Novel Node-Ranking Approach for SDN-Based Virtual Network Embedding

Table 1

VNE notations.

	Substrate network
	Set of substrate nodes
	Substrate nodes
	Set of substrate links
	Substrate links
	Total computing capability of substrate nodes
	Remaining node computing capability
	Total flow rule capacity of substrate nodes
	Remaining flow rule capacity of substrate nodes
	Total bandwidth of substrate links
	Remaining bandwidth of substrate links
	Virtual network
	Set of virtual nodes
	Virtual nodes
	Set of virtual links
	Virtual links
	Computing capability demand of virtual nodes
	Flow rule capacity demand of virtual nodes
	Bandwidth demand of virtual links