Transcript SNG1-07-WP710 GG IP Communications _v10

Ground/Ground IP Communications:
European experience and perspectives
Eivan Cerasi
DAS/CSM
ACP/WGN/SG1 7th Meeting
27 March 2006, Malmo
European
Organisation for1the Safety of Air Navigation
ACP/WGN/SG1#7
Content
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PEN ( Pan-European Network)
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iPAX-TF
PEN: planning and implementation
FMTP (Flight Message Transfer Protocol)
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Why we need an IP PEN?
Dependence on X.25
International Data
• OLDI over X.25
• ASTERIX over X.25
• AFTN/CIDIN over X.25
• CFMU/CRCO/EAD over
separate IP networks
National Services
• Internal IP/X25 applications
• X25 Links to SITA/ARINC
• Management, etc..
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IPAX Task Force & Trials (2001-2004)
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WAN trials to support R&D activities to plan migration from
X.25 to IP:
 12 European ANSPs, 22 logical interconnections
 various lower media (VPN, Internet, LL, ISDN, MW)
 14 European sites + NASA connected via IPv6
 Directory services (DNS)
 IP security (IPsec and firewalls)
 X.25 over TCP/IP
 OLDI over TCP/IP data exchange
 ASTERIX over IP data exchange
 AMHS over TCP/IP
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Outcome of iPAX-TF and Recomendations
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There are no show-stoppers to use of IP for ATC applications
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Porting existing applications to IP may require application
adaptations (ex: TCP client/server, TCP byte stream, IP addressing)
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All UDP-based systems must be designed to mitigate
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Destination UDP or TCP Port Numbering must be standardized
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out of sequence and lost UDP/IP datagram's
repetition of identical UDP/IP packet (can happen in failure situation of IP multicast)
AMHS (RFC2126: 102), FMTP (8500), ASTERIX over IP (8600)
There are IPv4 address conflict problems at international level
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ACP/WGN/SG1#7
End-systems with international access should be dual-stacked (IPv4/v6) by 2009 (IPv6
is the standard network protocol to which all applications should converge to)
International Multicast, VoIP and MobileIP best supported over IPv6
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Pan-European Network
PEN
Provider's end-to-end responsability
CPE at a first
location serving a
network
Switch at POP
im
Pr
Network
Sec
o
nda
ar
hy
yP
Switch at POP
Switch at POP
sic
Core Network
Network
ry P
h ys
ical
Site or network with
attachment at one
location
Path
Switch at POP
CPE at a
location serving
a user or
network
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Pa
al
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Switch at POP
CPE at a second
location serving a
network
Network with
attachments at two
separate locations
What is PEN?
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Pan European IP network service of the ATM sector which will
ultimately carry all data and voice applications
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A multi-protocol service (supporting both IPv4 and IPv6)
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Initially likely to be limited to multi-protocol (IPv4/IPv6) data services
acting as a core backbone interconnecting existing IP national
networks
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A scalable backbone capable of supporting multicast and voice at a
later stage
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PENS Outlook and Timescales
2005-2009
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X25 -> IP migration has started leading to a mixed X.25/IP
environment
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Additional ECIP and Implementing Rules to be further developed
ANSP X.25 application/systems are being migrated to IP
June 2006: PEN Call for Interest
January 2007: PEN Call for Tender
January 2008: Deployment of PEN and operational
evaluation/validation
Summer 2008: initial IOC
2010+ : Application and Service extension
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Voice, A/G applications, International Multicast, ….
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Application Migration Status to IP
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OLDI communications have been adapted to TCP/IP
and pre-operational trials were successful
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Flight Message Transfer Protocol (based on IPv6)
AFTN/CIDIN is being migrated to AMHS over TCP/IP
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ECIP
COM
04
First operational link between Madrid and Frankfurt, IPv4 endsystems but IPv6 WAN interconnectivity)
12/2007
ECIP
COM
05
Surveillance distribution is converging to ASTERIX over
IP
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This impacts surveillance systems (RMCDE, ARTAS, ModeS, ….)
