Research Article
Novel Node-Ranking Approach for SDN-Based Virtual Network Embedding
(1) | Calculate the node-ranking value of virtual nodes according to equation (35) | (2) | for all unembedded virtual nodes in VNR | (3) | Select the virtual node with the highest node-ranking value | (4) | Rank the virtual nodes using breadth first search (BFS) algorithm and put the ranking results into Virtual_node_list1 | (5) | end for | (6) | for each unembedded virtual node in Virtual_node_list1 | (7) | Filter the set of substrate nodes that meet the resource and location constraints of | (8) | Calculate the node-ranking value of substrate nodes according to equation (35) | (9) | Rank the substrate nodes by in decreasing order | (10) | Embed the virtual node onto the substrate node with the highest | (11) | end for |
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