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STILL BEING EDITED, NOT FINAL |
Meeting Minutes from 2012 Joint Techs in Stanford
July 16, 2012
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
Overview of the Wireless Broadband Measurement Projectsee slides
- sponsor is CPUC (California public utilities commission)
- part of ARRA grant, administered by NTIA
- 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 Are there any issues with server placement?
A: Used We 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
Design goals Simple Lookup Service Goals:
- meet needs of growing perfSONAR community
- Simple API
- Extend to non-perfSONAR services
- Security
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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 What is needed to do to move current installation?
store same stuffA: Stores the same data, different format
- How it works today:
- index servers pulls from lookup servers, create csv
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- and use csv for initial location finding
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- can modify script
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- to talk to both
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- (or convert index servers to
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- new)
- old approach is SOAP,
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- new approach is JSON
- GENI doing it the same way
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- new pushes to new
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- ; old ones pull old one
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- Have compatible API for GENI uses
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SFLOW Data Network Visibility and Control
Neil McKee, InMon Corporation
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- 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
sFlow now monitors more than just packets; there is also server instrumentation and it can be extended to applications
Why monitor everything with sFlow?
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 Is there any danger using OpenFlow features to use for accounting and control?
A: Much better Better to use wildcards when possible to instead of OpenFlow controls.
- open standards that work well
- netconf xmpl standards to set up / configurationconfigure
- forwarding OpenFlow controls make sense
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The The Challenge Ken
Mentions -
- I2 description of the proposed speed test tool
- Penn State PXE booting pS-Toolkit
Community Updates / Open Forum
any other updates
any other questions
how many people lookng at sflow
how planning/getting ready for big data challenges on networks
jim/ussc
use statseeker for all counter data
gobs of netflow
ericp: q about sflow
100G, how do that. single device how fast can go
running on brocade 100G today
turned on at SC, and it worked.
much easier for device to d sflow
sampling, decodding, aggregating, then flush out
sflow - sampling and send.
q: standard sampling rate, or all over the place
not faster than you need to
1/1000 and tweak
high level 1/40000 stillg et good data
security guys faster and faster
everyone else smooth and setady
6500s in core
10g across network
10g campuses
killing cpu when turned up more interfaces
so switched to brocade at borders, sflow
l2-7 info. before l3 only.
see more what's going on
initiative to look at core
sflow enabled dev on core, go to 100G.
can scale easily. afraid of what netflow would do if couldn't handle
10G inks
turn netflow reshalls and some things
put switch inline to do sflow to make work :)
XMRs at boarder
XLMs in core
juniper allu
sup720s out of gas
yes. prototype some new cards too, more power but still a lot of cpu
sec group, has mirrored port off of border routers
use bro cluster
get every packet off router
Ken reminded the group of the challenge regarding needs for next-generation tools:
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Pennsylvania State University WAN Metrics Project
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Next meeting of Performance Working Group
Internet2 Fall Member Meeting
Thursday, Oct 4, 7:30am - 8:30am
http://events.internet2.edu/2012/fall-mm/agenda.cfm?go=session&id=10002569&event=1149use sampling to trigger for security too now