To implement communication between user hosts and an IPv6 multicast network, configure basic MLD functions on the interfaces that connect multicast devices to user network segments.
On an IPv6 multicast network that provides the SSM model, interfaces of multicast devices run MLDv2, but some hosts can run only MLDv1. To allow an MLDv1 host to use the Source-Specific Multicast (SSM) service, configure SSM mapping on a multicast router.
In this configuration task, you can configure a device to deny all the MLD packets without Router-Alert options, send MLD packets without Router-Alert options, and filter MLD packets based on source addresses.
To configure an MLD querier, you can configure the MLD prompt leave function and set the following parameters: interval at which general query messages are sent, robustness variable, maximum response time of Query messages, keepalive time of other MLD queriers, and interval MLD last-listener query messages are sent.
Multicast Listener Discovery (MLD) on-demand helps to maintain MLD group memberships and frees a multicast device and its connected access device from exchanging a large number of packets.
If you want to encrypt and authenticate the sent and received MLD messages, configure MLD IP Security (IPsec). MLD IPsec protects a device against attacks launched using forged MLD messages.