JCSA2013 04 Laurent Toutain - La frange polymorphe de l'Internet

La Frange Polymorphique

de l’Internet

Laurent Toutain, Pascal ThubertJune 26, 2013

Internet

JCSA 2013 Paris 9 Juillet

ITS DTN

PAN WSN

Internet

TCP UDP

HTTP CoAP . . .

Interface

TCP UDP

HTTP CoAP . . .

Interface

TCP UDP

HTTP CoAP . . .

Interface

Common LanguageInterconnection

TCP UDP

HTTP CoAP . . .

Interface

Common LanguageInterconnection

Ossification

ARESA2 Project

⌅ ANR Verso 2009 project⌅ Urban Wireless Sensor Networks

• AMI, Smart Grid, M2M. . .

⌅ One of the challenges: IPv6• Mesh network.• Minimize code footprint, minimize energy consumption.

6LN6LR

FE80::IID

6LN6LR

FE80::IID

RASLLAO,PIO|6CO,ABRO

SLLAO: Source Link-layer Address, PIO: Prefix Information, 6CO: 6LoWPAN Context, ABRO: Authoritative Border Router

6LN6LR

FE80::IID

RSSLLAO

6LN6LR

FE80::IID

RASLLAO,PIO|6CO,ABRO

6LN6LR

FE80::IID

NSSLLAO

6LN6LR

FE80::IIDDAR

DAR: Duplicate Address Request

6LN6LR

FE80::IIDDAC

DAC: Duplicate Address Confirmation

6LN6LR

FE80::IID

RAARO+Status

6LN6LR

FE80::IID

↵::IID

�6LBR

6LN6LR

FE80::IID

↵::IID

�::IID

�6LBR

6LN6LR

FE80::IID

↵::IID

�::IID

RPL DIS

RPL: Routing Protocol for Low power and lossy networks, DIS: DODAG (Destination Oriented DirectedAcyclic Graph) Information Solicitation

�6LBR

6LN6LR

FE80::IID

↵::IID

�::IID ↵::IID! dest

�6LBR

6LN6LR

FE80::IID

↵::IID

�::IID ↵::IID! dest

Assigning prefix is quite complex ) Still Multi-homing problem

�6LBR

6LN6LR

FE80::IID

::IID/64

�6LBR

6LN6LR

FE80::IID

::IID/64

RPL DIS

RPL: Routing Protocol for Low power and lossy networks, DIS: DODAG (Destination Oriented DirectedAcyclic Graph) Information Solicitation

�6LBR

6LN6LR

FE80::IID

::IID/64

�6LBR

6LN6LR

FE80::IID

::IID/64

::IID! dest

Implicit well-known source context for 6LoWPAN compression

�6LBR

6LN6LR

FE80::IID

::IID/64

::IID! dest

NPTv6: ::IID ) ↵::IID (L4 checksum adjusted)

↵::IID! dest

�6LBR

6LN6LR

FE80::IID

::IID/64

::IID! dest

↵::IID! dest

�::IID! dest

�6LBR

6LN6LR

FE80::IID

::IID/64

::IID! dest

↵::IID! dest

�::IID! dest

IID can be used to identify senderIID can be used to identify sender

Network Working Group Mike O’Dell

Internet-Draft UUNET Technologies

1997/02/24 01:32:32GMT

GSE - An Alternate Addressing Architecture for IPv6

<draft-ietf-ipngwg-gseaddr-00.txt>

The 16 byte IPv6 address is split into 3 pieces:

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

| Routing Goop | STP| End System Designator |

+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

6+ bytes 2 bytes 8 bytes

Routing Goop signifies where the Site attaches to the Global Internet. The Site

Topology Partition (STP) is Site-private "LAN segment" information. The End System

Designator (ESD) specifies an interface on an end-system.

Rewriting IPv6 addresses by Site Border Routers is by far the most controversial,

but also most critical part of this proposal. To control the complexity

of routing information which must be managed within a Site and to

isolate end systems and interior routers from external topology

changes, the RG of some addresses is modified by Site Border Routers.

Packets exiting a site have the RG for the Site egress point inserted into source addresses,

while packets entering a Site have the RG in all destination addresses replaced with a

canonical prefix signifying "within this Site" (the "Site-local prefix").

