3Com 155 PCI manual Lec

GLOSSARY 3

LEC

LAN Emulation Client. Typically located in an ATM end station, its task is to maintain address resolution tables and to forward data traffic. Each LEC is associated with a unique ATM address.

LECS

LAN Emulation Configuration Server. A server whose main function is to provide configuration information to an LEC (such as the ELAN it belongs to or its LES).

LES

LAN Emulation Server. A server that implements the control coordination function for the emulated LAN. Examples of this function are enabling a LEC to join an ELAN, and resolving MAC to ATM addresses.

LLC

Logical Link Control. The upper of the two sublayers of the Data Link Layer of the OSI Reference Model that defines the transmission of data between two stations.

MAC

Media Access Control. That part of the ISO model that describes how devices share access to a network. Ethernet, token ring, and FDDI are MAC layer specifications.

Mbps

Megabits (1024 x 1024 bits) per second.

MBps

Megabytes (1024 x 1024 bytes) per second.

Multicast

A technique that allows copies of a single packet or cell to be passed to a selected set of end stations.

Multimode

A large-core (62.5 micron) optical fiber through which multiple signals will propagate.