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This draft provides an overview of the Aeronautical Telecommunications Network (ATN), focusing on Air Traffic Services and Airline Operational Services while excluding Passenger Communications. It discusses terminology, node relationships, networks, certificates, ACSP, ANSP, and future considerations for PKI implementation. Relevant topics include trust relationships, LMNs within AOS domain, HA location, and cost considerations for airlines contracting ACSPs. Supported by the European Commission through the NEWSKY project.
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ATN Topology Considerations for Aeronautical NEMO RO draft-bauer-mext-aero-topology-00 Christian Bauer, Serkan Ayaz 72nd IETF, MEXT WG
Overview • Draft tries to provide an overview of the Aeronautical Telecommunications Network (ATN) • Focus is on • Air Traffic Services (ATS) • Airline Operational Services (AOS) • ignores Passenger Communications • Terminology, involved nodes • Networks • Certificates
Networks • Air Communications Service Provider (ACSP) • like an Internet Service Provider in the „normal“ world • Operates air/ground access network(s) • Airline chooses one of them for AOS • Air Navigation Service Provider (ANSP) • Manages air traffic: FAA, Eurocontrol, DFS, AENA, etc. • Will have to provide air/ground communications network in the future (at least in Europe) • Either by running it‘s own a/g access network • Or by contracting an ACSP
Trust Relationships • Airlines always contract an ACSP (due to AOS) • Each ANSP also has a relationship to an ACSP • PKI discussion • Mentioned in requirements document • As of now: no PKI (single root or bridge CA) that covers all ACSP, ANSP and Airline entities/networks • Future: ? • Currently: X.509 certificates for Secure ACARS • For AOS, End2End: MNN and CN both belong to airline • CA can be Airline itself or Service Provider
Questions / Discussion • LMNs within ATS/AOS domain • Mentioned because it is stated like this in the Reqs-document • Relevant for AOS • Not for ATS (!) • HA location • ACSPs are the air/ground communications providers • Airlines already have contracts to ACSPs anyway (for AOS) • Cost: redundancy, high-availability • Even large airlines have <1000 aircraft • Aircraft without ACSP • And therefore without MSP
Thanks This work has been partially supported by the European Commission through the NEWSKY project.