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Cisco Networking Simplified, Second Edition by Paul Della Maggiora, Neil Anderson, Jim Doherty

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Chapter . Optical Technologies

LANs, WANs—and Now MANs

The explosive growth of the Internet and Internet Protocol (IP) applications such as voice, video, and storage area networks (SAN) has boosted bandwidth demands for corporations. With LAN network speeds ranging from 10 Mbps to 10 Gbps, and QoS playing an important role in the delivery of this data, there must be an alternative to traditional WAN and LAN services for connecting metropolitan-area networks (MAN). Network connections that traditionally carried T1 and T3 speeds of data now require fiber channel, Enterprise System Connection (ESCON), Gigabit Ethernet, and 10 Gigabit Ethernet to satisfy demand. The increased demand coupled with the advances in optical technology have dramatically ...

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