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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