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AIMS Workshop

Heidelberg, 9-11 March 1998

IP Multicast Services over ATM for Broadband Collaborative Engineering — Experience from the MULTICUBE Project

Rudolf Roth, Michael Smirnov, Henning Sanneck, Dorota Witaszek

GMD FOKUSLuca Salgarelli, A. Corghi; CEFRIEL

ACTS Multicube

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AIMS Workshop

Heidelberg, 9-11 March 1998

ACTS Project AC012 Multicube

efficient multipoint to multipoint broadband switched network services for distributed Multimedia applications

industrial partners from automotive and aerospace industry experiments with transeuropean ATM connectivity for collaborative

engineering experiment scenarios for

Collaborative Engineering, Teletesting, Distributed Simulations development

ATM multicast server node UNI and NNI signalling for meshed pt-to-mpt connections study of Enhanced IP over ATM

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AIMS Workshop

Heidelberg, 9-11 March 1998

Contents

Internet Integrated Services over ATM

The MIS Architecture

Main Components

The Quantized Heterogenity Service Model

Prototype Implementation Environment

Conclusions

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AIMS Workshop

Heidelberg, 9-11 March 1998

Internet integrated Services over ATM

Internet Integrated Services (IIS) Best Effort / Controled Load Service / Guaranteed Services RSVP for IIS signalling IP multicast aware

IIS over ATM mapping IP flows onto point-to-multipoint SVCs cut-through connections across ATM cloud internetworking with other networking technologies

sender / receivers directly attached ATM host oringress / egress routers

Central Issues QoS mapping:

GS / CLS / BE --> CBR, rt-VBR, nrt-VBR, ABR, UBR Traffic management: set up / release of QoS SVCs

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AIMS Workshop

Heidelberg, 9-11 March 1998

Roadmap to IETF Working Groups for IIS

ION (Internetworking over NBMA [non-broadcast multi-access]) Classical IP over ATM, NHRP, MARS

IntServ (Integrated Services) specification of enhanced Internet Service Model

ISSLL (Integrated Services over Specific Link Layers) ISATM subgroup:

framework for IntServ & RSVP over ATM CLS & GS with ATM (QoS param mapping) RSVP over ATM Implementation Requirements

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AIMS Workshop

Heidelberg, 9-11 March 1998

Support for IP Multicast + Integrated Services in ATM Networks

needed for IP multicast handling:

group membership QoS aware Multicast Address Resolution Service:

QoS level tracking and management

RSVP handling RSVP processed by each hops in PATH but ATM cloud represents single collapsed hop transport of RSVP packets processing of RSVP reservations

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AIMS Workshop

Heidelberg, 9-11 March 1998

ACTS Project Multicube

Multicube Enhanced IP over ATM == IP multicast and QoS in ATM networks

MIS architecture: comprehensive Support Solution for IntServ in ATM networks(submitted as internet-draft to issll)

Quantized heterogenity model:efficient support for QoS in ATM cloudsallowing heterogeneous QoS levels per group

prototype implementation and proof of concepts in demonstration environment

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AIMS Workshop

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MIS Architecture

server based solution MIS multicast integrated server for MLIS

design principles: no modification of protocols (RSVP, address resolution, ..) clear conceptual separation of L2/L3 issues cooperation of address resolution and reservation set-up independence of QoS service model

components: EARTH-S

QoS-aware MARP Server based on EARTH protocol RSVP-Server Interworking functions

layer 3 / layer 2 QoS management remote CAC concept

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AIMS Workshop

Heidelberg, 9-11 March 1998

EARTH-S

RFC 2022 MARS: multicast ATM ARP service

EARTH protocol: extension of MARS functionality MLIS concept

multicast VC cut-thru connections across LIS's Support for

Source-specific subgroups (SSG, registration by IGMPv3) QoS-specific subgroups (QSG, registration by RSVP)

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AIMS Workshop

Heidelberg, 9-11 March 1998

RSVP-S

RSVP (control) messages transported on distinct path from data messages

processing of PATH msg's replication, modification, distribution

processing of RESV msg's merging and forwarding

resource reservation policy enforcement policing filtering capacity admission control

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AIMS Workshop

Heidelberg, 9-11 March 1998

MIS operation overview

sender MIS receiverPATH

EARTH_query

translateQoSRESV

PATH(ADSPEC)

EARTH_multi

EARTH_qos_notify

remoteCAC

CACresultRESV

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AIMS Workshop

Heidelberg, 9-11 March 1998

Quantized Heterogenity Service Model

extreme cases full: potientially separate VCs for all receivers limited: BE + single QoS VC only

Quantized model: small set of QoS levels allowed ADSPEC adds constraints to PATH msgs

LIS ALIS B

S

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AIMS Workshop

Heidelberg, 9-11 March 1998

Prototype Implementation Environment

MIS implementation currently under development(preversion for RSVP unicast / BE multicast exist)

Sun Solaris 2.5, FORE ATM SBA200E, ForeThough 4.1 +host driver extensions for point-to-multipoint connections

MINT (multimedia internet terminal)conferencing toolset

adaptive audio / video communication RSVP control interface session invitation, floor control

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AIMS Workshop

Heidelberg, 9-11 March 1998

Summary

Framework for Integrated Services and RSVP over ATMunder development by IETF ISSLL working group

MIS Architecturea solution developed by the ACTS Project Multicubesubmitted issll internet-draft

Server-based approach integrating resource reservation and multicasting

integrated prototype to be ready by Apr. 98

extensive experiments in final phase of Multicube

Visitors to our next Multicube Workshop are welcome !!

contact: Jacopo.Corridoni@CSELT.IT