Multi-Controller Placement Optimization Using Naked Mole-Rat Algorithm over Software-Defined Networking Environment

Algorithm 2

Evaluating fitness.

	Input:, //shortest path matrix containing distance between the nodes, the original controller position
	Output:, the average SC latency, mapping of switch-to-controller
	for each do
	for each node do
	find the shortest distance path to the controller;
	= assign the node nearest to it
	Compute controller load capacity using (6)
	while controller load exceeds the capacity do
	assign switch to the next nearest controller
	update the
	end while
	end for
	for each controller do
	find the shortest distance path to controller;
	evaluate the controller-controller latency using the path
	end for
	= the combined global average latency using (7)
	end for
	Return,