wiki:Embedded Real-Time Measurements

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Project Number


Project Title

Project Title: Embedding real-time substrate measurements for cross-layer communications
a.k.a. Programmable Optical Metrics Interface (obsolete)
a.k.a. Embedded real-time measurements
a.k.a. ERM

Technical Contacts

Principal Investigator: Keren Bergman
Student Developer: Michael Wang
Student Developer: Caroline Lai
Student Developer: Balagangadhar Bathula
Senior Researcher: Cathy Chen

Back row: Howard Wang, *Prof. Keren Bergman (PI), *Dr. Franz Fidler, Gilbert Hendry, Prof. Gil Zussman, Dan Brunina, *Michael Wang, Noam Ophir
Front row: *Caroline Lai, Ajay Garg
*Main researchers on project

Participating Organizations

Columbia University - New York City
Bell Labs Alcatel-Lucent

GPO Liaison System Engineer

Harry Mussman


Ensure GENI includes the technology to support cross-layer communications, specifically, the ability to incorporate a diverse set of real-time measurements in networking protocols. The project addresses the GENI challenge of architectural experimentations across diverse heterogeneous technologies by supporting real-time cross-layer communications and measurements. Our objective is to develop networking capabilities within the GENI infrastructure that enable deeper exposure of cross-layer information and user access to real-time measurements.

Current Capabilities

By the end of year 1, we assessed and proposed the required measurement framework.

For year 2: we plan to develop the hardware and software prototype using a NetFPGA and integrate the subsystem within Cluster D.


MilestoneDate(ERM: GENI requirements for real-time measurements)?
MilestoneDate(ERM: Develop specifications and networking protocols)?
MilestoneDate(ERM: Perform discrete-event network simulations)?
MilestoneDate(ERM: Develop a software architecture)?
MilestoneDate(ERM: Support the GPO in developing an experimental use-case)?
MilestoneDate(ERM: identify a candidate control framework)?

MilestoneDate(ERM: S2.a Prototype UMF software)? status
MilestoneDate(ERM: S2.b Demo software interface from UMF to embedded measurement subsystem)?
MilestoneDate(ERM: S2.c Demo UMF in an experimental use-case)?
MilestoneDate(ERM: S2.d Integrate UMF with BEN)?
MilestoneDate(ERM: S2.e Design and demo XML data exchange software modules)?
MilestoneDate(ERM: S2.f Plan to integrate UMF within anpther infrastructures)?

Project Technical Documents

Spiral 1

Technical Note Milestone 1 The capabilities of GENI's (future) infrastructure with respect to real-time measurements are evaluated and we assess the GENI requirements for real-time user access to measurement data across a diverse set of technologies.
Technical Note Milestone 2 A set of specifications for enabling real-time measurements within the substrate and specifications for networking protocols based on the GENI requirements for real-time user-accessed cross-layer measurements is developed. We identify a set of specifications for the implementation of a unified, integrated measurement framework with the ultimate purpose of limiting the hardware and software overhead and complexity associated with accessing measurement data.
Technical Note Milestone 3 To enable and perform discrete-event network simulations and quantitatively evaluate performance impact under several scenarios of cross-layer information exchange based on real-time measurements we developed new simulation modules for the ns-2 open source network modeling environment and make them available to the GENI community at: ERM software module repository (Columbia University New York, Alcatel-Lucent Bell Labs)
Technical Note Milestone 4 This milestone deals with the development of a measurement framework based on GENI real-time measurement requirements and other developments/resources within the GENI prototyping activities. Interacting with other prototype efforts, we identify and leverage relevant activities, software architectures, protocols, and products. This work deals with a number of software architectures dedicated to network measurements which could serve as an interface between a unified measurement framework (UMF), the control framework, and the GENI experimenter. We assess several network management protocols and data exchange formats with respect to their ability of exchanging measurement and control information between the substrate's performance monitors and the UMF, as well as between the UMF and the GENI control frameworks.
Technical Note Milestone 5 The release of this milestone document was postponed until after the proceedings of the European Conference on Optical Communication were published (end of September 2009). Support GPO in developing an experimental use-case (completed 09/01/2009) The goal of this milestone was to support the GPO in developing experimental designs for use-cases based on our work on a measurement-driven cross-layer communication system. Building on the successful simulation work with the previously developed modules, we validate our cross-layer communication schemes in developing an experimental use-case based on proactive packet protection. We show network simulations, as well as an experimental demonstration, of our packet protection scheme.
Technical Note Milestone 6 We have evaluated various control frameworks to assess the feasibility of joining a GENI cluster and integrating our work on real-time measurements within one of these clusters. In this milestone, we discuss this endeavor and our recent decision to join the Cluster D ORCA team.

Spiral 2

Technical Note Milestone S2.a We outline a prototype implementation of the UMF using a NetFPGA Cube. The UMF uses both software (processor) and hardware (NetFPGA card) components in order to access the measurement data from embedded networking equipment.
Technical Note Milestone S2.b We demonstrate a software interface that is capable of obtaining physical layer measurements from a measurement subsystem, specifically the Polatis switches in the ORCA-BEN network.

Quarterly Status Reports

Quarterly Status Report 4Q08
Quarterly Status Report 1Q09
Quarterly Status Report 2Q09
Quarterly Status Report 3Q09
Quarterly Status Report 4Q09
Quarterly Status Report 1Q10
Quarterly Status Report 2Q10

Spiral 2 Review Slides


K. Bergman, "Embedding Real-Time Substrate Measurements for Cross-Layer Communications", 3rd GENI Engineering Conference, Stanford, CA, 2008.
F. Fidler, "Unified Measurements", 4th GENI Engineering Conference, Miami, FL, 2009.
F. Fidler, "Unified Measurement Framework", 1st GENI Measurement Workshop, Madison, WI, 2009.

Spiral 1 Connectivity

There is no connectivity requirement for year-1 in this project

Participating Projects

Columbia University - New York City

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