Optical Networks and eVLBI Bill St. Arnaud

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 UK SE FR NL BE DE1 DE2 CZ PL CH IT AT SURFnetJANETGARRPSNCDFN NORDUnet 2.5G 10G JIVE 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 UK SE FR NL BE DE1 DE2 CZ PL CH IT AT SURFnetJANETGARRPSNCDFN NORDUnet JIVE EVN sites will see 2 BGP routes to SURFnet: -the normal IP route over GEANT -Express route using dedicated lightpaths (in green) Express route

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 – >NEESgrid Tele-Operation Network Protocol – >Common Instrument Middleware Architecture – >EU GridCC – >CABA open building interexchange web services for high voltage AC and building management systems –