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Configuring an Emulated LAN
6.2 Emulated LAN Components
The components of an emulated LAN include LAN Emulation Clients (LECs), and LAN Emulation Services consisting of: a LAN Emulation Configuration Server (LECS), a LAN Emulation Server (LES), and a Broadcast and Unknown Server (BUS). Each of these services may
reside in the same physical system or in separate physical systems. For example, the LECS
could reside in a switch, while the LES and BUS reside in a workstation. In the current ForeThought 4.1.0 software, the LECS, LES, and BUS are supported for systems runing SunOS or
Solaris; and for ASX-200 series and ASX-1000 switches. The functional interconnections of a
simple ELAN consisting of two LECs, an LECS, LES, and BUS are shown in Figure 6.1.
Workstation
LAN Emulation
Configuration Server
(LECS)
Bridge
LAN Emulation Server
(LES)
LAN Emulation
Client
(LEC)
Broadcast and Unknown
Server
(BUS)
LAN Emulation
Client
(LEC)
LAN Emulation Services
Legacy
LAN
Figure 6.1 - Basic Emulated LAN Interconnections
6-2
ForeRunner™ MCA-200E ATM Micro Channel Bus Adapter User’s Manual