Operation Manual – Multicast Protocol
Quidway S3900 Series Ethernet Switches-Release 1510 Chapter 2 IGMP Snooping Configuration
Huawei Technologies Proprietary
2-17
[SwitchB-vlan10] igmp-snooping enable
[SwitchB-vlan10] quit
# Define Ethernet 1/0/10 as a hybrid port, add the port to VLAN 2, VLAN 3 and VLAN 10,
and configure the port to include VLAN tags in its outbound packets of VLAN 2, VLAN 3
and VLAN 10.
[SwitchB] interface Ethernet 1/0/10
[SwitchB-Ethernet1/0/10] port link-type hybrid
[SwitchB-Ethernet1/0/10] port hybrid vlan 2 3 10 tagged
[SwitchB-Ethernet1/0/10] quit
# Define Ethernet 1/0/1 as a hybrid port, add the port to VLAN 2 and VLAN 10, and
configure the port to exclude VLAN tags from its outbound packets of VLAN 2 and
VLAN 10 and set VLAN 2 as the default VLAN of the port.
[SwitchB] interface Ethernet 1/0/1
[SwitchB-Ethernet1/0/1] port link-type hybrid
[SwitchB-Ethernet1/0/1] port hybrid vlan 2 10 untagged
[SwitchB-Ethernet1/0/1] port hybrid pvid vlan 2
[SwitchB-Ethernet1/0/1] quit
# Define Ethernet 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 Ethernet 1/0/2
[SwitchB-Ethernet1/0/2] port link-type hybrid
[SwitchB-Ethernet1/0/2] port hybrid vlan 3 10 untagged
[SwitchB-Ethernet1/0/2] port hybrid pvid vlan 3
[SwitchB-Ethernet1/0/2] 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.
z Use the display current-configuration command to check the status of IGMP
Snooping.
z 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.
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