Figure 8-6 Troubleshooting flowchart for the fault that the multicast device cannot generate
IGMP entries
Yes
Yes
Yes
Yes
Enable IGMP on
interface
Ensure that the group
is in the range of the
groups that the
interface serves
Is fault
rectified?
No
No
No
No
No
Yes
No
No
Yes
Yes
Ensure that the group
address is in the SSM
group address range
No
Yes
No
Yes
Rectify the
interface fault
No
Increase maximum of
global IGMP group
memberships on
interface or remove
limit
No
Yes
Re-plan network
deployment
No
Yes
Yes
Is fault
rectified?
Is fault
rectified?
Is fault
rectified?
Yes
Is fault
rectified?
Enable multicast and
IGMP
Is fault
rectified?
Is fault
rectified?
Is fault
rectified?
Yes
Is fault
rectified?
Yes
Increase maximum
number of IGMP group
memberships in
interface or remove limit
Increase maximum
number of IGMP group
memberships on the
interface or remove limit
Seek technical support
No
Yes
Yes
Yes
Multicast device cannot
generate IGMP entries
No
No
Yes
No
Maximum
of IGMP group
memberships is limited
globally?
No
Are The
Number of Entries And
That of interfaces below the
upper limit?
No
Maximum
number of IGMP group
memberships limited on
interface?
Maximum
of group memberships limited
in current instance?
Is range of groups
that hosts can join limited on
interface?
Is IGMP
enabled on interface?
Is Interface in Up state?
Is multicast enabled?
Multicast
Group in SSM group address
range?
End
Huawei AR2200-S Series Enterprise Routers
Troubleshooting 8 Multicast
Issue 01 (2012-01-06) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
227
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