Research Article
Server Resource Dimensioning and Routing of Service Function Chain in NFV Network Architectures
(1) Input: Physical Network Graph ; SFC request; SFC request Graph | ; ; | ; | ; | ; | (2) Variables: ; | ; | ; | ; | / Evaluation of the candidate mapping of in / | (3) assign the node to the physical network node according to the value of the parameter ; | (4) select the nodes and the physical network paths to be assigned to the server nodes and virtual links | by applying the algorithm proposed in [14] and based on the values of the node and link stresses and ; | determine the variable values: | ; | ; | / Server Resource Availability Check Phase / | (5) for , , do | (6) if then | (7) ; | (8) ; | (9) ; | (10) else | (11) REJECT the SFC request | (12) end if | (13) end for | / Link Resource Availability Check Phase / | (14) for do | (15) if then | (16) ; | (17) else | (18) REJECT the SFC request | (19) end if | (20) end for | (21) Output: ; | |
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