Transcript UCLP demo at APAN Taipei 2005 - Asia Pacific Advanced Network

NCHC & KISTI’s
User Controlled LightPaths (UCLP);
demonstrations at
APAN Taipei 2005
Hervé Guy
[email protected]
Friday 2005.8.26; 14:00-15:30; Room C
NCHC & KISTI’s UCLP
demo at APAN Taipei 2005
> Hervé Guy’s BIO
– I am working with CANARIE INC, at Ottawa, in
CANADA since 1995.
– I have joined the Advanced Research Network
group, which are responsible of the deployment of
CA*net Network in Canada, in 1998.
– I was leading the “STATS” initiative on CA*net 4
between 1998 and 2002.
– I am now managing the development of the UCLP
(User Control LightPath) Software since 2003.
NCHC & KISTI’s UCLP demo
at APAN Taipei 2005
> UCLPv1
– History & deployment of UCLPv1 on CA*net 4
– What is not and is UCLP?
– International deployment of UCLPv1
> NCHC’s UCLPv1 demo at APAN Taipei
> KISTI’s UCLPv1 demo at APAN Taipei
> UCLPv2
– What will be UCLPv2?
NCHC & KISTI’s UCLP demo at
APAN Taipei 2005
User Controlled
LightPaths
version 1;
UCLPv1
CANARIE's Directed Research Program
History of UCLPv1 Software
> Co-funded by Cisco Canada and CANARIE
(http://www.canarie.ca/funding/research/projects.html)
> Held in 2003.
> 10 proposals submitted
> 3 proposals selected
– University of Waterloo
(http://bbcr.uwaterloo.ca/~canarie/index.htm)
– University of Ottawa - Communications Research Centre (CRC)
(http://phi.badlab.crc.ca/uclp/)
– Université du Québec à Montréal (UQAM)
(http://www.teleinfo.uqam.ca/opticnet/)
UCLPv1 deployment on CA*net 4
(http://www.canarie.ca/canet4/uclp/uclponc4.html)
> For ease of management of lightpath on CA*net 4, a user must
comply with CANARIE's Lightpath Allocation Policy and must
fill out CANARIE's Lightpath Request Form.
> Only registered source IP addresses will be permitted to
connect to the lab. Requests are to be sent to [email protected].
> UCLPv1 deployed:
– University of Waterloo v1.5:
• https://uclp01.canet4.net/web-uclp/.
– University of Ottawa - Communications Research Centre (CRC)
v1.4beta;
• Federation 3rdw: http://205.189.33.55:8080/uclpclient.jnlp;
– Université du Québec à Montréal (UQAM) v1.4.
• Via the UCLPGUI.exe client ().
> Log in as a normal user. C4NOC are administrative users.
What is not UCLP?
Confusion about UCLP
> UCLP is often wrongly associated with other
dynamic optical switching protocols.
> UCLP has nothing to do with optical control
planes or providing bandwidth on demand.
> Primary purpose is NOT
–
–
–
–
a dynamic switched optical networks
a reservation and leasing of wavelength resources
an end-to-end optical VPNs
an inter-domain connection of LightPaths
What is UCLP?
UCLP Objectives
> UCLP is an IP network provisioning and configuration tool
– it allows the creation of application or discipline specific IP
networks that can be built from optical paths obtained from a
mix of heterogeneous network resources across different
management domains
– Similar in concept to X-bone VPN overlay network, except at
layer 1
> User controlled traffic engineering
– Active replacement for Sockeye and Route Science
– Alternative to MPLS
What is UCLPv1? It talks about
users empower the network!
1st & 2nd wavelengths – 10 Gbps
3rd wavelength – 10 Gbps
4rd and 5th wavelengths are coming soon…
CA*net 4;
a layer 1 network
What is UCLPv1?
What is a LightPath?
> According to “User controlled Lightpath Definition Document
(http://www.canarie.ca/canet4/library/c4design/user_controlled_def
inition.ppt)”, created by Bill St. Arnaud in December 2002:
– Any uni- or bi-directional point to point connection with effective
guaranteed bandwidth
> Examples of LightPaths on CA*net: STS channels on a SONET or
VC4 channels on SDH circuits
LightPath has
Bandwidth, start and
end points
ons-ott01; slot 12;
port 1; channel 72
STS24c (OC24)
ons-tor01; slot 5; port 1; channel 72
What is UCLPv1?
