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OMAR
50 pts.
 Testing network performace
Network testing
What is the best way or tool to test network, to see if it is running at optimal speed etc. Thanks.
ASKED: Feb 1, 2008  3:54 AM GMT
UPDATED: August 17, 2009  1:43:32 PM GMT
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JennyMack
4,265 pts.
Answer Wiki:
In most cases you can use utils like hping/iperf to test just the throughput potential of your network. This can bypass typical tcp/udp restrictions you'd face with real applications.

iperf consists of a "server" daemon and a client. you can use that to see what the potential for transfer is betweeen two hosts.

Network performance testing can get complex. If you mean the application/protocol performance through some network. (eg. windows file copy - cifs/smb over an LAN ethernet), then you';ll need to give us some more info. Like what is the physical/logical layout of your network. (ethernet/infiniband/wan/wireless/etc...)
Last Wiki Answer Submitted:  Aug 17, 2009  1:43 PM (GMT)  by  JennyMack   4,265 pts.
Latest Answer Wiki Contributors:  Venkat20   45 pts., Xanader   395 pts.
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qcheck is a free simple client/server program that can measure the speed of your links.
http://www.ixiacom.com/products/performance_applications/pa_display.php?skey=qcheck

for internet speed testing you can use Speakeasy’s speedtest
http://www.speakeasy.net/speedtest/

Tbitner
 495 pts.
 

Speak Easy is the most accurate for interenet speed testing.

LAN Testing is tricky since the interfaces are getting larger. However PRTG (Traffic Grapher) is a free tool for up to 3 sensors / interfaces. Worth the money for 30 interfaces for $99.00 if network adminstrator, since it will generate reports, and email notifications if interfaces goes down. Will look like a hero with low cost montior solution that runs on any windows machine, as long as devices support SNMP.

DPOC
 25 pts.