For RFC2444, please read RFC2544, and forgive the spam.
*Roy Hirst* | 425-556-5773 | 425-324-0941 cell
XKL LLC | 12020 113th Ave NE, Suite 100 | Kirkland, WA 98034 | USA
On 12/8/2014 8:29 AM, Roy Hirst wrote:
Can't help with faster adapters, but I believe there are some
underlying architectural issues here as to why the speeds are hard to
achieve, and why some people can and others maybe can't achieve them.
For Carrier Ethernet, I believe most of these are covered in RFC2444
and the related RFC6815. Even with bit speeds up to spec, traffic
speeds are impacted non-linearly by customer protocols including the
usual suspect, TCP. This is documented in ITU-T Y.1564, clearly enough
for simple folk like me. A good example for your corkboard is slide
(page) 28 of the excellent
20140409-Tierney-100G-experience-Internet2-Summit.pdf, included as
part of a report on 100GE performance test methodologies. Which is how
I stumbled across it.
Roy
*Roy Hirst* | 425-556-5773 | 425-324-0941 cell
XKL LLC | 12020 113th Ave NE, Suite 100 | Kirkland, WA 98034 | USA
On 12/7/2014 8:48 AM, Teleric Team wrote:
From: p...@fiberphone.co.nz
Subject: Re: 10Gb iPerf kit?
Date: Sun, 7 Dec 2014 09:24:41 +1300
To: nanog@nanog.org
On 11/11/2014, at 1:35 PM, Randy Carpenter <rcar...@network1.net>
wrote:
I have not tried doing that myself, but the only thing that would
even be possible that I know of is thunderbolt.
A new MacBook Pro and one of these maybe:
http://www.sonnettech.com/product/echoexpresssel_10gbeadapter.html
Or one of these ones for dual-10Gbit links (one for out of band
management or internet?):
http://www.sonnettech.com/product/twin10g.html
I haven't tried one myself, but they're relatively cheap (for 10gig)
so not that much outlay to grab one and try it (esp if you already
have an Apple laptop you can test with).
How would you use it? with iperf still?I don't think you will go
nearly close to 14.8Mpps per port this way.Unless you are talking
about bandwidth testing with full sized packet frames and low pps rate.
I personally tested a 1Gbit/s port over a MBP retina 15 thunderbot
gbe with BCM5701 chipset. I had only 220kpps on a single TX
flow.Later I tried another adapter with a marvel yukon mini port. Had
better pps rate, but nothing beyond 260kpps.
I've done loads of 1Gbit testing using the entry-level MacBook Air
and a Thunderbolt Gigabit Ethernet adapter though, and I disagree
with Saku's statement of 'You cannot use UDPSocket like iperf does,
it just does not work, you are lucky if you reliably test 1Gbps'. I
find iperf testing at 1Gbit on Mac Air with Thunderbolt Eth
extremely reliable (always 950+mbit/sec TCP on a good network, and
easy to push right to the 1gbit limit with UDP.
Again, with 64byte packet size? Or are you talking MTU?
With MTU size you can try whatever you want and it will seem to be
reliable. A wget/ftp download of a 1GB file will provide similar
results, but I dont think this is useful anyway since it won't test
anything close to rfc2544 or at least an ordinary internet traffic
profile with a mix of 600bytes pkg size combined with a lower rate of
smaller packets (icmp/udp, ping/dns/ntp/voice/video).
I am also interested in a cheap and reliable method to test 10GbE
connections. So far I haven't found something I trust.
Pete
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