04-Troubleshooting

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Chapter 4  Troubleshooting

4.1  Troubleshooting the Power System

Symptoms:

POWER LED cannot light.

Solution:

Check that:

l           The power switch of the router is turned on.

l           The switch of the power source is turned on.

l           The power cord of the router is properly connected.

l           The correct power source is used.

 

  Caution:

Do not plug/unplug the power cord when power is being supplied. If POWER LED is still OFF after you check against the items listed above, contact your agent.

 

4.2  Troubleshooting the Configuration System

If the router is operating normally after it is powered on, it displays the start-up information on the console terminal. If the configuration system has faults, it displays illegible characters or nothing at all.

Symptoms 1:

Nothing is displayed on the terminal screen after the router is powered on.

Solution:

Step 1: Check that:

l           The power system is correctly working.

l           The console cable is connected correctly.

Step 2: Check the console cable and the terminal (such as the HyperTerminal) parameter settings.

Symptoms 2:

Illegible characters are displayed on the console terminal after the router is powered on.

Solution:

Make sure you have set on your terminal (HyperTerminal):

Baud rate = 9600

Databit = 8

Parity check = none

Stopbit = 1

Flow control = none

Terminal emulation = VT100

Reconfigure the parameters if their values are different.

4.3  Recovering/Replacing a Lost Boot Rom Password

If the Boot Rom password of the router is lost, contact the local agent of H3C for help.