Alarm

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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Dying gasp Alarm GPON Huawei ONTi (DGi)

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Dying gasp Alarm GPON ONTi (DGi)

When ONT goes offline then Huawei OLT receives a message from ONT then system generates dying gasp alarm. If power cord remove from ONT without power off ONT device or Load shedding causes electricity power go away then system generates dying gasp alarm.

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Attribute:

Alarm ID Alarm Severity Alarm Type
0x2e11a00b Minor Fault
Dying gasp Alarm GPON Huawei ONTi (DGi)
Dying gasp Alarm GPON Huawei ONTi (DGi)

Parameters:

Name Meaning
FrameID The ID of the shelf where the alarm is generated.
SlotID The ID of the slot where the alarm is generated.
PortID The ID of the port where the alarm is generated.
ONT ID The ID of the ONT where the alarm is generated.
Equipment ID The ID of the equipment where the alarm is generated.
Description of the ONT(Only for NMS) The description of the ONT (only available on the NMS), which can be used to distinguish different ONTs.

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