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核心鏈路感知的可生存虛擬網(wǎng)絡(luò)鏈路保護(hù)方法

蘇玉澤 孟相如 康巧燕 韓曉陽

蘇玉澤, 孟相如, 康巧燕, 韓曉陽. 核心鏈路感知的可生存虛擬網(wǎng)絡(luò)鏈路保護(hù)方法[J]. 電子與信息學(xué)報(bào), 2019, 41(7): 1587-1593. doi: 10.11999/JEIT180737
引用本文: 蘇玉澤, 孟相如, 康巧燕, 韓曉陽. 核心鏈路感知的可生存虛擬網(wǎng)絡(luò)鏈路保護(hù)方法[J]. 電子與信息學(xué)報(bào), 2019, 41(7): 1587-1593. doi: 10.11999/JEIT180737
Yuze SU, Xiangru MENG, Qiaoyan KANG, Xiaoyang HAN. Core Link Aware Survivable Virtual Network Link Protection Method[J]. Journal of Electronics & Information Technology, 2019, 41(7): 1587-1593. doi: 10.11999/JEIT180737
Citation: Yuze SU, Xiangru MENG, Qiaoyan KANG, Xiaoyang HAN. Core Link Aware Survivable Virtual Network Link Protection Method[J]. Journal of Electronics & Information Technology, 2019, 41(7): 1587-1593. doi: 10.11999/JEIT180737

核心鏈路感知的可生存虛擬網(wǎng)絡(luò)鏈路保護(hù)方法

doi: 10.11999/JEIT180737
基金項(xiàng)目: 國(guó)家自然科學(xué)基金(61401499)
詳細(xì)信息
    作者簡(jiǎn)介:

    蘇玉澤:男,1990年生,博士生,研究方向?yàn)樘摂M網(wǎng)絡(luò)映射、網(wǎng)絡(luò)生存性

    孟相如:男,1963年生,教授,研究方向?yàn)橄乱淮W(wǎng)絡(luò)、網(wǎng)絡(luò)安全

    康巧燕:女,1980年生,副教授,研究方向?yàn)榫W(wǎng)絡(luò)生存性、下一代網(wǎng)絡(luò)

    韓曉陽:男,1986年生,博士生,研究方向?yàn)樘摂M網(wǎng)絡(luò)映射、網(wǎng)絡(luò)優(yōu)化

    通訊作者:

    蘇玉澤 glgiuip@163.com

  • 中圖分類號(hào): TP393

Core Link Aware Survivable Virtual Network Link Protection Method

Funds: The National Natural Science Foundation of China (61401499)
  • 摘要: 針對(duì)現(xiàn)有可生存虛擬網(wǎng)絡(luò)鏈路保護(hù)方法無差別對(duì)待所有虛擬鏈路、備份資源消耗多且故障后網(wǎng)絡(luò)恢復(fù)時(shí)延長(zhǎng)的問題,該文提出一種核心鏈路感知的可生存虛擬網(wǎng)絡(luò)鏈路保護(hù)(CLA-SVNLP)方法。首先,綜合考慮虛擬鏈路動(dòng)態(tài)和靜態(tài)兩方面因素構(gòu)建虛擬鏈路核心度度量模型,依據(jù)虛擬網(wǎng)絡(luò)生存性需求,對(duì)核心度較高的虛擬鏈路進(jìn)行備份保護(hù);其次,將p圈引入可生存虛擬網(wǎng)絡(luò)鏈路保護(hù),依據(jù)虛擬網(wǎng)絡(luò)特點(diǎn)構(gòu)建p圈,為核心虛擬鏈路提供1:N保護(hù),即每條核心虛擬鏈路平均消耗1/N條的備份鏈路帶寬資源以減少備份鏈路資源消耗,并將單物理鏈路保護(hù)問題轉(zhuǎn)化為多個(gè)p圈內(nèi)的單虛擬鏈路保護(hù)問題;最后網(wǎng)絡(luò)編碼技術(shù)與p圈結(jié)合,將備份鏈路對(duì)核心虛擬鏈路提供的1:N保護(hù)轉(zhuǎn)化為1+N保護(hù),避免了故障后定位、檢測(cè)及數(shù)據(jù)重傳。仿真結(jié)果表明,該方法提高了備份資源利用率且縮短了故障后的網(wǎng)絡(luò)恢復(fù)時(shí)延。
  • 圖  1  基于p圈和網(wǎng)絡(luò)編碼的可生存虛擬網(wǎng)絡(luò)鏈路保護(hù)示例

    圖  2  請(qǐng)求接受率比較

    圖  3  長(zhǎng)期平均收益開銷比比較

    圖  4  備份帶寬比比較

    表  1  方法比較

    方法名稱方法描述
    CLA-SVNLP核心鏈路感知的可生存虛擬網(wǎng)絡(luò)鏈路保護(hù)方法
    1+1保護(hù)[8]1+1的專有虛擬鏈路保護(hù)方法
    SPA-BK[9]物理層預(yù)留備份資源的Shared Pre-Allocation共享機(jī)制
    G-Coding[14]虛擬拓?fù)湓鰪?qiáng)且采用通用網(wǎng)絡(luò)編碼策略的共享機(jī)制
    下載: 導(dǎo)出CSV

    表  2  平均網(wǎng)絡(luò)恢復(fù)時(shí)延(ms)

    算法名稱μ
    0.050.100.150.200.25
    CLA-SVNLP2.102.202.182.162.14
    G-Coding[14]2.112.182.252.272.26
    SPA-BK[9]4.134.124.294.304.27
    1+1保護(hù)[8]4.254.204.354.334.31
    下載: 導(dǎo)出CSV
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  • 收稿日期:  2018-07-20
  • 修回日期:  2019-01-31
  • 網(wǎng)絡(luò)出版日期:  2019-03-16
  • 刊出日期:  2019-07-01

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