huawei(config)#terminal monitor
huawei(config)#terminal debugging
huawei(config)#debugging igmp user
2. Order the program again. Then, go to Step 4.
NOTE
After the preceding steps are performed, run the following commands to disable the debugging function.
huawei(config)#undo debugging igmp
huawei(config)#undo terminal debugging
huawei(config)#undo terminal monitor
Step 4 Locate the fault according to the receiving condition of the report packet and the fault scope.
l If the ONU displays a prompt message of the program, the ONU receives the report packet.
In this case, go to Step 5.1.
l If the ONU does not display a prompt message of the program, the ONU does not receive
the report packet. In this case, locate the fault according to the fault scope.
– If all users in the MVLAN fail to go online, go to Step 5.2.
– If a single user or some users in the MVLAN fail to go online, go to Step 6.
Step 5 Check multicast configurations of the ONU.
1. If the ONU receives the report packet, find the possible cause according to judgment criteria
described in Table 5-2 and then troubleshoot the fault. Then, go to Step 5.3 to check
whether the fault is rectified.
Table 5-2 Incorrect multicast configurations of the ONU
Possibl
e
Cause
Judgment Criterion Troubleshooting Method
The
maximu
m
multica
st
bandwi
dth of
the user
is lower
than the
required
bandwi
dth of
the
ordered
progra
m.
If one of the following symptoms
occurs, the fault is because the
maximum multicast bandwidth of the
user is lower than the required
bandwidth of the ordered program.
l The ONU receives the report packet
and displays "the user fails to pass
bandwidth CAC".
l The maximum bandwidth of the
user is lower than the bandwidth of
the ordered program by running the
display igmp user user-index
command to query the maximum
bandwidth (User MaxBandWidth)
of the user and running the display
igmp program name command to
query the bandwidth (Bandwidth)
of the ordered program.
NOTE
If User MaxBandWidth is no-limit, the
multicast bandwidth of the user is not
limited.
Choose one of the following
troubleshooting methods
according to the purchased service
type:
l Notify the user of ordering
another program (whose
bandwidth is lower than the
maximum bandwidth of the
user) because the bandwidth is
insufficient and the program
cannot be watched.
l Increase the user bandwidth
and notify the user of ordering
the program again.
NOTE
Run the igmp user modify user-
index max-bandwidth command to
modify the maximum bandwidth of
the user to ensure that it is higher than
the program bandwidth.
SmartAX MA5612 Multi-service Access Module
Maintenance Guide
5 Troubleshooting Services Transmitted Through a GPON
Port
Issue 01 (2012-07-25) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
138
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