In this chapter, the basic concepts of
Asynchronous Transfer Mode (ATM)
will be explained in Section 
in order to gain a better
understanding of the problems associated with implementing an IP
multicasting system on top of it. Besides using ATM as a LAN technology
for Classical IP and ARP over ATM (CLIP), which will be explained in
Section , and other Layer 3 network protocols, it is also
used in native mode and as lower layer service provider for LAN
Emulation (LANE), which emulates the functions of an
Ethernet or Token-Ring LAN. LANE is
discussed in Section .