Federal Aviation Administration Presented to the International Civil Aviation Organization...

Federal AviationAdministration

Presented

to the

International Civil Aviation Organization

Asia/Pacific Regional AMHS Workshop

Chennai, IndiaDate: 15-16 December, 2008

CAR/SAM Regional CAR/SAM Regional AMHS Transition PlanAMHS Transition Plan

2Federal AviationAdministration5-6 June 2008 25-6 June 2008 Federal AviationAdministration

Our Vision: Service and Safety• BACKGROUND

• This presentation highlights the efforts of the CAR/SAM ATN Task Force, which has been enforce for the past three years. The Task Force Fourth meeting will be held at the end of June 2008 in Santo Domingo, Dominican Republic.

• The scope of the CAR/SAM ATN Task Force is to– Ensure smooth transition from Aeronautical Fixed

Telecommunication Network (AFTN) to AMHS environment and

– Prevent any possible interruption in the AFTN and Air Traffic Voice service operation during the transition period.


State A

FDIO

DSRAFTN

Host

FAA

VSCSVSCS

AFTN

Voice Switch

State B

AFTN

Voice Switch

64 kbps

8 kbps 8 kbps

9.6 kbps9.6 kbps

ATC Voice and AFTN Configuration


Our Vision: Service and Safety

•Aruba

•Venezuela•Colombia

•Ecuador

•Peru

•Bolivia

•Chile

•Paraguay

•Uruguay•Argentina

•Brasil

•Guyane•Française

•Suriname•Guyana

•Belize

•Guatemala

•El Salvador

•Honduras

•Costa Rica

•Panama

•Nicaragua

•USA

•Bahamas

•Cuba

•Cayman•Islands

•Jamaica

•Haïti•Republica

•Dominican•a

•Puerto•Rico

•Trinidad•&

•Tobago

•Curaçao

•REDDIG

•Connection between Networks

•CAMSAT

•E-CAR

•MEVA

•IS Router

•BIS Router

•St Marteen

•St Vincent

•Guadeloupe

•St Lucia

•St Kitts•& Nevis

•Dominica

•Martinique

•Antigua

•Anguilla

•Montserrat

•Grenada

•B•a•r•b•a•d•o•s

CAR/SAM Existing International AFTN Backbone



• In 2006, the CAR/SAM region adopted AMHS over TCP/IP to replace their AFTN service.

• Various States in this region have obtained or are in the process of obtaining, the AMHS and AMHS/AFTN Gateway.

• The first AMHS service over IP will be implemented between Argentina and Paraguay, and it is projected for the middle of 2008.

CAR/SAM Regional Plan



Inter-Regional Trunk ConnectionIntra-Regional Trunk Connection

EUR Region

ASIA Region

AFI Region

CAR/SAM Region

VE

US

JMPE

HN AT

TTBB

CC

AR

HT

BR

AR: ArgentinaAT: AntiguaBB:BarbadosBR: BrazilCC: ChileHN: HondurasHT: HaitiJM: JamaicaPE: PeruTT: Trinidad and TobagoUS: United State of AmericaVE: Venezuela

National CAR/SAM Regional ATN

Backbone Architecture



7

Transitional Issues

• AMHS Network Protocols

• CLNP/TP4

• IPS-based networks

• MTA to MTA Communication

• Dual Operation of AMHS and Alternative Routing

• A well coordinated upgrade of the circuit data rate table will be needed to support alternative routing

• AFTN circuits Upgrades


8

Transitional Issues

Routing Policy should be developed to address the following:

• Intra-Region MTA routing during the AFTN/AMHS transition period.

• Intra-Region MTA routing at End-State Environment.

• Inter-Region MTA Routing during transition period.

• Inter-Region MTA Routing at End-State Environment.



9

Transitional Plan – New Requirement

Binary Universal Form Representation (BUFR) code

– BUFR code was developed by the ICAO OPLINK Panel.– BUFR code is used to provide graphic meteorological data.– BUFR code was targeted for distribution by AMHS because

AFTN can not support binary based messages.– BUFR code has been adopted by the WMO and the ICAO but

XML is also being considered.– The ICAO Regional Offices have been analyzing the BUFR

code to determine the impact to AMHS (AMHS X.500 based Directory Service versus modifying the MTA).


Our Vision: Servicand Safety•

10

Transitional Plan - IP

AMHSAMHS

AMHS AMHS

IPRouter

IPRouter

IPRouter

IPRouter

CAR/SAM Region

IPv4

BOUNDARYAMHS

BOUNDARYAMHS

IPRouter

IPRouter

IPv6

External Region

IPv4 Intra-Regional and IPv6 to External ICAO Regions


Our Vision: Service and SafetyProtocol Stacks for Current AMHS Applications

AMHSAPPLICATION

(Message Transfer Agent)

Presentation Layer

Session Layer

TP4

TP0RFC 1006

TCP

CLNP IPv4


Transitional Plan - IP

AMHSAMHS

AMHS AMHS

IPRouter

IPRouter

IPRouter

IPRouter

CAR/SAM Region

IPv4/IPv6

BOUNDARYAMHS

BOUNDARYAMHS

IPRouter

IPRouter

IPv6

External Region

IPv4 and IPv6 Intra-Regional, and IPv6 to External ICAO Regions


Protocol Stacks for Transition-Phase AMHS Applications

AMHSAPPLICATION

(Message Transfer Agent)

Presentation Layer

Session Layer

TP0RFC 1006

TCP

IPv4

TP0RFC 2126

TCP

IPv6


End State IPv6 for Intra-Region and Inter-Region

AMHSAMHS

AMHS AMHS

IPRouter

IPRouter

IPRouter

IPRouter

CAR/SAM Region

IPv6

BOUNDARYAMHS

BOUNDARYAMHS

IPRouter

IPRouter

IPv6

External Region


IP Transitional Issues

• The aeronautical communication industry (i.e., AMHS system providers) have not fully developed the MTA to support IPv6.

