IP Networking projects in the IP Networking projects in the - - PowerPoint PPT Presentation

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IP Networking projects in the IP Networking projects in the - - PowerPoint PPT Presentation

Feb 03, 2024 158 likes •390 views

IP Networking projects in the IP Networking projects in the European Space Agency European Space Agency Frank.Zeppenfeldt Zeppenfeldt@ @esa esa. .int int Frank. Frank.Zeppenfeldt@esa.int 1 1 ESA Member States and Establishments ESA

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IP Networking projects in the IP Networking projects in the European Space Agency European Space Agency

Frank.Zeppenfeldt@esa.int Frank. Frank.Zeppenfeldt Zeppenfeldt@ @esa esa. .int int

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  • ESA Member States and Establishments

ESA Member States and Establishments ESA Member States and Establishments

ESTEC ESTEC ( (Noordwijk Noordwijk) ) Kiruna Kiruna Redu Redu EAC EAC (Cologne) (Cologne) ESOC ESOC (Darmstadt) (Darmstadt) ESRIN ESRIN (Frascati) (Frascati) Fucino Fucino Perth Perth Moscow Malindi Maspalomas Maspalomas Kourou Kourou CDN Washington Houston Houston Brussels Brussels ESA HQ ESA HQ (Paris) (Paris) Toulouse Toulouse Villafranca Villafranca Ariane Ariane Downrange Stations Downrange Stations Ground Stations used by ESA Ground Stations used by ESA ESA Ground Stations ESA Ground Stations Offices Offices Establishments Establishments Natal Natal Libreville Ascension Ascension

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  • ESA Telecommunications funds via different programs:

ESA Telecommunications funds via different programs:

  • Research into satellite communications system

Research into satellite communications system

  • Prototyping and development of elements of

Prototyping and development of elements of satcom satcom systems (user systems (user terminals, network, space segment) terminals, network, space segment)

  • Roll

Roll-

  • out of new services using satellite communications, e.g.:
  • ut of new services using satellite communications, e.g.:
  • Interactive television

Interactive television

  • Content delivery networks

Content delivery networks

  • MHP

MHP

  • MediaSpace

MediaSpace

  • Telemedicine in

Telemedicine in Bagdad Bagdad

  • …

…

ESA Telecom ESA Telecom ESA Telecom

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Summary of on Summary of on-

  • going and future network related ESA

going and future network related ESA projects addressing: projects addressing:

  • Satellite architectures and their impact on networking

Satellite architectures and their impact on networking

  • Link

Link-

  • layer issues and IPv6

layer issues and IPv6

  • Multicast and service announcements

Multicast and service announcements

  • QoS

QoS

  • PEPs

PEPs

  • Security

Security All in their satellite specific context… All in their satellite specific context…

Presentation overview Presentation overview Presentation overview

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New satellite architectures New satellite architectures New satellite architectures

  • More & more satellite networks allow for bi

More & more satellite networks allow for bi-

  • directional

directional communications via satellite (DVB communications via satellite (DVB-

  • S/DVB

S/DVB-

  • RCS)

RCS)

  • Newer satellite architectures propose a “bridge” or “MPE router”

Newer satellite architectures propose a “bridge” or “MPE router”

  • n
  • n-
  • board

board

  • Research for on

Research for on-

  • board switching satellites stimulated by ESA

board switching satellites stimulated by ESA since long since long

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Routing on board: AMERHIS Routing on board: AMERHIS Routing on board: AMERHIS

Co Co-

  • funded project will demonstrate this technology on a

funded project will demonstrate this technology on a commercial satellite as a piggy commercial satellite as a piggy-

  • back payload

back payload DVB-RCS

Transparent

DVB-S

Transparent

AMERHIS

Regenerative Cross-Connected Multi-Spot

DVB-RCS DVB-S DVB-S DVB-S DVB-S

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Routing on board: AMERHIS Routing on board: AMERHIS Routing on board: AMERHIS

Network of AMERHIS Network of AMERHIS

  • Many user terminals

Many user terminals

  • Injection of user multicast for micro

Injection of user multicast for micro-

  • broadcasters

broadcasters

  • Services: ISP & VPN access, LAN2LAN, Multicast,

Services: ISP & VPN access, LAN2LAN, Multicast, QoS QoS. .

