IEEE_Globecom_2020_SecSDN_Workshop_Draft_Paper.pdf (657.06 kB)
Download fileImproving Dependability via Deadline Guarantees in Commodity Real-time Networks
preprint
posted on 2020-10-20, 01:41 authored by Ashish Kasinath, Monowar HasanMonowar Hasan, Sibin Mohan, Rakesh B Bobba, Radhika MittalSoftware-defined Networking (SDN) can facilitate
the deployment of deterministic algorithms with stringent Quality
of Service (QoS) requirements that pave the way for commodity
Real-time (RT) networks. However, current QoS approaches are
conservative and under-provision the network, that becomes a
bottleneck when scaling or upgrading infrastructure. In this paper, we argue that the use of fixed priorities for flows – a common
practice in RT networks, is the root-cause of this issue. We
develop algorithms that use the global view provided by SDN to
develop on-demand, variable priority schemes. Evaluation shows
that this “correct by construction” approach increases network
utilization while still meeting the necessary QoS requirements,
thereby improving network robustness under high utilization.