• The Technical Manual for the IPS will be finalized by the Aeronautical Communication Panel (ACP) in late 2008. However, ICAO Doc. 9880 Part II B for AMHS is now available.

• Initial implementations in the ICAO European Region are using AMHS over IPv4 in separate sub-regions. Two of these sub-regions are interconnected via IPv6 using a network address and protocol translation technique whereby IPv4 messages are converted to IPv6 across the interface and then back to IPv4.

• Many CAR/SAM member States have already implemented the AMHS or will replace the AFTN service in the near future.

• The Asia/Pacific region needs to [work out] resolve the network protocol issues with European and South American regions (ATN router or IP router).

• A global AMHS network coordination is required to ensure smooth operation.

• Implementing security measures.

• IP addressing scheme needs to be developed for AMHS


Evolving ATN Interconnection of A/G and G/G Routers

IDRP

IDRP

IDRP

IDRP

IDRP

IDRP

IDRP

ATNROUTER

ATNROUTER

ATNROUTER

ATNROUTER LAN

Sub-network

VDL

SAT

IP Network

VDL

VDLX.25/IP Sub-network

IDRP: Inter-domain Routing Protocol

IS-IS: Intermediate System-

Intermediate System Routing Protocol

SAT: Satellite

VDL: Very High Frequency (VHF) Data Link

LAN: Local Area Network

IP ROUTER

IP ROUTER

IP ROUTER

AMHS


Implementation Documents Needed

ICAO Regional ATN/AMHS Implementation Documents

CAR/SAM AMHS Network Status Table

IP Router ICD

CAR/SAM TCP/IP Routing Policy

IPv6 Address Scheme

AMHS and IP Router Compatibility Test Procedure

AMHS VPN Security

CAR/SAM AMHS Network Backbone

Trunk

AMHS Routing Policy

Directory Service CAR/SAM Directory Service

CAR/SAM ATN Task Force Task

Assignment


CAR/SAM Regional AMHS Implementation Documentation

AMHS Transition Plan would include the following appendices to address variety of issues:

Appendix I CAR/SAM AMHS Network Status Table: - Document AMHS implementation status of the

States

Appendix II CAR/SAM AMHS Network Backbone Trunks: - Document the Telecommunication

Backbone/circuits

Appendix III CAR/SAM TCP/IP Routing Policy: - Specify the routing for primary route and alternate

routes for each AMHS connection. It also specifies the regional backbone hubs and its policy to route traffic



Appendix IV IPv6 Addressing Scheme - Global address designation

Appendix V IP Router Interface Control Document - Specify the lower three layers of the router and Appendix VI AMHS Routing Policy

- Address MTA to MTA within the region and MTA to other MTA outside region during the transition and end state (global network protocol compatibility environment)

Appendix VII AMHS Addressing Scheme (Slide 17 shows Directory Service not AMHS Addressing Scheme)



Appendix VIII CAR/SAM Directory Service Issue needs to be evaluated

Appendix IX AMHS and IP Router Compatibility Test Procedure Ensure hardware and software will be compatible between different platforms

Appendix X AMHS VPN Security Address network protection measure

Appendix XI CAR/SAM ATN Task Force Task Assignments

Assignment Documents actions and efforts by the state members


OPERATION CONSIDERATIONS

MTA to any MTA (via IP) • This is the end state goal. In the interim, the regional major hub

should take active role to ensure the smooth operation.

Dual operation of AFTN and AMHS • Dual Operation during transition period will require regional major

hubs to act quickly to prevent significant network problems.

Regional AMHS Management Center • A Regional AMHS Management Center should be designated to

timely coordinate with other regions and within region to support the AMHS cutover activities as well as AMHS operation.

System performance standards • Develop System Performance Standards to address legal

recording, tracking message, delivering of messages, etc.


Acronyms

• AFS Aeronautical Fixed Service• ACP Aeronautical Communication Panel • AFTN Aeronautical Fixed Telecommunication Network• AIDC Air Traffic Service Inter-Facility Data Communication• AMHS Air Traffic Service Message Handling System• ATC Air Traffic Control• ATN Aeronautical Telecommunication Network• BUFR Binary Universal Form Representation • CIDIN Common ICAO Data Interchange Network• CLNP Connection Less Network Protocol• DOTS Dynamic Oceanic Tracking System• FASID Facilities and Services Implementation Document • FIR Flight Information Region• ICAO International Civil Aviation Organization• IDRP Inter Domain Routing Protocol• IP Internet Protocol• IPS Internet Protocol Suites• MTA Message Transfer Agent• MTCU Message Transfer and Control Unit• MTS Message Transfer System• NOTAM Note to Air Men• OSI Open System Interface• SARP Standard and Recommended Practices• SNDCF Sub Network Dependent Convergence Function• UA User Agent• WMO World Meteorological Organization

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