CA*net 4 is a pool of LightPaths
- Which have been created by UCLP admin (e.g. c4noc).
What is UCLPv1?
What are the Users?
You!
?
That simply wants
to best achieve
your job!
What is UCLPv1? Users take
control of LightPaths on CA*net4
- Ownership of LightPaths is the starting point…
- Ownership period has a start now and end dates
.
What is UCLPv1? Users creates
an e2e connections on CA*net4
- Users access the LightPaths and run their applications during the
requested period.
access LPs
concatenate LPs
access LPs
What is UCLPv1? It talks about
users empower the network!
> During the period where a user owns
the LightPaths, it could
– Partition LightPaths;
– Concatenate LightPaths;
– Advertise unused LightPaths (i.e. make them
available for another users).
– Create/delete the e2e connections (access
LightPaths).
What is UCLPv1? Users deletes
the e2e connections on CA*net4
At the end of the ownership period, the users loose the ownership of
the LightPaths. LightPaths come back the pool .
International deployment of
UCLPv1
> i2CAT/UPC Network (ES)
– U. of Ottawa - Communications Research Centre
(CRC) - i2CAT/UPC;
> SURFnet/NetherLight (NL)
– University of Waterloo:
– U. of Ottawa - Communications Research Centre
(CRC)
– Université du Québec à Montréal (UQAM)
> www.grangenet.net (AU)
– U. of Ottawa - Communications Research Centre
(CRC)
UCLPv1 deployment on
TWAREN, Taiwan, Asia
NCHC’s UCLPv1
demo at APAN
Taipei 2005
2005 / 08 / 26
UCLP Demonstration
In 20th APAN meetings
Te-Lung Liu
Associate Researcher
NCHC, Taiwan
19
National Center for High-performance Computing
NCHC
 NCHC is Taiwan’s only National Lab dedicated to
 High-Performance Computing & applications
 Networking & its applications development
 Mission
 Provide resources and service
 Research and development
 Offer education, training, and outreach
 Key Events
 1991: Government approved the establishment proposal
 1993: Completed HQ new building in Hsinchu Science Park
 2002: Established a branch in Tainan (in Southern Taiwan)
 2003: Transformed into an non-profit organization
 2005: ISO 9001:2000 certified / NOC building opening
20
TaiWan Advanced Research and Education Network
TWAREN
 TWAREN - Successor of TANet2
 TWAREN - Part of a comprehensive, six-year national development plan
formulated by the government to stimulate creativity and foster talents.
 TWAREN Goals
• To provide a network infrastructure for academic and research
community.
• To stimulate creativity and foster talents
 TWAREN Architecture
• TWAREN is a new hybrid network with 20G POS and DWDM
technologies at its core.
• Dual circuits form the backbone. Each of the two local carriers
provides a 10 G POS network linking the four core nodes.
• There are eleven GigaPoPs, each links to the core node at 20 Gbps
and 1 dark fiber.
• Hierarchical topology: 3 layers (core, GigaPoPs, end nodes)
• Highly scalable and flexible
• Providing multiple services
21
TWAREN Connections to North America
Pacific Wave
CANARIE
StarLight
NTU
NCU
CANARIE
Sinica
Taipei
NCTU
NTHU
Hsinchu
NTU
1.25G
NCHU
Taichung
NCNU
MAN LAN
Tainan
CCU
NCKU
NSYSU
Pacific Wave
South
22
NCHC Relationship with UCLP
Lease a lightpath from CANARIE
between Seattle and Chicago.
Lightpath between
TWAREN/CA*Net4/HEAnet (18,000km)
 5-point videoconferencing among Taiwan (Asia),
Canada (NA) and Ireland (Europe) in March, 2004
UCLP training class in Taiwan by
CANARIE engineers, joined by Korea
via videoconferencing
Collaborated with CANARIE to make
UCLP compliant with Cisco ONS 15454
23
Demo Setup in NCHC
To CA*Net4
ONS@Seattle
TP-CHT-15454
ASCC-7609
GE
ASne
t
ASCC-15454
10GE
Seattle-15454
APAN
Venue@TP
HC-15600
TP-15600
SF-15454
TN-15600
TWAREN
HC-15454
NCHC@Hsinchu
TN-15454
NCHC@Tainan
24
Demo Setup in NCHC
To CA*Net4
ONS@Seattle
TP-CHT-15454
ASCC-7609
GE
ASne
t
ASCC-15454
10GE
Seattle-15454
APAN
Venue@TP
HC-15600
TP-15600
SF-15454
TN-15600
TWAREN
Step 1.
