Introduction to ATN Routers Mark A. Brown Oki Electric Industry Co., Ltd. © 2003 Oki Electric Industry Co., Ltd.

Slides:



Advertisements
Similar presentations
Aaron Johnson with Joan Feigenbaum Paul Syverson
Advertisements

Direction générale de lAviation civile direction de la Technique et de lInnovation direction des services de la Navigation aérienne AGCFG meeting Brussels.
Computer Networks TCP/IP Protocol Suite.
1 UNIT I (Contd..) High-Speed LANs. 2 Introduction Fast Ethernet and Gigabit Ethernet Fast Ethernet and Gigabit Ethernet Fibre Channel Fibre Channel High-speed.
Virtual Trunk Protocol
1 Security for Ad Hoc Network Routing. 2 Ad Hoc Networks Properties Mobile Wireless communication Medium to high bandwidth High variability of connection.
OSPF 1.
1 An Update on Multihoming in IPv6 Report on IETF Activity IPv6 Technical SIG 1 Sept 2004 APNIC18, Nadi, Fiji Geoff Huston.
Network Monitoring System In CSTNET Long Chun China Science & Technology Network.
Security Issues In Mobile IP
Interconnection: Switching and Bridging CS 4251: Computer Networking II Nick Feamster Fall 2008.
Doc.: IEEE /1191r5 Submission November 2004 Mike Moreton, STMicroelectronicsSlide 1 AP Architecture Thoughts Mike Moreton, STMicroelectronics.
Document #07-12G 1 RXQ Customer Enrollment Using a Registration Agent Process Flow Diagram (Switch) Customer Supplier Customer authorizes Enrollment.
Document #07-12G 1 RXQ Customer Enrollment Using a Registration Agent Process Flow Diagram (Switch) Customer Supplier Customer authorizes Enrollment.
Document #07-2I RXQ Customer Enrollment Using a Registration Agent (RA) Process Flow Diagram (Move-In) (mod 7/25 & clean-up 8/20) Customer Supplier.
SIP/2012/ASBU/Nairobi-WP/19
Presented by Jean-Yves PIRAM
ICAO ACP WG-N meeting Use of IP in ARTAS
AMHS/SWIM Seminar Chiang Mai, Thailand 5-6 March 2012
FAA AMHS Subnetwork Overview
FANS (Future Air Navigation System) Flight Crew Procedures
1 Glenn Research Center ICAO ACP Working Group M Iridium Sub Group Overview Bob Kerczewski Mike Meza NASA Glenn Research Center Iridium AGC-FG and NexSAT-SG.
09/03 Page 1 FAA AMHS Implementation Plan Bangkok, Thailand November 19, 2003 FAA AMHS Implementation Plan Bangkok, Thailand November 19, 2003.
ICAO Aviation Considerations for Internet Mobility Services ICAO WG N-1 Meeting #5 Montreal, Canada November 7-10, 2005 ACP/SWGN1-5 th meeting FL 502.
F E D E R A L A V I A T I O N A D M I N I S T R A T I O N A I R T R A F F I C O R G A N I Z A T I O N FAA/NASA Weather Information Communications Flight.
1 C ENTRE D'ETUDES DE LA NAVIGATION AERIENNE PHARE Aeronautical Telecommunication Network: PATN By Gérard Mittaux-Biron PATN Project Leader CENA.
NexSAT SG#7 9 th March 2006 Future Communications Infrastructure Jacky Pouzet Communication Domain manager European Organisation for the Safety of Air.
Communicating over the Network
Protocol layers and Wireshark Rahul Hiran TDTS11:Computer Networks and Internet Protocols 1 Note: T he slides are adapted and modified based on slides.
Jennifer Rexford Princeton University MW 11:00am-12:20pm Logically-Centralized Control COS 597E: Software Defined Networking.
ATN 99 Service Technique de la Navigation Aérienne 1 ATN Activities & Plans ATN in FRANCE FOR SAFETY REASONS MAIN FUTURE DATA/LINK ATSC WILL BE ATN.
Chapter 1: Introduction to Scaling Networks
Networks: Introduction 1 CS4514 Computer Networks Term B06 Professor Bob Kinicki.
Local Area Networks - Internetworking
TCP/IP Protocol Suite 1 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chapter 2 The OSI Model and the TCP/IP.
Chapter 9 Introduction to MAN and WAN
