[c-nsp] Testing bandwidth

[Ed Butler]

I would say FTP is going to be pretty unreliable as a test method on
high throughput links, because of the TCP receive window. It will be
fine for testing E1s etc though :)

See:
http://www.babinszki.com/Networking/Max-Ethernet-and-TCP-Throughput.html

We frequently get people saying "I can only download at 30mbits on my
gig port server", and they're using a West coast USA server to test
download from their UK server with TCP. 

Regards,

Ed Butler
RapidSwitch Ltd
DDI: 020 7106 0731

RapidSwitch Ltd, 5th Floor, Sovereign House, 227 Marsh Wall, London, E14
9SD

This email message is intended only for the addressee(s) and contains
information that may be confidential and/or copyright.  If you are not
the intended recipient please notify the sender by reply email and
immediately delete this email. Use, disclosure or reproduction of this
email by anyone other than the intended recipient(s) is strictly
prohibited. No representation is made that this email or any attachments
are free of viruses. Virus scanning is recommended and is the
responsibility of the recipient. 
-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Aamir Amin
Sent: 15 November 2006 12:46
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] Testing bandwidth

Hey guys,

 

Is there any accurate way of measuring the speed of a link, we are using
iperf at the moment but that doesn't seem to be reliable,

We are also giving customers out ftp server to upload to so that they
can test there bandwidth capacity. Do you guys have any more reliable
ways of testing the speed on a link?

 

 

Aamir Amin

Level-3 Engineer

AboveNet Communications (UK) Ltd

East India Dock House

240 east India Dock Road

Docklands

London E14 9YY

Mob:+44 (0)779 546 2816

www.above.net

 

_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/