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IGMP Snooping protocol implementation in EPON

Author: SunMin
Tutor: ZhuHong；DaiChengGang
School: University of Electronic Science and Technology
Course: Software Engineering
Keywords: EPON IGMP Snooping protocol Multicast Embedded
CLC: TN929.1
Type: Master's thesis
Year: 2010
Downloads: 22
Quote: 0
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Abstract


EPON (Ethernet Passive Optical Network) from the first mile Ethernet Alliance (EFMA) proposed in early 2001. EPON protocol used in line with IEEE802.3 Ethernet frame bearer service information, topological structure using the multipoint PON structure. In order to support broadband multimedia services, EPON supports multicast is very necessary, because multicast is to save bandwidth and reduces network load is one effective means. In EPON system, OLT and ONU functionally equivalent Ethernet switches, they all belong to a Layer 2 device multicast packets and broadcast packets indiscriminately, OLT directly after receiving the multicast packets will go out of their broadcasts, it will not only waste a lot of network bandwidth, causing broadcast storms, also affected the normal course of business, there is an urgent need to achieve EPON system multicast support. Will support multicast IGMP Snooping EPON protocol application to enable it to effectively carry out IPTV and other multimedia services. In order to support EPON broadband multimedia services, it is necessary to study the problem on an EPON supports multicast because multicast technology to save bandwidth and reduces network load is one effective means. Said generally refers to a multicast IP multicast, which is implemented in three; while the EPON system, OLT and ONU essentially as Ethernet switches, they all belong to layer two device, multicast packets and broadcast package indiscriminately, OLT after receiving the multicast packets directly to the broadcasted (a phenomenon known as the Pan-stream), it will not only waste a lot of network bandwidth, causing broadcast storms, also affected the normal course of business, there is an urgent need EPON system to achieve the multicast support. The Layer 2 multicast technology into EPON, EPON at the application level must make greater development. The study technology at home and abroad have been carried out and achieved certain results, the multicast technologies have been widely studied and applied. In this paper we achieve more emphasis on how to use the software embedded in the way in EPON multicast protocol. This paper consists of five parts: The first part briefly describes the structure of EPON, characteristics and its EPON system supports IGMP Snooping protocol background and significance. The second part discusses the operation of the network layer protocol IGMP Snooping IGMP protocol and the relationship, and IGMP Snooping protocol implementations in EPON system was designed. The third part describes the IGMP Snooping protocol to create task module, queue control structure module, the system initialization process IGMP message processing module and other modules design methods. The fourth section describes the embedded under the Tornado development environment for debugging debugging methods, and analysis of the results. The fifth part of graduate design are summarized.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Lightwave communications, laser communications
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