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Title
Diagnosing network connectivity and speeds between two servers -
Description
To diagnose the network speed between two systems, you can use some easily obtainable public domain software, ttcp on Linux, and iperf on Windows. Neither need to be installed, and can run as-is. The test is over a very short period of time, so it is not indicative of normal operations, but can give a theoretical best speed, and identify sites where the network is not sufficient for the tasks the customer wishes to perform.
Linux - Linux
- Download ttcp and place file ttcp onto the two systems. A websearch can find many locations to download this public domain software.
- On the first system, run ttcp -r
- From the second system, run ttcp - t[first system]
For example:
# ttcp -t [192.168.1.1]
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port 5001 tcp -> 192.168.1.1
ttcp-t: socket
ttcp-t: nodelay
ttcp-t: connect
ttcp-t: 16777216 bytes in 0.41 real seconds = 39825.28 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 0.21, calls/sec = 4978.16
ttcp-t: 0.0user 0.2sys 0:00real 64% 0i=0d 0maxrss 0+3pf 66+5csw
The speed is 38.9MB/secWindows - Windows:
iPerf3 is a tool for active measurements of the maximum achievable bandwidth on IP networks.
Installing iperf in windows is also quite easy. Lets see how.You can download iperf for windows from Iperf For windows. Now unzip this zip file to a folder named "iperf" and run the iperf.exe inside that directory.For example i have extracted, the iperf zip in C:\iperf directory, so will open the Windows CMD, and navigate to that directory, to run the iperf.exe command.C:\>cd C:\iperfC:\iperf>iperf.exe
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