A Survey on OpenFlow Technologies

SUMMARY This paper presents past and recent trends of optical networks and addresses the future directions. First, we describe path networks with the historical backgrounds and trends. path networks have advanced by using various multiplexing technologies. They include time-division multiplexing (TDM), asynchronous transfer mode (ATM), and wavelengthdivision multiplexing (WDM). ATM was later succeeded to multi-protocol label switching (MPLS). Second, we present generalized MPLS technologies (GMPLS). In GMPLS, the label concept of MPLS is extended to other labels used in TDM, WDM, and fiber networks. GMPLS enables network operators to serve networks deployed by different technologies with a common protocol suite of GMPLS. Third, we describe multi-layer traffic engineering and a path computation element (PCE). Multi-layer traffic engineering designs and controls networks considering resource usages of more than one layer. This leads to use network resources more efficiently than the single-layer traffic engineering adopted independently for each layer. PCE is defined as a network element that computes paths, which are used for traffic engineering. Then, we address software-defined networks, which put the designed network functions into the programmable data plane by way of the management plane. We describe the evaluation from GMPLS to software defined networking (SDN) and transport SDN. Fifth, we describe the advanced devices and switches for optical networks. Finally, we address advances in networking technologies and future directions on optical networking.

Section: Transport Sdn and Software Defined Transport Network (Sdtn)mentioning

confidence: 99%

Optical Networking Paradigm: Past, Recent Trends and Future Directions

Oki

Wada

Okamoto

et al. 2017

“…SDN is a technique for separating the control plane from the forwarding plane; this effectively removes the routing function from the node and assigns it to the SDN controller [74]- [77]. The SDN controller employs a general server to run routing software that performs packet forwarding on the path by determining the path, controlling the node device, and setting the forwarding table (Fig.…”

Section: Software-defined Networking and Network Function Virtualizationmentioning

confidence: 99%

100-Year History and Future of Network System Technologies in Japan

Tode

Ito²

2017

SUMMARY Telecommunication networks have evolved from telephony networks to the Internet, and they sustainably support the development of a secured, safe, and comfortable society. The so-called "switching technology" including the evolved "network system technology" is one of the main infrastructure technologies used for realizing information communication services. On the occasion of completion of 100 years since the establishment of the IEICE, we summarize the history of network system technologies and present their future direction for the next generation. We mainly focus on a series of technologies that evolved through the discussions of the IEICE technical committees on switching engineering, launched 50 years ago, switching systems engineering, and network systems in action.

“…A centralized controller has the potential to manage link bandwidths in the network and to dictate scheduled transmission times to routers. The scalability of SAR for network size can be resolved by implementing several research proposals for OpenFlow, such as a hierarchical structure for the OpenFlow controller and flow aggregation [15].…”

Section: Algorithm For Traffic Management In Space-timementioning

confidence: 99%

Time-Dimensional Traffic Engineering with Storage Aware Routing

Yamashita

Yagyu

Yamamoto

2014

SUMMARYBecause of the popularity of rich content, such as video files, the amount of traffic on the Internet continues to grow every year. Not only is the overall traffic increasing, but also the temporal fluctuations in traffic are increasing, and differences in the amounts of traffic between peak and off-peak periods are becoming very large. Consequently, efficient use of link bandwidth is becoming more challenging. In this paper, we propose a new system for content distribution: storage aware routing (SAR). With SAR, routers having large storage capacities can exploit those links that are underutilized. Our performance evaluations show that SAR can smooth the fluctuations in link utilization.