'''UNDER CONSTRUCTION''' [[PageOutline]] In order to truly allow interoperability among different Aggregate Managers(AMs), GENI requires a common language for describing resources, resource requests, and reservations. GENI now uses standardized Request Specification (RSpec) documents which are XML documents following agreed schemas to represent resources. The schemas support Aggregate or resource specific extensions. [wiki:GeniRspec Ongoing work] covers agreeing upon ontologies for other resource types. = RSpec Types = In GENI there are three different types of RSpec, each used to describe resources when communicating with an AM. The communication with an AM, is based on the common [wiki:GAPI_AM_API_V2#APIMethods GENI AM API]. [[Image(rspec-types.png, 60%)]] ==== Advertisement RSpescs ==== This is the document that is returned by an AM that describes the resources that the AM has. ==== Reservation RSpecs ==== This is the document that a user sends to an AM to describe the resources that he wants to reserve. ==== Manifest RSpecs ==== This is the document returned by an AM tha describes the resources that a user has at an AM.