The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper summarizes the energy efficiency improvement obtained by implementing a number of techniques in the core network investigated by the GreenTouch consortium. These techniques include the use of improved components with lower power consumption, mixed line rates (MLR), energy efficient routing, sleep and physical topology optimization. We consider an example continental network topology, NSFNET,...
This work investigates a differentiated resilience scheme for anycasting flows in the context of an MPLS network. The proposed resilience scheme allows anycast flows to survive both link and server failures. Three classes of survivability are considered (dedicated protection, shared protection and restoration). The performance of the different traffic classes is examined through simulation. Performance...
This paper investigates an optical burst switching (OBS) based Grid architecture, where Grid traffic is assumed to co-exist with IP/10GE traffic. In Grid networks, the address of the handling resource is of less significance as different resources can process the job. Therefore anycast routing is implemented to route the Grid job bursts. This implies that Grid jobs are assembled in separate bursts...
The differentiation of resilience services to meet the requirements of different traffic types is a major architectural and design issue. This paper investigates the problem of differentiated resilience for wavelength-division multiplexing (WDM) networks with dynamic traffic grooming. Traffic grooming supports efficient utilization of network resources by allowing sub-wavelength granularity connections...
In this paper, two storage area networks (SANs) extension scenarios are proposed in a wide area wavelength division multiplexing (WDM) mesh architecture. While in the first scenario storage resources are assumed to be located in two nodes serving as primary and secondary SANs, storage resources are assumed to be distributed over a number of nodes serving as primary and secondary SANs in the second...
This paper proposes a distributed storage scenario in a wide area wavelength division multiplexing (WDM) mesh architecture. A number of storage area network (SAN) nodes are introduced to the architecture. Each SAN node serves as a primary SAN for some nodes and as a secondary SAN for others, depending on the node location. Distributing storage over different nodes helps balancing traffic flows between...
This paper presents a new data mirroring technique for storage area networks (SANs) in a metropolitan area wavelength division multiplexing (WDM) ring. Two sectioning links are introduced to the ring to help deal with the hot-node scenario created by the SAN nodes and their mirrors. The performance is evaluated through simulation of a network of 24 nodes, 6 wavelengths with 1 Gb/s access node rate...
This paper introduces a new data mirroring technique for storage area networks (SANs) in a metropolitan area wavelength division multiplexing (WDM) sectioned ring scenario. Performance is evaluated through simulation of a network with 16 nodes, 4 wavelengths, 1 Gb/s access node rate and 5 Gb/s SAN node rate under different asymmetries of both Poisson and self-similar traffic. Results of average node...
First-generation storage area networks (SANs) were designed to operate within limited distances. However, with the destructive effects of catastrophic events in a limited distance environment and the need of large organizations to connect their campuses over large geographic distances to share storage recourses among a larger number of users, the need of extending SANs has become essential. Several...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.