33 Due to the huge economies of scale it enjoyed
34 IP refers to the Internet protocol in the network layer (which is Layer 3 in the OSI model).
35 Because the enterprise is required to share its IP addressing with the Service, some control is given up
in terms of how they manage their LANs.
36 The underlying price-points and operational aspects of these technologies were simply untenable to
those expected in the very cost sensitive and operationally simple LAN.
37 For exchanging data; note that networking for voice preceded long before, and a well-developed
infrastructure to support local and long distance (including international) calling has existed for years.
Billions of dollars have been invested in this voice-optimized circuit-switching infrastructure.
its success beyond the LAN (in metro networks), ATM in the LAN would have
also meant a seamless connection to ATM networks beyond the LAN. And LAN
Emulation (LANE), a mechanism to simulate the characteristics of a LAN (connectionless,
multicast, etc.) over a switched ATM backbone was also developed.
However, it was significantly complex to engineer ATM LANs. This coupled with
the fact that Ethernet continued to evolve mitigated??”and even surpassed??”the
functional advantages of ATM in a short time, and that too at a much more attractive
price,33 ultimately resulting in Ethernet prevailing easily.
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