ATM Configuration and Troubleshooting Guide

Configuring LAN Emulation Interfaces
Summary of LAN Emulation
Chapter 440
Summary of LAN Emulation
Figure 4-1 below shows how the components of an emulated LAN work
together, showing the functional interconnections of a simple ELAN
consisting of two LECs, and LECS, LES, and BUS LAN Emulation
Services. One LEC is resident on a system with a direct ATM connection,
and one LEC is resident on an edge device, such as an ATM switch or
bridge that connects the ATM network and the legacy Ethernet or Token
Ring network.
Figure 4-1 Components of an Emulated LAN
LAN Emulation Components
The function of each component of an ELAN is as follows:
• The LAN Emulation Client (LEC) is the component in the end
system that performs data forwarding, address resolution, and other
control functions for a single end system within a single ELAN. It
also provides a MAC-level emulated Ethernet or Token Ring
LAN Emulation Services
LEC
LEC
LECS
LES
BUS
Legacy LAN
Multicast Forward
Control Distribute
Configuration
Direct
Control
Direct
Multicast Send
Data
Direct
System
Edge device