Ipv6 Multicast Vlan Configuration; Ipv6 Multicast Vlan Overview - HP A5500 SI Switch Series Configuration Manual

IPv6 multicast VLAN configuration

IPv6 multicast VLAN overview

As shown in
A, Host B, and Host C—which belong to different VLANs require IPv6 multicast programs-on-demand
service, the Layer 3 device—Router A—must forward a separate copy of the multicast traffic in each user
VLAN to the Layer 2 device, Switch A. This results in not only waste of network bandwidth but also extra
burden on the Layer 3 device.
Figure 71 Multicast transmission without IPv6 multicast VLAN
The IPv6 multicast VLAN feature configured on the Layer 2 device is the solution to this issue. With the
IPv6 multicast VLAN feature, the Layer 3 device needs to replicate the multicast traffic only in the IPv6
multicast VLAN instead of making a separate copy of the multicast traffic in each user VLAN. This saves
network bandwidth and lessens the burden on the Layer 3 device.
The IPv6 multicast VLAN feature can be implemented by the following approaches: sub-VLAN-based
multicast VLAN and port-based multicast VLAN.
Sub-VLAN-based IPv6 multicast VLAN
As shown in
VLAN 10 as an IPv6 multicast VLAN, configure all user VLANs as sub-VLANs of VLAN 10, and enable
MLD snooping in the IPv6 multicast VLAN.
Figure 71, in the traditional IPv6 multicast programs-on-demand mode, when hosts—Host
Figure 72, Host A, Host B and Host C are in different user VLANs. On Switch A, configure
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