Using the BayStack 450 10/100/1000 Series Switch

Fail-Safe Stack Application

Figure 1-9 shows an example of eight BayStack 450 switches that are stacked together as a single managed unit. If any single unit in the stack fails, the remaining stack remains operational, without interruption.

As shown in Figure 1-9, the Accelar 1100 switch is used as a backbone switch, connecting to the BayStack 450 switch with an optional gigabit (1000BASE-SX) MDA for maximum bandwidth. This configuration uses optional BayStack 400-ST1 Cascade Modules to connect the switches in the fail-safe stack.

For an overview of the fail-safe stacking feature that is available for the BayStack 450 switches, see “ Stack Operation” following this section.

BayStack 450-24T switches

F

Accelar switch

Key

100 Mb/s

1000 Mb/s

Figure 1-9. Fail-Safe Stack Example

Up to

24 users

Up to

28 users

Up to

28 users

Up to

28 users

Up to

28 users

Up to

28 users

Up to

28 users

Up to

28 users

BS45008A

1-22

302401-D Rev 00

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Nortel Networks 450 manual Fail-Safe Stack Application, Fail-Safe Stack Example