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CFMU/EAD/CRCO are based on IP
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Voice services over IP are being evaluated by EUROCAE
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12/2007
IP and PEN
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No immediate changes within ANSP IPv4 private networks
who can migrate to IPv6 at their own pace
Build an IPv6 addressing scheme independent of ISPs,
VPNs and topology
IPv4/ IPv6 dual-stack approach where possible
Standard multi-protocol IP routers to resolve overlapping
IPv4 address space, co-existence of IPv4/IPv6 and
support full migration to IPv6 (beyond 2010)
Make use of IPv4/v6 address translation techniques if
necessary but highly recommend IPv6 end-to-end
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IPv6 Unicast Address Scheme
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Following the iPAX-TF work, EUROCONTROL has become an LIR
for allocation and assignment of IPv6 addresses on behalf of its
stakeholders
RIPE Responsibilty
(32 bits)
3
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FP
F1
3 bits
TLA ID
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Sub-TLA
Net.
Prefix
v4/
v6
F2
7 bits
1 bit
5 bits
Common Responsibilty
(Coordination Body)
(16 bits)
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Res.
NLA ID
Site
Location
variable bits
16
64
SLA ID
LAN
Interface ID
ESI
variable bits
64 bits
ANSP Authority
(80 bits)
IPv6 Address Example
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EUROCONTROL has been allocated address 2001:4B50::/32
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From this range, ROMATSA has been sub-allocated with
2001:4B50:0940::/42 which they can advertise at their border.
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ROMATSA has then been assigned with /48 network prefixes to
number their systems. These addresses are registered in the RIPE
database and are indicated as being maintained by the
EUROCONTROL Agency.
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Sub-allocations have been planned for ANSPs, Airports, PanEuropean users, Regional Networks, EUROCONTROL facilities.
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IPv6 Sub-Allocation Scheme
Organisation
Network
Prefix
Inter-organisational links
2001:
4B50:
0040:
Albania (AL)
ANTA
2001:
4B50:
0080:
Armenia (AM)
ARMATS
2001:
4B50:
00C0:
Austria(AT)
Austro Control
2001:
4B50:
0100:
Azerbaijan (AZ)
AZANS
2001:
4B50:
0140:
Belarus (BY)$
BELAERONAVIGATSIA
2001:
4B50:
0180:
Belgium (BE)
Belgocontrol
2001:
4B50:
01C0:
Bosnia and Herzegowina (BA)
BHDCA
2001:
4B50:
0200:
Bulgaria (BG)
ATSA Bulgaria
2001:
4B50:
0240:
Country
/42
.
.
.
Regional
Germany and Benelux
CEATS
2001:
4B50:
1080:
Central Europe
RAPNET
2001:
4B50:
10C0:
European
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Backbone (future provision)
2001:
4B50:
2080:
Eurocontrol
Bretigny
2001:
4B50:
20C0:
Eurocontrol
CFMU
2001:
4B50:
2100:
Eurocontrol
CRCO
2001:
4B50:
2140:
Eurocontrol
CSPDU
2001:
4B50:
2180:
Eurocontrol
EURO HQ
2001:
4B50:
21C0:
Eurocontrol
Luxembourg
2001:
4B50:
2200:
Eurocontrol
Maastricht UAC
2001:
4B50:
2240:
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FMTP
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ECIP Objective COM-04 (goodwill and only for international links)
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SES Implementing Rule (legislation both international/national)
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FMTP rule is approved but pending final formatting prior its publication
The Rule will mandate a EUROCONTROL Specification called FMTP
Should be published summer 2006
FMTP ETIC Test Tool – version 3.0 supports both X.25 and TCP/IP
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ACP/WGN/SG1#7
Simulate systems’ communication partners
Give an open access and a total control on all aspects of the protocol
Send user- and protocol-defined messages
Receive and process user- and protocol-defined messages
Write and play an operational scenario
Live monitoring and logging of all events
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More information
Contact:
Eivan CERASI
Email:
Telephone:
[email protected]
+32 2 729 3791
EUROCONTROL Network SubDomain:
http://www.eurocontrol.int/communications/public/standard_page/com_network.html
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