SLE Routing - Simplified Station Access for Mission Operations
Holger Dreihahn · SpaceOps 2012 Conference · 2012
In the recent years ESA has adopted the CCSDS Recommendations for Space Link Extension (SLE) transfer services [1] as a standard interface for their TTC effectively the SLE User connects to the station only. This paper discusses in detail the requirements for the SLE Routing. Reliability and backwards compatibility, as well as failover scenarios and interoperability considerations are covered. We will discuss these requirements in the light of several implementation options. The importance of minimum impact on the current infrastructure to enable a robust, costand schedule-efficient solution is highlighted. The paper concludes with the trade-off of the considered options, which range from solutions based on connection routing to dynamic DNS (Domain Name Service) based approaches, and the preferred candidate solution. Finally, the current status is presented.