GE MDS iNET Series, Справочное руководство

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150 MDS iNET Series Reference Manual 05-2806A01, Rev. L
IAPP (inter-Access Point Protocol) —A protocol by which access points share information about the sta-
tions that are connected to them. When a station connects to an access point, the access point updates its
database. When a station leaves one access point and roams to another access point, the new access point
tells the old access point, using IAPP, that the station has left and is now located on the new access point.
ICMP —Internet Control Message Protocol
IGMP (Internet Gateway Management Protocol) —Ethernet level protocol used by routers and similar
devices to manage the distribution of multicast addresses in a network.
IEEE —Institute of Electrical and Electronic Engineers
Image (File)—Data file that contains the operating system and other essential resources for the basic oper-
ation of the radio’s CPU.
LAN —Local Area Network
Latency —The delay (usually expressed in milliseconds) between when data is applied at the transmit port
at one radio, until it appears at the receive port at the other radio.
MAC —Media Access Control
Management Systems —User interface used to manage the unit.
MD5 —A highly secure data encoding scheme. MD5 is a one-way hash algorithm that takes any length of
data and produces a 128 bit “fingerprint.” This fingerprint is “non-reversible,” it is computationally infea-
sible to determine the file based on the fingerprint. For more details review “RFC 1321” available on the
Internet.
MIB —Management Information Base
Microcontroller Unit —See MCU .
Mobile IP —An emerging standard by which access points and stations maintain network connectivity as
the stations move between various IP networks. Through the use of Mobile IP a station can move from its
home IP network to a foreign network while still sending and receiving data using it's original IP address.
Other hosts on the network will not need to know that the station is no longer in its home network and can
continue to send data to the IP address that was assigned to the station. Mobile IP also uses DHCP when the
station moves into a foreign network.
Mobile Station —Refers to a station that moves about while maintaining active connections with the net-
work. Mobility generally implies physical motion. The movement of the station is not limited to a specific
network and IP subnet. In order for a station to be mobile it must establish and tear down connections with
various access points as it moves through the access points' territory. To do this, the station employs roaming
and Mobile IP.
MS —See Management Systems.
MTBF —Mean-Time Between Failures
Multiple Address System (MAS) —See Point-Multipoint System.
Network Name —User-selectable alphanumeric string that is used to identify a group of radio units that
form a communications network. The Access Point and all Remotes within a given system should have the
same network address.
Network-Wide Diagnostics —An advanced method of controlling and interrogating GE MDS radios in a
radio network.
NTP —Network Time Protocol
Packet —The basic unit of data carried on a link layer. On an IP network, this refers to an entire IP datagram
or a fragment thereof.