Troubleshooting Igmp Snooping - Huawei Quidway S5600 Series Operation Manual

Operation Manual – Multicast Protocol
Quidway S5600 Series Ethernet Switches-Release 1510
[SwitchB-GigabitEthernet1/0/1] port hybrid vlan 2 10 untagged
[SwitchB-GigabitEthernet1/0/1] port hybrid pvid vlan 2
[SwitchB-GigabitEthernet1/0/1] quit
# Define GigabitEthernet 1/0/2 as a hybrid port, add the port to VLAN 3 and VLAN 10,
and configure the port to exclude VLAN tags in its outbound packets of VLAN 3 and
VLAN 10, and set VLAN 3 as the default VLAN of the port.
[SwitchB] interface GigabitEthernet 1/0/2
[SwitchB-GigabitEthernet1/0/2] port link-type hybrid
[SwitchB-GigabitEthernet1/0/2] port hybrid vlan 3 10 untagged
[SwitchB-GigabitEthernet1/0/2] port hybrid pvid vlan 3
[SwitchB-GigabitEthernet1/0/2] quit

2.5 Troubleshooting IGMP Snooping

Symptom: Multicast function does not work on the switch.
Solution:
The reason may be:
1) IGMP Snooping is not enabled.
Use the display current-configuration command to check the status of IGMP
Snooping.
If IGMP Snooping is disabled, check whether it is disabled globally or on the
corresponding VLAN. If it is disabled globally, use the igmp-snooping enable
command in both system view and VLAN view to enable it both globally and on the
corresponding VLAN at the same time. If it is only disabled on the corresponding
VLAN, use the igmp-snooping enable command in VLAN view only to enable it
on the corresponding VLAN.
2) Multicast forwarding table set up by IGMP Snooping is wrong.
Use the display igmp-snooping group command to check if the multicast
groups are expected ones.
If the multicast group set up by IGMP Snooping is not correct, contact your
technical support personnel.
Continue with solution 3) if the second step does not work.
If it is not the reason, the possible reason may be:
3) Multicast forwarding tables set up by IGMP Snooping is wrong.
Use the display mac-address vlan command to check whether the MAC
multicast forwarding table set up in the vlan-id VLAN view is consistent with the
one set up by IGMP Snooping.
If they are not consistent, contact your technical support personnel.
Huawei Technologies Proprietary
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Chapter 2 IGMP Snooping Configuration