User manual
G
LOSSARY
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ES-2000 Series
DSCP Differentiated Services Code Point Service. DSCP uses a six-bit tag to
provide for up to 64 different forwarding behaviors. Based on network
policies, different kinds of traffic can be marked for different kinds of
forwarding. The DSCP bits are mapped to the Class of Service categories,
and then into the output queues.
EAPOL Extensible Authentication Protocol over LAN. EAPOL is a client
authentication protocol used by this switch to verify the network access
rights for any device that is plugged into the switch. A user name and
password is requested by the switch, and then passed to an authentication
server (e.g., RADIUS) for verification. EAPOL is implemented as part of the
IEEE 802.1X Port Authentication standard.
GARP Generic Attribute Registration Protocol. GARP is a protocol that can be used
by endstations and switches to register and propagate multicast group
membership information in a 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.
GMRP Generic Multicast Registration Protocol. 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.
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 802.1W An IEEE standard for the Rapid Spanning Tree Protocol (RSTP) which
reduces the convergence time for network topology changes to about 10%
of that required by the older IEEE 802.1D STP standard. (Now incorporated
in IEEE 802.1D-2004)
IEEE 802.1X Port Authentication controls access to the switch ports by requiring users to
first enter a user ID and password for authentication.