Download Installation and Reference for the BayStack 150

8931021.BK Page 9 Thursday, August 14, 1997 12:08 PM
Installation
Your stack of hubs should meet these criteria:
•
Cable connections are in place.
•
All hubs and modules are installed.
•
Power is connected to all hubs in the stack.
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The hub and any installed modules have completed their diagnostic cycle.
Checking the Diagnostic Displays
When you connect power to a hub, it performs the following diagnostic cycle:
•
The LEDs on the managed hub in the stack and then the LEDs on the
unmanaged hubs in the stack flash in two sequences before returning to
normal operation as described in Table 1-1 and Table 1-2 in Chapter 1,
“Introduction.”
•
A boot verification message is displayed if a display terminal is connected to
the communications port of a hub. For more information about connecting to
the communications port, see “Connecting to the Communications Port” in
Chapter 4, “Initializing the Network Management Module,” and Chapter 5,
“Using the Configuration Menus.”
Troubleshooting
Use the diagnostic displays to help you identify the type of problem you have;
then check the following:
•
Verify that all hubs in the stack are powered on.
•
Verify that all hubs in the stack are operating within the stack and are
not isolated.
If any hub ID displays a 0, it is isolated. Check that the cascade cable
connections follow compliance, and check the software to see that the hub
has not been isolated through the management software.
•
Verify that each cable and port connection has the correct pin assignment
and there are no loose connections.
A good link on a port is verified by the lit LED for that port.
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