© 2008 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 1 Chapter 8: Subnetting IP Networks Network Fundamentals.
Mobile IP. 2 N+I_2k © 2000, Peter Tomsu 02_mobile_ip Evolution of Data Services Mobile IP GSM GPRS CDMA Other Cellular Circuit Switched Data Today Packet.
Christophe Jelger – CS221 Network and Security - Universität Basel Christophe Jelger Post-doctoral researcher IP Multicasting.
The Future of PETAL Technology
1 Network Address Translation (NAT) Relates to Lab 7. Module about private networks and NAT.
VHF Digital Link Mode 2 Deployment Strategy Vic Nagowski
1 Internet Protocol: Routing IP Datagrams D. E. Comer, “Internetworking with TCP/IP: Principles, Protocols and Architectures”, Ch. 8, Prentice Hall, 2000.
IPv6 Routing.
© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 1 EN0129 PC AND NETWORK TECHNOLOGY I NETWORK LAYER AND IP Derived From CCNA Network Fundamentals.
© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public 1 ETHERNET Derived From CCNA Network Fundamentals – Chapter 9 EN0129 PC AND NETWORK TECHNOLOGY.
1 Introduction to Network Layer Lesson 09 NETS2150/2850 School of Information Technologies.
25 seconds left…...
1 © 2003, Cisco Systems, Inc. All rights reserved. CCNA TCP/IP Protocol Suite and IP Addressing Halmstad University Olga Torstensson
VPN AND REMOTE ACCESS Mohammad S. Hasan 1 VPN and Remote Access.
ATN ‘99, London, 23 September 1999 David Russell ATS Market Manager, SITA AIRCOM SITA AIRCOM Data Link Service.
McGraw-Hill©The McGraw-Hill Companies, Inc., 2001 Chapter 16 Integrated Services Digital Network (ISDN)
© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 1 1 Link-State Routing Protocols Routing Protocols and Concepts – Chapter.
IPv6 The New Internet Protocol Integrated Network Services Almerindo Graziano.
Integrated information and telecommunications solutions AIRCOM Implementation VHF Digital Link Presented by Philip Clinch to ATN 2001 Conference 19 September.
FAA/JCAB ATN & AMHS Trial Varadero, Cuba May 2002 Presentation ATN 3.2 by H. Tran.
BCI’s Aeronautical Telecommunication Network (ATN) Router
Networking Theory (Part 1). Introduction Overview of the basic concepts of networking Also discusses essential topics of networking theory.
CS335 Networking & Network Administration Tuesday, April 20, 2010.
Presentation to: Name: Date: ICAO Asia-Pacific AMHS Activities & Status ICAO Asia-Pacific AMHS Activities & Status ATS Message Handling System (AMHS )
Asia/Pacific AMHS Implementation Workshop AMHS Description and Implementation December 15-16, 2008 Chennai, India.
IPv6 integration with the ATN Tony Whyman Helios Information Services Ltd.
Department of Electronic Engineering City University of Hong Kong EE3900 Computer Networks Introduction Slide 1 A Communications Model Source: generates.
AMHS WORKSHOP POLICY & DOCUMENTATION. AMHS WORKSHOP POLICY & DOCUMENTATION  Operational Requirements for facilities or services are established through.
Presented by Philip Clinch on 27 September 2000 at ATN 2000 Aeronautical Telecommunications Services.
William Stallings Data and Computer Communications
Department of Electronic Engineering City University of Hong Kong EE3900 Computer Networks Protocols and Architecture Slide 1 Use of Standard Protocols.
IP Security (IPSec) Matt Hermanson. What is IPSec? It is an extension to the Internet Protocol (IP) suite that creates an encrypted and secure conversation.
1 Introduction to ISIS AfNOG 2011 SI-E Workshop. 2 IS-IS Standards History  ISO specifies OSI IS-IS routing protocol for CLNS traffic A Link State.
FAA/JCAB ATN & AMHS Trial
Presentation transcript:

