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

<table class="table-group" id="tab11"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Number of controllers (<i>K</i>)</td><td class="align_center" colspan="4">Number of controlled switches</td><td class="align_center" rowspan="2">Average SC latency (ms)</td><td class="align_center" rowspan="2">Latency increase from previous</td></tr><tr class="thead"><td class="align_center">Node (8), Delhi</td><td class="align_center">Node (3), Mumbai</td><td class="align_center">Node (7), Bengaluru</td><td class="align_center">Node (13), Kolkata</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">3 (NMR/BAT) algorithm</td><td class="align_center">9 switches, nodes: 4, 5, 8–14</td><td class="align_center">3 switches, nodes: 0, 1, 3</td><td class="align_center">4 switches, nodes: 2, 6, 7, 15</td><td class="align_center">—</td><td class="align_center">3.97</td><td class="align_center">—</td></tr><tr><td class="align_left" colspan="7"><hr/></td></tr><tr><td class="align_left">3 (NMR/BAT) algorithm</td><td class="align_center">6 switches, nodes: 4, 5, 8, 10–12</td><td class="align_center">7 switches, nodes: 0–3, 6, 7, 15</td><td class="align_center">—</td><td class="align_center">3 switches, nodes: 9, 13, 14</td><td class="align_center">4.26</td><td class="align_center">5%</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Ernet: controller placement for <i>k</i> = 3 at load unbalanced/balanced (0.9 SC + 0.1 CC) scenario.</div>

Journal of Computer Networks and Communications

tab11

Table 11

Table 11: Multi-Controller Placement Optimization Using Naked Mole-Rat Algorithm over Software-Defined Networking Environment 