1. E-VLBI Software Suite & DRAGON Interoperability Chet Ruszczyk, Jason Soohoo

2. Introduction Software Applications / Tools for e-VLBI –Real-time –non-real time DRAGON Interoperability –Application Interface –Network communities assumptions –Next Steps

3. Software Components Software suite for e-VLBI (Alpha Version) – Components: VIM – VLBI User Interface and Management (CGI / Perl) –Experiment description (XML) –EGAE management / monitoring –E-VLBI experiment based »Network Monitoring / Performance EGAE (python) –Control of Mark5A’s »Interprets XML description of experiment »Application control/setup/execution »Network tuning »Network testing Vtp – VLBI Transport Protocol Application (C++) –VSI-E application

4. DRAGON Interoperability Defining a general application XML schema –Any application can request service Network centric Missing Components –Super scheduler interface Long term reservation policy unavailable (1 year) Two main areas –Requesting Service –Initiating Setup / Teardown

5. E-VLBI XML Schema Updates

6. DRAGON Interoperability (cont) Requesting Service –AST services request to AST Master Specify node / link resources –Node is end-point resources –Network link resources Will determine if resource can be reserved –Return status success / failure Initiating Configuration Send message to initiate setup of service Network test (EGAE) Transfer data (EGAE) Termination of services Application complete Reservation expired

7. DRAGON Interoperability (cont) Application integration open issues –Configuring of network interfaces Aliases on the interface Apriori knowledge required –Difficult to policy to enforce »Manual configuration may pose problems –Service Termination Duration based Application based –Translation between e-VLBI schema and AST schema –Configuration options DRAGON Applications EGAE

8. EGAE AST Module

9. Next Steps Integration testing –Request / Setup / Tear down circuit –Translation between XML schemas –Application demonstration Real-time experiment –Dynamic resource allocation –E-vlbi real-time demo »Bandwidth requirements (512Mbps– 1Gbps) –Termination