ABSTRACT Finding an effective and simple unified control plane (UCP) for IP/Dense Wavelength Divi... more ABSTRACT Finding an effective and simple unified control plane (UCP) for IP/Dense Wavelength Division Multiplexing (DWDM) multi-layer optical networks is very important for network providers. Generalized Multi-Protocol Label Switching (GMPLS) has been in development for decades to control optical transport networks. However, GMPLS-based UCP for IP/DWDM multi-layer networks is extremely complex to be deployed in a real operational products because still there are a lot of non-capable GMPLS equipments. DRAGON (Dynamic Resource Allocation via GMPLS Optical Networks) is a software that solves this issue making these equipments capable for working in a GMPLS network. On the other hand, OpenFlow (OF), one of the most widely used SDN (Software Defined Networking) implementations, can be used as a unified control plane for packet and circuit switched networks . In this paper, we propose and experimentally evaluate two solutions using OpenFlow to control both packet and optical networks (OpenFlow Messages Mapping and OpenFlow Extension). These two solutions are compared with GMPLS-based UCP. The experimental results show that the OpenFlow Extension solution outperforms the OpenFlow Messages Mapping and GMPLS solutions.
2013 15th International Conference on Transparent Optical Networks (ICTON), 2013
ABSTRACT The convergence of packet and circuit networks offers significant advantages, in terms o... more ABSTRACT The convergence of packet and circuit networks offers significant advantages, in terms of cost, energy efficiency and network performance. So there have been many attempts to unify the control and management of these networks. Optical Software Defined Networks is revealing new opportunities and challenges for optical equipments vendors and service providers inspired by recent developments in Software Defined Networking. Extending Open Flow to the optical (transport) layer will enable open programmability and pave the way to multidomain and multilayer network integration, which is driven by convergence of packet and optical technologies. In this paper we propose a simple way to unify both types of network using Open Flow. We exploit the fact that Open Flow provides a common API to the underlying hardware, and allows all of the routing, control and management to be defined in software outside the datapath.
ABSTRACT Network resiliency has become one of the most concerns of services providers who aim to ... more ABSTRACT Network resiliency has become one of the most concerns of services providers who aim to deploy real time applications and provide high availability for their customer. Several papers in the literature proposed solutions to improve protection schemes and to minimize network fault impact. This paper investigates performance evaluation of layer 2/3 protection mechanisms namely Fast Reroute-based mechanisms. The tests have been carried out in our IP over DWDM network testbed that simulate real ISPs network.
ABSTRACT Finding an effective and simple unified control plane (UCP) for IP/Dense Wavelength Divi... more ABSTRACT Finding an effective and simple unified control plane (UCP) for IP/Dense Wavelength Division Multiplexing (DWDM) multi-layer optical networks is very important for network providers. Generalized Multi-Protocol Label Switching (GMPLS) has been in development for decades to control optical transport networks. However, GMPLS-based UCP for IP/DWDM multi-layer networks is extremely complex to be deployed in a real operational products because still there are a lot of non-capable GMPLS equipments. DRAGON (Dynamic Resource Allocation via GMPLS Optical Networks) is a software that solves this issue making these equipments capable for working in a GMPLS network. On the other hand, OpenFlow (OF), one of the most widely used SDN (Software Defined Networking) implementations, can be used as a unified control plane for packet and circuit switched networks . In this paper, we propose and experimentally evaluate two solutions using OpenFlow to control both packet and optical networks (OpenFlow Messages Mapping and OpenFlow Extension). These two solutions are compared with GMPLS-based UCP. The experimental results show that the OpenFlow Extension solution outperforms the OpenFlow Messages Mapping and GMPLS solutions.
2013 15th International Conference on Transparent Optical Networks (ICTON), 2013
ABSTRACT The convergence of packet and circuit networks offers significant advantages, in terms o... more ABSTRACT The convergence of packet and circuit networks offers significant advantages, in terms of cost, energy efficiency and network performance. So there have been many attempts to unify the control and management of these networks. Optical Software Defined Networks is revealing new opportunities and challenges for optical equipments vendors and service providers inspired by recent developments in Software Defined Networking. Extending Open Flow to the optical (transport) layer will enable open programmability and pave the way to multidomain and multilayer network integration, which is driven by convergence of packet and optical technologies. In this paper we propose a simple way to unify both types of network using Open Flow. We exploit the fact that Open Flow provides a common API to the underlying hardware, and allows all of the routing, control and management to be defined in software outside the datapath.
ABSTRACT Network resiliency has become one of the most concerns of services providers who aim to ... more ABSTRACT Network resiliency has become one of the most concerns of services providers who aim to deploy real time applications and provide high availability for their customer. Several papers in the literature proposed solutions to improve protection schemes and to minimize network fault impact. This paper investigates performance evaluation of layer 2/3 protection mechanisms namely Fast Reroute-based mechanisms. The tests have been carried out in our IP over DWDM network testbed that simulate real ISPs network.
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Papers by Karim Idoudi