Traffic reduction for out-of-band network management over LPWA

In the remote management of network equipment, network administrators use the command-line interactive interface to troubleshoot problems and modify configurations. A dedicated network for out-of-band network management is required to ensure remote control of network equipment even in the event of system failures, increasing the cost of network management. LPWA is a possible candidate for constructing a network for out-of-band management due to its low-cost and long-distance communication performance. However, its low bandwidth would degrade the performance of the interactive management. This paper solves this problem by reducing the size of interactive commands sent to network equipment. We employ Huffman coding-based compression by exploiting biases and operator characteristics of used commands for network management. Performance evaluation results show that the proposed method can reduce the size of operation commands to 3.6%, which is quite better than the traditional deflate algorithm.