Avaya M-ACCF/SF - Manual (Page 7)

Avaya M770 M-ACCF/SF ATM Access Modules User’s Guide i
Contents
Introduction ......................................................................................................... I
ATM Terminology ...................................................................................I
Finding Information in This Guide .......................................................... II
Conventions ........................................................................................... III
Contents................................................................................................................ i
List of Figures .................................................................................................. vii
List of Tables...................................................................................................... ix
Chapter 1 Overview............................................................................................................. 1
ATM Access Modules ............................................................................... 1
Features and Benefits............................................................................... 1
ATM Benefits ........................................................................................... 1
ATM Access Module Features .............................................................. 2
Avaya M770 Frame Switch Domains....................................................... 2
M-ACC Module Architecture ............................................................... 2
Network Layer Concepts — LAN Emulation ........................................... 3
LAN Emulation Overview .................................................................... 3
Emulated LAN Components ................................................................ 3
LAN Emulation Client (LEC) .................................................... 3
LAN Emulation Server (LES) .................................................... 4
Broadcast and Unknown Server (BUS) .................................... 4
LAN Emulation Configuration Server (LECS) ....................... 4
Emulated LAN Connections ................................................................. 5
Control VCCs ............................................................................... 5
Data VCCs .................................................................................... 6
Frame Ordering ........................................................................... 7
Operation of the LAN Emulation ......................................................... 8
Connecting a LEC to an ELAN ................................................. 8
Registration .................................................................................. 9
Address Resolution ................................................................... 10
Connection Management ......................................................... 10
LAN Emulation Components in Your Network .................. 10
Joining the ELAN ...................................................................... 12
Mapping Ethernet and ATM Addresses ................................ 12
What Happens to Unicast Frames? ........................................ 14
What Happens to Broadcast and Multicast Frames? ........... 14