1 terena networking conference 2000, lisboa 22-25 may qos in ip over atm networks terena networking...

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Terena Networking Conference 2000, Lisboa 22-25 MayTerena Networking Conference 2000, Lisboa 22-25 May

QoS in IP over ATM NetworksQoS in IP over ATM Networks

Terena Networking Conference 2000Terena Networking Conference 2000

Lisboa, 22-25 MayLisboa, 22-25 May

The BTI field trialsThe BTI field trials

22


ACTS BTI - Broadband Trial Integration(May 98 – December 99)

Objective: to setup and evaluate a concept for implementing Integrated Services in an ATM PON-based access network

Participants: DSC/Tellabs (Denmark) Ericsson/Telebit (Denmark) UNI-C (Denmark) U. Politécnica de Madrid (Spain) University of Edinburgh (Scotland) Univ. Mining and Metalurgy (Poland) TeleDenmark (Denmark) Telekomunikacja Polska (Poland) PT Inovação (Portugal)

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Introduction

QoS in IP over ATM multicast networksRSVP/Integrated Services

ATM

BTI field trialsBTI network architectureEvaluation of field trials

Conclusions

SummarySummary

44


QoS in IP over ATM multicast

networks

55


Resource Reservation Protocol (RSVP)

Orientation Receiver-based

State Soft state

QoS setup time Separate from route establishment

QoS changes Dynamic QoS

Directionality Unidirectional resource allocation

Multicast Receiver heterogeneity

66


RSVP multicast reservation mechanisms

sender

receiver 2

PATH

RESV2

RESV1

receiver 1

77


Asynchronous Transfer Mode (ATM)

RSVP ATM

Orientation Receiver-based Sender-based

State Soft state Hard state

QoS setup time Separate from route establishment

Concurrent with route establishment

QoS changes Dynamic QoS Static QoS

Directionality Unidirectional resource allocation

Bidirectional allocation for unicast

Unidirectional allocation for multicast

Multicast Receiver heterogeneity Uniform QoS

88


multicastserver

ATM multicast

multicastmesh

99


Multicast Address Resolution Server - MARS

atm1

atm2

atm3MARS

Request{mcast IP address}

{mcast IP address, atm1, atm2, atm3}

MARSMulti

MARS server

ClusterControl VC

1010


Mapping service classes: RSVP Guaranteed Service ->-> ATM CBR / rtVBR RSVP Controlled Load Service -> ATM ABR / nrtVBR Best effort -> ATM UBR / ABR

RSVP with ATM multicast

Other issues (e.g. multicast heterogeneity, dynamic QoS)

Relationship RSVP flows/ATM VCs

IS model parameters r – average token bucket rate p – peak data rate b – token bucket depth M – maximum packet size m – minimum policed unit size

Mapping traffic descriptors:

ATM model parameters PCR SCR MBS CDVT

1111


RSVP with ATM multicast

BE BE pt-pt-mptmpt VC VC

PATH

QoS QoS pt-pt-mptmpt VC VC

DATA RESV2

Pt-pt VC with MARS serverPt-pt VC with MARS server

Pt-mpt ClusterControl VCPt-mpt ClusterControl VCBE BE pt-pt-ptpt VC VC

RESV1Register ATM(A)

MARS SERVER

ClusterControl VC

A

B1

B2

MARS_Join(B)

1212


BTI Field Trials

1313


BTI field trial sitesBTI field trial sites

Aarhus, Denmark

Krakow, Poland

Aveiro, Portugal

1414


OLTATM25

VDSL

ATM25

NT

ATM25

VDSL

ATM PON architectureATM PON architecture

OLMOLM

ADMADMSDHSDH

Up to 16 Optical Network Units (ONUs) Customer interface - 25 Mbit/s ATM Customers connected directly to ONU or through VDSL modem PVC connection only

ONU

ONU

ONU

NT

NT

1515


Main BTI enhancements

Implementation of ATM signalling control in the ATM PON

Implementation of IPv6 in routers, application clients and servers

Integration of RSVP, IPv6 and ATM multicast following the Integrated Services model

Implementation of MARS server and client components

Development of a Winsock2 compatible protocol stack running on Windows NT supporting IPv6, RSVP and ATM

Adaptation of IPv4-based user applications to IPv6 with QoS control through RSVP

1616


ADMADMOLT ATM25VDSL

ATM25

ATM25

VDSL

BTI architectureBTI architecture

Server

Remote sites/Internet

OLMOLM

ASWASWONU

ONU

ONU

NT

NT

IPv6 Router(inc. MARS server)

RSVP

Ethernet

IPv6

QoS Appl.

ATM25ATM

VDSL

IPv6

RSVPQ.SAALAAL5

UNI4.0

SDHATM ATM

SDH PON

AAL5Q.SAALUNI4.0

ATMPON VDSL

ATMAAL5

ATM25

QoS Appl.

UNI4.0IPv6

RSVP

Ethernet

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2 Mbit/s ATM link

TelebitTBC2000

router

BTI Field Trial – Global OverviewBTI Field Trial – Global Overview

PT ATM PVC+

DANTE MBS+

NordunetDenmark

trial network

Portugal

trial network

Poland

trial network

TelebitTBC2000

router

TelebitTBC2000

router

1818


Portugal-Denmark IPv6 interconnectionPortugal-Denmark IPv6 interconnection

IPv4-basedNordunet

ATM PVC

Dante MBS (TEN-155)

ATM PVC

PortugalTelecom

ATM backbone

Portugaltrial network

Denmarktrial network

IPv6-over-IPv4 tunneling

IPv6

ATM IPv4

1919


ASWONU

ONU Router

ONUASW

Router

Field Trial Site A

Field Trial Site B

IPv6/ATM

User evaluation - basic scenarioUser evaluation - basic scenario

2020


BTI field trials: overall evaluation

BTI networking features were successfully implemented (e.g. IPv6, RSVP, ATM signalling, multicast);

IPv6 interconnection of field trials was achieved; IPv6-IPv4 cooperation via tunneling was demonstrated as an effective tool for interconnection of IPv6 islands;

Real users collaborated using QoS-enabled applications over IPv6 in the field trials; usability testing was carried out;

BTI Integrated Services over ATM PON network concept was demonstrated and validated by the field trials;

Complexity of RSVP/ATM integration may be a problem against widespread deployment of the solution.

2121


Scalability evaluation of the BTI network concept

Interworking with diffserv-based backbone networks

BTI domain 3

Diffserv Diffserv domaindomain

Topics for further study

BTI domain 1

BTIdomain 2

2222


ReferencesReferences

RFC 1821 – “Integration of Real-time Services in an IP-ATM RFC 1821 – “Integration of Real-time Services in an IP-ATM

Network Architecture”Network Architecture”

RFC 2022 – “Support for Multicast over UNI 3.0/3.1 based ATM RFC 2022 – “Support for Multicast over UNI 3.0/3.1 based ATM

Networks”Networks”

RFC 2380 – “RSVP over ATM Implementation Requirements”RFC 2380 – “RSVP over ATM Implementation Requirements”

RFC 2381 – “Interoperation of Controlled-Load Service and RFC 2381 – “Interoperation of Controlled-Load Service and

Guaranteed Service with ATM”Guaranteed Service with ATM”

RFC 2382 – “A Framework for Integrated Services and RSVP RFC 2382 – “A Framework for Integrated Services and RSVP

over ATM”over ATM”

1 terena networking conference 2000, lisboa 22-25 may qos in ip over atm networks terena networking...

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