QVIA-SDN: Towards QoS-Aware Virtual Infrastructure Allocation on SDN-based Clouds

Abstract

Virtual Infrastructures (VIs) emerged as a potential solution for network evolution and cloud services provisioning on the Internet. Deploying VIs, however, is still challenging mainly due to a rigid management of networking resources. By splitting control and data planes, Software-Defined Networks (SDN) enable custom and more flexible management, allowing for reducing data center usage, as well as providing mechanisms to guarantee bandwidth and latency control on switches and endpoints. However, reaping the benefits of SDN for VI embedding in cloud data centers is not trivial. Allocation frameworks require combined information from the control plan (e.g., isolation policies, flow identification) and data (e.g., storage capacity, flow table configuration) to find a suitable solution. In this context, the present work proposes a mixed integer programming formulation for the VI allocation problem that considers the main challenges regarding SDN-based cloud data centers. Some constraints are then relaxed resulting in a linear program, for which a heuristic is introduced. Experimental results of the mechanism, termed as QVIA-SDN, highlight that an SDN-aware allocation solution can reduce the data center usage and improve the quality-of-service perceived by hosted tenants.

Towards Edge Computing as a Service: Dynamic Formation of the Micro Data-Centers

“…Looking at the CC design it can be seen that every part there contributes to a more resilient and scalable system. CC architecture consists of three main building blocks: cluster, region, and availability zone [41].…”

“…A Region represents a geographic location where cloud resources (or clusters) are located. Regions are isolated and independent from each other, composed of few availability zones [41]. Every availability zone represents a logical DC in a region available for cloud customers to use.…”

Cloud broker proposal based on multicriteria decision‐making and virtual infrastructure migration

“…In this sense, services based on SDN, latency sensitivity, and virtual networks have higher priority when compared with other attributes. It is expected that applications hosted by VI provisioned with network elasticity can absorb peaks of loads, internally implementing SDN‐guided management . Following this line of thought, the QoS schema benefits services with bandwidth reservation and latency control, focusing in applications manipulating a large volume of data or needing to keep QoS even in the presence of network variations (eg, video streaming, and stream processing).…”

“…It is expected that applications hosted by VI provisioned with network elasticity can absorb peaks of loads, internally implementing SDN-guided management. 62,63 Following this line of thought, the QoS schema benefits services with bandwidth reservation and latency control, focusing in applications manipulating a large volume of data or needing to keep QoS even in the presence of network variations (eg, video streaming, and stream processing). Stream process applications hosted atop VI based on QoS schema benefit from the internal service stability to offer a continuous and reliable service, fundamental requirements to improve end-user experience.…”

Network-Aware Container Scheduling in Multi-Tenant Data Center

“…However, on large scale DC topologies, servers are interconnected by multiple paths composed of at least one switch hop. In order to keep the model realistic with current DCs, we rely on network management techniques, such as SDN [4] to control the physical links usage and populate the E s with updated information and available paths.…”