Chapter 14. Switched Multimegabit Data Service
Objectives
Tell how SMDS works, and describe its components.
Describe the operational elements of the SMDS environment, and outline its underlying protocol.
Discuss related technologies.
Discuss SMDS access classes and cell formats.
Introduction
Switched Multimegabit Data Service (SMDS) is a high-speed, packet-switched, datagram-based WAN networking technology used for communication over public data networks (PDNs). SMDS can use fiber- or copper-based media; it supports speeds of 1.544 Mbps over Digital Signal level 1 (DS-1) transmission facilities, or 44.736 Mbps over Digital Signal level 3 (DS-3) transmission facilities. In addition, SMDS data units are large enough to encapsulate entire IEEE 802.3, ...
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