H3C Technologies H3C WX3000 Series Unified Switches User Manual

Page 444

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44-14

To do…

Use the command…

Remarks

Enter system view

system-view

Enable IGMP Snooping

igmp-snooping enable

Enter VLAN view

vlan

vlan-id

Enable IGMP Snooping

igmp-snooping enable

Required

Enable multicast VLAN

service-type multicast

Required

Return to system view

quit

Enter Ethernet port view for the
Layer 3 device

interface

interface-type

interface-number

Define the port as a trunk or hybrid
port

port link-type

{ trunk | hybrid }

Required

port hybrid vlan

vlan-list { tagged

| untagged }

Specify the VLANs to be allowed to
pass the Ethernet port

port trunk permit vlan vlan-list

Required
The multicast VLAN must be
included, and the port must be
configured to forward tagged
packets for the multicast VLAN if
the port type is hybrid.

Enter Ethernet port view for a user
device

interface interface-type
interface-number

Define the port as a hybrid port

port link-type hybrid

Required

Specify the VLANs to be allowed to
pass the port

port hybrid vlan

vlan-id-list

{ tagged | untagged }

Required
The multicast VLAN must be
included, and the port must be
configured to forward tagged
packets for the multicast VLAN.

z

One port can belong to only one multicast VLAN.

z

The port connected to a user terminal must be a hybrid port.

z

The multicast member ports must be in the same VLAN with the router port. Otherwise, the
multicast member port cannot receive multicast packets.

z

If a router port is in a multicast VLAN, the router port must be configured as a trunk port or a hybrid
port that allows tagged packets to pass for the multicast VLAN. Otherwise, all the multicast
member ports in this multicast VLAN cannot receive multicast packets.

z

When the multicast VLAN is set up, all IGMP report messages are forwarded to the router ports in
the multicast VLAN. If no router ports exist in the multicast VLAN, all IGMP report messages are
flooded within the multicast VLAN.

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