Study And Implementation Of The Function Of OAM Sublayer In Metro Area Ethernet Network

With the uninterrupted growth of network technologies, The business of IP high speed data business and multi-media business occupies more and more many portion in telecommunication marketplace, but the tradition pronunciation business letting down already becomes a trend being not allowed to turn back.The tradition Metro Area Networks technology reveals out its limitation gradually on delivering the new data business, But, the Ethernet networks technology has demonstrated the gigantic vigour in Metro Area Networks field. Because of its altitude flexibility and the simplicity coming true,it is develop swift and violent in recent years. The Carrier Ethernet already becomes one of the most valuable technology of younger generation Metro Area Networks Technologies.Ethernet OAM provides perfect QoS guarantee for the operation of the Ethernet Networks. It works directly in the data link layer and do not dependent on the concrete business type, and takes a crucial role that can't got rid of for Ethernet come into Carrier Area Networks .By the study of key technologies of Ethernet OAM, the thesis brings forward a kind of scheme about Carrier Area Networks whose operation and maintenance is protected by Ethernet OAM technologies.We also have a description on the Implementation of this scheme, and then design and implement the the Function of OAM Sublayer on a idiographic point of the scheme. For this purpose, firstly,the thesis introduces the definition ,function need and present situation of Ethernet OAM briefly. And then analysis the key technologies of Ethernet OAM based on the protocol draft IEEE 802.1ag in detail, and improve and perfect a few functions by having an expansion on it's messages; Secondly, the thesis analysis the scheme of Carrier Area Networks and designed out a scheme of Carrier Area Networks that has delaminating structure. Finally the thesis implements the OAM function sublayer and have assumed analysis to it.