Generic Multicast Registration Protocol (GMRP)
GMRP allows network devices to register end stations with multicast groups. GMRP requires
that any participating network devices or end stations comply with the IEEE 802.1p standard.
Group Attribute Registration Protocol (GARP)
See Generic Attribute Registration Protocol.
IEEE 802.1d
Specifies a general method for the operation of MAC bridges, including the Spanning Tree
Protocol.
IEEE 802.1q
VLAN Tagging—Defines Ethernet frame tags which carry VLAN information. It allows switches
to assign endstations to different virtual LANs, and defines a standard way for VLANs to
communicate across switched networks.
IEEE 802.1p
An IEEE standard for providing quality of service (QoS) in Ethernet networks. The standard uses
packet tags that define up to eight traffic classes and allows switches to transmit packets
based on the tagged priority value.
IEEE 802.1X
Port Authentication controls access to the switch ports by requiring users to first enter a user
ID and password for authentication.
IEEE 802.3ac
Defines frame extensions for VLAN tagging.
IEEE 802.3x
Defines Ethernet frame start/stop requests and timers used for flow control on full-duplex links.
(Now incorporated in IEEE 802.3-2002)
Internet Group Management Protocol (IGMP)
A protocol through which hosts can register with their local router for multicast services. If
there is more than one multicast switch/router on a given subnetwork, one of the devices acts
as the “querier” and assumes responsibility for keeping track of group membership.
IGMP Snooping
Listening to IGMP Query and IGMP Report packets transferred between IP Multicast Routers
and IP Multicast host groups to identify IP Multicast group members.
IGMP Query
On each subnetwork, one IGMP-capable device will act as the querier — that is, the device that
asks all hosts to report on the IP multicast groups they wish to join or to which they already
belong. The elected querier will be the device with the lowest IP address in the subnetwork.
IP Multicast Filtering
It is a
feature to allow or deny the Client to add the specified multicast group.
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