Transcript In preparation of Workprogramme 2000 IST: overview of status

Optical Networks and eVLBI
Bill St. Arnaud [email protected]
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 Canada’s 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
CA*net 4 Drivers
Application 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
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
CA*net 4 network so that they can participate in global
eVLBI
S2 VLBI Space Observatory
Example – EVN traffic flows
over GEANT
SE
NORDUnet
JANET
UK
JIVE
PL
SURFnet
CZ
PSNC
BE
NL
DFN
DE2
DE1
FR
2.5G
10G
CH
AT
IT
GARR
Provided courtesy of Dai Davies
Issues
> How do you charge for bandwidth and usage when single
application traffic dwarfs all other IP traffic?
> Possible solutions:
1. GMPLS (with QoS)
• Requires expensive routers and complex coordinated
central management to setup and tear down tunnels
• Interdomain still unproven
2. Optical overlay/underlay –ASON
– same problems as GMPLS
3. Application specific UCLP networks
– Increase BGP mesh for specific applications or disciplines
UCLP applied to EVN
Express route
SE
NORDUnet
JANET
UK
JIVE
PL
SURFnet
CZ
PSNC
BE
NL
DFN
DE2
DE1
FR
CH
EVN sites will see 2 BGP routes to SURFnet:
-the normal IP route over GEANT
-Express route using dedicated lightpaths (in green)
AT
IT
GARR
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
GLIF links
Recommended Browsing
>
UCLP Roadmap Document
–
>
LOOKING
–
>
www.instrument-middleware.org
EU GridCC
–
>
http://it.nees.org/documentation/pdf/TR-2004-23.pdf
Common Instrument Middleware Architecture
–
>
http://lookingtosea.ucsd.edu/
NEESgrid Tele-Operation Network Protocol
–
>
http://www.canarie.ca/canet4/uclp/UCLP_Roadmap.doc
http://www.canarie.ca/conferences/advnet2004/ppt/maron.ppt
CABA open building interexchange web services for high voltage
AC and building management systems
–
http://www.caba.org/councils/obix.html