OpenFlow is a leading standard for Software-Defined Networking (SDN) and has already played a significant role in reshaping network infrastructures. However, a wide range of existing provider domains is still not equipped with a framework that supports wider deployment of an OpenFlow-based control plane beyond Ethernetdominated networks. We address this gap by introducing a Hardware Abstraction Layer (HAL) which can transform legacy network elements into OpenFlow capable devices. This paper details the functional architecture of HAL, discusses the key design aspects and explains how HAL can support a number of network device classes. In addition, this paper presents the implementation details of HAL for hardware platforms such as DOCSIS (Data over Cable Service Interface Specification) and DWDM (Dense Wavelength Division Multiplexing) which have so far received little attention by the OpenFlow research community despite their wide real-world deployment.
The paper provides a novel solution to implement the IPv6 QoS system as one of Parallel Internets. This approach exploits both an IP protocol and a virtualization technology. Therefore, the proposed IPv6 QoS system is an evolutionary approach for Future Internet. Also, an important advantage of the proposal is that virtual nodes of the IPv6 QoS network operate on separated control and data planes. Such a way of the implementation allows to develop the system with flexible routing and virtual network management.
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