Dell N3200-ON EMC Networking N-Series Switches CLI Reference Guide version 6.6 - Page 501

GMRP Commands Dell EMC Networking N1100-ON/N1500/N2000/N2100-ON/N2200ON/N3000-ON/N3100-ON/N3200-ON Series Switches The GARP Multicast Registration Protocol (GMRP) provides a mechanism that allows networking devices to dynamically register (and deregister) Group membership information with the MAC networking devices attached to the same segment, and for that information to be disseminated across all networking devices in the bridged LAN that support Extended Filtering Services. The operation of GMRP relies upon the services provided by the Generic Attribute Registration Protocol (GARP). GMRP is supported as described below. The information registered, deregistered and disseminated via GMRP is in the following forms: 1 Group Membership information: This indicates that there exists one or more GMRP participants which are members of a particular Group, and carry the group MAC addresses associated with the Group. 2 Group service requirements information: This indicates that one or more GMRP participants require Forward all Groups or Forward Unregistered to be the default filtering behavior. NOTE: The Group Service capability is not supported. Registration of group membership information allow networking devices to be made aware that frames destined for that group MAC address concerned should be forwarded in the direction of registered members of the group. Forwarding of frames destined for that group MAC address occur on ports on which such membership registration has been received. Registration of group services requirement information allow networking devices to be made aware that any of their ports that can forward frames in the direction from which the group service requirement information has been received should modify their default group behavior in accordance with the group service requirement expressed. The registration and deregistration of membership results in the multicast table being updated with a new entry or the existing entry modified. Layer 2 Switching Commands 501