244APPENDIX E: GLOSSARY
EAPOL is implemented as part of the IEEE 802.1X Port Authentication standard.
Generic Attribute GARP is a protocol that can be used by endstations and switches to Registration Protocol register and propagate multicast group membership information in a (GARP) switched environment so that multicast data frames are propagated
only to those parts of a switched LAN containing registered endstations. Formerly called Group Address Registration Protocol.
IEEE 802.1D Specifies a general method for the operation of MAC bridges, including the Spanning Tree Protocol.
IEEE 802.1Q VLAN
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 802.3 Defines carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications.
IEEE 802.3ab Defines CSMA/CD access method and physical layer specifications for
IEEE 802.3ac Defines frame extensions for VLAN tagging.
IEEE 802.3af (PoE) An IEEE standard for providing Power over Ethernet (PoE) capabilities. When Ethernet is passed over copper cable, two twisted pairs are used for data transfer, and two twisted pairs are unused. With PoE, power can either be passed over the two data pairs or over the two spare pairs.
IEEE 802.3at (PoE Plus) An IEEE standard for providing more power to
