ONT detection problem in OLT Huawei

Run the display port info command to query the minimum logical reach (Min distance) and maximum logical reach (Max distance) configured for the PON port. It is found that the actual distance between the ONU and OLT exceeds the ranging compensation distance.


The actual physical distance between the OLT and ONT ≈ (maximum distance + minimum distance)/2.


huawei(config-if-gpon-0/1)#display port info

{ portid<U><0,15> }:0

Command:

display port info 0

--------------------------------------------------------

F/S/P 0/1/0

Min distance(km) 0

Max distance(km) 20

.......

--------------------------------------------------------

Hello, friend!

If you have checked the ODF and optical splitter faults and the ONT can receive optical signals but the ONT still fails to go online, you can check the distance between the OLT and the ONT.

Fault Scope: A single ONU or some ONUs connected to an OLT fail to be auto discovered by the OLT.

Possible Cause: The actual distance between the ONU and OLT exceeds the ranging compensation distance configured on the OLT.

Run the display port info command to query the minimum logical reach (Min distance) and maximum logical reach (Max distance) configured for the PON port. It is found that the actual distance between the ONU and OLT exceeds the ranging compensation distance.

The actual physical distance between the OLT and ONT ≈ (maximum distance + minimum distance)/2.

huawei(config-if-gpon-0/1)#display port info

{ portid<U><0,15> }:0

Command:           

display port info 0   

-------------------------------------------------------- 

F/S/P                                      0/1/0

Min distance(km)                          0

Max distance(km)                          20

.......

--------------------------------------------------------

Thanks!