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User Manual for the NETGEAR 7200 Series Layer 2 Managed Switch Software
B-8 Glossary
202-10010-01
GVRP
See “GARP VLAN Registration Protocol” on page 7.
H
Half-duplex
A system that allows packets to transmitted and received, but not at the same time. Contrast with
full-duplex.
I
IEEE
Institute of Electrical and Electronics Engineers. This American organization was founded in 1963 and sets
standards for computers and communications.
IETF
Internet Engineering Task Force. An organization responsible for providing engineering solutions for TCP/
IP networks. In the network management area, this group is responsible for the development of the SNMP
protocol.
IGMP
See “Internet Group Management Protocol” on page 8.
IGMP Snooping
A series of operations performed by intermediate systems to add logic to the network to optimize the flow of
multicast traffic; these intermediate systems (such as Layer 2 switches) listen for IGMP messages and build
mapping tables and associated forwarding filters, in addition to reducing the IGMP protocol traffic. See
“Internet Group Management Protocol” on page 8 for more information.
Internet Group Management Protocol
IGMP is the standard for IP Multicasting on the Internet. IGMP is used to establish host memberships in
particular multicast groups on a single network. The mechanisms of the protocol allow a host to inform its
local router, using Host Membership Reports, that it wants to receive messages addressed to a specific
multicast group. All hosts conforming to Level 2 of the IP Multicasting specification require IGMP.
IP
See “Internet Protocol” on page 9.