6. Looking above the PMDs for EFM's Point-to-Point Optical Solutions

  1. Wael William Diab and
  2. Howard M. Frazier

Published Online: 8 AUG 2011

DOI: 10.1002/9781118121993.ch6

Ethernet in the First Mile: Access for Everyone

Ethernet in the First Mile: Access for Everyone

How to Cite

Diab, W. W. and Frazier, H. M. (2011) Looking above the PMDs for EFM's Point-to-Point Optical Solutions, in Ethernet in the First Mile: Access for Everyone, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9781118121993.ch6

Publication History

  1. Published Online: 8 AUG 2011
  2. Published Print: 24 FEB 2011

ISBN Information

Print ISBN: 9780738148380

Online ISBN: 9781118121993

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Keywords:

  • Ethernet in the First Mile (EFM);
  • Fast Ethernet;
  • Gigabit Ethernet;
  • optical point-to-point links;
  • OSI model

Summary

An Ethernet in the First Mile (EFM) P2P optical physical layer (PHY) consists of a traditional Fast Ethernet or Gigabit Ethernet PHY with a new set of PMD specifications. This chapter examines the layers above the PMD. It starts by explaining the purpose of Clause 66 and its relevance to the upper layer, and then reviews the OSI model. The chapter then reviews the Fast Ethernet and Gigabit Ethernet PCS and PMA sublayers, and gives examples of their implementation. The Media Access Control (MAC), MAC Control, and OAM sublayers are all grouped within the Data Link layer of the ISO seven layer reference models. These sublayers are identical for all EFM point-to-point links. The chapter provides a very brief overview of each of these sublayers to provide context for the discussion of the physical coding (PCS) and physical medium attachment (PMA) sublayers.

Controlled Vocabulary Terms

IEEE 802.3 Standards; media access protocol; optical fiber communication