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 More computer ebooks Networking Ethernet Passive Optical Networks - McGraw Hill
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 Part 1 provides an overview of PON-enabling technologies, introduces the history of EPON development, and compares EPON to alternative solutions, such as ATM-based PONs and PONs utilizing the generic framing procedure.Part 2 provides an overview of a portion of IEEE 802.3ah standard relevant to EPONs. In Part 3 we investigate several system-level issues which were considered out-of-scope by the IEEE 802.3ah standard. In Chapter 10 we describe an encryption method optimized for EPON. In Chapter 11 we investigate the effectiveness of various path protection schemes in EPON. Part 4 investigates performance of EPON. It is, to a significant degree, based on author’s research conducted at UC Davis Networks Research Lab. Chapter 12 investigates the various bandwidth overheads associated with EPON, such as optical overhead, framing overhead, scheduling overhead, and error correction overhead. In Chapter 13 we look at the efficiency of the discovery process in EPON. Then, we turn our attention to various scheduling and bandwidth allocation schemes and their impact on EPON’s ability to support applications and services with diverse requirements. In Chapter 14 we consider the simple scheme with a statically allocated bandwidth. When EPONs first emerged, several companies were advocating for and intended to build EPONs based on static allocation of bandwidth. Chapter 15 introduces the reader to a simple dynamic bandwidth allocation scheme called interleaved polling with adaptive cycle time (IPACT). In Chapter 16, we examine how EPON can provide differentiated services by combining IPACT with strict (exhaustive) priority scheduling which is a default scheduling algorithm specified in IEEE 802.1D. In Chapter 17 we take a more formal look at EPON scheduling objectives. We argue that providing service guarantees and fairness, scalability, and isolation requires much more than what priority-based schemes can achieve. In Chapter 18, we present fair queuing with service envelopes (FQSE) —an algorithm that successfully achieves both conflicting goals: it uses hierarchical control, yet is maintains fairness among all the consumers located across different groups. Download free ebook for networking: Ethernet Passive Optical Networks
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