+7(495) 797-3311 www.qtech.ruМосква, Новозаводская ул., 18, стр. 1258Chapter 36 Multicast VLAN36.1 Introductions to MulticastVLANBased on current multicast order method, when orders from users in different VLAN, eachVLAN will copy a multicast traffic in this VLAN, which is a great waste of the bandwidth. Byconfiguration of the multicast VLAN, we add the switch port to the multicast VLAN, with theIGMP Snooping/MLD Snooping functions enabled, users from different VLAN will share thesame multicast VLAN. The multicast traffic only exists within a multicast VLAN, so thebandwidth 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 isconfigured, the multicast traffic will be continuously sent to the users.36.2 Multicast VLAN ConfigurationTask List1. Enable the multicast VLAN function2. Configure the IGMP Snooping3. Configure the MLD Snooping1. Enable the multicast VLAN functionCommand ExplanationVLAN configuration modemulticast-vlanno multicast-vlanConfigure a VLAN and enable the multicastVLAN on it. The “no multicast-vlan”command disables the multicast function onthe VLAN.multicast-vlan association -list>no multicast-vlan association -list>Associate a multicast VLAN with severalVLANs. The no form of this command deletesthe related VLANs associated with themulticast VLAN.multicast-vlan association interface(ethernet | port-channel|) IFNAME out-tag-id>Associate the specified port with the multicastVLAN, so the associated ports are able toreceive the multicast flow. The no command
