H3C Technologies H3C S3100V2 Series Switches - Manual (Page 61)

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Configuration prerequisites
Before you configure port-based multicast VLAN, complete the following tasks:
• Create VLANs as required
• Enable IGMP snooping in the VLAN to be configured as a multicast VLAN
• Enable IGMP snooping in all user VLANs
Configuring user port attributes
Configure the user ports as hybrid ports that permit packets of the specified user VLAN to pass, and
configure the user VLAN to which the user ports belong as the default VLAN.
Configure the user ports to permit packets of the multicast VLAN to pass and untag the packets. After the
configuration, upon receiving multicast packets tagged with the multicast VLAN ID from the upstream
device, the Layer 2 device untags the multicast packets and forwards them to its downstream device.
Follow these steps to configure user port attributes:
To do... Use the command... Remarks
Enter system view system-view —
interface interface-type
interface-number
Enter interface view or port group
view
port-group { manual
port-group-name | aggregation
agg-id }
Required
Use either command
Configure the user port link type as
hybrid
port link-type hybrid
Required
Access by default
Specify the user VLAN that
comprises the current user port(s)
as the default VLAN
port hybrid pvid vlan vlan-id
Required
VLAN 1 by default
Configure the current user port(s) to
permit packets of the specified
multicast VLAN(s) to pass and
untag the packets
port hybrid vlan vlan-id-list
untagged
Required
By default, a hybrid port permits
only packets of VLAN 1 to pass.
NOTE:
For more information about the port link-type, port hybrid pvid vlan, and port hybrid vlan commands,
see the
Layer 2—LAN Switching Command Reference.
Configuring multicast VLAN ports
In this approach, you need to configure a VLAN as a multicast VLAN and then assign user ports to this
multicast VLAN by either adding the user ports in the multicast VLAN or specifying the multicast VLAN
on the user ports. These two configuration methods give the same result.
Configuring multicast VLAN ports in multicast VLAN view
Follow these steps to configure multicast VLAN ports in multicast VLAN view: