3Com 7000 manual

134GLOSSARY

IEEE 802.1D IEEE standard for bridging.

IFC Communications Interface card communications is the communications protocol between the switch card and the installed interface cards.

in-bandTransmission of auxiliary information, e.g., management messages over the media also used by the system users.

interface card Up to four interface cards can be placed in the CoreBuilder 7000. Each interface card contains four ATM ports for connection to network devices.

internal clock Clock that comes from the local clock on the PB.

IP Internet Protocol. The protocol governing packet forwarding within the Transmission Control Protocol/Internet Protocol (TCP/IP) suite of standards developed and used on the Internet.

IP address Internet Protocol address. A unique identifier for a machine attached to a network made up of two or more interconnected local area or wide area networks.

L

LAN Local Area Network. A data communications network spanning a limited geographical area, such as a single building or campus. It provides communication between computers and peripherals. LANs are distinguished by their small geographical size, high data rate, and low error rate.

LANE LAN Emulation. The set of services, functional groups and protocols which provide for the emulation of LANs utilizing ATM as a backbone to allow connectivity among LAN and ATM attached end stations.

LE LAN Emulation. See LANE.

LEC LAN Emulation Client. The ATM Forum defined specifications in support of LAN-to-LAN connectivity called LAN Emulation. LEC defines that set of functions implemented in a LAN edge device to interface with an ATM network in support of LAN Emulation.

LEC ID LAN Emulation Client Identifier: This identifier, contained in the LAN Emulation header, indicates the ID of the ATM host or ATM-LAN bridge. It is unique for every ATM Client.