Hongxiang Guo

Field Trial of an OpenFlow-Based Unified Control Plane for Multilayer Multigranularity Optical Switching Networks

Software defined networking and OpenFlow, which allow operators to control the network using software running on a network operating system within an external controller, provide the maximum flexibility for the operator to control a network, and match the carriers preferences given its centralized architecture, simplicity, and manageability. In this paper, we report a field trial of an OpenFlow-based unified control plane (UCP) for multilayer multigranularity optical switching networks, verifying its overall feasibility and efficiency, and quantitatively evaluating the latencies for end-to-end path creation and restoration. To the best of our knowledge, the field trial of an OpenFlow-based UCP for optical networks is a world first.

Field Trial of GMPLS-Controlled All-Optical Networking Assisted with Optical Performance Monitors

A field trial of GMPLS-controlled all-optical networking was successfully demonstrated with assistance of OPMs capable of monitoring in-band OSNR. The reliable and stable network operation was achieved thanks to the GMPLS control plane and OPMs.

Field Trial of All-Optical Networking Controlled by Intelligent Control Plane With Assistance of Optical Performance Monitors

A field trial of all-optical networking by an intelligent control plane based on generalized multiprotocol label switching (GMPLS) technologies was successfully conducted with the assistance of optical performance monitors (OPMs) capable of monitoring the in-band optical signal-to-noise ratio (OSNR). In the field trial, the GMPLS control plane was applied to not only fast provisioning of all-optical paths but also to end-to-end restoration of optical paths triggered by OPMs. Reliable and stable network operation was achieved as a result of applying the GMPLS control plane and OPMs.

Demonstration of a self-organized consumer Grid architecture

Grid over OBS/GMPLS is successfully demonstrated and a self-organized resource discovery and management scheme is proposed for consumer Grid. High-speed TCPs for Grid are experimentally compared.

GMPLS-controlled all-optical mesh networking demonstration using path computation-capable NMS

A GMPLS-controlled all-optical mesh networking was successfully demonstrated using a path computation-capable network management system (NMS). The developed NMS can manage topology and physical impairments, and create GMPLS-based lightpaths according to path computation results.

An optical switching architecture for intra data center interconnections with ultra-high scalability

We propose an optical switching network architecture called OpenScale. The idea of “small world” topology is employed to construct a flexible and highly scalable network. Simulations verified that proposed architecture can achieve eminent scalability.

Demonstration of GMPLS-controlled inter-domain transparent optical networks

MPLS extensions such as the wavelength label supporting 3R regenerators and BGP dissemination of wavelength reachability across domain boundaries were proposed. Resilient end-to-end lighpath provisioning was successfully achieved in GMPLS-controlled inter-domain transparent optical networks.

Highly Survivable Software Defined Synergistic IP+Optical Transport Networks

A hierarchically controlled IP+Optical multilayer Transport SDN architecture is proposed, which highlights flexible resource provisioning and dynamic cross-layer restorations. The proposals are also demonstrated via an implemented testbed prototype.

Experimental implementation of a protocol interface between GMPLS and LOBS testbed

The multi-layer network for the interworking between Generalized Multi-Protocol Label Switching (GMPLS) and Labeled Optical Burst Switching (LOBS) is nowadays attractive for the future IP/DWDM network. In this paper, an effective protocol interface based on overlay model was proposed to enable the transparent transmission of Burst Header Packets (BHPs) and data bursts between OBS domains via a GMPLS network, while maintaining a simple interworking operation between LOBS and GMPLS networks. Moreover, the interface was implemented and evaluated by using a GMPLS/LOBS testbed, and the experimental results verified that it works effectively on the GMPLS/LOBS interconnection networks.

GMPLS inter-domain signaling and routing to control LSPs based on per-domain policy

GMPLS inter-domain network control was investigated by employing BGP-based inter-domain routing and flexible signaling with loose hop expansion. Per-domain based operational policy was successfully applied to the establishment of GMPLS inter-domain LSPs.