BayStack 450 10/100/1000 Series Switches302401-D Rev 00 1-23Stack OperationBayStack 450 switches that are configured with BayStack 450 software versionV1.1.0 or later provide fail-safe stackability when you install the optionalBayStack 400-ST1 Cascade Module. You can connect up to eight switches toprovide uninterrupted connectivity for up to 224 ports (see “Fail-Safe StackApplication” on page 1-22). The entire stack is manageable as a single unit.Installation instructions are provided with the BayStack 400-ST1 Cascade Module(see your Nortel Networks sales representative for ordering information).BayStack 400-ST1 Cascade ModuleIf you need to upgrade your BayStack 450 switches, refer to the upgradeinstructions provided in the Installing the BayStack 400-ST1 Cascade Moduleguide. You must upgrade the switch before installing the BayStack 400-ST1Cascade Module. The front-panel components of the BayStack 400-ST1 CascadeModule are shown in Figure 1-10.Component descriptions follow the figure.Figure 1-10. BayStack 400-ST1 Front-Panel ComponentsNote: The BayStack 400-ST1 Cascade Module will not operate withBayStack 450 switches that are configured with BayStack 450 softwareversions earlier than version V1.1.0.Cascade A Out Cascade A InUnit SelectBase1 = Blank connectors (unused)2 = Cascade A Out connector3 = Unit Select switch4 = Cascade A In connector3BS0031B412kombk.book Page 23 Tuesday, June 29, 1999 3:25 PM