RED LP is created
as a virtual LPO
HC-15454
NCHC@Hsinchu
TN-15454
NCHC@Tainan
25
Demo Setup in NCHC
To CA*Net4
ONS@Seattle
TP-CHT-15454
ASCC-7609
GE
ASne
t
ASCC-15454
10GE
Seattle-15454
APAN
Venue@TP
Step 2.
Green LP is provisioned
by UCLP
HC-15600
TP-15600
SF-15454
TN-15600
TWAREN
HC-15454
NCHC@Hsinchu
TN-15454
NCHC@Tainan
26
Demo Setup in NCHC
To CA*Net4
ONS@Seattle
TP-CHT-15454
ASCC-7609
GE
ASne
t
ASCC-15454
10GE
Seattle-15454
APAN
Venue@TP
HC-15600
TP-15600
SF-15454
TN-15600
TWAREN
HC-15454
TN-15454
Step 3.
Blue LP is provisioned
by UCLP
NCHC@Hsinchu
NCHC@Tainan
27
Virtual Topology
Venue
Tainan
Multi-point Communication
GE
GE
GE
Hsinchu
28
Acknowledgements
Special thanks to the members of APAN
demo team
NCHC
KISTI
Canarie
Hervé Guy
Jun Jian
Thomas Tam
Dongkyun Kim
Wontaek Hong
JongWon Kim
Eugene Yeh
Jing-Jou Yen
Te-Lung Liu
Bob Wang
Jazz Wang
Jake Tsai
Daniel Lin
…and every participants!
29
UCLPv1 deployment on
KREOnet, Taiwan, Asia
KISTI’s UCLPv1
demo at APAN
Taipei 2005
UCLP Demonstration
Aug 26, 2005
20th APAN Meeting, Taipei
Wontaek Hong
Supercomputing Center, KISTI
Contents
•
•
•
•
•
KISTI & KREONET
GLORIAD
UCLP Deployment on KREONET
Stereoscopic HD Video Setup for Demo
Demonstration
Korea Institute of Science and Technology
Information
Major Functions

Knowledge Infrastructure for Digital Research
- Advancement of Supercomputer and KREONET
- Research on the next generation technology, knowledgebased GRID, e-Science and research network

Supercomputing
Center
Knowledge Information Portal
- Information collection, management, and diffusing
system
- Digital information dissemination environment using
DOI, MDR

National Role
Value-added Information
- In-depth analysis and feasibility study
- Use of Supercomputer for BT and NT information
Science & Technology
Information Center
Knowledge Resources
Development Center
Korea Research Environment Open
Network
• KREONet2
– National Scientific Research Network funded by
MOST (Ministry of Science and Technology) since
1988
– Nation-wide optical & gigabit backbone network
– 12 GigaPoPs in 11 regions (5 ~ 10Gbps)
– About 200 members : Universities, National
Research Labs, government organizations, etc.
– High-capacity access network(1Gbps~10Gbps) : 30
members
– Supporting advanced applications : e-Science and
Grid
KREONet2 Overview
e-Science based
KREONET/KREONet2/SuperSIReN
→ joining global Cyber Infrastructure
KREONET
Seoul
KREONet2
Incheon
Suwon
Chonan
SuperSIReN Daejeon
Jeonju
Daegu
ChangKwangju won
Busan
Pohang
APII
TEIN
Japan/SINET
Europe
China/CSTNET
High-Performance S&T Facilities
(High-Performance Cluster/Supercomputers, Storage,
Experimental Facilities, Visualization, Access Grid, DB Servers, etc.)
GEANT
GLObal RIng Network for Advanced
Applications Development
• “Global Ring” topology for advanced
science applications
– Little GLORIAD, founded by US, Russia, China Jan. 2004
• 4th core member participation – Jun.
2004
– NSF Award for GLORIAD (P.I. Greg Cole) – Jan.
2005
– Funding from Korean government (MOST) – Mar.
