ATM Configuration and Troubleshooting Guide

Conﬁguring LAN Emulation Interfaces

HP LAN Emulation Client

Chapter 4 39

HP LAN Emulation Client

HP’s ATM adapter software provides LAN Emulation Client (LEC)

functionality conforming to the ATM Forum 1.0 speciﬁcations for LAN

Emulation Version 1 and Version 2. HP’s LEC software supports up to 32

instances of the LEC per adapter—that is, one adapter can belong to up

to 32 emulated LANs (ELANs) simultaneously and independently. As

with traditional physical LANs, communication between ELANs is

possible only through routers. Also, HP’s ATM adapter software allows

LAN Emulation to be run simultaneously with Classical IP over ATM.

Each ELAN consists of a number of LECs, a LAN Emulation

Conﬁguration Server (LECS), a LAN Emulation Server (LES), and a

Broadcast and Unknown Server (BUS). The LEC software runs on each

ATM end system, such as a workstation, server, edge device, or ATM

switch. In the current software release, the LECS, LES, and BUS must

reside in another third-party device such as a workstation, switch, or

bridge. HP’s ATM adapter software supports emulation of Ethernet and

Token Ring LANs.

Additionally, HP’s ATM adapter software allows you to conﬁgure

secondary LAN Emulation services (LECS, LES, and BUS) to provide

LECS, LES, and BUS redundancy, to eliminate any single point of failure

within the LAN Emulation Services.