【摘要】：軟件定義網(wǎng)絡(luò)(SDN)和網(wǎng)絡(luò)功能虛擬化(NFV)促進(jìn)了網(wǎng)絡(luò)的創(chuàng)新,NFV實(shí)現(xiàn)了虛擬網(wǎng)絡(luò)功能(VNF)的邏輯集中部署。針對(duì)v EPC(virtualized Evolved Packed Core)網(wǎng)絡(luò)中VNF的池組化部署問(wèn)題,該文提出一種支持節(jié)點(diǎn)分割的VNF部署模型,該模型基于虛擬請(qǐng)求業(yè)務(wù)流量的感知,利用節(jié)點(diǎn)分割算法動(dòng)態(tài)調(diào)整VNF與底層網(wǎng)絡(luò)資源切片的映射關(guān)系,實(shí)現(xiàn)VNF的跨域組池。與傳統(tǒng)的多功能鏈聯(lián)合映射算法相比,該方法能夠?qū)崿F(xiàn)節(jié)點(diǎn)資源細(xì)粒度化管理和統(tǒng)籌調(diào)度,優(yōu)化網(wǎng)絡(luò)視圖,減少資源碎片。在SNDlib提供的網(wǎng)絡(luò)拓?fù)鋵?shí)例下仿真證明,該模型可以降低虛擬網(wǎng)絡(luò)的資源開(kāi)銷(xiāo),并提高虛擬網(wǎng)絡(luò)的請(qǐng)求接收率。
[Abstract]:Software-defined network (SDN) and network function virtualization (NFV) promote the innovation of network. NFV realizes the logical centralized deployment of virtual network function (VNF). In order to solve the problem of pool deployment of VNF in v EPC (virtualized Evolved Packed Core) networks, a new VNF deployment model supporting node segmentation is proposed in this paper. The model is based on the perception of virtual request traffic. The node segmentation algorithm is used to dynamically adjust the mapping relationship between VNF and the underlying network resource slice to realize the cross-domain group pool of VNF. Compared with the traditional multi-function chain joint mapping algorithm, this method can realize the fine-grained management and overall scheduling of node resources, optimize the network view, and reduce the resource fragments. The simulation results of the network topology provided by SNDlib show that the proposed model can reduce the resource overhead of the virtual network and improve the request receiving rate of the virtual network.
【作者單位】： 國(guó)家數(shù)字交換系統(tǒng)工程技術(shù)研究中心;移動(dòng)互聯(lián)網(wǎng)安全技術(shù)國(guó)家工程實(shí)驗(yàn)室;
【基金】：國(guó)家863計(jì)劃項(xiàng)目(2014AA01A701) 國(guó)家自然科學(xué)基金(61521003) 科技部支撐計(jì)劃(2014BAH30B01)~~
【分類(lèi)號(hào)】：TP393.0

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本文編號(hào)：2444393