Troubleshooting Approaches - HP AdvanceStack 10Base-T Hub-12 Installation And Reference Manual

Troubleshooting
This chapter describes how to diagnose and resolve operating problems
with the HP AdvanceStack 10Base-T Hubs.
This chapter describes these topics:
basic troubleshooting approaches
diagnosing with the LEDs
installation, cabling, and unusual network activity problems
diagnostics tests
Additionally, certain diagnostic functions useful for troubleshooting are
contained in the HP Stack Manager software. These functions are
described in chapter 1, "Installing and Using HP Stack Manager" and in
the software's online help system. Some of these diagnostic functions
are available only to hubs that have an HP Ethernet SNMP Module
(HP J2603A or B) installed.

Troubleshooting Approaches

There are three primary ways to diagnose hub problems:
By checking the LEDs on the front of the hub as described in
"Diagnosing with the LEDs" later in this chapter.
By visually inspecting the unit and all its connections as described in
the "Installation Problems" and "Cabling Problems" sections later in
this chapter.
By using the HP Stack Manager's diagnostic functions described in
chapter 2, "Installing and Using HP Stack Manager", and in the
software's online help system.
Alternatively, if you don't have a Windows-capable PC, you can use
an ASCII terminal or PC running a terminal emulator to monitor hub
status and run diagnostic tests. For this operation, the hub, or one of
the hubs in the stack, must have an HP Ethernet SNMP Module
installed. See the module's documentation for more information on
the ASCII terminal interface.
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