Transcript P13 IPV6 IPV4 Integratin Issues

AMHS Workshop
Chennai, India
December 15-16, 2008
IPv4, IPv6 Integration
Tom McParland
BCI
IP Integration Issues







Asia-Pacific Network of Backbone and NonBackbone Systems
Types of Connections to Non-Backbone Systems
Connection to Non-Backbone AFTN Systems
Connection to Non-Backbone OSI AMHS Systems
Connection to Non-Backbone IPS AMHS Systems
Assumed IP Version
Issues with IPv6 Integration
Asia-Pacific Backbone and Non-Backbone Systems
Types of Connections to Non-Backbone Systems


Backbone Systems are to support OSI
connections with one another
Backbone Systems may support the
following connections to Non-Backbone
Sytems:
–
–
–
AFTN Connection
OSI AMHS Connection
IP AMHS Connection
Connection to Non-Backbone AFTN Systems
AFTN Terminals
AFTN Terminals
Store
Store
Store
MTA
Forward
Backbone
AMHS/AFTN
System
ATN
Backbone
Network
MTA
Forward
Backbone
AMHS/AFTN
System
X.25 Point-to-Point
Forward
Non-Backbone
AFTN
System
Connection to Non-Backbone AFTN Systems
AFTN
Terminal
AFTN
Terminal
Local
Interface
Forward
Local
Interface
MTCU
MTCU
MTA
MTA
TP4
TCP
ATN/IP Network
Infrastructure
Backbone
AMHS/AFTN
System
Forward
Forward
TP4
ATN Network
Infrastructure
TCP
ATN/IP
Network
Infrastructure
AFTN
Network
Infrastructure
Backbone
AMHS/AFTN
System
AFTN Network
Infrastructure
AFTN
Network
Infrastructure
Non-Backbone
AFTN
System
Connection to Non-Backbone OSI AMHS Systems
AFTN Terminals
AFTN Terminals
Store
Store
Store
MTA
Forward
Backbone
AMHS/AFTN
System
MTA
ATN
Backbone
Network
MTA
Forward
Backbone
AMHS/AFTN
System
ATN
Access
Network
Forward
Non-Backbone
AMHS/AFTN
System
Connection to Non-Backbone OSI AMHS Systems
AFTN
Terminal
AFTN
Terminal
Local
Interface
Forward
Local
Interface
MTCU
MTCU
MTA
MTA
TP4
Backbone
AMHS/AFTN
System
Forward
Forward
TCP
ATN/IP Network
Infrastructure
MTCU
TP4
ATN Network
Infrastructure
MTA
TP4
TCP
ATN/IP Network
Infrastructure
Backbone
AMHS/AFTN
System
ATN Network
Infrastructure
ATN Network
Infrastructure
Non-Backbone
AMHS/AFTN
System
Connection to Non-Backbone IP AMHS Systems
AFTN Terminals
AFTN Terminals
Store
Store
Store
MTA
Forward
Backbone
AMHS/AFTN
System
MTA
ATN
Backbone
Network
MTA
Forward
Backbone
AMHS/AFTN
System
IP
Access
Network
Forward
Non-Backbone
AMHS/AFTN
System
Connection to Non-Backbone IP AMHS Systems
AFTN
Terminal
AFTN
Terminal
Local
Interface
Forward
Local
Interface
MTCU
MTCU
MTA
MTA
TP4
Backbone
AMHS/AFTN
System
Forward
Forward
TCP
ATN/IP Network
Infrastructure
MTCU
TP4
ATN Network
Infrastructure
MTA
TCP
TCP
ATN/IP Network
Infrastructure
Backbone
AMHS/AFTN
System
IP Network
Infrastructure
IP Network
Infrastructure
Non-Backbone
AMHS/AFTN
System
Assumed IP Version


The assumed IP version to be implemented
in Asia/Pac by 2011 is IPv4.
The “dual-stack” Backbone MTAs support:
–
–

TP4 over CLNP or
TP0-RFC1006-TCP over IPv4
The ATN Routers support the IPv4 SNDCF
and the IPv6 SNDCF which provides
encapsulation of CLNP within IPv4 or IPv6
Issues with IPv6 Integration



1.
ICAO’s goal is that the next generation IPS ATN will be based
on IPv6.
Will require development of Addressing Plan, AS Numbering
Plan, and Routing Policy
The issues for Asia/Pac are concerned with how and when to
implement IPv6.
As IPv6 SNDCF in Routers

Already available from some vendors

There is no change required for the AMHS System

Logical first step in transition to IPv4 Internetwork
Issues with IPv6 Integration (continued)
2.
As “dual-stack” in Routers and AMHS system
 Not yet available by ATN Router vendors
 Upgrade will likely be more costly than COTs
Router
 Requires change to AMHS system
 Advantage would be to operate with current X.25
front-end switch
 ATN Router is still available to support airground applications
Issues with IPv6 Integration (continued)
3.
As separate Router with dual-stack” AMHS system
 Available as COTS product
 Less costly than ATN Router upgrade
 Requires change to AMHS system
 Will not operate with current X.25 front-end
switch
 ATN Router may still be needed to support airground applications
Support for Air-Ground Applications in Asia-Pac
ATN
G/G
RTRs
ATN
A/G
RTRs
ATN
G/G
RTR
Air/Ground
Subnetwork
AUTOMATION SYSTEMS
ATN
Air-Ground
Application
ATN ES
ATN
G/G
RTR
ATN
Backbone
Network
ATN Air-Ground Applications:
CPDLC
Context Management
ADS-C
FIS
ATN
G/G
RTR
ATN
G/G
RTR
ATN
G/G
RTRs
ATN
A/G
RTRs
Air/Ground
Subnetwork