C OLUMBIA U NIVERSITY Lightwave Research Laboratory Embedded Real-Time Measurements: Project Review, Spiral 1 Findings, and Spiral 2 Plans Franz Fidler, Caroline Lai, Michael Wang, Keren Bergman Cluster D Meeting 2 nd July 2009

C OLUMBIA U NIVERSITY Lightwave Research Laboratory 2 Motivation Next-generation transparent optical networks support mixed bit-rates different, co-existing modulation formats alien wavelengths dynamic optical routing cross-layer optimization … Increase in network flexibility calls for relaxed physical layer performance constraints which then have to be monitored.

C OLUMBIA U NIVERSITY Lightwave Research Laboratory 3 Major GENI Challenges Support embedded real-time measurements and enabling cross-layer communications/optimization for dynamic, impairment aware traffic management Integration of measurement resources and appropriate interfaces into substrate and control plane framework(s) within the GENI prototyping efforts Evaluation of performance impact under several scenarios of bidirectional cross-layer information exchange Monitoring of underlying physical layer conditions during experiments

C OLUMBIA U NIVERSITY Lightwave Research Laboratory Progress in Year 1 Evaluation/development stage: Evaluated and assessed requirements for real-time measurements within future GENI infrastructure Developed a set of interface specifications based on GENI requirements Cooperation with BEN: Proposed a unified measurement framework (UMF) Discrete-event network simulations to evaluate performance impact under several scenarios of cross-layer exchange Assessed possible software architectures for the UMF Joined Cluster D  Progress towards connection with Internet2 via perfSONAR  Plans for experiments by outside GENI researchers: MS due 09/01/2009

C OLUMBIA U NIVERSITY Lightwave Research Laboratory 5 Year 1: Unified Measurement Framework Requirements Access control Acquire measurement data Basic processing Abstraction of measurement capabilities Single point of access Storage capacity Unified interfaces to researcher and control framework Present a uniform view of measurement capabilities within the substrate and make them sliceable/accessible. Performance monitors Substrate Meas ? ? ? ? ! ! ! ! Access point GENI researcher Access point GENI researcher GENI control framework GENI control framework Unified measurement framework

C OLUMBIA U NIVERSITY Lightwave Research Laboratory 6 Year 1: Unified Measurement Framework Implementation (Example) Milestone 3, Real-Time Measurements Performance monitors NDL or RSpec GENI control framework GENI control framework Hardware Server + NetFGPAs Hardware Server + NetFGPAs XML based Access point GENI researcher Access point GENI researcher SNMP TL1 SCPI Software perfSONAR, SILO, GIMS, … Software perfSONAR, SILO, GIMS, … UMF

C OLUMBIA U NIVERSITY Lightwave Research Laboratory Plans for Spiral 2 Implementation and integration stage: Prototyping: Design and develop hardware implementation of UMF Establish and demonstrate the interface between the hardware implemented UMF and a networking device that is capable of embedded physical layer measurements (e.g. bit-error rates, optical power monitoring) Start integrate efforts with ORCA/BEN network substrate at RENCI Design XML data exchange software for interfacing with the researcher/software measurement framework, to export measurement data