Proposal and implementation of an autonomous distributed control for elimination of incomplete lightpaths in optical packet and circuit integrated networks

T. Miyazawa, H. Furukawa, H. Harai, N. Wada
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引用次数: 2

Abstract

We are developing an optical packet and circuit integrated network. When a process of lightpath establishment or release fails due to discarding of signaling packets on the network, some nodes are burdened with undesired optical path-connections remaining in themselves. It is possible that our conventional system requires a long time to eliminate such an incomplete lightpath. In this paper, we propose and implement a novel autonomous distributed control for elimination of incomplete lightpaths. In our proposed system, lightpath refreshing messages are generated and transferred by means of the same procedure as signaling. Thereby, when a lightpath establishment or release fails, any nodes can recognize the failures at about the same time because the sender does not transmit lightpath refreshing messages. As a result, the time required to eliminate incomplete lightpaths can be reduced, and furthermore the proposed system is sufficiently robust. Besides, our proposed signaling function is properly interlocked with a dynamic resource-adjustment control, and thus the status of usage of lightpaths in the network can automatically recover.
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光分组与电路集成网络中不完全光路消除的自主分布式控制的提出与实现
我们正在开发一个光分组和电路集成网络。当一个光路建立或释放过程由于网络上信令包的丢弃而失败时,一些节点本身就有不需要的光路连接。我们的传统系统可能需要很长的时间来消除这种不完整的光路。在本文中,我们提出并实现了一种新的自治分布式控制来消除不完全光路。在我们提出的系统中,光路刷新消息是通过与信令相同的过程产生和传输的。因此,当光路建立或释放失败时,任何节点都可以在大约同一时间识别失败,因为发送者不传输光路刷新消息。因此,消除不完全光路所需的时间可以减少,而且所提出的系统具有足够的鲁棒性。此外,我们提出的信令功能与动态资源调整控制适当联锁,从而可以自动恢复网络中光路的使用状态。
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