Status Report for SLAC/DOE IEPM Project

For July 2003

SLAC Home Page
Work completed or in progress since the last report.

Work Related to Analysis and Development

Web/Grid Service

Paola created several tools to push the IEPM-BW data into the back-end Oracle database. Some early details can be found here.

Warren attended a conference call with Yee-Ting Li and Paul Meallor (UCL) to discuss OGSI schema.

Warren worked on porting the MAGGIE Web service to an OGSI-compliant grid service using the perl module.


Warren and Paola worked to bring up the IPv6 PingER Monitoring.

Paola will make a presentation at the Joint-Techs meeting in Kansas.


Warren continued to work on the NetRat fault finding tool. He worked on analyzing simple statistics (mean, median, variance) for long term (over a year) IEPM-BW data.

TCP Evaluation

Hadrien Bullot (a summer intern) and Les have been putting together tools to enable evaluating and comparing advanced TCP stacks on a production network. Iphicles is set up with HS & Scalable TCP stacks and Hadrien has made measurements, we are now working with Caltech to get the latest FAST TCP installed. We are also working with some folks in Italy to see if we can evaluate Westwood+, and with Aleksander Kuzmanovic to look at TCP-L. With these new stacks we now can saturate networks so we are working more closely withe the remote node contacts toalleviate the impacts.

Digital Divide

Warren talked with Lily Mirafzal of the University of Tehran.

Warren and Les met with Ken Flamm, an economist from the University of Texas working on economic indicators and network performance.

Following a recommendation from the ICFA/SCIC, Warren adding ICTP sites to CERN PingER monitoring.

Warren will present a talk on the Global Digital Divide at the Joint-Techs meeting in Kansas.

Warren had been looking into Funding opportunities to assist with the work on quantifying the digital divide. Les has been looking into the issues of not charging overheads to a charity.


The Internet2 Backbone Measurement Infrastructire (BMI) has agreed to install ABWE to make measurements to/from the measurement hosts close to the core routers.

The IEPM-BW site and Georgia Tech was upgraded and most of the IEPM-BW monitoring has been restored.

Connie, with some ideas from Les and others, has created a new way to visualize traceroute measurements. We can now view traceroute and reverse traceroute measurements see trivial and critical route changes, drill down to RTTs, time of measurements, raw data, route to route number correspondences, and route histories.


Warren replied to an enquiry from the Universidad Michoacana de San Nicolas de Hidalgo in Mexico about the possibility of installing a PingER monitoring site.

Over the last year or so we have lost sites in a few countries due to ping blocking or host changes. With the increased interest in monitoring the Digital Divide, Les has pursued new or reviving contacts in Vietnam, the Philippines, Serbia/Montenegro, Belarus, Macedonia, Turkey, and Tunisia. He is also trying to get contacts for Albania, Cuba, Kenya, Algeria and South Africa. As a result we have recently added hosts in Macedonia, Serbia/Montenegro, Belarus, Turkey, Armenia, Mexico and Azerbaijan.

Work related to Publicity and Information

Joint Tech

Warren will attend the Internet2 Joint-Techs meeting in Kansas. He will present an update on the IEPM-BW/MAGGIE work and a talk about the Global Digital Divide.


Warren will attend the PI meeting at Argonne. He will also visit Fermi and ICAIR.

PFLDnet Workshop

Les, as a co-chair of the Protocols for Fast Long-distance Networks has been heavily involved in recruiting the Technical Program Committee, working to see if we can get ACM cooperation, and preparing a Call For Participation.


Les and Warren attended the July ICFA/SCIC meeting by video, and Les prepared and made a presentation on PingER and the Digital Divide.


The GGF/NMWG paper has been accepted for SC2003. We had more meetings to tie up the NMWG draft of the Hierarchy Document for the GGF8.


Submitted intent to participate in the SC03 bandwidth challenge. Now working with vendors to get high speed connectivity (10Gbits/s) from SLAC to Phoenix. As part of this we will get fiber connectivity from SLAC to PAIX.

Land Speed Record

The Internet2 Land Speed Record is now in the Guinness Book of Records. Worked with LANL and Caltech to look into formally publishing some of the LSR information.


We submiited a quarterly report to the PPDG.

Created July 23, 2003.
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