Harmony @IEEE Globecom MENS Workshop 2010 paper accepted

Miami (Florida, US) will host the 2nd IEEE International Workshop on Management of Emerging Networks and Services MENS 2010, in conjuction with the IEEE Globecom 2010 conference. The presence and participation of the Network Technologies Cluster in the global event is ensured, since the paper entitled An Analytical Model of the Service Provisioning Time within the Harmony Network Service Plane has been accepted for publication. Check out session MENS 03: Management of P2P Networks and Ad-hoc Networks in the workshop programme.

The Harmony system, developed within the EU IST-FP6 Phosphorus project,  is a multi-domain network resource broker that defines an extra service plane in order to unify the underlying network management systems and supports advance reservation capabilities to utilize the available capacity and network resources in an efficient manner. The service plane consists of at least one inter-domain broker and one adapter for the corresponding network resource provisioning system, although typically several entities populate the extra layer. Thus, the service plane may be deployed using different topologies, considering the specific needs and requirements of each scenario.

The NSP feasible topologies

Harmony NSP supported deployment topologies

In general, the topology of a network seriously affects its reliability, throughput, or even traffic patters. Likewise, the topology of the Harmony service plane directly influences the reliability, performance, and scalability of the plane itself. Thus, an inadequate choice of the service plane deployment model may lead to non desirable situations where lower layers are underperforming. The manuscript submitted aims at evaluating, studying, and proposing an analytical model of the service provisioning time for the different supported architectures.

The key contribution of the work consists of providing a methodology to analyze the scalability of a given service plane topology as a function of the involved transport domains and helping to construct a foundation for further network research and developments in the field of resource co-allocation and generic network service interfaces in heterogeneous environments.

The Harmony physical testbed

Harmony test-bed

The results obtained from the analytical model have been validated using a virtual network provided by the EU FP7  Federica project. The resources from the virtualised testbed has enabled the Harmony NSP to be further analyzed and compared to theoretical models. The topologies built on top of the slice, containing more than 50 entities populating the NSP, would have been impossible to test in real environments, with real data planes, due to the lack of such big deployments. The performed test cases have produced measurements that helped us to better understand and characterize the performance and scalability of the developed system under higher loads than the ones used in the test-bed available in the Phosphorus project.

Service processing time as a function of the hierarchical levels in the service plane

Service processing time as a function of the hierarchical levels in the service plane

Internal IDB processing times

Internal IDB processing times

 

Path finding processing time comparison as a function of the involved domains

Path finding processing time comparison as a function of the involved domains

The work has been done by Jordi Ferrer Riera, Joan A. García-Espín, and Sergi Figuerola from the network technologies cluster in conjunction with Alexander Willner, from the University of Bonn, and Marc De Leenheer and Chris Develder from IBBT – University of Ghent. Chris Develder will be at Miami presenting the work done, so ask him about more details during the presentation day.

See you all there!

About Jordi Ferrer Riera

Graduated in Computer Science in June 2009 at Facultat d'Informàtica de Barcelona (FIB), centre belonging to the Technical University of Catalonia (UPC). He achieved the Telematic Networks and Operating Systems profile. He joins the Network Technologies Cluster of the i2CAT foundation as a software engineer in early 2007 for developing the MANTICORE (Making APN Network Topologies in the Internet COREs) project (2007-2008). In 2008 he starts his collaboration in the FP6 EU funded integrated project PHOSPHORUS (Lambda User Controlled Infrastructure for European Research) IST-034115. In 2009 he also starts working in the MANTICORE II project, an enhanced version of the first proof-of-concept prototype. He also collaborates with the GLIF Generic Network Interface Technical Group (GNI-TG), adapting the Harmony Service Interface (HSI) to the GNI specification. In 2010, he starts collaborating actively in the FP7 EU funded GEYSERS (Generalised Architecture for Dynamic Infrastrucutre Services). He is currently a Ph. D. candidate of the Design and Evaluation of Broadband Networks and Services group within the Telematics Engineering Department of the Technical University of Catalonia (UPC). His research topics are focused on optical network virtualization, infrastructure as a service paradigm, on-demand broadband services, Grid and Cloud computing, dynamic hybrid resource allocation systems, and resource modelling.
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