2008 International Conference on Optical Network Design and Modeling最新文献_第2页

On the design of MPLS-ASON/GMPLS interconnection mechanisms MPLS-ASON/GMPLS互连机制的设计

2008 International Conference on Optical Network Design and Modeling Pub Date : 2008-03-12 DOI: 10.1109/ONDM.2008.4578422

Luis Velasco, R. Romeral, F. Agraz, S. Spadaro, J. Comellas, G. Junyent, D. Larrabeiti

引用次数: 4

Availability-aware design in FIPP p-cycles protected mesh networks FIPP p-cycles保护网状网络的可用性感知设计

2008 International Conference on Optical Network Design and Modeling Pub Date : 2008-03-12 DOI: 10.1109/ONDM.2008.4578414

A. Ranjbar, C. Assi

引用次数: 5

OBGP+: A simple approach to drastically improve OBGP OBGP+:一种彻底改进OBGP的简单方法

2008 International Conference on Optical Network Design and Modeling Pub Date : 2008-03-12 DOI: 10.1109/ONDM.2008.4578403

M. Yannuzzi, X. Masip-Bruin, G. Fabrego, S. Sánchez-López, J. Solé-Pareta

{"title":"OBGP+: A simple approach to drastically improve OBGP","authors":"M. Yannuzzi, X. Masip-Bruin, G. Fabrego, S. Sánchez-López, J. Solé-Pareta","doi":"10.1109/ONDM.2008.4578403","DOIUrl":"https://doi.org/10.1109/ONDM.2008.4578403","url":null,"abstract":"During the last few years, the research community has shown an increasing interest in the subject of inter-domain routing in optical networks, so new approaches like the optical extension of BGP, namely OBGP, have arisen. However, it is widely accepted now that a multi-domain routing model mostly centered on the exchange of reachability information - like the one we have today or the one provided by OBGP - is not going to be enough in the future. Routing domains must be able to exchange both, reachability, as well as aggregated path state information (PSI). Understanding that there is a missing piece in the routing models provided by BGP and OBGP is easy nowadays, but contributing with solutions capable of highly improving the performance of these routing protocols without increasing the number and frequency of the routing messages exchanged between domains is a challenging task. This study makes the following contributions. First, we propose a straightforward strategy to compute highly aggregated PSI between routing domains. Second, we propose OBGP+, an extended version of OBGP that exploits this PSI to compute inter-domain lightpaths in a highly efficient way. Third, in order to avoid the typical increase in the number of routing messages associated with the update of PSI, we propose to piggy-back these updates in non-dummy Keepalive messages exchanged between OBGP+ neighbors. Extensive simulations made with OPNET in the PAN European network topology reveal that: i) OBGP+ is able to drastically reduce the blocking experienced with OBGP; ii) while even needing less number of routing messages than OBGP to achieve this performance.","PeriodicalId":155835,"journal":{"name":"2008 International Conference on Optical Network Design and Modeling","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125880548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Analytical model for dynamic waveband switching 动态波段切换的解析模型

2008 International Conference on Optical Network Design and Modeling Pub Date : 2008-03-12 DOI: 10.1109/ONDM.2008.4578396

P. Ghobril

引用次数: 3

MPLS-VRF integration: forwarding capabilities of BGP/MPLS IP VPN in GNU/Linux MPLS- vrf集成:GNU/Linux下BGP/MPLS IP VPN的转发能力

2008 International Conference on Optical Network Design and Modeling Pub Date : 2008-03-12 DOI: 10.1109/ONDM.2008.4578412

J. A. Picó, J. O. Fajardo, A. Muñoz, A. Ferro

引用次数: 13

S/G Light-tree: Multicast grooming architecture for improved resource allocation S/G轻树:用于改进资源分配的组播修饰架构

2008 International Conference on Optical Network Design and Modeling Pub Date : 2008-03-12 DOI: 10.1109/ONDM.2008.4578419

