KEK-CERN JEG experiment

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KEK-CERN JEG experiment
CHEP2000 conference at Padova on 9 February
2000 Yukio.Karita_at_kek.jp

http//www.kek.jp/karita/chep2000-jeg.ppt
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Co-authorsInstitutes and people who participated
in this experiment are

• KEK Yukio Karita, Soh Suzuki, Fukuko Yuasa,
  Youhei Morita, Takashi Sasaki, Katsuya Amako,
  Teiji Nakamura, Kiyoharu Hashimoto, Hiroyuki
  Sato, Yoshiyuki Watase
• CERN Olivier Martin, Paolo Moroni, Jiri Navratil
• CRL (Communications Research Laboratory) Fumito
  Kubuta, Hideki Otsuki, Hiroaki Harai, Shinichi
  Nakagawa, Akihiko Machizawa
• TAO (Telecommunications Advancement Organization
  of Japan) Hideo Miyahara, Isao Kaneko

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What is JEG?

• JEG (Japan-Europe Global Architecture for
  Multimedia Access) Project
• Joint project of MPT (Ministry of Post and
  Telecommunications in Japan) and ESA (European
  Space Agency)
• The objective of the project is to create a
  satellite-based infrastructure that will allow
  the European and Japanese users to exploit the
  connectivity created for the development and
  trial of new Applications.

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INTELSAT Earth Station used at JEG
Leuk
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Some history of JEG

• JEG started and a 2Mbps Japan-Europe circuit
  became available mid 1997.
• 1997-1998, JEG was used as TDM base.
• The TDM multiplexors used were located in the
  carriers, and thus the configuration change was
  not so flexible and took time.
• When the KEK-CERN joined the JEG, we studied what
  scheme we should have.

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JEG outline topology as of 1997-1998
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JEG Scheme since 1999

• We changed the JEG topology as follows
• Totally ATM based.
• All the projects are to be connected to CRL in
  Japan and to CERN in Europe by ATM.
• Configuration of the ATM switches in CRL and CERN
  are easily changed.

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Outline Topology of JEG Network since 1999
INTELSAT 2 Mbps
KEK
KEK
Yamaguchi E/S
Leuk E/S
IGR
CRL
NCC
CERN
CERN
NCC

• Tele-medicine applications NCC/CRL
  ? IGR
• High-energy physics applications
  KEK ? CERN

IGR Institute of Gustav Roissy at Paris
NCCNational Cancer Center at Tokyo
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• Planned tests on the KEK-CERN JEG
• monarc
• h323
• ipv6
• Three ATM PVCs are configured to do the planned
  three tests independently.
• However ipv6 was not tried at the phase I.
  And monarc and h323 were tried on one
  environment. So only one PVC was actually used.

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• KEKs LAN and CERNs LAN are connected with JEGs
  2Mbps ATM PVC.

JEG
ATM switch
ATM switch
LAN
LAN
Cisco
Cisco
2Mbps
KEK
CERN
Routers are configured so that only some
specific traffic is routed over the JEG circuit.
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• Some characteristic of the JEG circuit
• large but constant RTT 660ms
• guaranteed bandwidth 2Mbps
• This gave very good environment for monarc and
  h323.

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Router configuration at KEK

• enabled each host to choose at anytime which
  route to take between the JEG testbed and the
  production route, by a command in the host
• route add -host x router1,2
• , where x is a host in CERN.
• we wanted to have the same environment in CERN.

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h323
PictureTels LiveLAN -very good at 192Kbps -some
problem at 384Kbps or more -some improvements are
being discussed -used as a base for the
collaboration in monarc
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monarc

• tried to demonstrate the capability of world-wide
  distributed database (replication, WAN access,
  paralleled I/O etc)
• tried to validate the MONARC simulation program
• tried to understand the performance of the
  database over the wide area network
• tried to identify the bottlenecks and possible
  improvements of the distributed database

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monarc (contd.)

• Performance of Data Replication and AMS in
  Objectivity/DB via WAN (JEG) was measured, and
  was compared with the measurement in LAN.
• Found that Data Replication works well in LAN but
  not efficiently in WAN, especially NOT at large
  RTT.
• Some improvements in AMS was proposed to
  Objectivity Inc.
• Details are reported by H.Sato at D235

Evaluation of Objectivity/AMS on the Wide Area
Network
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Present and Future Plan
July 97
Mar 98
Sep Nov98
July 98
Aug 99
2003?
Tele-Medicine
Videoconference
Launch of WINS GCTS
Internet
Measurements
Global 360 (IST98)
IDC98
High-energy physics
Earth Observation
?
Phase 2
JEG Project
Phase 3
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Satellite Internet Applications(Proposal for 2nd
Phase Project)

• 1. Joint Project Framework
• Japan MPT/Sat-Com Application Experiments
  Promotion Conference
• Europe ESA/5th Framework Project?
• 2. Objectives
• Next-generation Satellite Internet Applications
• ltexamplegt Huge data distribution/co-owner
• Broadband multicast satellite down link
• Narrow terrestrial return link
• Inter-continental backbone
• Distributed Databases
• Earth environment data
• High-energy physics data

Regional Satellite Access Networks
Inter-continental backbone
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Summary

• Separately from the production networks, a
  testbed named JEG (Japan-Europe Gamma) was
  provided to us by MPT and ESA during
  June-November 1999.
• ATM PVCs connecting KEK and CERN (2Mbps,
  satellite) for testing MONARC and H323 have
  worked and produced many data without being
  affected by the ordinary traffic.
• The first phase was terminated on 30 Nov 1999,
  then the second phase will start early this year
  with some more bandwidth.