Abstract
In Industrial Internet of Things (IoT) applications, when the network size increases and different types of flows share the bandwidth, the demand for flexible and efficient management of the communication network is compelling. In these scenarios, under varying workload and flow priorities, the combined use of Software-Defined Networking (SDN) and Network Virtualization (NV) is a promising solution, as such techniques allow to reduce the network management complexity. This work presents the PrioSDN Resource Manager (PrioSDN_RM), a resource management mechanism based on admission control for virtualized SDN-based networks. The proposed combination imposes bounds on the resource utilization for the virtual slices, which therefore share the network links, while maintaining isolation from each other. The presented approach exploits a priority-based runtime bandwidth distribution mechanism to dynamically react to load changes (e.g., due to alarms). The paper describes the design of the approach and provides experimental results obtained on a real testbed.
Highlights
The Internet of Things (IoT) has brought significant benefits to several application scenarios, such as smart cities [1,2] and smart homes [3,4,5], smart metering [6], robotics [7,8], healthcare [9,10,11], and energy management systems [12]
The other two bytes are used for the Tag control information (TCI) that, in turn, contains the Priority code point (PCP), Drop eligible indicator (DEI), and Virtual Local Area Network (VLAN) identifier (VID)
The results demonstrate that the use of the PrioSDN_RM significantly improves the frame drop ratio (FDR) of both alarm and high priority flows comparing with the same scenario without admission control, in which the drop ratio was between 44% and 47% for alarms and between 47% and 53% for high priority flows, respectively
Summary
The Internet of Things (IoT) has brought significant benefits to several application scenarios, such as smart cities [1,2] and smart homes [3,4,5], smart metering [6], robotics [7,8], healthcare [9,10,11], and energy management systems [12]. Previous work in [22] addressed an approach based on SDN and network virtualization that allows for shared resources In such a work a bandwidth management mechanism for a virtualized. From previous work, this paper proposes the PrioSDN Resource Manager (PrioSDN_RM), an SDN-based approach that aims to wisely manage the available network bandwidth through a dynamic priority-based mechanism based on an admission control. This way, the bandwidth limits are dynamically set depending on the traffic load and on the flows priority, i.e., the presented solution supports online network reconfiguration.
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