2005
• Support advanced application
developments
– HEP, ITER, Astronomy, Earth System, Bio-Medical,
GLORIAD TransPacific Links
Russia
(Novosibirsk)
Canada
Calgary
Moscow
US
Toronto
NYC
2.5G -> 10G
Amsterdam
China
(Beijing)
KOREA
Hong Kong 10G (Daejeon)
Aug. 2005
Seattle
10G
Chicago
EU
Setup for UCLP Demo
CA*net4, CANARIE, Canada
KREONet2, KISTI, Korea
ONS15454
ONS15454
ONS15600
STS24c
STS24c
ONS15454
STS48c
STS12c
STS24c
Daejeon
Seattle
Gwangju
ONS15454
1GigE
TWAREN
1GigE
Cisco 4506
1GigE
Stereo HD VoD Server
GIST, NetMedia LAB
HD Receiver in Taipei
UCLP deployment on KREONET
• History
– 1G Lightpath provisioning between Daejeon-ons
and Daegu-ons
– Large scale deployment of UCLP on KREONet
– Deployment for APAN2005 in Taipei
• Current work
– Support ASAP-4 Cards in ONS15600
• OC-N: STS-<slot>-<PIM>-<PPM>-<PORT>-<STS>
• VFAC: VFAC-<slot>-<PIM>-<PPM>-<PORT>
– Design of operating with Ethernet (VLAN)
• For example, Force10 switch
Stereoscopic HD Video setup for Demo
KISTI(KR) to APAN(TP) LPs
• On KREONET
– via the crcott’s UCLP client
• Scenario
– Log in into crcott’s UCLP
– Create e2e connection between the remote
Participant and the meeting venue
• Request the following LPs:
– Gwangju-ons/ slot x/ port x/ channel x-x
 Gwangju-ons  Daejeon-ons15454  Daejeonons15600  ons-sea02  ons-sea01 
ons-sea01/ slot 2/ port 1/ channel 25-36
– Send the HDV stream to the meeting venue
– Delete the e2e connection
APAN2005 Taipei UCLP Demonstration
Acknowledgements and thanks to:
CANARIE, NCHC, GIST, ANF, KAIST &
[email protected] researchers, and engineers
KAIST
CANARIE
NCHC
KISTI
ANF, GIST
Hervé Guy
Tomas Tam
Jun Jian
CA*net4 NOC
Eugene Yeh
Te-Lung Liu
Ming-Chang Liang
Jing-Jou Yen
Bob Wang
Dongkyun Kim
Wontaek Hong
Woojin Seok
Yongtae Kim
KREONet2 NOC
Jeongho Lee
Jongwon Kim
Yusung Kim
Ki-young Lee
ANF HDTV TFT
GIST HDTV Team
NCHC & KISTI’s UCLP demo at
APAN Taipei 2005
User Controlled
LightPaths
version 2;
UCLPv2
What is UCLPv2?
Purpose
> April 2005 CANARIE issued a call for proposals for
UCLPv2, with the objective
– to adapt the development of the UCLP software developed under
the Directed Research program in 2003-2004 and make it robust
and user friendly for wider scale deployment by providing a
graphical user interface (GUI) and providing web service
workflow capability.
> The project proposals were due at the end of May
2005.
> Total budget for this RFP is $1.4 million.
> Now, 4 proposals has been selected.
> All projects will have to be completed by March 30,
2006.
What is UCLPv2?
From LightPaths to APNs…
> Now let’s imagine that the users would like to manage a subset
of CA*net as part of their network including add/drop, routing, partition,
concatenate, etc.
Edmonton
Saskatoon
Vancouver
Winnipeg
Victoria
Calgary
Seattle
Regina
CA*net 4 router
2G Lightpath WS
GbE interface WS
Ottawa
Montreal
Toronto
Fredericton
Chicago
New York
Halifax
What is UCLPv2?
From LightPaths to APNs…
Edmonton
Saskatoon
Vancouver
Winnipeg
Victoria
Calgary
Seattle
Regina
Ottawa
Montreal
Toronto
Fredericton
Chicago
New York
Once the users takes the ownership of the subset
of CA*net, it would like to partition them and create the endto-end connections on request.
Halifax
What is UCLPv2?
From LightPaths to APNs…
Edmonton
Saskatoon
Vancouver
Winnipeg
Ottawa
Regina
Victoria
Montreal
Toronto
Seattle
Fredericton
Chicago
New York
Here is the result (i.e. the logical view) on NRC’s need!
