SDN-DMQTT: SDN-Based Platform for Re-configurable MQTT Distributed Brokers Architecture

The MQTT (Message Queuing Telemetry Transport) protocol is widely recommended for IoT (Internet of Things) communication. It uses a single broker for data exchange, which is typically placed in the cloud. However, this centralized approach is not effective for scaling, leading to mist and edge broker distribution. In distributed infrastructures, administrators are forced to manually reconfigure all MQTT communication to meet performance metrics. However, manual reconfiguration has several drawbacks, e.g., it is a time-consuming process and prone to error. To remedy these issues, this paper proposes combining Software-Defined Networking (SDN) and the MQTT protocol. This proposal enables dynamic reconfiguration of MQTT communication on distributed MQTT-based infrastructure. In the current paper, a real-case study of experiments on a real test-bed is carried out to justify the necessity of the proposed approach.