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Traffic Attribute the element that captures the characteristics of the traffic streams the characteristics of fiber: fiber type(single mode, or multimode), maximum transmission distance per fiber the number of wavelengths per fiber and existence of fiber or not the number of lambda channels included in a waveband the bandwidth of a lambda channel the maximum or minimum of data rate include common elements of resource attributes and utilize the characteristics of resources Adaptivity Attribute (re-optimization) Re-optimization is decided by the change of network state Should consider network stability The Characteristics of Common Attributes |