Huawei SmartAX MA5612 Maintenance Manual page 60

SmartAX MA5612 Multi-service Access Module
Maintenance Guide
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Table 4-1
Table 4-1 Fault symptoms and possible causes when a multicast user is offline
Fault
Scope
MA5612
MA5612
to the
terminal
To facilitate fault report, save the results of the following steps.
Issue 01 (2012-07-25)
If the MA5612 receives the report packet, the multicast link is normal but the MA5612
fails to create a corresponding multicast entry. This is generally caused by incorrect
multicast configurations on the MA5612.
If the MA5612 does not receive the report packet, the multicast link fails. This is mainly
caused by incorrect MA5612 software configurations, faulty physical link between the
MA5612 and the terminal, and hardware faults of terminals.
describes fault symptoms and possible causes when a multicast user is offline.
Judgment Criterion
The MA5612 receives the
report packet.
The MA5612 does not
receive the report packet
and all users in the
MVLAN fail to go online.
The MA5612 does not
receive the report packet
and a single user fails to go
online.
NOTE
Faults can be located according to specific scenarios because fault scopes are different for deployment and
routine operation and maintenance.
l If the fault occurs during deployment, check initial configurations of the hardware and the software.
l If a multicast user fails to go online during O&M, check only the hardware because the software
configuration of a user is generally not modified in this scenario. Hence, if the status of a user changes
from normal to abnormal, it is generally caused by hardware failures. If a multicast link failure occurs
after a new user is added or an existing user is modified, check whether the configuration is correct.
CAUTION
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4 Troubleshooting Services Transmitted Through a GE Port
Possible Cause
l The program ordered is not in the MVLAN to
which the multicast user belongs.
l No upstream port is configured in the MVLAN
to which the multicast user belongs.
l The multicast user does not have the
permission to watch the program.
l The maximum multicast bandwidth of the user
is lower than the required bandwidth of the
ordered program.
l The multicast user does not have the
permission to order certain types of programs
(such as HDTV).
The IGMP function of the MVLAN is disabled.
l The hardware of the port on the MA5612 is
faulty.
l The set-top box (STB) is faulty.
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