Router Operation
Interpreting Back-Panel LEDs
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.