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IGMP/MLD Snooping
IGMP
Snooping
IGMP (Internet Group Management Protocol) is a
communications protocol used by hosts and adjacent
routers on IP networks to establish multicast group
memberships. IGMP is an integral part of IP multicast.
IGMP snooping streamlines multicast traffic handling by
examining (snooping) IGMP membership report messages
from interested hosts, multicast traffic is limited to the
subset of ports on which the hosts reside.
IGMP snooping is enabled by default in the access point
The access point supports IGMPv1, IGMPv2 and IGMPv3 in
IGMP Snooping.
MLD Snooping
MLD (Multicast Listener Discovery) is a component of the
Internet Protocol Version 6 (IPv6) suite. MLD is used by
IPv6 routers for discovering multicast listeners on a
directly attached link, much like IGMP is used in IPv4.
Multicast Listener Discovery (MLD) Snooping provides
multicast containment by forwarding traffic only to those
clients that have MLD receivers for a specific multicast
group (destination address). The access point maintains the
MLD group membership information by processing MLD
reports and generating messages so traffic can be
forwarded to ports receiving MLD reports.
MLD snooping is enabled by default in the access point
The access point supports MLDv1 and MLDv2 in MLD
Snooping.
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