Integrated Restoration for Next-Generation IP-Over-Optical Networks

被引：27

作者：

Chiu, Angela L. ^{[1
]}

Choudhury, Gagan ^{[1
]}

Feuer, Mark D. ^{[1
]}

Strand, John L. ^{[1
]}

Woodward, Sheryl L. ^{[1
]}

机构：

[1] AT&T Labs Res, Middletown, NJ 07748 USA

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2011年 / 29卷 / 06期

关键词：

Dynamic networks; integrated IP-Optical Layer networks; optical bypass; optical networks; restoration; routing; transponder placement; wavelength assignment;

D O I：

10.1109/JLT.2011.2111354

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper describes work performed for the Defense Advanced Research Projects Agency CORONET-funded Protocols and Architectures for Resilient Agile Global Optical Networks project to build an integrated IP/optical layer (OL) restoration architecture that combines transponder-shared mesh restoration at the OL with innovative methods of using router line cards and OL reconfigurability to restore from a layer 3 outage. This is a significant advancement over current restoration strategies, which typically add significant additional layer 3 capacity (i.e., additional IP links) to allow all failures to be restored at layer 3 alone. The network and restoration architectures in the integrated restoration method are described, as are design methodologies for each layer. A realistic cost model is applied to demonstrate that the proposed integrated IP/OL restoration strategy may have significant cost advantages for a core IP network when compared to the commonly used restoration strategies today.

引用

页码：916 / 924

页数：9

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