LevelOne GSW-4876 User Manual

Page 303

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LOSSARY

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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 802.1

P

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 802.1

S

An IEEE standard for the Multiple Spanning Tree Protocol (MSTP) which

provides independent spanning trees for VLAN groups.

IEEE 802.1

W

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.

IEEE 802.3

AC

Defines frame extensions for VLAN tagging.

IEEE 802.3

X

Defines Ethernet frame start/stop requests and timers used for flow control

on full-duplex links. (Now incorporated in IEEE 802.3-2002)

IGMP

Internet Group Management Protocol. 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 is

made the “querier” and assumes responsibility for keeping track of group

membership.

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