1997/02/24 01:32:32GMT

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

In 1997: cannot guaranty unique ESD (IID) for global Internet

1997/02/24 01:32:32GMT

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

In 1997: cannot guaranty unique ESD (IID) for global Internet

Possible with LoWPAN Network: IID is unique in this area

IPIPIPIP

IPIPIP

IPIP IP

IPIPIP

Ethernet IPv6

Destination Address

Source Address

Protocol

Ethernet IPv6

Destination Address

Source Address

Protocol

6 Di↵Serv

Payload Length Next header Hop Limit

Source Address

Destination Address

Flow Label

Ethernet IPv6

Destination Address

Source Address

Protocol

6 Di↵Serv

Source Address

Destination Address

Flow Label

Minimum InformationMinimum Information

Ethernet IPv6

Destination Address

Source Address

Protocol

6 Di↵Serv

Source Address

Destination Address

Flow Label

May Evolve though other stan-

dards:

- IEEE 802.11, IEEE 802.16, ...

- MACinMAC

Ethernet IPv6

Destination Address

Source Address

Protocol

6 Di↵Serv

Source Address

Destination Address

Flow Label

May Evolve though other stan-

dards:

- IEEE 802.11, IEEE 802.16, ...

- MACinMAC

Fixed header, no evolution.

- Extensions are designed for this !

)Wrong design ?

- Internet is nomore homogeneous

0..................7...................15...................23....................31

6 Di↵Serv

Payload Length Next header

Layer 4 or extensions

Hop Limit

Source Address

Destination Address

Flow Label

0..................7...................15...................23....................31

6 Di↵Serv

Hop Limit

Source Address

Destination Address

Flow Label

011 TF NH HLIM CID SAC SAM M DAC DAM

Remaining header data

0..................7...................15...................23....................31

6 Di↵Serv

Hop Limit

Source Address

Destination Address

Flow Label

Mesh Header Fragmentation Header

6LoWPAN: Route OverBreaking the Hourglass

7IPv6 6LP

7IPv6 6LP 1 ! 7

6LP6LP

7IPv6 6LP 1 ! 7

6LP6LP

7IPv6 6LP 1 ! 7

6LP6LP

6LPIPv6

7IPv6 6LP 1 ! 7

6LP6LP

6LPIPv6

Route Over:- ad-hoc network (addresses not prefixes)- May avoid boradcast- Routing protocol (IETF scope) ) RPL

RIPv6 6LoWPAN

Extensions

RIPv6 6LoWPAN

Extensions

RFC 2460: With one exception, extension headers are

not examined or processed by any node along a packet’s delivery path , until

the packet reaches the node (or each of the set of nodes, in the case of multicast)

identified in the Destination Address field of the IPv6 header.

Upward tra�c: DoDAGBreaking the Hourglass

31 32 33

41 42 43 44

51 52 53 54 55

PreferredParent

Upward tra�c: DoDAGBreaking the Hourglass

31 32 33

41 42 43 44

51 52 53 54 55

PreferredParent

forwarding planHopbyHop

RIPv6 6LoWPAN

RIPv6 6LoWPANTunnel: IPv6+ext + orig IPv6

0..................7...................15...................23....................31

6 Di↵Serv

Hop Limit

Source Address

Destination Address

Flow Label

0..................7...................15...................23....................31

6 Di↵Serv

Hop Limit

Source Address

Destination Address

Flow Label

Local Extensions

Mesh Header Fragmentation Header

DNS: CoAP ModeBreaking the Hourglass

�6LBR

6LN6LR

(1) register(2) DNS DU

(3) HTTP GETHost: sensor1

(4) resolvename.example.com

(5) AAAA

(6) CoAP GET

ArduinoBreaking the Hourglass

seehttps://github.com/telecombretagne/Arduino-IPv6Stack

WSN1 WSN2

WSN3 WSN4

Internet

WSN1 WSN2

WSN3 WSN4

Internet

Deterministic Communications ?

WSN1 WSN2

WSN3 WSN4

Internet

Deterministic Communications ?

Isolate some tra�cs

JCSA2013 04 Laurent Toutain - La frange polymorphe de l'Internet

Technology

Transcript of JCSA2013 04 Laurent Toutain - La frange polymorphe de l'Internet

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