Dear friend!
The ETH_R_FLOW_OVER_GEN alarm indicates that the traffic received at an Ethernet port exceeds the expected traffic to a median extent.
Possible causes and solutions:
Cause 1: Received port bandwidth utilization exceeds the threshold of bandwidth utilization (the receive port bandwidth usage threshold 2).
1. On the NCE, check information about the ETH_R_FLOW_OVER_GEN alarm to identify the board that reports the alarm.
2. Check whether received port bandwidth utilization exceeds the threshold of bandwidth utilization (the receive port bandwidth usage threshold 2). If yes, increase the threshold of bandwidth utilization of the port to a value that is higher than the actually received port bandwidth utilization. Then, check whether the alarm is cleared.
3. If the bandwidth utilization has reached the limit and the port has no spare bandwidth. Decrease the data flow transmitted from the opposite NE to avoid packet loss and check whether the alarm is cleared.
Cause 2: The service loop causes the broadcast storm.
1. Disconnect the physical link loop.
2. On the NCE, enable the Loopback Check and Loopback Port Shutdown functions for all Ethernet interfaces.
3. Optional: For the E-LAN services, configure the split-horizon group on all the NEs, and enable the broadcast storm suppression function on all the UNI interfaces.
4. Reconnect the physical link loop.
More about the ETH_R_FLOW_OVER_GEN alarm.
For the second alarm, you're talking about IN_PWR_ABN.
Possible Causes
Cause 1: The threshold of the optical power is not set properly.
Cause 2: The fiber connector is loose or dirty.
Cause 3: The model of the selected optical module is incorrect.
Cause 4: The board at the local end is faulty.
Cause 5: The board at the opposite end is faulty.
At present, the most likely cause is cause 2. Other optical fibers are loose when you replace the board.
More about the IN_PWR_ABN alarm.
Thank you!
