Asymmetric optical connections for improved network efficiency
Asymmetric optical connections for improved network efficiency
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DOI：
10.1364/jocn.5.001195
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发表时间：
2013-11
期刊：
影响因子：
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通讯作者：
S. Woodward;Weiyi Zhang;B. Bathula;G. Choudhury;R. Sinha;M. Feuer;J. Strand;A. Chiu
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文献类型：
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作者：
S. Woodward;Weiyi Zhang;B. Bathula;G. Choudhury;R. Sinha;M. Feuer;J. Strand;A. Chiu
IP网络中的链路是单向的，但目前通过具有相同A → Z和Z → A容量的双向光路路由。如果可以独立地处理光路的两个方向，则可能存在节省。在本研究中可能节省，我们已经量化了目前的大型IP骨干网上的流量的不对称性。一个理论上的格林菲尔德网络与类似的非对称交通建模，它表明，使用单向电路，以满足交通需求提供了显着的设备节省。我们认为，对这种方法的好处的研究是决定解决网络设计和运营中面临如此重大变化的障碍是否具有经济意义的第一步。
Links in an IP network are unidirectional but currently are routed over bidirectional optical circuits with identical A → Z and Z → A capacities. Potentially there could be savings if the two directions of an optical circuit could be treated independently. In this study of possible savings, we have quantified the asymmetry of traffic on a current large IP backbone. A theoretical greenfield network with similarly asymmetric traffic is modeled, and it is shown that the use of unidirectional circuits to satisfy traffic demands provides significant equipment savings. We consider this study of the benefits of this approach to be a first step in deciding whether it makes economic sense to tackle the hurdles that would face such a major change in network design and operations.