3Com S7906E - Switch, Configuration Manual

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1-5
Configuration Prerequisites
Before configuring port-based multicast VLAN, complete the following tasks:
z
Create VLANs as required
z
Enable IGMP Snooping in the VLAN to be configured as a multicast VLAN
z
Enable IGMP Snooping in all the 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. Thus,
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.
For details about the port link-type , port hybrid pvid vlan , and port hybrid vlan commands, refer to
VLAN Commands in the Access Volume .
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.