Halifax
What is UCLPv2?
From LightPaths to APNs…
> UVLPv2 is an extension of UCLPv1’s concepts of
LightPaths and Users.
> In UCLPv2, the LightPaths and Network Interface (e.g.
the GigE ports) become some web services (WS)
resources.
> The APN resource list is a pointer to a set of the abovedefined WS,
> Finally, an APN (Articulated Private Network) is
essentially a workflow script created by the Network
Administrator (e.g. CANARIE) that points to a collection
of Network LightPaths and Interfaces (e.g. the APN
resource list), destined to the APN administrators (e.g.
NRC).
What is UCLPv2?
From LightPaths to APNs…
> The APN Administrators can download and run the APN
workflow script and create functioning APN (e.g. NRC’s
CA*net 4 APN).
> An APN could be merge to other APNs for forming a
new APN (e.g. NRC’s CA*net 4 APN + NRC’s private
APN + SURFnet’s APN).
> The APN could be re-advertise all or some of the APN
resource list to other users.
> Finally, the normal users (e.g. NRC’s users) can take
control of the APNs resources and establish their own
e2e connections.
What is UCLPv2?
UCLPv2 in a nutshell!
> UCLPv2
– Graphical interface to allow users to create
Articulated Private Networks (APNs)
– All lightpaths represented as web services
that are consumed by user by linking through
portal on workflow engine
> BPEL or Keppler to link APNs together to
form end to end LightPaths and to link
instruments.
What is UCLPv2?
The Physical Network view
UCLPv2 GUI has multiple resource windows. Here is the resource view
of ONS physical network on CA*net 4 available for APN composition.
YEG
YUL
Interface WS
YVR
YOW
Winnipeg
YYZ
TRIUMF
YCG
Halifax
OME
LightPath WS
Pwave HDX
STAR LIGHT HDX
MAN LAN HDX
10G STS partitionable interface
1Gbe non-partitionable interface
C4noc’s view of ONS physical network on CA*net 4.
What is UCLPv2?
The Physical Network view
Here is another resource view of OME physical network on CA*net 4
available for APN composition.
ONS
ONS
Montreal
ONS
Vancouver
ONS
BCnet
Toronto
Ottawa
MAN LAN HDX
Chicago
New York
Seattle
STAR LIGHT HDX
Pwave HDX
OC192 Interface
GbE Interface
What is UCLPv2?
APN Resource List Creation
Lightpath Object Creation
YEG
CANARIE ONS Network
Resources
1
YVR
YUL
ONS
OME Vancouver
BCnet
Pwave HDX
3
Chicago is hidden
ONS
New York
Chicago
Seattle
Victoria
2
MAN LAN HDX
4
Toronto
Vancouver
Montreal
SURFnet
APN
Halifax
resources advertised
to
Amsterdam
Ottawa
CANARIE
MAN LAN HDX
ONS
Toronto
STAR
ChicgaoLIGHT HDX
Edmonton
Edmonton
YYZ
TRIUMF
CANARIE OME YCG
Network Resources
Toronto
YOW
Winnipeg
STAR LIGHTOttawa
HDX
Edmonton
New York
Amsterdam
ONS
Geneva
5
Montreal
To Fermi
New York
New APN Resource list composition
To Brookhaven
Geneva
View
by
c4noc
What is UCLPv2? CANARIE provides
APN resource list to TRIUMF
1G Interface WS
CANRIE makes Triumf’s APN available at
URI: http://canarie_apns/triumf_apn.ws
5G Interface WS
10G LightPath WS
1G LightPath WS
Toronto
Ottawa
Vancouver
Victoria
Amsterdam
Edmonton
Montreal
To Fermi
New York
To Brookhaven
TRIUMF’s APN Administrators downloads and runs the
Triumf’s APN workflow script and create functioning
Triumf’s APN.
