Meanings of Router Status LEDs
Power (green): Continually lit if the router is receiving power. (This
is the same as ~Line On on the front.)
Self-test (green) LED: Lights while the self-test is running (about
one minute). This occurs when the router has just been powered on or a
reset is in progress. If an error is found during the self-test, this LED
remains lit and the Fault LED (and possibly a Net Fail LED) will also
light. This LED also remains lit during the configuration clearing
procedure (page 2-14).
Fault (amber)LED: Lights if a failure has occurred either during a
self-test or during operation. (This LED is duplicated on the front panel.)
During self-test: If the Fault LED is lit, the router is faulty and must
be replaced. Refer to chapter 3, ‘‘Troubleshooting’’, for details.
During operation of the router: If the Fault LED is lit, but none of the
Net Fail LEDs are lit, there has been a software failure. Press the
Reset button to reset the router, or boot the router if it is not
configured to reboot automatically. (Refer to table 3-2 in chapter 3,
‘‘Troubleshooting’’, for details.) If Fault is lit and any Net Fail LED is
also lit, follow the instructions for the Net Fail LEDs on the page 2-9.
Fault is always lit while the Reset button is pressed.
Router Operation
Interpreting Back-Panel LEDs
2-8
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