System information

Glossary
Glossary-3
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 802.3
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
1000BASE-T Fast Ethernet.
IEEE 802.3ac
Defines frame extensions for VLAN tagging.
IEEE 802.3u
Defines CSMA/CD access method and physical layer specifications for
100BASE-TX Fast Ethernet.
IEEE 802.3x
Defines Ethernet frame start/stop requests and timers used for flow control on
full-duplex links.
IEEE 802.3z
Defines CSMA/CD access method and physical layer specifications for 1000BASE
Gigabit Ethernet.
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.
Internet Group Management Protocol (IGMP)
A protocol through which hosts can register with their local router for multicast
services. If there is more than one multicast router on a given subnetwork, one of the