User's Manual

Glossary
4Motion 917 System Manual
IGMP Internet Group Membership Protocol) is protocol used by IP hosts to report their host
group memberships to any immediately neighboring multicast routers.
The use of IP multicasting in TCP/IP networks is defined as a TCP/IP standard in
RFC 1112. In addition to defining address and host extensions for how IP hosts
support multicasting, this RFC also defines the IGMP version 1. Version 2 of IGMP is
defined in RFC 2236. Both versions of IGMP provide a protocol to exchange and
update information about host membership in specific multicast groups.
IP Internet Protocol. The standard that defines how data is transmitted over the
Internet. IP bundles data, including e-mail, faxes, voice calls and messages, and
other types, into "packets", in order to transmit it over public and private networks.
IPv4 Internet Protocol version 4 is still the most commonly used Internet Protocol (IP)
version, initially deployed in 1983. IPv4 addresses are 32-bit numbers often
expressed as 4 octets in "dotted decimal" notation (for example, 192.0.32.67). IPv6
is the newer version of the Internet Protocol (deployment began in 1999) that offers
many improvements over IPv4, such as 128-bit IP addresses, and will eventualy
completely replace IPv4.
ISP Internet Service Provider. A company that provides access to the Internet.
KEK Key Encryption Key. Key that encrypts or decrypts other key for transmission or
storage.
LED Light Emitting Diode.
MAC Media Access Control. The lower of the two sub-layers of the data link layer defined
by the IEEE. The MAC sub-layer handles access to shared media, such as whether
token passing or contention will be used.
MAC Address Standardized data link layer address that is required for every port or device that
connects to a LAN. Other devices in the network use these addresses to locate
specific ports in the network and to create and update routing tables and data
structures. MAC addresses are 6bytes long and are controlled by the IEEE.
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MIB Management Information Base. A database of objects that can be monitored by a
network management system. SNMP uses standardized MIB formats that allow any
SNMP tools to monitor any device defined by a MIB.
MIMO Multiple Input, Multiple Output. A technique for faster wireless communication.
MIMO allows for the use of multiple transmitter and receiver antennas to increase
throughput and range.
MIP Mobile IP. A protocol used to provide IP mobility to IPv4-based nodes, defined in
RFC-2002.
MIR Maximum Information Rate. Specifies the maximum rate of information that can be
available to a user. The MIR is used by the traffic policing mechanism to prevent
users from sending excess traffic to the network.