207ExtensibleAuthenticationProtocol over LAN(EAPOL)EAPOL is a client authentication protocol used by this switch to verifythe network access rights for any device that is plugged into theswitch. A user name and password is requested by the switch, andthen passed to an authentication server (e.g., RADIUS) for verification.EAPOL is implemented as part of the IEEE 802.1X Port Authenticationstandard.Generic MulticastRegistration Protocol(GMRP)GMRP allows network devices to register end stations with multicastgroups. GMRP requires that any participating network devices or endstations comply with the IEEE 802.1p standard.IEEE 802.1D Specifies a general method for the operation of MAC bridges, includingthe Spanning Tree Protocol.IEEE 802.1Q VLAN Tagging—Defines Ethernet frame tags which carry VLANinformation. It allows switches to assign end stations to different virtualLANs, and defines a standard way for VLANs to communicate acrossswitched networks.IEEE 802.1p An IEEE standard for providing quality of service (QoS) in Ethernetnetworks. The standard uses packet tags that define up to eight trafficclasses and allows switches to transmit packets based on the taggedpriority value.IEEE 802.1s An IEEE standard for the Multiple Spanning Tree Protocol (MSTP) whichprovides independent spanning trees for VLAN groups.IEEE 802.1X Port Authentication controls access to the switch ports by requiringusers 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 flowcontrol on full-duplex links.IGMP Snooping Listening to IGMP Query and IGMP Report packets transferred betweenIP Multicast Routers and IP Multicast host groups to identify IP Multicastgroup members.IGMP Query On each subnetwork, one IGMP-capable device can act as the querier— that is, the device that asks all hosts to report on the IP multicastgroups they wish to join or to which they already belong. The electedquerier is the device with the lowest IP address in the subnetwork.
