710 Configuring L2 Multicast Features
PowerConnect 7000 Series switches can use GARP functionality for two
applications:
• GARP VLAN Registration Protocol (GVRP) to help dynamically manage
VLAN memberships on trunk ports.
• GARP Multicast Registration Protocol (GMRP) to help control the
flooding of multicast traffic by keeping track of group membership
information.
GVRP and GMRP use the same set of GARP Timers to specify the amount of
time to wait before transmitting various GARP messages.
GMRP is similar to IGMP snooping in its purpose, but IGMP snooping is
more widely used. GMRP must be running on both the host and the switch to
function properly and IGMP/MLD snooping must be disabled on the switch,
as IGMP snooping and GMRP cannot simultaneously operate within the
same VLAN.
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