Accton Technology ES4626 - Manual (Page 607)

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Chapter 15 Multicast VLAN
15.1 Introductions To Multicast VLAN
Based on current multicast order method, when orders from users in different VLAN,
each VLAN will copy a multicast traffic in this VLAN, which is a great waste of the
bandwidth. By configuration of the multicast VLAN, we add the switch port to the
multicast VLAN, with the IGMP Snooping functions enabled, users from different VLAN
will share the same multicast VLAN. The multicast traffic only exists within a multicast
VLAN, so the bandwidth is saved. As the multicast VLAN is absolutely separated from
the user VLAN, security and bandwidth concerns can be met at the same time, after the
multicast VLAN is configured, the multicast traffic will be continuously sent to the users.
15.2 Multicast VLAN Configuration Task
1. Enable the multicast VLAN function
2. Configure the IGMP Snooping
1. Enable the multicast VLAN function
Command Explanation
VLAN config mode
multicast-vlan
no multicast-vlan
Configure a VLAN and enable the multicast
VLAN on it. The “no multicast-vlan”
command disables the multicast function
on the VLAN
multicast-vlan association
no multicast-vlan association
Associate a multicast VLAN with several
VLANs. The “no" form of this command
deletes the related VLANs associated with
the multicast VLAN
2. Configure the IGMP Snooping
Command Explanation
Global Mode
ip igmp snooping vlan
no ip igmp snooping vlan
Enable the IGMP Snooping function on the
multicast vlan. The "no” form of this
command disables the IGMP Snooping on
the multicast vlan
ip igmp snooping Enable the IGMP Snooping function. The