發(fā)布時(shí)間：2018-08-27 16:31

【摘要】：在1973年,以太網(wǎng)誕生了,在過(guò)去的幾十年中,雖然有很多種技術(shù)與以太網(wǎng)競(jìng)爭(zhēng),但是以太網(wǎng)技術(shù)還是一如既往的快速前進(jìn),而有很多技術(shù)已經(jīng)如過(guò)往云煙。而現(xiàn)在,網(wǎng)絡(luò)中承載業(yè)務(wù)流量的網(wǎng)絡(luò)接口絕大部分都是以太網(wǎng)接口了,以太網(wǎng)已經(jīng)無(wú)處不在,以太網(wǎng)整合網(wǎng)絡(luò)的大勢(shì)也越來(lái)越顯著了。以太網(wǎng)技術(shù)已經(jīng)明顯超出了其原有的局域網(wǎng)起源,成為一個(gè)有吸引力的,強(qiáng)大的解決方案。電信級(jí)以太網(wǎng)CE (Carrier Ethernet)概念的出現(xiàn),是以太網(wǎng)技術(shù)最引人注目的一次飛躍。利用電信級(jí)以太網(wǎng)超高的效率和靈活性,運(yùn)營(yíng)商們可以提供高品質(zhì)的新寬帶服務(wù),同時(shí)又大幅度的降低投資成本和維護(hù)成本,增加了收入,而廣大用戶可享受更多種類(lèi)和更加靈活的服務(wù),且費(fèi)用較低。但是,以太網(wǎng)的可靠性一直以來(lái)都是制約其在電信級(jí)網(wǎng)絡(luò)上大規(guī)模運(yùn)營(yíng)的主要因素。 本文為了增強(qiáng)以太網(wǎng)可靠性,分析了以太網(wǎng)OAM在故障檢測(cè)機(jī)制中的不足,在現(xiàn)有以太網(wǎng)保護(hù)技術(shù)的基礎(chǔ)上,提出了一種基于令牌的保護(hù)倒換機(jī)制,并對(duì)不同拓?fù)浣Y(jié)構(gòu)的以太網(wǎng)分別設(shè)計(jì)了保護(hù)方案。 首先,介紹了電信級(jí)以太網(wǎng)的相關(guān)概念和基本要求。 隨后,介紹了以太網(wǎng)保護(hù)參考模型以及故障檢測(cè)方法,詳細(xì)敘述了鏈路聚合技術(shù)、生成樹(shù)協(xié)議、EAPS、RPR、G.8032和G.8031等以太網(wǎng)保護(hù)技術(shù),剖析了其各自的優(yōu)缺點(diǎn)。 接著,針對(duì)現(xiàn)有以太網(wǎng)保護(hù)技術(shù)中OAM故障檢測(cè)機(jī)制的不足和保護(hù)過(guò)程中MAC地址刷新導(dǎo)致的泛洪,提出了基于令牌的保護(hù)倒換機(jī)制,對(duì)線性、單環(huán)和多環(huán)結(jié)構(gòu)分別設(shè)計(jì)了保護(hù)方案。 最后,通過(guò)OPNET仿真軟件對(duì)在不同結(jié)構(gòu)下以太網(wǎng)基于令牌的保護(hù)過(guò)程進(jìn)行了模擬仿真,驗(yàn)證了基于令牌的保護(hù)倒換機(jī)制在以太網(wǎng)中應(yīng)用的可行性。
[Abstract]:In 1973, Ethernet was born, in the past few decades, although there are many kinds of technologies to compete with Ethernet, but Ethernet technology is as fast as ever, and there are many technologies as in the past. Now, the network interface that carries the service flow in the network is mostly Ethernet interface, Ethernet has been everywhere, the trend of Ethernet integration network is becoming more and more obvious. Ethernet technology has gone beyond its original LAN origins to become an attractive, powerful solution. The emergence of telecom Ethernet CE (Carrier Ethernet) concept is the most noticeable leap in Ethernet technology. Taking advantage of the high efficiency and flexibility of telecom Ethernet, operators can provide high-quality new broadband services, while significantly reducing investment and maintenance costs, increasing revenue, And the vast number of users can enjoy more types and more flexible services, and lower cost. However, the reliability of Ethernet has been a major constraint on its large-scale operation in telecom-grade networks. In order to enhance the reliability of Ethernet, this paper analyzes the shortcomings of Ethernet OAM in fault detection mechanism. Based on the existing Ethernet protection technology, a token based protection switching mechanism is proposed. Protection schemes are designed for Ethernet with different topologies. Firstly, the concept and basic requirements of telecom-level Ethernet are introduced. Then, the ethernet protection reference model and fault detection method are introduced, and the link aggregation technology, EAPSU RPRP G.8032 and G.8031 Ethernet protection technologies are described in detail, and their respective advantages and disadvantages are analyzed. Then, aiming at the deficiency of OAM fault detection mechanism in the existing Ethernet protection technology and the flooding caused by MAC address refresh in the protection process, a token based protection switching mechanism is proposed. The protection schemes of single ring and multi-ring structures are designed respectively. Finally, the token based protection process of Ethernet is simulated by OPNET simulation software, which verifies the feasibility of token based protection switching mechanism in Ethernet.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TP393.11

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本文編號(hào)：2207820