107
Appendix B
LAN Emulation
ATI’s ATM software implements ATM Forum’s Lan Emulation Client (LEC).
LEC implementation, in turn, conforms to the Lan Emulation Specification
1.0. That is, your switch implements LEC functionality between a legacy
Ethernet device and an ATM network. This is important since connection to
the LAN Emulation Service (LES) is through LECs.
LECs are typically implemented at ATM End Stations, either as part of the
software driver (between the Operating System and ATM hardware) or as
part of the ATM Adapter (ATM specific hardware). This means that,
essentially, your switch is an LEC.
The following illustration depicts a typical configuration that involves LAN
Emulation.
MASTER
POWER
FAULT
STATUS
3608
CentreCOM
IEEE 802.3/ETHERNET 10 BASE 2
MULTIPORT HUB / REPEATER
with Network Management
RS-232
TERMINAL PORT
POWER
APPLIQUÉ PORT
FOIRL NETWORK PORTS 1-8
1
2
3
4
5
6
7
8
ON LINE
RECEIVE
OFF
ON
TERMINATOR
ON LINE
RECEIVE
OFF
ON
TERMINATOR
ON LINE
RECEIVE
OFF
ON
TERMINATOR
ON LINE
RECEIVE
OFF
ON
TERMINATOR
ON LINE
RECEIVE
OFF
ON
TERMINATOR
ON LINE
RECEIVE
OFF
ON
TERMINATOR
ON LINE
RECEIVE
OFF
ON
TERMINATOR
ON LINE
RECEIVE
OFF
ON
TERMINATOR