  • Fully compatible with DVB

Fully compatible with DVB-

  • S and DVB

S and DVB-

  • RCS

RCS Gateway Gateway stations stations

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Multicast Multicast Multicast

Multicast is inherent to satellite communications: Multicast is inherent to satellite communications:

  • Currently, multicast = broadcast

Currently, multicast = broadcast

  • New satellites with multiple spot beams do only multicast in are

New satellites with multiple spot beams do only multicast in areas where as where there are members there are members

  • Satellite topology is something in between a broadcast, UDLR, NB

Satellite topology is something in between a broadcast, UDLR, NBMA or MA or P2P P2P

Missing elements for seamless satellite IP multicast are: Missing elements for seamless satellite IP multicast are:

  • Service announcements (SDP/SAP is not enough in large flat netwo

Service announcements (SDP/SAP is not enough in large flat networks, rks, integration with DVB information is required) integration with DVB information is required)

  • Adaptation of IGMP

Adaptation of IGMP proxying proxying timers/rebroadcast of IGMP reports timers/rebroadcast of IGMP reports

  • Special placement of PIM RP to avoid double hops

Special placement of PIM RP to avoid double hops

  • Integration with the satellite on

Integration with the satellite on-

  • board routing capability

board routing capability (like PIM (like PIM-

  • SP Join’s linked to ATM Add

SP Join’s linked to ATM Add-

  • Party)

Party)

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QoS in satellite networks QoS QoS in satellite networks in satellite networks

Problems for practical Problems for practical QoS QoS in satellite networks in satellite networks

  • Missing tools for specifying and provisioning

Missing tools for specifying and provisioning QoS QoS in FW and RT in FW and RT link link

  • No

No MIBs MIBs (or (or PIBs PIBs) available or agreement on COPS/SNMP/other ) available or agreement on COPS/SNMP/other interface for provisioning interface for provisioning

  • No Cookbook for doing e.g. Voice over IP

No Cookbook for doing e.g. Voice over IP

  • No guidelines for mapping Internet

No guidelines for mapping Internet QoS QoS on e.g. DVB

  • n e.g. DVB-
  • RCS

RCS Capacity Allocations Capacity Allocations (

(or DSCP handling, queuing

  • r DSCP handling, queuing –

– policing policing – –shaping shaping recommendations related to channels/RBDC/ recommendations related to channels/RBDC/VPNs VPNs/DAMA functionality /DAMA functionality)

) Two ESA studies: Two ESA studies:

  • QoS

QoS in FW link for a DVB in FW link for a DVB-

  • S Gateway

S Gateway

  • Integrated

Integrated QoS QoS Management for DVB Management for DVB-

  • RCS networks

RCS networks

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QoS in Forward Link QoS QoS in Forward Link in Forward Link

ESA Study performed by VCS Engineering,Salzburg University, Crit ESA Study performed by VCS Engineering,Salzburg University, Critical ical Software: Software:

  • methods to

methods to provision provision QoS QoS based on based on diffserv diffserv in DVB forward in DVB forward links links, including , including IPSec IPSec, multiple IP/DVB gateways , multiple IP/DVB gateways

  • dynamic SLA trading

dynamic SLA trading between ISPs and a Space Link Provider between ISPs and a Space Link Provider

  • Architecture based on scaled

Architecture based on scaled-

  • down

down IOTP IOTP for trading and for trading and COPS COPS-

  • PR

PR/ /DiffServ DiffServ for provisioning for provisioning

  • Simulation with modified ns

Simulation with modified ns-

  • 2 validated the concept

2 validated the concept

  • Iteration with two Space Link Providers on requirements

Iteration with two Space Link Providers on requirements Results: Results:

