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April 23, 2012
http://ev= ents.internet2.edu/2012/spring-mm/agenda.cfm?go=3Dsession&id=3D10002344= &event=3D1036
=E2=80=A2 Welcome -- Ken Miller, PSU (Working Group Co-Chair)
=E2=80=A2 Internet2 Update -- Jeff Boote
=E2=80=A2 Performance Portal Preview (design, privacy considerations, et=
c.) - Jeff Boote and Aaron Brown, Internet2
see slides at: http://www.internet2.edu/presentations/spring12/20120423-boote-perfpor=
tal.ppt
=E2=80=A2 Using mock data cur=
rently
=E2=80=A2 Call for participatio=
n to discuss operation and data privacy
=E2=80=A2 WAN Metrics Project at PSU (including financial angles of netw=
ork measurement) =E2=80=93 Ken Miller
see slides at=
: http://www.internet2.edu/pre=
sentations/spring12/20120423-miller-psu-wan-metrics.pdf
=E2=80=A2 Software Defined Networking / Open Flow - Group Inquiry<=
br>
=E2=80=A2 How do we measure ope=
nflow and the controllers?
=E2=80=A2 A few people are runn=
ing OpenFlow in test
=E2=80=A2 Question from NYU abo=
ut measuring openflow on layer 2 and layer 3.
=E2=80=A2 Stanford wrote some s=
oftware that will provide some measurements.
=E2=80=A2 Reminder of The Challenge - Ken Miller
=E2=80=A2 What does=
this community need?
=E2=80=A2 What do t=
he next generation of NOC tools and/or Advanced User tools look like?
Community Updates / Open Forum
What kinds of network measurement software are people using?
A few people noted that they were using either Cacti, Arbor or InMon. An= individual from a major university noted that they were using =E2=80= =9CProquesys Flowtraq=E2=80=9D http://www.flowtraq.com/corporate/ . This is= a flow monitoring solution that keeps 100% of the data, without doing any = aggregating. They use three flash drives in a RAID configuration to store t= he data, otherwise it'd take hours to track a single flow. Ken noted that t= he aggregating was why they'd gotten away from RRD.
Has anyone had looked into monitoring at high resolution?
Most of the current tools do 5 minute or 1 minute averages, and there is= some interesting sub-second microburst activity when doing 1 second pollin= g. The problem is that sampling that fast tends to overload the router, tho= ugh Cisco is being pressured to support that use-case.
IU is doing 10 second polling, and that for some routers, it works well.= For others, the counters might not update that fast. He noted that sometim= es when router software gets updated, it will break the 10 second polling.<= /p>
Since high speed polling is inaccurate, folks were asked if anyone was u= sing passive taps, or similar to do monitoring. One person noted that they = were doing port mirroring, and were passing the mirrored packets to a comme= rcial packet analyzer. Another noted that he'd killed a 6509 using port mir= roring.
A number of folks were using software to obtain NetFlow/sFlow measuremen= ts. An administrator at a major university commented that he was doing lots= with flow data, because they were completely a Brocade shop. Ken noted tha= t at PSU, they used Brocade at the border that feeds sFlow to their InMon i= nstance, but that the security group gets mirrored ports.
California is starting to measure mobile wireless broadband out of the c= oncern that the data provided by the carriers doesn't match the experience = of the end users. There were three areas of concern that she brought up: ed= ucation communities in remote areas, football stadiums, and 'dead zones' in= the middle of urban areas. The hope is that if they can show the carriers = how bad some of these areas are, they could push the carriers to fix them.&= nbsp; Ken noted that at PSU, they're peering with AT+T, and measuring AT+T'= s performance from their side.
Multicast tools: some are using multicast beacon and some are using dbea=
con. NYU mentioned IPv6 Beacons.