In survivable wavelength-division multiplexed networks, the backup resource can be shared by the ... more In survivable wavelength-division multiplexed networks, the backup resource can be shared by the primary light paths, which is called primary-backup sharing. We find that primary-backup sharing can have an effect on the link availability. We focus on routing under dynamic availability of the wavelength resource while the requested reliability of traffic has to be met, using the modified shortest path
We study the connection establishment of label switched paths (LSPs), and compare the LSP blockin... more We study the connection establishment of label switched paths (LSPs), and compare the LSP blocking performance of the overlay and peer models in IP/MPLS over optical networks. We consider two dynamic routing algorithms for the establishment of LSP connections, of which one is for the overlay model and the other is for the peer model. Our investigations on two typical network topologies, namely NSFNET and ARPA2 networks, show that the number of add/drop ports (or transceivers) on optical cross-connects (OXCs) has a significant impact on the LSP blocking performance for both models. We show by computer simulation that in each case, there is a threshold value for the add/drop ratio, which can achieve almost the best blocking performance. This threshold value remains virtually unchanged as the traffic load varies, but it does depend on the network topology and the number of wavelengths per fiber. This will then indicate the number of add/drop ports to be used so that one can achieve a near optimal blocking performance without incurring unnecessarily excessive network costs. Our investigations reveal that the peer model achieves a much better blocking performance than the overlay model when the number of add/drop ports is relatively high, but that this is not always true when the number of add/drop ports is small.
This paper proposes two optical grid resource allocation and task scheduling algorithms, task-bas... more This paper proposes two optical grid resource allocation and task scheduling algorithms, task-based approaches (TBA) and workflow-based approaches (WBA), for data-intensive workflow-based applications. Not only the efficient allocation for the entire workflow but also the network resources contention are considered. An optical grid simulator is developed to investigate the performance of the resource allocation approaches. Experimental results show that WBA
1. Introduction GMPLS-controlled optical network is considered as a promising infrastructure for ... more 1. Introduction GMPLS-controlled optical network is considered as a promising infrastructure for distributed computing to solve more and more complex scientific problems [1].The key issue of distributed computing is resource scheduling. Recently, the coordinated scheduling ...
This paper studies the routing problems in Internet protocol/wavelength-division-multiplexing (IP... more This paper studies the routing problems in Internet protocol/wavelength-division-multiplexing (IP/WDM) networks based on the overlay routing algorithm (ORA) and the integrated routing algorithm (IRA), respectively. Although IRA usually outperforms ORA in terms of blocking performance, IRA exhibits disadvantages in control information exchange, network privacy issue, and wavelength port efficiency. In this paper, a new mechanism called the short lightpath establishment
To support large-scale IP-TV signal delivering, a new multicast-IP over light-tree network model ... more To support large-scale IP-TV signal delivering, a new multicast-IP over light-tree network model was proposed in W. Sun et al. In this paper, we study the problem of topology-independent IP group aggregation in the multicast capable optical network. We first use a tri-partite graph to describe the problem, and then formulate the problem by a mixed integer linear programming (MILP)
It is beneficial, for both customers and carriers, to provide optical virtual private network for... more It is beneficial, for both customers and carriers, to provide optical virtual private network for workflow-based distributed computing applications. We formulate the schedule system and also propose a rescheduling scheme under dynamic shared OVPN scenario.
This paper presents a reconfigurable Photonic Network on Chip architecture and evaluates its ultr... more This paper presents a reconfigurable Photonic Network on Chip architecture and evaluates its ultra-low latency potential. The latency performance simulation shows a 50% decrease compared to static photonic network on chip.
A field trial of dynamic P2MP connections across two domains was successfully achieved in the ASO... more A field trial of dynamic P2MP connections across two domains was successfully achieved in the ASON layer of the 3TNet testbed in Yangtze River Delta, China for the first time using web service mechanism.