  • development

development completed and tested end 2002 completed and tested end 2002

  • implementation with Linux

implementation with Linux DiffServ DiffServ in a commercial IP/DVB in a commercial IP/DVB gateway gateway

  • Policy Information Base for Gateway

Policy Information Base for Gateway

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QoS in Forward Link QoS QoS in Forward Link in Forward Link

Service Link Provider Service Link Provider SLA trader SLA trader ISP 2 ISP 2 IP/DVB IP/DVB uplink uplink COPS COPS SLA trader SLA trader ISP 1 ISP 1 IOTP IOTP IOTP IOTP Terrestrial return Terrestrial return DiffServ DiffServ Domain Domain SLA trader SLA trader Users Users

You have 2 Mbps Gold (EF) for me ? You have 2 Mbps Gold (EF) for me ? Yes, at 300€/hour Yes, at 300€/hour

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QoS and DVB-RCS QoS QoS and DVB and DVB-

  • RCS

RCS

For the return link (from user-to-hub, or user-to-user ) similar problems as in FW link exists, plus:

  • no guidelines for MAC layer access procedures or Resource

Management

  • “missing IEEE 802.1p”
  • Looks like the IP QoS on ATM CoS problem

Current study on “Integrated resources and QoS management for DVB-RCS Networks”

  • Will use typical scenarios such as VoIP, ERP applications
  • investigating needs for standardisation and further prototyping
  • study integration of terrestrial practices for provisioning QoS with

satellite domain For the return link (from user-to-hub, or user-to-user ) similar problems as in FW link exists, plus:

  • no guidelines for MAC layer access procedures or Resource

Management

  • “missing IEEE 802.1p”
  • Looks like the IP QoS on ATM CoS problem

Current study on “Integrated resources and QoS management for DVB-RCS Networks”

  • Will use typical scenarios such as VoIP, ERP applications
  • investigating needs for standardisation and further prototyping
  • study integration of terrestrial practices for provisioning QoS with

satellite domain

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QoS and DVB-RCS QoS QoS and DVB and DVB-

  • RCS

RCS

MAC MAC IP IP RSVP/ RSVP/DiffServ DiffServ LAN LAN IP IP RSVP/ RSVP/DiffServ DiffServ 10BaseT 10BaseT 10BaseT 10BaseT DVB DVB-

  • S/RCS

S/RCS MPEG/DULM MPEG/DULM Terminal/gateway Terminal/gateway Host/router Host/router

SI SI-

  • M

M-

  • SAP

SAP

?? ??

VoIP VoIP with 16 kbps with 16 kbps DVB DVB-

  • RCS CRA

RCS CRA

I.2 I.2 I.2 I.5 I.5 I.5

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IPv6 IPv6 IPv6

IPv6 is subject of many EC-IST projects and part of several 6FP proposals

  • Not many of them address IPv6 in satellite architectures
  • Invitation to Tender on

“Preparation for IPv6 in Satellite Communications“

  • Should address:
  • impacts on satellite architectures
  • participation to large scale trials
  • provision of a satellite component of a terrestrial IPv6 network
  • cookbook for migration scenarios

IPv6 is subject of many EC-IST projects and part of several 6FP proposals

  • Not many of them address IPv6 in satellite architectures
  • Invitation to Tender on

“Preparation for IPv6 in Satellite Communications“

  • Should address:
  • impacts on satellite architectures
  • participation to large scale trials
  • provision of a satellite component of a terrestrial IPv6 network
  • cookbook for migration scenarios
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IPv6 IPv6 IPv6

IPv6 will impact satellite architectures concerning:

Link and Network layer

  • Missing encapsulations, header compression, uni-directional links
  • Routing experience missing in large flat networks

Network Management

  • lots of “strange” equipment in earth station, no MIBs

Security: IPsec problems for PEP and multicast And on Mobility, Standard bodies,…

IPv6 will impact satellite architectures concerning:

Link and Network layer

  • Missing encapsulations, header compression, uni-directional links
  • Routing experience missing in large flat networks

Network Management

  • lots of “strange” equipment in earth station, no MIBs

Security: IPsec problems for PEP and multicast And on Mobility, Standard bodies,…

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IPv6 and other encapsulations IPv6 and other encapsulations IPv6 and other encapsulations

What is missing more for advanced protocols over satellite ?

