Meaning of the alarm indicator on a board

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The alarm indicator on the front panel of the board indicates the running status and alarm status of the board.

Other related questions:
What do WLAN indicators of the AR router mean
The WLAN indicator status and their meanings are as follows: -If the WLAN indicator is steady on, the radio interface is physically Up but is not transmitting traffic. -If the WLAN indicator is blinking, the radio interface is physically Up and is transmitting traffic. A higher traffic rate indicates a higher blinking frequency. -If the WLAN indicator is off, the radio interface is physically Down.

Indication of the red alarm indicator on the Metro 1000
If the alarm indicator on the Metro 1000 is steady red, a critical alarm is generated. You need to check it on the NMS.

Cause why the alarm indicator of the OTU board is red even after the HARD_ERR alarm is suppressed
Question: An OTU board on an OSN 6800 NE reports a HARD_ERR or HARD_BAD alarm. After the alarm is suppressed on the T2000, the board indicator on the T2000 is still red. When other alarms are suppressed and there is no additional alarm on the board, the board indicator is green. Analysis: The HARD_ERR and HARD_BAD alarms are at the hardware maintenance level. In general, the alarms indicate board hardware faults and the boards need to be replaced. Therefore, the alarm indicator is still on even when the HARD_ERR and HARD_BAD alarms are suppressed to instruct onsite engineers to replace the boards. Root cause: None Answer: The OSN 6800 is designed in this manner to instruct onsite engineers to replace faulty boards.

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