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Metro Ethernet by Sam Halabi

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Introduction

Metro Ethernet—opposites attract. Ethernet is a technology that has had major success in the LAN, displacing other once-promising technologies such as Token Ring, FDDI, and ATM. Ethernet's simplicity and price/performance advantages have made it the ultimate winner, extending from the enterprise workgroup closet all the way to the enterprise backbone and data centers. The metro is the last portion of the network standing between subscribers or businesses and the vast amount of information that is available on the Internet. The metro is entrenched with legacy time-division multiplexing (TDM) and SONET/SDH technology that is designed for traditional voice and leased-line services. These legacy technologies are inadequate for handling ...

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