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

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Number of controllers (<i>K</i>)</td><td class="align_center" colspan="5">Number of controlled switches</td></tr><tr class="thead"><td class="align_center">Node (10), Chicago</td><td class="align_center">Node (12), Los Angeles</td><td class="align_center">Node (18), Saint Louis</td><td class="align_center">Node (0), New York</td><td class="align_center">Node (5), Austin</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">2 (BAT/NMR algorithm)</td><td class="align_center">14 switches, nodes: 0–10, 16-18</td><td class="align_center">5 switches, nodes: 11–15</td><td class="align_center">—</td><td class="align_center">—</td><td class="align_center">—</td></tr><tr><td class="align_left">4 (BAT/NMR algorithm)</td><td class="align_center">—</td><td class="align_center">5 switches, nodes: 11–15</td><td class="align_center">6 switches, nodes: 2, 9, 10, 16–18</td><td class="align_center">5 switches, nodes: 0, 1, 3, 6, 7</td><td class="align_center">3 switches, nodes: 4, 5, 8</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Controller and switches placement details of Savvis.</div>

Journal of Computer Networks and Communications

tab4

Table 4

Table 4: Multi-Controller Placement Optimization Using Naked Mole-Rat Algorithm over Software-Defined Networking Environment 