User's Manual

Table Of Contents
Configuration Guide of XGS-5240-Series
44-1
Chapter 44 Multicast VLAN
44.1 Introductions to Multicast VLAN
Based on current multicast order method, when orders from users in different VLA
N, 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 multic
ast VLAN, with the IGMP Snooping/MLD Snooping functions enabled, users from differe
nt 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 separa
ted from the user VLAN, security and bandwidth concerns can be met at the same tim
e, after the multicast VLAN is configured, the multicast traffic will be continuously sent t
o the users.
44.2 Multicast VLAN Configuration Task List
1. Enable the multicast VLAN function
2. Configure the IGMP Snooping
3. Configure the MLD Snooping
1. Enable the multicast VLAN function
Command
Explanation
VLAN configuration mode
multicast-vlan
no multicast-vlan
Configure a VLAN and enable the multica
st VLAN on it. The “no multicast-vlan” co
mmand disables the multicast function on
the VLAN.
multicast-vlan association <vlan-list>
no multicast-vlan association <vlan-list>
Associate a multicast VLAN with several V
LANs. The no form of this command delet
es the related VLANs associated with the
multicast VLAN.
multicast-vlan association interface (eth
ernet | port-channel|) IFNAME
no multicast-vlan association interface
(ethernet | port-channel|) IFNAME
Associate the specified port with the multic
ast VLAN, so the associated ports are abl
e to receive the multicast flow. The no co
mmand cancels the association between t
he ports and the multicast VLAN.