Optical Networks and eVLBI

1
Optical Networks and eVLBI

• Bill St. Arnaud bill.st.arnaud_at_canarie.ca

2
CANARIE Inc.- Overview

• Federal leadership Concept born in 1990 out of
  Industry Canada discussions
• Founding Incorporated in 1993 by industry and
  academia
• Funding From Industry Canada For networks and
  research applications from Canadian Heritage,
  HRDC, Health Canada
• Mission To facilitate development and use of
  Canadas advanced communications infrastructure
• Primary stakeholders Government Departments,
  universities, provincial research networks,
  broader research community, colleges, carriers,
  IT sector, SMEs, broader education sector,
  broader health sector, provinces

3
(No Transcript)
4
CAnet 4 DriversApplication Specific Networks

• Soon high end grid applications will have
  sufficient traffic volume to require their own
  underlay networks Complementing routed networks
  
• Not a replacement for routed networks only
  increasing the direct peering mesh of the routed
  network for specific applications
• But peering may be more dynamic (and not globally
  advertised) than traditional IP BGP peering
• Discipline or applications specific networks
• VBLI grids like European EVN
• High energy physics grid Ultralight
• NEES grid, Bio-informatics Grid, etc

5
eVLBI driving network architectures

• MERLIN in UK links several radio dish sites with
  optical fiber network
• European EVN and LOFAR will built around optical
  lightpaths on GEANT network
• In Canada eVLBI is mostly used for Geodetic
  applications
• GPS corrections
• Measuring movement of Canadian shield
• DRAO (astronomical dish) will be soon connected
  to CAnet 4 network so that they can participate
  in global eVLBI

6
S2 VLBI Space Observatory
7
Example EVN traffic flows over GEANT
SE
UK
JIVE
PL
CZ
BE
NL
DE2
DE1
FR
CH
AT
2.5G 10G
IT
Provided courtesy of Dai Davies
8
Issues

• How do you charge for bandwidth and usage when
  single application traffic dwarfs all other IP
  traffic?
• Possible solutions
• GMPLS (with QoS)
• Requires expensive routers and complex
  coordinated central management to setup and tear
  down tunnels
• Interdomain still unproven
• Optical overlay/underlay ASON
• same problems as GMPLS
• Application specific UCLP networks
• Increase BGP mesh for specific applications or
  disciplines

9
UCLP applied to EVN
Express route
SE
UK
JIVE
PL
CZ
BE
NL
DE2
DE1
FR
CH
AT

• EVN sites will see 2 BGP routes to SURFnet
• the normal IP route over GEANT
• Express route using dedicated lightpaths (in
  green)

IT
10
What is UCLP?

• User Controlled LightPaths a configuration and
  provisioning tool built around web services
• Third party (e.g. eVLBI) can concatenate cross
  connects together from various networks to
  produce a wide are network that is under their
  control
• Articulated Private Network (APN)
• Uses Service Oriented Architecture (SOA) and so
  network can be integrated with other web service
  applications such as instruments and software
  correlators
• Allows eVLBI users to change configuration and
  topology of the optical network to meet research
  needs

11
(No Transcript)
12
GLIF links
13
Recommended Browsing

• UCLP Roadmap Document
• http//www.canarie.ca/canet4/uclp/UCLP_Roadmap.doc
  
• LOOKING
• http//lookingtosea.ucsd.edu/
• NEESgrid Tele-Operation Network Protocol
• http//it.nees.org/documentation/pdf/TR-2004-23.pd
  f
• Common Instrument Middleware Architecture
• www.instrument-middleware.org
• EU GridCC
• http//www.canarie.ca/conferences/advnet2004/ppt/m
  aron.ppt
• CABA open building interexchange web services for
  high voltage AC and building management systems
• http//www.caba.org/councils/obix.html