Installation and Reference Guide (J3210A, J3212A, J3200A, J3202A, J3204A) 1996-08

5-1

Troubleshooting

This chapter describes how to troubleshoot your Management Module and

how to troubleshoot your stack of hubs for cabling problems. This chapter

covers these topics:

■ using the problem/solution table

■ IP configuration errors

■ diagnostic tests

■ clearing a password for the ASCII console

Use the following table to diagnose the problem with your Management

Module:

Problem Solution

How do I reset the stack of hubs? Either:

Push the reset button on the primary

Management Module.

Select stack reset from the ASCII console or

HP AdvanceStack Assistant.

The Segment Display button doesn’t

light up the 1, 2, 3 or 4 Segment LEDs.

You probably have two Management Modules

installed and you are pushing buttons on the

backup Management Module. Press the

buttons on the module where the Active LED is

on.

None of the Management Module LEDs

are on.

Either:

- You are looking at the backup Management

Module. This is normal.

- Module is loose. Make sure the Module is fully

inserted and screws are tightened.

The Segment Display button lights up

all of the port LEDs on Segment 1.

All of your users are on the same segment. If

desired, move users to the other segments by

using HP AdvanceStack Assistant or the ASCII

console.

I pushed the Segment Display button.

Where do I look to see which ports are

on segment 1?

Instead of the port LEDs showing link status, the

port LEDs for a selected segment will be lit.