Geneva
What is UCLPv2? TRIUMF GUI
harvests other APNs from UoVic, UoT…
TRIUMF
Tier 1
UBC
Physics
UoVictoria Physics
Tier 2
TRIUMF
APN
1G Interface WS
UoToronto Physics
Tier 2
UA
Physics
5G Interface WS
UoT
Physics
UoT
APN
Toronto
10G Lightpath WS
UdM
Physics
Carleton
Physics
External links or APNs
Amsterdam
Vancouver
Edmonton
Montreal
UoV
APN
Ottawa
Victoria
CA*net 4
New York
Geneav
Chicago
Note: Typical View on
TRIUMF UCLP GUI
FERMI
Tier 1
Brookhaven
Tier 1
CERN
Tier 0
What is UCLPv2? TRIUMF/HEPnet
Lightpath Object Composition GUI
UBC Campus
CWDM Lightpath
Object
UoVic Campus
802.11 Lightpath
Object
TRIUMF APN
Toronto
Ottawa
Vancouver
Amsterdam
Edmonton
Montreal
To Fermi
Victoria
New York
UoVic
Vancouver
Victoria
Composition Window
TRIUMF
Lightpath Object for 2 Gbp
Tiier 2between TRIUMF and UoVic
To Brookhaven
Geneva
What is UCLPv2? UoVic Physics use
UCLPv2 GUI tool for adding Router WS to
lightpath object
UoVic Physics router
resource
CLI interface exposed as
a WS
Resource Window
UoVic
TRIUMF
Vancouver
Victoria
Lightpath Object for 2 Gbp
Tiier 2between TRIUMF and UoVic
Created by TRIUMF/Hepnet
UoVic
TRIUMF
Vancouver
What is UCLPv2? TRIUMF partitions
APN and creates several child APNs
TRIUMF
Tier 1
UBC
Physics
UoVictoria Physics
Tier 2
UoToronto Physics
Tier 2
UA
Physics
UoT
Physics
CWDM
CWDM
Toronto
Vancouver
5G Tier 1 data
2G Tier 2 data
Carleton
Physics
UdM
Physics
Amsterdam
Edmonton
Victoria
To other physics users at
smaller universities
Note: Typical View on
TRIUMF UCLP GUI
1G HEPnet daisy chain
routed
Ottawa
CA*net 4
Optional
interfaces
New York
Geneav
Chicago
FERMI
Tier 1
Brookhaven
Tier 1
CERN
Tier 0
What is UCLPv2? TRIUMF
creates child APN for HEPnet
Note: View seen by HEPnet UCLP GUI
UBC
Physics
UA
Physics
Toronto
Vancouver
Edmonton
1G Interface WS
UoT
Physics
Carleton
Physics
Ottawa
UoV
APN
UdM
Physics
Montreal
CERN
Victoria
CA*net 4
Note: TRIUMF has created this child APN from elements
from the original CANARIE APN and the APNs provided by
UoVictoria, TRIUMF, UoT, etc
HEPnet APNcannot see
switches in Amsterdam
or NY
What is UCLPv2? Resultant
HEPnet routed network
1G Interface WS
UBC
Physics
UA
Physics
UoT
Physics
Carleton
Physics
UdM
Physics
Montreal
UoV
APN
CERN
CA*net 4
To smaller physics depts
through university router
NCHC & KISTI’s UCLP
demo at APAN Taipei 2005
> [email protected];
> 4 countries; 17 members; tons of emails…
> canarie.ca
> kisti.re.kr
– Hervé Guy ([email protected])
– Jun Jian ([email protected])
– Thomas Tam
>
([email protected])
>
– Dongkyun Kim ([email protected])
– Wontaek Hong ([email protected])
netmedia.gist.ac.kr
– JongWon Kim
nchc.org.tw
([email protected])
– Jing-Jou Yen ([email protected]) – Seokhee Lee ([email protected])
– Eugene Yeh ([email protected])
– Kiyoung Lee ([email protected])
– Te-Lung Liu ([email protected])
– Jongryool Kim ([email protected])
– Jake Tsai ([email protected])
> gate.sinica.edu.tw
– Daniel Lin ([email protected])
– Yu-lin CHANG
– Bob Wang ([email protected])
([email protected])
– Jazz Wang ([email protected])
NCHC & KISTI’s UCLP demo at
APAN Taipei 2005
> Special thanks to Participants:
– CANARIE (CA)
• Hervé Guy ([email protected])
– NCHC (TW)
• Te-Lung Liu ([email protected])
– KISTI (KR)
• Wontaek Hong ([email protected])
NCHC & KISTI’s UCLP
demo at APAN Taipei 2005
Question?
Hervé Guy ([email protected])
Te-Lung Liu ([email protected])
Wontaek Hong ([email protected])