  • DVB community did not optimise carrying of IP over DVB-S.
  • MPE method in DVB-S is carrying IPv4 or LLC/SNAP encapsulated data

with lots of overhead

  • Resulted in Invitation to Tender on “Standardisation Support of

Enhanced IETF IP Encapsulation Techniques for DVB-S“

  • Prototype implementation of Internet Draft encapsulation for DVB-S

receiver and encapsulators

  • evolution of MPE and new schemes for encapsulation
  • address resolution and MMT/INT issues
  • Hopefully at IETF in Vienna (July 2003) IP-over-DVB WG

establishment !

What is missing more for advanced protocols over satellite ?

  • DVB community did not optimise carrying of IP over DVB-S.
  • MPE method in DVB-S is carrying IPv4 or LLC/SNAP encapsulated data

with lots of overhead

  • Resulted in Invitation to Tender on “Standardisation Support of

Enhanced IETF IP Encapsulation Techniques for DVB-S“

  • Prototype implementation of Internet Draft encapsulation for DVB-S

receiver and encapsulators

  • evolution of MPE and new schemes for encapsulation
  • address resolution and MMT/INT issues
  • Hopefully at IETF in Vienna (July 2003) IP-over-DVB WG

establishment !

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Transport protocols Transport protocols Transport protocols

Protocol Enhancing Proxies Protocol Enhancing Proxies

  • required for current commercial/consumer use of TCP over satelli

required for current commercial/consumer use of TCP over satellite te

  • No standard available, from the space community there is SCPS

No standard available, from the space community there is SCPS ( (www. www.scps scps.org .org) )

  • Rate controlled TCP

Rate controlled TCP

  • All

All tcp tcp-

  • sat recommendations implemented

sat recommendations implemented

ESA co ESA co-

  • funded project (

funded project (Xiphos

Xiphos and CRC) and CRC) tries to:

tries to:

  • Integrate SCPS with DVB

Integrate SCPS with DVB-

  • S/RCS Hub and Terminals

S/RCS Hub and Terminals

  • Use of lower layer information intelligently (as proposed in

Use of lower layer information intelligently (as proposed in IETF

IETF TRIGTRAN WG TRIGTRAN WG)

)

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IP Security IP Security IP Security

Security for satellite communications was addressed in two studies:

  • Trade-off between
  • Ipsec
  • Conditional Access
  • Transport Layer security

Main problems:

  • No multicast security available yet from IETF MSEC WG (all

multicast in GRE tunnels !)

  • Conditional access systems are expensive and hacked
  • No Support for micro-broadcasters

Security for satellite communications was addressed in two studi Security for satellite communications was addressed in two studies: es:

  • Trade

Trade-

  • off between
  • ff between
  • Ipsec

Ipsec

  • Conditional Access

Conditional Access

  • Transport Layer security

Transport Layer security Main problems: Main problems:

  • No multicast security available yet from IETF MSEC WG (all

No multicast security available yet from IETF MSEC WG (all multicast in GRE tunnels !) multicast in GRE tunnels !)

