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Carla Hunt, MCNC (Chair)
Tom Throckmorton, MCNC
Greg Henkle
John ?
Eric Boyd, Internet2
Jennifer Schopf
Brian Tierney, ESnet
Ken Lindahl, UC Berkeley
Russ Hobby, Internet2
Someone from APAN
Grant Miller
Azher Mughai, Cal Tech
Mike Van Norman, UCLA
Sandor Rozsa, CERN
Matt Zekauskus, Internet2
Rich Carlson, Internet2
Jeff Boote, Internet2
Aaron Brown, Internet2 (scribe)
Jason Zurawski, Internet2
Chris Robb, Internet2
Emily Eisbruch, Internet2
Discussion
Before getting into the presentations, Carla discussed modifying the working
group structure. Originally, we had split into a group of task forces that were
each tasked with looking into best-common practices. However, it was decided
that it would be better to have the group work on all of the topics than to
break up into the task forces. She also asked whether meetings should happen on
a monthly or biweekly basis, but no consensus was reached.
Measurement Lab:
Richard Carlson gave a presentation about measurement lab which is a consortium
of parties interested in monitoring commodity networks. The model is more like
IETF where it's a group of individuals, instead of a corporate project.
Measurement Lab started six months ago at a workshop in CA. The topic of the
workshop was the Network Neutrality issue. The idea that came from it was that
if consumers were given accurate information about how an ISP is shaping their
traffic, they will make better decisions in their ISP selection. The problem
statement that was developed for this group shares significant overlap with
problems encountered in R+E networks. The biggest issue is that diagnosing
performance problems in these environments is difficult. The problem could be
host configuration, application choice, or infrastructure anywhere in the
network between the end hosts. As to application choice, Rich gave the example
of SCP which has internal buffers that limit its performance even if the host
and the network are properly configured and working.
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Carla asked how the tools were being registered in the Lookup Service. Rich
said that he was using a script written by Aaron Brown to register them. The
script would periodically poll the service to see if it was running, and
refresh the LS registration. Aaron said that he has an RPM, and that the
software might be made available during the next formal release of the
perfSONAR-PS software. Jeff said that they were still looking at the best way
to do the registration, whether to have a daemon register on behalf of the
service or having the service register itself. Rich pointed out an issue with
the current NPAD/NDT registration where the web frontend is being registered,
but not the test frontend, which makes it difficult to write automated tools.
Multi-Vendor 10 Gigabit Testing:
Matt Zekauskus and Tom Throkmorton talked about some testing that they've been
doing for the last year and a half with some folks in EU. They've been testing
how well 1G and higher speed circuits work between differing vendor hardware
over long distance. They've been testing an Alcatel in England, an HDXc and an
OME in MANLAN, and a CoreDirector in New York.
...
Greg asked if this meant that there's not been much 10GigE interoperability
testing. Matt said that there wasn't much testing being done. Most of the
testing between networks has been single vendor equipment.
Measurement Update:
Jeff gave an update of what they've been working on, and what their priorities
are. They've released some software recently. The perfSONAR-PS Lookup Service
has been deployed at a number of locations. BWCTL and OWAMP saw updated
releases recently. perfSONAR-BUOY had an release for the MDM appliance, but
they're working on making some nicer packaging for a wider release. In general,
the future plan is to increase the usability, performance and stability of the
current tools.
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