This article discusses how to utilize flexible link cost factor to affect the routing while ASON circuit is set up for the purpose of optimizing ASON network.

文章讨论了如何利用可灵活设置的链路成本因子来影响ASON电路建立时的路由选择，从而达到优化ason网络的目的。

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Delay-constrained least-cost multicast routing problem is studied, and a multicast routing algorithm based on link optimizing is proposed to solve the problem.

研究具有时延约束的最小代价组播路由问题，提出一种基于链路优化的组播路由算法求解该问题。

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