  • Conditional access systems are expensive and hacked

Conditional access systems are expensive and hacked

  • No Support for micro

No Support for micro-

  • broadcasters

broadcasters

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IP Security: multicast IP Security: multicast IP Security: multicast

Resulted in a co-funded project (Logica/Uni Surrey) implementing Secure IP multicast

  • Support of second instance of Group Key Management

implementation within IETF framework

  • Implementation of “light” GSAKMP and LKH as key distribution

method

  • Workshop held to capture further requirements (1 May 2003,

London)

  • Interoperability tests with U.S. implementation
  • Hopefully, more trials using this software over satellite
  • Possibly, Internet Draft on experiences to MSEC WG

Resulted in a co Resulted in a co-

  • funded project (

funded project (Logica Logica/ /Uni Uni Surrey) implementing Surrey) implementing Secure IP multicast Secure IP multicast

  • Support of second instance of Group Key Management

Support of second instance of Group Key Management implementation within IETF framework implementation within IETF framework

  • Implementation of “light” GSAKMP and LKH as key distribution

Implementation of “light” GSAKMP and LKH as key distribution method method

  • Workshop held to capture further requirements (1 May 2003,

Workshop held to capture further requirements (1 May 2003, London) London)

  • Interoperability tests with U.S. implementation

Interoperability tests with U.S. implementation

  • Hopefully

Hopefully, more trials using this software over satellite , more trials using this software over satellite

  • Possibly, Internet Draft on experiences to MSEC WG

Possibly, Internet Draft on experiences to MSEC WG

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Mobility Mobility Mobility

Co-funded study (Udcast) on enhanced mobility for UDLR Co Co-

  • funded study (

funded study (Udcast Udcast) on enhanced mobility for UDLR ) on enhanced mobility for UDLR Feeder 1 Europe Feeder 1 Feeder 1 Europe Europe Feeder 2 Asia Feeder 2 Feeder 2 Asia Asia

WLAN (in port) WLAN (in port) WLAN (in port) Globalstar Globalstar Globalstar DVB-RCS DVB DVB-

  • RCS

RCS

User requirements did not allow for mobile IP:

Need for multicast and fast handovers, no triangle routing

User requirements did not User requirements did not allow for mobile IP: allow for mobile IP:

Need for multicast and fast Need for multicast and fast handovers, no triangle routing handovers, no triangle routing

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IP Workshop IP Workshop IP Workshop

IP Networking over Satellite Workshop held 13/14 May 2003 at ESTEC:

  • 70 persons attended from industry, universities and research

laboratories

  • All presentation multi-casted over satellite with participation of

remote users (using DistLearn tool) IP Networking over Satellite Workshop held 13/14 May 2003 at IP Networking over Satellite Workshop held 13/14 May 2003 at ESTEC: ESTEC:

  • 70 persons attended from industry, universities and research

70 persons attended from industry, universities and research laboratories laboratories

  • All presentation multi

All presentation multi-

  • casted

casted over satellite with participation of

  • ver satellite with participation of

remote users (using remote users (using DistLearn DistLearn tool) tool)

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Future Future Future

Future projects

  • More focus on integration of terrestrial/satellite networking
  • Will look slowly into IP routing/MPLS onboard and enhanced

mobility

  • QoS for applications
  • MIKEY/SRTP integration in security testbed
  • L2 VPN (PPPoE/L2TP) scenario’s

Upcoming tenders “Integrated Applications and User Terminals”

  • Open since yesterday, look at http://emits.esa.int/
  • 150k€ - 3M€ , 50% funded

Future projects Future projects

  • More focus on integration of terrestrial/satellite networking

More focus on integration of terrestrial/satellite networking

  • Will look slowly into IP routing/MPLS onboard and enhanced

Will look slowly into IP routing/MPLS onboard and enhanced mobility mobility

  • QoS

QoS for applications for applications

  • MIKEY/SRTP integration in security

MIKEY/SRTP integration in security testbed testbed

  • L2 VPN (

L2 VPN (PPPoE PPPoE/L2TP) scenario’s /L2TP) scenario’s

Upcoming tenders “Integrated Applications and User Upcoming tenders “Integrated Applications and User Terminals” Terminals”

  • Open since yesterday, look at

Open since yesterday, look at http://emits.

http://emits.esa esa. .int int/ /

  • 150k€

150k€ -

  • 3M€ , 50% funded

3M€ , 50% funded

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http://telecom.esa.int http://telecom.esa.int http://telecom.esa.int