1. Folie 1 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 FOKUS Luca Salgarelli, A. Corghi; CEFRIEL ACTS Multicube

2. Folie 2 AIMS Workshop Heidelberg, 9-11 March 1998 ACTS Project AC012 Multicube efficient multipoint to multipoint broadband switched network services for distributed Multimedia applications n industrial partners from automotive and aerospace industry n experiments with transeuropean ATM connectivity for collaborative engineering n experiment scenarios for Collaborative Engineering, Teletesting, Distributed Simulations n development n ATM multicast server node n UNI and NNI signalling for meshed pt-to-mpt connections n study of Enhanced IP over ATM

3. Folie 3 AIMS Workshop Heidelberg, 9-11 March 1998 Contents n Internet Integrated Services over ATM n The MIS Architecture l Main Components l The Quantized Heterogenity Service Model l Prototype Implementation Environment n Conclusions

4. Folie 4 AIMS Workshop Heidelberg, 9-11 March 1998 Internet integrated Services over ATM Internet Integrated Services (IIS) n Best Effort / Controled Load Service / Guaranteed Services n RSVP for IIS signalling n IP multicast aware IIS over ATM n mapping IP flows onto point-to-multipoint SVCs n cut-through connections across ATM cloud n internetworking with other networking technologies sender / receivers directly attached ATM host or ingress / egress routers Central Issues n QoS mapping: GS / CLS / BE --> CBR, rt-VBR, nrt-VBR, ABR, UBR n Traffic management: set up / release of QoS SVCs

5. Folie 5 AIMS Workshop Heidelberg, 9-11 March 1998 Roadmap to IETF Working Groups for IIS n ION (Internetworking over NBMA [non-broadcast multi-access]) l Classical IP over ATM, NHRP, MARS n IntServ (Integrated Services) l specification of enhanced Internet Service Model n ISSLL (Integrated Services over Specific Link Layers) l ISATM subgroup: l framework for IntServ & RSVP over ATM l CLS & GS with ATM (QoS param mapping) l RSVP over ATM Implementation Requirements

6. Folie 6 AIMS Workshop Heidelberg, 9-11 March 1998 Support for IP Multicast + Integrated Services in ATM Networks needed for n IP multicast handling: l group membership l QoS aware Multicast Address Resolution Service: QoS level tracking and management n RSVP handling l RSVP processed by each hops in PATH l but ATM cloud represents single collapsed hop l transport of RSVP packets l processing of RSVP reservations

7. Folie 7 AIMS Workshop Heidelberg, 9-11 March 1998 ACTS Project Multicube n Multicube Enhanced IP over ATM == IP multicast and QoS in ATM networks l MIS architecture: comprehensive Support Solution for IntServ in ATM networks (submitted as internet-draft to issll) l Quantized heterogenity model: efficient support for QoS in ATM clouds allowing heterogeneous QoS levels per group l prototype implementation and proof of concepts in demonstration environment

8. Folie 8 AIMS Workshop Heidelberg, 9-11 March 1998 MIS Architecture n server based solution l MIS multicast integrated server for MLIS n design principles: l no modification of protocols (RSVP, address resolution,..) l clear conceptual separation of L2/L3 issues l cooperation of address resolution and reservation set-up l independence of QoS service model n components: l EARTH-S QoS-aware MARP Server based on EARTH protocol l RSVP-Server l Interworking functions l layer 3 / layer 2 QoS management l remote CAC concept

9. Folie 9 AIMS Workshop Heidelberg, 9-11 March 1998 EARTH-S n RFC 2022 MARS: multicast ATM ARP service n EARTH protocol: extension of MARS functionality l MLIS concept multicast VC cut-thru connections across LIS's l Support for Source-specific subgroups (SSG, registration by IGMPv3) QoS-specific subgroups (QSG, registration by RSVP)

10. Folie 10 AIMS Workshop Heidelberg, 9-11 March 1998 RSVP-S n RSVP (control) messages transported on distinct path from data messages n processing of PATH msg's l replication, modification, distribution n processing of RESV msg's l merging and forwarding n resource reservation policy enforcement l policing l filtering l capacity admission control

11. Folie 11 AIMS Workshop Heidelberg, 9-11 March 1998 MIS operation overview senderMIS receiver PATH EARTH_query translateQoS RESV PATH(ADSPEC) EARTH_multi EARTH_qos_notify remote CAC result RESV

12. Folie 12 AIMS Workshop Heidelberg, 9-11 March 1998 Quantized Heterogenity Service Model n extreme cases l full: potientially separate VCs for all receivers l limited: BE + single QoS VC only n Quantized model: l small set of QoS levels allowed l ADSPEC adds constraints to PATH msgs LIS A LIS B S

13. Folie 13 AIMS Workshop Heidelberg, 9-11 March 1998 Prototype Implementation Environment n MIS implementation currently under development (preversion for RSVP unicast / BE multicast exist) n Sun Solaris 2.5, FORE ATM SBA200E, ForeThough 4.1 + host driver extensions for point-to-multipoint connections n MINT (multimedia internet terminal) conferencing toolset l adaptive audio / video communication l RSVP control interface l session invitation, floor control

14. Folie 14 AIMS Workshop Heidelberg, 9-11 March 1998 Summary n Framework for Integrated Services and RSVP over ATM under development by IETF ISSLL working group n MIS Architecture a solution developed by the ACTS Project Multicube submitted issll internet-draft n Server-based approach integrating resource reservation and multicasting n integrated prototype to be ready by Apr. 98 n extensive experiments in final phase of Multicube n Visitors to our next Multicube Workshop are welcome !! contact: Jacopo.Corridoni@CSELT.IT