Proactive failure recovery in OpenFlow based Software Defined Networks

Abstract

Software Defined Networking (SDN) is a network architecture that decouples the control and data planes. SDN enables network control to become directly programmable and the underlying infrastructure to be abstracted from the network services. The foundation for open standards based software defined networking is the OpenFlow protocol. The OpenFlow architecture which is originally designed for Local Area Networks (LANs), doesn't include effective mechanisms for fast resiliency. But metro, carrier grade Ethernet networks and industrial area networks have to guarantee fast resiliency upon network failure. This paper experiments the link protection scheme that aims to enhance the OpenFlow architecture by adding fast recovery mechanisms in the switch and the controller. This is achieved by enabling the controller to add backup paths proactively along with the working paths and enabling the switches to perform the recovery actions locally. As this avoids controller intervention during recovery, the recovery time solely depends upon the failure detection time of the switch. As this will be less compared to the switch-controller round trip time, this gives better results. The performance of the system is evaluated by finding the packet loss and switch over time and comparing it with the current OpenFlow implementations. The system performs reasonably better than the existing systems in terms of switch over time. However the number of backup path entries increase relatively.

A Single-Link Failure Recovery Approach Based on Resource Sharing and Performance Prediction in SDN

“…Different proactive methods have various targets: (a) Recovery delay. In [10] and [11], flow entries of working path and backup path are assigned with different priorities. The former is higher.…”

“…Due to the importance of failure recovery delay, the mainstream of failure recovery is the proactive failure recovery approach. According to the different protected objects, the proactive approaches can be further divided into flow-oriented approach [10], [11] and link-oriented approach [14], [16]. The flow-oriented approach can realize the protection of service flow level and flexibly configure different types of flow.…”

Software Defined Networking for Organizations Network Automation

“…This convention is actualized on the two sides of the interface, between the system foundation and the SDN control programming utilizing the stream idea to recognize arrange traffic dependent on the gathering of predefined rules, which can be static or dynamic, programmable through SDN control programming [11,18,19]. According to [10,12,17], it forms the basis of open networks defined by standards-based software with collaboration from the academic and business sectors, with the Stanford and California universities in Berkeley leading the reins in the first instance. Currently, the Open Networking Foundation (ONF) is responsible for defining the standard.…”

CFR: A cooperative link failure recovery scheme in software‐defined networks

“…Although this kind of method reduced packet loss, it might generate a forwarding loop. Padma et al proposed a link protection scheme, which achieved a local link failure recovery within 50 milliseconds. Although the proposed scheme degraded the burden of controller, it occupied large resources due to generating large backup rules.…”