AIMS Workshop

Heidelberg, 9-11 March 1998

IP-ATM convergence and integration:

the ACTS PeterPan Project

IP-ATM convergence and integration:

the ACTS PeterPan Project

Giancarlo RigolioItaltel

PeterPan Project coordinator

AIMS Workshop

Heidelberg, 9-11 March 1998

PETERPANPETERPAN:: Provision of an Provision of an Enhanced Transport by Exploiting Enhanced Transport by Exploiting

Reservation in IP and ATM NetworksReservation in IP and ATM Networks

The Project relates to 3rd call task AC321

““Convergence and integration: Internet-ATM”Convergence and integration: Internet-ATM”

and aims to

define,define, specify,specify, implement, and implement, and demonstratedemonstrate

an hybrid IP-ATM architecture for QoS support

AIMS Workshop

Heidelberg, 9-11 March 1998

Three main ideasThree main ideas

• Internet and Multimedia Quality of Service

• IP and ATM integration maximise flexibility, avoid duplications of functionalities

exploit what ATM offers

• The PeterPan Approach in access and core network

AIMS Workshop

Heidelberg, 9-11 March 1998

MultimediaMultimedia

and then ...• MultimediaMultimedia:: real time ==> QoS, speed, ...

• ATM:ATM: speed, flexibility, QoS associated with “traffic classes” (CBR, VBR, ..)

• Internet/IP:Internet/IP: bottlenecks, best effort, standards “de facto”, intense interoperability, contents, users’ acceptance, ...

ATMATM InternetInternet

Other… and,

Internet is growing- as traffic volume- with QoS-aware applications

AIMS Workshop

Heidelberg, 9-11 March 1998

Internet and Multimedia: the novelty of Internet and Multimedia: the novelty of QoSQoS

Internet and Multimedia: the novelty of Internet and Multimedia: the novelty of QoSQoSAn example:An example:

• Have you ever attempted, surfing the WEB, to watch a real time videoreal time video?

• how long have you been watching it before to abandon?

• if you do not abandoned, it was probably because you were already sleepingsleeping, still waiting for it to progress (unless an image jumpjump shakes you!)

AIMS Workshop

Heidelberg, 9-11 March 1998

realreal time qualitytime quality:

acceptable resolution, image continuityrequires bandwidth, bounded delay, …

NO QoS guaranteesNO QoS guarantees:uncertain bandwidth, no bounded delay, …

poor resolution, jumps (lost images), slow motion,

..

AIMS Workshop

Heidelberg, 9-11 March 1998

News in Internet (IETF)News in Internet (IETF)News in Internet (IETF)News in Internet (IETF)

New internet service modelNew internet service model

packet based

Best EffortIInternet IIntegrated SServices

(Internet Differentiated Services)

Stateless flow based, soft state

FIFO routersMultiple queues, services based packet scheduling

AIMS Workshop

Heidelberg, 9-11 March 1998

Internet-ATM: is the integration possible?Internet-ATM: is the integration possible?Internet-ATM: is the integration possible?Internet-ATM: is the integration possible?

(soft) state

packet based connectionless + flow

cell based connection oriented

packet scheduling

IIS traffic classes

(hard) state

per connection QoS guarantees

admission control CAC + Policing

New InternetNew Internet ATMATM

resource reservation connection acceptance

AIMS Workshop

Heidelberg, 9-11 March 1998

EvolutionEvolutionEvolutionEvolution

Migration (if any) from IP-based to ATM-native solutions will not be generalised, thus mixed IP and ATM scenarios will last for long, and is difficult to speculate how figures will evolve

ATM and IP will coexist in next futureATM and IP will coexist in next future

Full use of ATM (including signalling) allows efficient support for both, irrespectively their market share and uncertainty of evolution trend

AIMS Workshop

Heidelberg, 9-11 March 1998

State of the artState of the artState of the artState of the artStandardisationStandardisation

IETF: Classical IP-over-ATM, NHRP MPLSIIS (ISATM), Differentiated ServicesRSVPION, QoS Routing

ATMF: LANE / MPOAPNNI-PAR

Proprietary solutions:Proprietary solutions:

Within routers: Level 2 switching (cut-through)Between routers: IP switching (Ipsilon), CSR (Toshiba),

Tag Switching (CISCO) , ARIS (IBM) …

AIMS Workshop

Heidelberg, 9-11 March 1998

IP packetsIP packets

“on the fly” IP processing (IP switching)

mapping to ATM VCCs(trunking / dedicated connections)- use of B-ISDN signalling- traffic scheduling / VC shortcut- routing / QoS-routing

IP flowsIP flowsidentification via RSVP, traffic monitoring, subscription, …

PeterPan:PeterPan: merging “the best” of IP and ATM merging “the best” of IP and ATMPeterPan:PeterPan: merging “the best” of IP and ATM merging “the best” of IP and ATMavoiding duplications (and contending dynamics)

AIMS Workshop

Heidelberg, 9-11 March 1998

PeterPanfocus

IPAAL/ATM

App.

IPnonATM

App.

IPIPAAL/ATM

AAL/ATM

App.

App.

Edge router

IPAAL/ATM

Integrated Integrated IP-ATMIP-ATM switchswitch

ATM ATM switchswitch

IP IP routerrouter

ATMI/F

ATMI/F

AIMS WorkshopHeidelberg, 9-11 March 1998

IP processing in the core network?IP processing in the core network?IP processing in the core network?IP processing in the core network?R

R

R

R

ATM• switching• dedicated VC for QoS• trunking• merging

AIMS Workshop

Heidelberg, 9-11 March 1998

PeterPan ConsortiumPeterPan ConsortiumPeterPan ConsortiumPeterPan Consortium

• ItaltelItaltel (Italy)

• HP (UK)• Telecom Italia (Italy)• Cselt (Italy) • Inesc (Portugal)• Lancaster University (UK)• NTUA (Greece)• UCLA (USA)• Università di Pisa (Italy)

AIMS Workshop

Heidelberg, 9-11 March 1998

WP0Project Management

WP11Arch. Spec

WP12Traffic Studies

WP21Control Plane impl.

WP23Applications upgr.

WP22Traffic Hand. impl.

WP31Initial Platform int.

WP33Trial

WP32Final Platform int.

PeterPan work break-downPeterPan work break-downPeterPan work break-downPeterPan work break-down

AIMS Workshop

Heidelberg, 9-11 March 1998

LosLos AngelesAngeles LisbonLisbon

LancasterLancaster

PisaPisaMilanMilan

Gigakit networkGigakit network

IP & ATM users groupsPON users groupATM core and edge sw.

IP-over-ATM and RSVP mapping to ATM TC

Interactive MM Retrieval, Videotelephony

IP & ATM LAN Telemedicine Traffic measures

Local ATM environment

IP-over-ATM and RSVPIP scheduling

Flexible-programmable ATM nodes Connection to NSF Gigakit net.

IP-over-ATM and RSVP, QoS routing Virtual world, telemedicine, multimedia

Local ATM environment

IPv4 .vs. IPv6Multimedia serv. with QoS

PeterPan ProjectPeterPan Projecttrial sitestrial sites

PeterPan ProjectPeterPan Projecttrial sitestrial sites

AIMS Workshop

Heidelberg, 9-11 March 1998

LosLos AngelesAngeles LisbonLisbon

LancasterLancaster

PisaPisaMilanMilan

Gigakit networkGigakit network

and ...and ... PeterPan’sPeterPan’sNever islandNever island

and ...and ... PeterPan’sPeterPan’sNever islandNever island