OperationsConceptfor a Solar System Internetwork (SSI)IOAG.T.RC.001.V1EX—6 TRACEABILITY: It shall always be possible for the provider agency to accomplish thefollowing for its own nodes: 1) successfully trace the items which have transited on a givennode on Earth or in space in a certain period of time, 2) to report on delivery success orfailure, and 3) to support redelivery of requested data for a certain (limited) time after thenominal transit date.EX—7 ROBUSTNESS: Each node agreeing to participate as a service provider node in thenetwork shall be robust to nominal operating variations, provided that the data streamrespects the protocols in place, the data dimensions (volumes, transfer rates, transferfrequency), the service agreement, and the technical specification of the network and thenode. Each agency and participating node has the right to abort sessions and discard datathat are outside the agreed boundaries.EX—8 TRANSPARENCY: Each node agreeing to participate in the network shall be indifferentand transparent to any contents of the transferred data units, provided that the data streamrespects the protocols and the technical specification of the network. Each agency andparticipating node is expected to transfer data without examining the contents of the data.EX—9 INTEGRITY: The SSI shall be capable of delivering complete, gap-free data productsbetween any two nodes.EX—10 USER EMERGENCY: The SSI shall allow for defining and using, under pre-agreedconditions, a path from the user MOC to the user node that is completely deterministic ingeometry and timing (e.g., to recover from anomalies in the network and/or the user node).EX—11 NETWORK EMERGENCY: An interagency alert system shall be supported. Crossoperations (like interventions on user data in transit) shall remain exceptional, within a preagreedframe, and require close interaction between user and provider as for cases ofemergency support.EX—12 LAST-HOP SERVICE: The SSI shall facilitate a defined, cross-supported means for theuser MOC to communicate with nodes that cannot implement SSI user node functions dueto spacecraft emergency, or with legacy assets that are not capable of SSI functionality. SSIsupport of last-hop services will be achieved by establishing an SSI transfer from the userMOC to a standardized Delivery Agent application on the penultimate node, and thatapplication will subsequently establish a link-layer or physical-layer connection with the usernode.EX—13 ROUTING FUNCTIONS: The SSI end state operations concept supports data flow overmultiple possible network data paths. Forwarding of information is based on static ordynamic routing tables in the network-layer protocol with forwarding decisions based oninformation in the network-layer PDUs (as opposed to being driven by metadata ormanually sequenced operations).EX—14 DELAY-AWARE AND DELAY-UNAWARE OPERATIONS: The SSI end state will allowsupport for both delay-unaware operations (where short delay [
OperationsConceptfor a Solar System Internetwork (SSI)IOAG.T.RC.001.V1EX—15 REPORTING: Individual network nodes will report status information in standardizedformats to support network management and anomaly resolution.Page | 23
Big Market Research, Software Defined Networks (SDN) and Network Function Virtualization (NFV) Market Size, Share, Global Trends, Company Profiles, Demand, Insights, Analysis, Research, Report, Opportunities, Segmentation and Forecast, 2015-2020. Read full report & TOC @ http://www.bigmarketresearch.com/software-defined-networks-sdn-and-network-function-virtualization-nfv-forecasts-and-impact-on-network-operators-2015-2020-market
Software defined networking (SDN) and virtualization are poised to transform network and service architecture thanks to improvements in technologies that offer improved performance and lower costs. As the border between Cloud Computing and network infrastructure continues to blur, so does the demarcation between the network as a whole and those network elements (servers, terminals, etc.) that comprise the network. Communications Service Providers (CSP) will benefit from improved economics brought forth by Network Function Virtualization (NFV) as carriers leverage CPU virtualization and other Cloud techniques to migrate previously expensive network functions to cheaper general-purpose hardware running virtual machines.