J. Sierra, L. F. Caro, F. Solano, R. Fabregat, Y. Donoso

{"title":"S/G Light-tree: Multicast grooming architecture for improved resource allocation","authors":"J. Sierra, L. F. Caro, F. Solano, R. Fabregat, Y. Donoso","doi":"10.1109/ONDM.2008.4578419","DOIUrl":"https://doi.org/10.1109/ONDM.2008.4578419","url":null,"abstract":"Internet traffic demands are constantly increasing and a considerable amount of this increase is expected to be of multicast type. Optical transport networks (OTN)must be prepared in terms of better resource utilization for accommodating multicast traffic. For this purpose multicast traffic grooming has been considered. Light-trees have been proposed for supporting multicast connections in OTN. Nevertheless when light-trees are used with traffic grooming, resources can be overutilized as traffic can be routed to undesirable destinations in order to avoid optical-electrical-optical (OEO)conversions. In this paper a novel architecture named S/G light-tree for supporting multicast connections is proposed. The architecture allows to eliminate and aggregate traffic in different wavelengths without performing OEO conversions.The architecture uses labels supported by generalized multiprotocol label switching (GMPLS). A heuristic that routes traffic demands using less wavelengths by taking advantage of the proposed architecture is designed as well. Simulation results show that the architecture can minimize the number of used wavelengths and OEO conversions when compared to light-trees.","PeriodicalId":155835,"journal":{"name":"2008 International Conference on Optical Network Design and Modeling","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123704184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Multiobjective model for multicast overlay networks over IP/MPLS using MOEA 基于MOEA的IP/MPLS多播覆盖网络多目标模型

2008 International Conference on Optical Network Design and Modeling Pub Date : 2008-03-12 DOI: 10.1109/ONDM.2008.4578405

J. Montoya, Y. Donoso, E. Montoya, D. Echeverri

引用次数: 4

Availability analysis of GMPLS connections based on physical network topology 基于物理网络拓扑的GMPLS连接可用性分析

2008 International Conference on Optical Network Design and Modeling Pub Date : 2008-03-12 DOI: 10.1109/ONDM.2008.4578418

J. Segovia, E. Calle, Pere Vilà

引用次数: 14

On provision of availability guarantees using shared protection 关于使用共享保护提供可用性保证

2008 International Conference on Optical Network Design and Modeling Pub Date : 2008-03-12 DOI: 10.1109/ONDM.2008.4578406

A. Mykkeltveit, B. Helvik

{"title":"On provision of availability guarantees using shared protection","authors":"A. Mykkeltveit, B. Helvik","doi":"10.1109/ONDM.2008.4578406","DOIUrl":"https://doi.org/10.1109/ONDM.2008.4578406","url":null,"abstract":"The Internet has traditionally provided an undefined level of availability based on a best-effort restoration scheme, while the telecommunication networks have provided a somewhat higher level, primarily achieved by dedicated protection. In the coming next generation network, the introduction of new services that have different quality of service (QoS) requirements combined with cost conscious customers who make cost/utility trade-offs, yields a need for the network operators to be able to offer different levels of guaranteed availability. The challenge is to find schemes that can provide the guaranteed availability level requested by each connection while at the same time use bandwidth efficiently. Path protection is a well-known technique to improve the availability of connections in optical networks. When availability guarantees are to be offered, dedicated path protection is easily applicable since the availability of the connections can easily be predicted. Shared path protection, however, is more difficult to apply since the computations usually are more involved. In this paper, two schemes for on-line bandwidth-efficient connection-establishment exploiting shared protection are proposed. The schemes are compared through simulation studies on two realistic network topologies.","PeriodicalId":155835,"journal":{"name":"2008 International Conference on Optical Network Design and Modeling","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128727139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Multi-domain routing techniques with topology aggregation in ASON networks 基于拓扑聚合的ASON多域路由技术

2008 International Conference on Optical Network Design and Modeling Pub Date : 2008-03-12 DOI: 10.1109/ONDM.2008.4578402

G. Maier, Chiara Busca, A. Pattavina

{"title":"Multi-domain routing techniques with topology aggregation in ASON networks","authors":"G. Maier, Chiara Busca, A. Pattavina","doi":"10.1109/ONDM.2008.4578402","DOIUrl":"https://doi.org/10.1109/ONDM.2008.4578402","url":null,"abstract":"Thanks to the development of the automatic control plane (ASON and GMPLS standards) optical transport networks are able to provide bandwidth on demand service quickly and efficiently. But for this service to be really interesting to users the capability of seamlessly operating the network across multiple administrative domains should be developed. Multi-domain routing in ASON is a new challenging topic, especially if the target is a scalable solution. The paper investigates this topic and in particular it evaluates the effectiveness of the application of aggregation topology methods to the representation of network domains. These methods, initially devised for ATM networks, can be extended to ASON/GMPLS, as recommended by the Optical Interworking Forum (OIF). Topology aggregation limits the amount of topology information distributed throughout the network and the bandwidth occupation for control-plane signalling, improving scalability. On the other hand, concealing intra-domain topology details to other domains may limit the effectiveness of inter-domain routing. We analyze the behavior of the three topology-aggregation methods proposed by OIF (Simple Node, Full Mesh and Symmetric Star) comparing blocking probability in a multi-domain optical network under dynamic bandwidth-on-demand traffic. We further propose a new topology-aggregation scheme (Hybrid) with improved scalability and evaluate its performance in the case-study network compared to the other known schemes.","PeriodicalId":155835,"journal":{"name":"2008 International Conference on Optical Network Design and Modeling","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128059636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 24