GPON

0x2e112006 The loss of frame of ONTi (LOFi) occurs

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0x2e112006 The loss of frame of ONTi (LOFi) occurs Today i will discuss about 0x2e112006 The loss of frame of ONTi (LOFi) occurs alarm. System generates this alarm when the GPON port receives consecutive invalid delimiters from the ONT. [boxads] Attribute: Alarm ID Alarm Severity Alarm Type 0x2e112006 Warning Fault Impact on the System: The … Read more

Loss of GEM channel delineation (LCDGi) occurs

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Loss of GEM channel delineation (LCDGi) occurs: Today i will discuss about the loss of GEM channel delineation (LCDGi) occurs alarm. System generates this alarm when delimitation of the GEM frame header is incorrect. The OLT detects HEC check errors of the GEM header in consecutive frames and the ONT goes offline. [boxads] Attribute Alarm ID … Read more

Optical module fault Alarm Huawei OLT

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Optical module fault Alarm Huawei OLT:

Today I will discuss Last down cause: Optical module fault alarm. When you connect a non brand SFP or SFP not match with your OLT version then OLT display Optical module fault Alarm. I face a problem, when i connect a new SFP in H805GPFD board then 0-7 port SFP is working but 8-15 port was not working. When we connect NeoPhotonics Class B+ SFP then it work fine. bellow are the both status.

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Unsupported SFP Status:

NMC_Huawei_OLT02(config-if-gpon-0/0)#display port state 8
—————————————————————————-
F/S/P                        0/0/8
Optical Module status        Online
Port state                   Offline
xPON MAC chipset state       Normal
Last down cause              Optical module fault
Last up time                 09/12/2015 15:31:57+06:00
Last down time               09/12/2015 15:40:47+06:00
Laser state                  Failed
Available bandwidth(Kbps)    1239040
Temperature(C)               –
TX Bias current(mA)          –
Supply Voltage(V)            –
TX power(dBm)                –
Illegal rogue ONT            –
Max rate(Kbps)               2500000
Max Distance(Km)             20
Wave length(nm)              1490
Fiber type                   Single Mode
  Signal detect                Failed
TX fault                     Normal
Identifier                   SFP
Ext.Identifier               GBIC/SFP function is defined by serial ID only
Connector                    SC
Encoding                     NRZ
Length(9¦Ìm)(km)             20.0
Length(50¦Ìm)(m)             –

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Basic Layout of Huawei OLT

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Basic Layout of Huawei OLT Today i will discuss about Basic Layout of Huawei OLT. Bellow are the details…. [boxads] Basic Layout: Chassis: bundled sales, not sold separately. MPU: generally double master, one for main and one for standby, SCUN, MCUD (MA5608T) are common used. Power Plate: generally dual power, one for main and one … Read more