2002 - cesnet

core backboneP routernetworkoperationalpartnetworkexperimentalpartPoP backbonePoP servicesPE routerCE routerlow speed accessPE routercustomer areacustomer access devicesMAN backboneFigure 3.5: Draft of GigaPoP general topology• PoP backbone– Including PE and CE routers of the MPLS backbone, other network accessdevices and service segments (e.g., servers),– Under the central administration,– Individual access points (ports on routers and switches) for an interfacebetween the backbone and a customer,– For the purpose of experiments, we expect to be using reserved PErouters (logical and physical separation from the operational part ofnetwork).• Customer area– Including routers, switches and other customer elements,– CE elements, from the point of view of MPLS,– Under the exclusive administration of customers,– Very often, these are devices with limited functionality (L2/L3 switches,PC routers, etc.)With respect to the required services of the backbone network and simpledevices on the side of the customer, it is necessary to ensure the requiredfunctions fully on the side of the PE routers. We also need to ensure an explicitinterface between GigaPoP and the subscriber (filters, etc.), while maintainingsufficient capacity of the PE devices.24 High-speed National Research Network and its New Applications 2002