Introduction to ATN Routers Mark A. Brown Oki Electric Industry Co., Ltd. © 2003 Oki Electric Industry Co., Ltd.

2 Contents Introduction to ATN routers. ATN Deployment in the Asia/Pacific Region Future Issues

3 1. Introduction to ATN Routers

4 Routers in the ATN Air-to-ground sub-network (radio) Ground sub-network (wide-area network) A/G ATN Router End System (CPDLC etc) Console G/G ATN Router CM Air Traffic Control Facility G/G ATN Router Console Airline AOC ES Aircraft End System Airborne ATN Router Operational Application ATN Routers perform data relay and routing functions for ATN CLNP data packets.

5 ATN Router functions: Data Relay ES #2 (e.g. AMHS) APAC ATN Backbone Network State A Backbone BIS #2 State C Backbone BIS #4 State B Backbone BIS #3 ES #1 (e.g. AMHS) ATS Facility BIS #1 ATS Facility BIS #5 ATN routers relay data packets towards their destinations. The path across the network is determined according to least hops, ATSC class etc. Least hops route: ES#1BIS#1 BIS#2BIS#3BIS#5ES#2

6 ATN Router functions: Multiple A/G sub-networks Airline Operations Centre Ground ATN VDL3 GES AMSS Radio A/G Router G/G Router ATCC app. (e.g. CPDLC) VDL2 ATS via VDL-3 AOC via VDL-2

7 ATN Router functions: Dynamic Routeing Using dynamic routeing, routers can automatically detect damaged network elements and re-route traffic. e.g. due to failure of link between BIS#2 and BIS#3, traffic from ES#1 to ES#2 re-routed via BIS#4. ES #2 (e.g. AMHS) APAC ATN Backbone Network State A Backbone BIS #2 State C Backbone BIS #4 State B Backbone BIS #3 ES #1 (e.g. AMHS) ATS Facility BIS #1 ATS Facility BIS #5

8 ATN Router functions: Priority Handling Radio A/G Router AOC D-ATIS ADS, CPDLC Multiple applications compete for the narrow pipe to the aircraft. ATN routers handle CLNP NPDUs according to priority when contention for resources or congestion are occurring: –Lower transit delay for higher priority messages –Lower probability of higher priority messages being dropped ATIS AOC CPDLC ATIS AOC CPDLC Normally the router forwards each packet down a link in the order in which it arrives. If a link is congested, CLNP NPDUs will start queueing up waiting to be sent,. CLNP NPDUs can be re-ordered if the link is congested depending on their priority. Normally the router forwards each packet down a link in the order in which it arrives. If a link is congested, CLNP NPDUs will start queueing up waiting to be sent,. CLNP NPDUs can be re-ordered if the link is congested depending on their priority.

9 ATN Router: Protocols Domain #B ATN Router (BIS) ES ATN Router (BIS) ES ATN or IS Router ES IDRP ES-IS IS-IS Domain #A The ATN is based on ISO Open System Interconnect (OSI) protocols. Protocols: -Network layer protocol: CLNP -Routeing protocols: - ES-IS: between End Systems and routers - IS-IS: within a routeing domain - IDRP: between routeing domains Protocols: -Network layer protocol: CLNP -Routeing protocols: - ES-IS: between End Systems and routers - IS-IS: within a routeing domain - IDRP: between routeing domains ATN router functions are defined in ICAO Doc 9735-AN/956 sub-volume V. Ground/Ground (Class 4) and Air/Ground (Class 5) ATN routers must implement the IDRP routeing protocol. All Class 4 and Class 5 routers are Boundary Intermediate Systems (BIS).

10 Addressing within the ATN Addresses are hierarchical, based on nested address domains. All addresses within a domain have the same address prefix. IS O IC D Internati onal Authority Routing Domain Identifier (RDI) Area Identifier System Identifier Selector (1 Octet) Area Address (11 octets)System Identifier (6 octets) ATN NSAP/NET Address A Common Fixed ATSC domain ICAO Asia region Japan System ID (router) or 01 (end system) e.g. JCAB ATN router NET ATN Domain Fixed ATSC Mobile ATSC C1 Mobile AINSC Fixed AINSC Asia Japan China NAM USA

11 Addressing and its relationship to routeing Hierarchical addressing and domains greatly simplify routeing: –Reduces routeing information exchanged by allowing routers to advertise aggregate prefixes rather than lists of addresses. –The router only has to inspect the prefix of a CLNP packets address to determine where to send it. Thailand Japan Singapore I can reach Japan I can reach Singapore & Thailand I can reach Thailand I can reach Singapore and Japan IDRP update PDU contents = I can reach = address prefix

12 ATN Router Functions: Sub-network interface CLNP LLC Type 1 MAC CSMA/CD ES ATN Router LLC Type 1 MAC CSMA/CD X.25 VC) Routing Protocols ES-IS,IS-IS,IDRP CLNP Routing Protocols ES-IS, IS-IS,IDRP CLNP LLC Type 1 MAC CSMA/CD X.25 VC) ATN Router AP/ULCS CLNP LLC Type 1 MAC CSMA/CD ES LAN (Ethernet)WAN AP/ULCS LAN X.25 circuit or PSN LAN (Ethernet)

13 2. ATN Deployment in the Asia/Pacific Region

14 The APAC Regional ATN Ground Network Source Fifth ATN Transition Task Force Meeting – WP

15 Use of APAC ATN Network for Air-Ground ATN A/G BIS GES MTSAT G/G BIS AES ES Other StateJapan ATN communication CPDLC,ADS,DFIS

