IBM-AUSTRIA - PC-HW-Support    30 Aug 1999

Building a Hub Stack (8238)

1.  Mount or stack the hubs according to the following guidlines:
   •  Install no more than one mgmt hub per stack.
   •  Install the mgmt. hub at the bottom of the stack.
   •  Install up to 8 hubs (including the mgmt. hub) in a stack.

       If you stack hubs on the floor, regulatory agency safety  requirements limit the stack size to 6 hubs.

   •  Include both active and passive hubs in the stack, if desired.

2.  If you have not already done so, connect power to each hub.
3.  Use a 2-foot IntraStack cable to connect IntraStack OUT on the mgmt hub  to IntraStack IN on the next hub above in the stack.
4.  Using 2-foot IntraStack cables, continue to connect IntraStack OUT on each hub  to IntraStack IN on the next hub above in the stack.
5.  Complete the loop by using the 4-foot IntraStack cable to connect IntraStack OUT  on the top hub to IntraStack IN on the mgmt. hub.
6.  Check the LEDs to verify proper operation.
    The Stack IN and OUT LEDs on each hub:
   •  Light solid yellow until the mgmt. hub establishes contact with a hub.
   •  Then light solid green to indicate proper operation.

    For more information, refer to the section 'Interpreting Hub LEDs'.

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