Multicast - BEC 8920AC User Manual

Configuring Your Router
180
Advanced Setup – Multicast

Multicast

Multicast is one of the three network transmission modes, Unicast, Multicast, and Broadcast. It is a
transmission mode that supports point-to-multipoint connections between the sender and the recipient.
IGMP protocol is used to establish and maintain the relationship between IP host and the host directly
connected multicast router.
IGMP stands for Internet Group Management Protocol, it is a communications protocols used to
manage the membership of Internet Protocol multicast groups. IGMP is used by IP hosts and the
adjacent multicast routers to establish multicast group members. There are three versions for IGMP,
they are IGMPv1, IGMPv2 and IGMPv3.
MLD, short for Multicast Listener Discovery protocol, is a component if the Internet Protocol version
6(IPv6) suite. MLD is used by IPv6 to discover multicast listeners on a directly attached link, much as
IGMP used in IPv4. The protocol is embedded in ICMPv6 instead of using a separate protocol. MLDv1
is similar to IGMPv2 and MLDv2 is similar to IGMPv3.
Multicast Precedence: It is for multicast QoS. With lower multicast precedence, IGMP packets will be
put into higher-priority queue. Default is set to disable.
IGMP (for IPv4)
Default Version: Enter the supported IGMP version, 1-3, default is IGMP v3.
Query Interval: Enter the periodic query interval time (sec) the multicast router sending the query
message to hosts to understand the group membership information.
Query Response Interval: Enter the response interval time (sec).
BEC 8920AC User Manual