G
LOSSARY
Glossary-4
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 802.1s
An IEEE standard for the Multiple Spanning Tree Protocol (MSTP) which
provides independent spanning trees for VLAN groups.
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.
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.
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