In survivable wavelength-division multiplexed networks, the backup resource can be shared by the ... more In survivable wavelength-division multiplexed networks, the backup resource can be shared by the primary light paths, which is called primary-backup sharing. We find that primary-backup sharing can have an effect on the link availability. We focus on routing under dynamic availability of the wavelength resource while the requested reliability of traffic has to be met, using the modified shortest path
We study the connection establishment of label switched paths (LSPs), and compare the LSP blockin... more We study the connection establishment of label switched paths (LSPs), and compare the LSP blocking performance of the overlay and peer models in IP/MPLS over optical networks. We consider two dynamic routing algorithms for the establishment of LSP connections, of which one is for the overlay model and the other is for the peer model. Our investigations on two typical network topologies, namely NSFNET and ARPA2 networks, show that the number of add/drop ports (or transceivers) on optical cross-connects (OXCs) has a significant impact on the LSP blocking performance for both models. We show by computer simulation that in each case, there is a threshold value for the add/drop ratio, which can achieve almost the best blocking performance. This threshold value remains virtually unchanged as the traffic load varies, but it does depend on the network topology and the number of wavelengths per fiber. This will then indicate the number of add/drop ports to be used so that one can achieve a near optimal blocking performance without incurring unnecessarily excessive network costs. Our investigations reveal that the peer model achieves a much better blocking performance than the overlay model when the number of add/drop ports is relatively high, but that this is not always true when the number of add/drop ports is small.
This paper proposes two optical grid resource allocation and task scheduling algorithms, task-bas... more This paper proposes two optical grid resource allocation and task scheduling algorithms, task-based approaches (TBA) and workflow-based approaches (WBA), for data-intensive workflow-based applications. Not only the efficient allocation for the entire workflow but also the network resources contention are considered. An optical grid simulator is developed to investigate the performance of the resource allocation approaches. Experimental results show that WBA
1. Introduction GMPLS-controlled optical network is considered as a promising infrastructure for ... more 1. Introduction GMPLS-controlled optical network is considered as a promising infrastructure for distributed computing to solve more and more complex scientific problems [1].The key issue of distributed computing is resource scheduling. Recently, the coordinated scheduling ...
This paper studies the routing problems in Internet protocol/wavelength-division-multiplexing (IP... more This paper studies the routing problems in Internet protocol/wavelength-division-multiplexing (IP/WDM) networks based on the overlay routing algorithm (ORA) and the integrated routing algorithm (IRA), respectively. Although IRA usually outperforms ORA in terms of blocking performance, IRA exhibits disadvantages in control information exchange, network privacy issue, and wavelength port efficiency. In this paper, a new mechanism called the short lightpath establishment
To support large-scale IP-TV signal delivering, a new multicast-IP over light-tree network model ... more To support large-scale IP-TV signal delivering, a new multicast-IP over light-tree network model was proposed in W. Sun et al. In this paper, we study the problem of topology-independent IP group aggregation in the multicast capable optical network. We first use a tri-partite graph to describe the problem, and then formulate the problem by a mixed integer linear programming (MILP)
It is beneficial, for both customers and carriers, to provide optical virtual private network for... more It is beneficial, for both customers and carriers, to provide optical virtual private network for workflow-based distributed computing applications. We formulate the schedule system and also propose a rescheduling scheme under dynamic shared OVPN scenario.
This paper presents a reconfigurable Photonic Network on Chip architecture and evaluates its ultr... more This paper presents a reconfigurable Photonic Network on Chip architecture and evaluates its ultra-low latency potential. The latency performance simulation shows a 50% decrease compared to static photonic network on chip.
A field trial of dynamic P2MP connections across two domains was successfully achieved in the ASO... more A field trial of dynamic P2MP connections across two domains was successfully achieved in the ASON layer of the 3TNet testbed in Yangtze River Delta, China for the first time using web service mechanism.
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Papers by Yaohui Jin