Nortel Networks 1000BASE-LX, 1000BASE-SX manual Segment switch application, Network configuration

46 Chapter 2 Network configuration

Figure 6 BayStack 420 Switch used as a desktop switch

Before

10BASE-T hub

To	Up to 24 users
Network
Center
Key

10Mb/s

100Mb/s

1000 Mb/s

-23 users share 10 Mb/s (10/24 Mb/s per user)

-Network center bottleneck (10 Mb/s bandwidth)

After

BayStack 420

To	Up to 24 users
Network
Center

-24 users; each with dedicated 100 Mb/s bandwidth

-Network center with dedicated 1 Gb/s full-duplex bandwith

9996EA

Segment switch application

Figure 7 shows a BayStack 420 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.

209418-A