MSAN UA5000 Cases Chapter 3 GPON FTTx Cases
Confidential Information of Huawei. No Spreading without Permission
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10 3125 74126 6104
11 6249 148241 12207
12 12499 296483 24414
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Current traffic suppression index of broadcast : 7
Current traffic suppression index of multicast : 7
Current traffic suppression index of unknown unicast : 7
MA5680T(config-if-giu-0/19)#
3. Replace the ONT with an ONT of the same type. It is found that the new ONT can
receive the broadcast traffic. Then, check the versions of the ONTs.
Version of the ONT before the replacement: V100R001C02B016
Version of the ONT after the replacement: V100R001C02B020
Later, it is confirmed that in the V100R001C02B016 version, the broadcast traffic is
totally suppressed.
Handling Proces
s:
Update the version of the 813e to V100R001C02B020. It is found that the problem is
solved.
Suggestions and
Summary:
Null
3.21 All ONTs (HG850s) Connected to a PON Port Get Online and Offline Frequently
Because One of the ONTs Connected to the PON Port Is Faulty
Title:
All ONTs (HG850s) Connected to a PON Port Get Online and Offline Frequently
Because One of the ONTs Connected to the PON Port Is Faulty
ID: SE0000374105
Information
Type :
Troubleshooting Cases Quality Level:
C
Product Family:
Optical Access
Product:
MA5680T
Fault Type:
ONT terminal
Keywords: ONU exception, ODN, get online and offline frequently
Permission
Level:
01Huawei Engineers Permission
Phenomenon De
scription:
In an office, all ONUs (HG850s) connected to a PON port of the MA5680T providing the
GPON service get online and offline frequently. The customer checks the optical path on
site. The optical path is normal. Replace one of the ONUs that get online and offline
frequently. The fault persists. The ONU after replacement and other ONUs still get online
and offline frequently.
Alarm Informatio
n:
! EVENT WARNING 2008-05-21 14:22:49 ALARM NAME :ONU in down state alarm
PARAMETERS :FrameID: 0, SlotID: 3, PortID: 3, ONUID: 2
! EVENT WARNING 2008-05-21 14:22:49 ALARM NAME :ONU in up state alarm
PARAMETERS :FrameID: 0, SlotID: 3, PortID: 3, ONUID: 2
Cause Analysi
s:
ONUs connected to other PON ports of the same GPBC board are normal and the fault
is not caused by the optical path. Therefore, the possible causes of the fault are as
follows:
1. The PON port is faulty.
2. The optical splitter is faulty.
3. The ONU is faulty.
Handling Proces
s:
1. Remove optical fibers that connect optical splitters of the first level to all optical
splitters of the second level and directly connect the ONUs to the optical splitters of the
first level. The ONUs go online normally and are stable.
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