Azher, Thanks for the link. I don't currently have a Linux box I can stick on the network, but I'm trying to get one built. I'm also working with somebody in Seattle for file transfer testing. Thanks, Rick On Wed, March 25, 2009 12:10, Azher Mughal wrote:

You can try:

http://www.measurementlab.net/measurement-lab-tools#ndt

-Azher

Rick Ernst wrote:

...

Resent from my subscribed address. Hopefully this isn't a dupe to anybody. ---------------------------------------

I'm working on turning up our first GigE connection (400mbs CIR) and the various online speedtests I'm aware of choke after about 100Mbs or so.

Does anybody know of testing sites that can handle higher bandwidth, or have an ftp host or similar to test against?

I'm connected to Level3, backhauled to Seattle, WA.

Thanks, Rick

Azher,

Thanks for the link. I don't currently have a Linux box I can stick on the network, but I'm trying to get one built.

All you need on the client side is a browser with Java support (and in your case, a gigabit NIC). Ahzer mentioned using Vista/Firefox in his reply, I've used both Mac/Firefox and FreeBSD/Firefox. Stephen

The attachment circuits physical media was single mode dark fiber mid-span meet. After some tinkering with colo center jumpers, the physical attachment circuits were rock solid. The issue was the internal IP network of the ISP (or lack of same). You get what you pay for. (At most. Quite often, you get less.) Frank Bulk wrote:

If you're turning up a 10 GigE circuit, as a customer I would be asking for that circuit to be tested with some modern tools such as the JDSU T-BERD. For the price you're probably paying, it's probably not unreasonable to have it as part of the turn-up fee.

Frank

-----Original Message----- From: Robert M. Enger [mailto:enger@enger.us] Sent: Wednesday, March 25, 2009 10:23 PM To: ernst@easystreet.com Cc: nanog@nanog.org Subject: Re: Gigabit speed test anybody?

I turned-up a pair of 10GigE circuits a while back (with a different, unnamed carrier). They didn't perform too well. When I pushed them for assistance with testing, they revealed that they had multiple IPERF transponders scattered throughout their network. They were not open to the public, but could be made available for short periods of time (timer-based, requiring repeated re-authorization to use them for an extended period).

It seems likely that Level3 has similar (or superior) testing facilities. A call to some account executives may be required to open the kimono.

Separately, the Super computer centers used to have speed-test servers installed adjacent to their border routers. They were dedicated, tuned hosts specifically for speed testing. One/more of them might be willing to help you out. However, unless one of them happens to use Level3 for commercial transit, your performance will be gated by the excess intervening network(s) and under all circumstances, by the competing traffic on their access circuit.

Finally, I echo the sentiments about avoiding disk I/O. If you do use FTP download for testing, you may wish to write the local output to the null device. Some ftp clients allow the null device to be specified as the local output file when downloading files. On XP command-line FTP, the device "Nul:" is accepted. On Un*x it is /dev/null. The command-line client on Server 2003 et al does not seem to accept Nul as the local destination file when downloading. (anyone know the correct magic?) Remember to download multiple times; assuming the source server has enough ram, it will cache the file in memory during the first download and successive downloads in rapid succession should be essentially memory-to-memory (if you're using a null device on the receiving end)

Bob

Rick Ernst wrote:

...

Resent from my subscribed address. Hopefully this isn't a dupe to anybody. ---------------------------------------

I'm working on turning up our first GigE connection (400mbs CIR) and the various online speedtests I'm aware of choke after about 100Mbs or so.

Does anybody know of testing sites that can handle higher bandwidth, or have an ftp host or similar to test against?

I'm connected to Level3, backhauled to Seattle, WA.

Thanks, Rick

Ironically, two days later, I find myself in exactly the same position; needing an iperf box to test a 100Mb client connection against. In a perfect world, this box would hang off of NYIIX (or Arbinet) and be able to sustain 100Mb of throughput for the duration of a couple of generic iperf tests that I need to perform at a client site in a couple of hours. Thanks in advance... On 26-Mar-09, at 11:57 AM, Rick Ernst wrote:

Thanks to multiple private/public responses.

I was able to get an iperf test and also a close mirror for a DVD iso.

Time to put live traffic on it and see what happens.

On Wed, March 25, 2009 11:05, Rick Ernst wrote:

...

Resent from my subscribed address. Hopefully this isn't a dupe to anybody. ---------------------------------------

I'm working on turning up our first GigE connection (400mbs CIR) and the various online speedtests I'm aware of choke after about 100Mbs or so.

Does anybody know of testing sites that can handle higher bandwidth, or have an ftp host or similar to test against?

I'm connected to Level3, backhauled to Seattle, WA.

Thanks, Rick