- Four sets of 23 users; each set shares 10 Mb/s

 

 

(10/23 Mb/s per user)

- 88 users share 10 Mb/s (10/88 Mb/s per user)

- Addition of 22 users; each with dedicated

- Server bottleneck (10 Mb/s bandwidth)

100 Mb/s bandwidth

- Network center bottleneck (10 Mb/s bandwidth)

- Server with dedicated 100 Mb/s bandwidth

-Total of 88 users

 

- Network center with dedicated 100 Mb/s full-duplex bandwidth

 

 

(200 Mb/s bidirectional)

 

 

- Total of 114 users

 

 

BS45006A

Figure 1-7. BayStack 450 Switch Used as a Segment Switch

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Nortel Networks manual Segment Switch Application, BayStack 450 Switch Used as a Segment Switch