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Traffic Control Mechanisms

There are three main approaches for identifying traffic to be switched:

         Path creation can be control- or topology-driven, where labels are preassigned in relation to normal routing control traffic. Here, the network size dictates the load and bandwidth consumed by the assignment and distribution of label information.

         Request-based control traffic from protocols such as RSVP can trigger path creation relating to individual flows or traffic trunks. Here, the number of labels and computational overhead will depend entirely on the number of flows being supported.

         Data-traffic-driven label assignment is where the arrival of data recognized as a flow activates label assignment and distribution on the fly. This approach implies that there will be latency while path setup takes place. Overheads in this case will be directly proportional to traffic patterns.

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 

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Last modified: June 24, 2022