本文選題：多協(xié)議標(biāo)簽交換　切入點(diǎn)：虛擬專用網(wǎng)絡(luò)　出處：《山東大學(xué)》2014年碩士論文

【摘要】：隨著企業(yè)分支機(jī)構(gòu)的增多,企業(yè)的物理分布范圍也越來越大,尤其是在信息化程度如此高的互聯(lián)網(wǎng)時(shí)代,企業(yè)內(nèi)部分支機(jī)構(gòu)之間通信的安全性和有效性越來越引起企業(yè)的關(guān)注。在以前的企業(yè)網(wǎng)絡(luò)設(shè)計(jì)中,要實(shí)現(xiàn)遠(yuǎn)程客戶之間的專用鏈路,只能租用物理專線,這對(duì)企業(yè)來說無疑是一筆不小的成本支出,同時(shí)也增加了服務(wù)提供商網(wǎng)絡(luò)布線的復(fù)雜度。 如何在有限的物理資源上滿足每個(gè)企業(yè)的需求昵?基于MPLS的VPN就是這樣一種虛擬網(wǎng)絡(luò)技術(shù)。MPLS技術(shù)通過在運(yùn)營商網(wǎng)絡(luò)中某兩臺(tái)遠(yuǎn)端設(shè)備之間的每一跳路由上分配標(biāo)簽,進(jìn)而在兩臺(tái)設(shè)備之間建立虛擬的鏈路。網(wǎng)絡(luò)服務(wù)提供商會(huì)為每一個(gè)定制虛擬網(wǎng)絡(luò)服務(wù)的企業(yè)打上一個(gè)唯一的標(biāo)記。對(duì)于每一個(gè)企業(yè)來說,這條虛擬鏈路是獨(dú)占的,而對(duì)于運(yùn)營商來說卻又是供很多企業(yè)共享的。國內(nèi)的虛擬專用網(wǎng)絡(luò)大多基于三層即網(wǎng)絡(luò)層進(jìn)行開發(fā),這種方式能夠解決企業(yè)的需求,但是卻固定了網(wǎng)絡(luò)的傳輸方式,因?yàn)槿龑拥奶摂M網(wǎng)絡(luò)使企業(yè)內(nèi)部的數(shù)據(jù)流量需要進(jìn)行三層的數(shù)據(jù)交換,并且服務(wù)提供商網(wǎng)絡(luò)的邊緣設(shè)備需要保存大量的私網(wǎng)路由信息。 基于MPLS技術(shù)的二層虛擬網(wǎng)絡(luò)能更好的解決這個(gè)問題。它實(shí)現(xiàn)對(duì)數(shù)據(jù)包的標(biāo)簽操作在網(wǎng)絡(luò)的第二層,不需要再進(jìn)入IP層,這樣數(shù)據(jù)包對(duì)上層是透明的,網(wǎng)絡(luò)層就可以采用不同的網(wǎng)絡(luò)協(xié)議而不影響數(shù)據(jù)的傳輸。這保證了企業(yè)內(nèi)部信息傳輸?shù)陌踩煽?大大降低了企業(yè)的成本,同時(shí)也減輕了運(yùn)營商網(wǎng)絡(luò)邊緣設(shè)備的負(fù)擔(dān)。 本項(xiàng)目是在XX公司Comware平臺(tái)上進(jìn)行開發(fā)的。Comware平臺(tái)能夠給用戶提供全面的網(wǎng)絡(luò)功能,滿足了用戶對(duì)網(wǎng)絡(luò)操作系統(tǒng)的需求,是目前國內(nèi)網(wǎng)絡(luò)通信領(lǐng)域少數(shù)支持全系列網(wǎng)絡(luò)設(shè)備的網(wǎng)絡(luò)操作系統(tǒng)。在此基礎(chǔ)上進(jìn)行該項(xiàng)目開發(fā)可以很方便的使用已有的其它的通信協(xié)議或者在已有的通信協(xié)議上進(jìn)行協(xié)議功能擴(kuò)展,從而有效的完成該項(xiàng)目。本項(xiàng)目實(shí)現(xiàn)LDP方式的MPLS L2VPN。L2VPN將作為Comware平臺(tái)上的一個(gè)獨(dú)立進(jìn)程,實(shí)現(xiàn)L2VPN特性的控制平面,通過在LDP進(jìn)程中運(yùn)行VC線程進(jìn)行信令通告。項(xiàng)目最終的成果是在運(yùn)營商網(wǎng)絡(luò)上建立L2VPN虛擬實(shí)例,生成L2VPN轉(zhuǎn)發(fā)控制邏輯,用以控制二層數(shù)據(jù)包的轉(zhuǎn)發(fā)。
[Abstract]:With the increasing of enterprise branches, physical distribution scope of enterprises is also growing, especially in such a high degree of information of the Internet era, between the branches of internal communication safety and effectiveness has attracted more and more attention from enterprises. In the previous enterprise network design, to achieve the specific link between the remote client. Can only rent the physical line, this is not a small cost to the enterprise, but also increase the complexity of the service provider network cabling.
How to meet the needs of each enterprise or in physics on the limited resources? MPLS VPN is a virtual network based on.MPLS technology through each hop routing between two sets of remote equipment in network operators on the distribution label, and then establish the virtual link between two devices. Mark network services the chamber of Commerce for every custom virtual network service enterprises play a unique. For each enterprise, the virtual link is exclusive, but for operators but also for many enterprises sharing. Network virtual private network in China are mostly based on the development of three layer network layer, the the way to address the needs of enterprises, but the fixed transmission network, because the virtual network layer three makes data flow within the enterprise needs three level data exchange, and network service providers The edge device needs to preserve a large number of private network routing information.
The two layer virtual network MPLS technology can better solve this problem. It is based on the realization of the packet label operation in the second layer of the network, no need to enter the IP layer, so that the data packet is transparent to upper layer, the network layer can adopt different network protocols without affecting data transmission. This ensures that the internal information transmission safety and reliability, greatly reduces the cost of enterprises, but also reduce the burden on the operator's network edge device.
This project is carried out in the XX Comware platform developed on the.Comware platform to provide comprehensive network functions to the user, to meet the needs of users of the network operating system, network operating system is currently a network communications support a full range of network equipment. On the basis of the development of the project to other communication protocols is very convenient the use of the existing communication protocol or in the protocol extensions, so as to effectively complete the project. The project implementation LDP the MPLS L2VPN.L2VPN Comware will serve as a platform on a separate process, the realization of control plane characteristic of L2VPN, by running the VC threads in the LDP process for project final notice. The result is to establish L2VPN virtual instances in the operator's network, generating L2VPN forwarding control logic is used to control the two layer packet forwarding.

【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP393.1

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4 殷瑋s，

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