Meeting Minutes from 2012 Joint Techs in Stanford

Welcome  from Ken Miller, Co-Chair of Performance Working Group

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Wireless Broadband Measurement in California
YoungJoon Byun, Cal State, Monterey Bay

see slides

• sponsor is CPUC (California public utilities commission)
• part of ARRA grant
• state-wide testing 2x/yr through 2014
• tool developed to measure wireless performance
• goal is to objectively evaluate major providers of mobile wireless across state of California
• currently analyzing results
• updating software for second field test in fall.
• all data available
• see http://calbroadbanddrivetest.blogspot.com/

Comments / Questions

Q: Any issues with server placement?

A:  Used EC2, with placement in east and west coast

• final results could be averaged
• when experience server congestion, in virtual environment, spin up another one.
• looking for more in second field trial.

Q: Are you doing anything to control who can access testers?
A: No protection today

Q:  Are you looking at any server data?
A:  No, just client data

• curious to see if you need to do east/west thing
• Could speed up by factor of 2 if only do one.

• Any suggestions, comments, please contact
  ybyun@csumb.edu

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ESnet - Simple Lookup Service (for perfSONAR and beyond)

Sowmya Balasubramanian, ESnet

see slides

Design goals:

• meet needs of growing perfSONAR community
• Simple API
• Extend to non-perfSONAR services
• Security

Design:

• REST/JSON API
• Backend: MongoDB
• Flexible Architecture

Q: Assume one query?
A: No, but want to make sure simple query < 1sec (heard "on average")

http://odev-vm-7.es.net/lookup-service-examples
  (dev vm right place)

new Lookup Service and older one are on same host

new Lookup Service ls is 95% faster than old one
1min-> under 1sec

ESnet is using the  new Lookup Service

watch for alpha http://ps4.es.net:8085/lookup/services

Q: what is needed to do to move current installation?

  store same stuff, different format

How it works today: index servers pulls from lookup servers, create csv
  and use csv for initial location finding.

right now, modify script
  can talk to both
  then don't need a flag day

(or convert index servers to something new)

old approach is SOAP, this is JSON
GENI doing it the same way
  new pushes to new
  old ones pull old one

 Have compatible API for GENI uses too

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SFLOW Data Network Visibility and Control

Neil McKee, InMon Corporation

See Slides

http://www.sflow.org/

http://blog.sflow.com/

• sFlow: widely supported industry standard
• based on virtual network and switches
• monitors all protocols
• captures packet path
• senders all open source & free
• replaces counter polling
• allows you to do lots of things

• IP address, URLs, app  attributes... things impossible to get all together, but needed for situational analysis

Why monitor everything?
1. troubleshooting - always have context
2. putting network and server teams on same page
   (cloud services)
3. full observability required for automated control
     control theory 101.
     to automate closed loop, have to report all

• sFlow and OpenFlow are complementary.
• OpenFlow can control
• if you have viz at same time, opportunity to close loop, research topic, but looks promising

Q: Danger with OpenFlow features to use for accounting and control?
A: Much better to use wildcards when possible to OpenFlow controls.

• open standards that work well
• netconf xmpl standards to set up / configuration
• forwarding OpenFlow controls make sense

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 The Challenge  

Ken reminded the group of the challenge regarding needs for next-generation tools:

https://spaces.at.internet2.edu/display/PerformanceWG/Challenge+of+January+2012+re+Needs+for+Next+Gen+NOC+and+End+User+tools

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Penn State WAN Metrics Project

see slides