Grid Job Routing Algorithms - Phosphorus

Grid Job Routing Algorithms5 PHOSPHORUS Network ScenariosIn this section network architectures with respect to routing are briefly described according to [G 2 MPLS-MODELS] and the PHOSPHORUS network topologies are defined based on [PHOSP-TestBed]5.1 PHOSPHORUS Network ArchitecturesTwo Control Plane models are identified in the PHOSPHORUS architecture: the overlay and the integratedmodel. In this section we will briefly discuss the different routing approaches adopted by these models toidentify the location of the routing functions in the two models. More detailed information will be provided indeliverable D5.5 “Recommendations for Control Plane design”5.1.1 Overlay modelIn the GMPLS overlay model [IETF-RFC4208], a GMPLS User to Network Interface (UNI) is identified and strictseparation of routing information between network layers is operated. The topological view from an Area islimited to the intra-area details, plus some reachability information about far-edge nodes, either staticallyconfigured (configuration-based reachability [GMPLS-ARCH]) or derived by some routing interactions (a kindon partial peering reachability [GMPLS-ARCH]). The core-nodes in an Area act as a closed system and theedge-nodes do not participate in the routing protocol instance that runs among the core nodes.Following this approach in the PHOSPHORUS Overlay model, the Grid layer has Grid and network routingknowledge in order to provide Grid and network resource configuration and monitoring. The Control Plane inthese cases acts as an information bearer of network and Grid resources and as a configuration “arm” just forthe network service part.Project:PHOSPHORUSDeliverable Number: D.5.3Date of Issue: 31/06/07EC Contract No.: 034115Document Code: Phosphorus-WP5-D5.345