16 ATN R&D in Japan Japan has been carrying out ATN development since –Joint R&D between the Electronic Navigation Research Institute (ENRI) and Oki Electric Industry Co ,7 ATN RouterATN Applications G/G Router development, tests Connection test with Eurocontrol Connection test with Airservices Australia (ASA) A/G Router development Connection test with experimental AMSS ATN security development (A/G router) ATN security tests VDL-3 GNI interface development VDL-3 connection test CPDLC connection test with Eurocontrol ADS test with Eurocontrol CPDLC,ADS tests with ASA CM security development CM security tests D-FIS ATIS development & test D-FIS METAR development & test

17 Experimental architecture Domain #B Japan(Tokyo) G/G Router C Domain #C Eurocontrol(Paris) TRANSPAC VENUS-P INS-P Domain #A Japan(Tokyo) G/G Router A Ground CPDLC G/G Router B Airborne System Simulator Airborne CPDLC ATC W/S ENRI CPDLC Trial with Eurocontrol

18 Japan Civil Aviation Bureau ATN Activities JCAB is implementing an ATN router backbone site and an AMHS service. –US/Japan AMHS service: March 2004 –Hong Kong/Japan AMHS service: September 2004 MTSAT 1 –SBASS service –AMSS service Possibly future ATN communications via MTSAT

19 3. Future Router Issues

20 ATN Security Technical solution specified in SARPs Edition 3 Provides authentication of peer and secures end- to-end communication between applications. –Allows you to know who you are talking to. Ensures that unknown third parties cant intrude and introduce false data, or modify data. –Does not yet include encryption (under development by ACP WG N) Router security –Authentication of peer BIS. –Secures IDRP packets – prevents disruption of the network by injection of fake IDRP packets by masquerading BIS routers.

21 ATN Security: Example ISH-PDU Public key certificate required ISH-PDU Public key certificate not required OPEN-PDU Airborne BIS#1 A/G BIS#2 SessionKey Generation Received certificate Extract Public Key #2 Private Key #1 SessionKey OPEN-PDU Public key certificate required Certificate SessionKey Generation Certificate from CA/RA Extract Public Key #1 SessionKey Tag Generation Generate SessionKey UPDATE-PDU KEEP-ALIVE-PDU IDRP information Tag#A Tag Verification SessionKey Tag Verification SessionKey Tag B Tag Generation Generate SessionKey Certification Authority CA & Registration Authority RA) Certificate & key generation & issue Registration/distribution Public Key #2 Public Key #1 Private Key #2 Tag#A Tag B UPDATE-PDU KEEP-ALIVE-PDU IDRP information Tag#B Tag#A using Source: Electronic Navigation Research Institute Research Results 2003 Registration/distribution Verify using

22 ATN Security: Issues Technical solution is complete, but some implementation issues remain: e.g. –Protocols for certificate retrieval not specified in SARPs. (ATN Directory? LDAP?) Many institutional issues remain to be resolved before security can be deployed: e.g. –Public Key Infrastructure establishment and certification. –Key distribution and management Particularly for avionics.

23 ATN has facilities to allow different sub-network types to be adapted to carry ATN: –e.g. ISO8208 (X.25), Ethernet, mobile sub-networks, etc. ACP Working Group N is developing an SNDCF that will allow use of IP sub-networks for carrying ATN traffic. –CLNP packets are transported over an IP network encapsulated inside IP packets. –The IP SNDCF is applicable to IPv4 and IPv6. IPv6 preferable as an aeronautical communication ground network because of built-in security (IPsec), priority handling, greater address space etc. Support for IP sub-networks User dataCLNP HeaderUser dataCLNP Header encapsulation decapsulation IP Header User dataCLNP Header IP Header User dataCLNP Header IP network CLNP (ATN) level IP (sub-network) level

24 IP Sub-Networks for ATN: Ex. IP between domains IP Router LAN (ATN over Ethernet) ATN RouterIP network IP Router ATN Router LAN (ATN over Ethernet) ATN over IP DSU LAN (ATN over Ethernet) DSU ATN Router ATN over X.25 point- to-point circuit ATN Routers relay CLNP (ATN) data packets between IP, X.25 and LAN sub- networks. A common IP network infrastructure might be used for ATN and other applications: e.g. VoIP etc.

25 IP SNDCF Status Draft SARPs developed, being validated. Due to be discussed by ACP WGN in March 2004 meeting. Publication in SARPs to expected follow (amendment to Edition 3, or in Edition 4 after ACP approval in 2005).

26 For further information, contact: Mark BrownTakefumi Nakamura Marine & Aeronautical Solutions Division System Solutions Company Oki Electric Industry Co., Ltd Shibaura, 4-chome, Minato-ku, Tokyo , Japan Telephone: +81 (3) Facsimile: +81 (3) Thank you for your attention!