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Priority Attribute gives priority to the emergency data and real time data should be considered with the above resource class attribute and policy attribute Ex) Priority Based Routing Resilience attribute Determine the behavior of traffic stream on the link,or node fault conditions Related to preemption ,priority, policy attributes Protection Link Group (PLG) useful for providing the differentiated services of protection according to the priority of the link or data provides differentiated recovery time when the priority link and its backup path are established by using the three recovery schemes The Characteristics of Common Attributes |