Best software to test the speed of LAN?

In the environment, that we are being run/tested, I am trying to determine the best option to test the speed of the LAN from one host to another.

For example...

I have a TestCluster with 2 hosts. In each host, I have 2 VM. Currently in each host, I also have 2 NETWORK interface card (1 GB speed).

I want to test the network speed in two areas.

1. from VM in VM in the same HOST.

2. from HOST to HOST with 1 VM since 1 HOST sending data to the other virtual within another HOST computer.

I did the software searches such as Iperf and Jperf, where exactly what I need... but it seems that send data to the high too for 500 MB or more... This is not good enough to saturate a 10 GB 1 GB, 2 GB, for testing network.

So my question is... What kind of software of network test that VM Guru allows you to test your network traffic?

Any help is really appreciated.

-Erich

Iperf is fine. Make sure that you just do not run with the default settings because it establishes that a TCP connection, not really representative to test the total flow of your link.

Use the switch Pei to establish multiple simultaneous connections and/or to increase the TCP window size with - w. This should boost your results significantly, unless you really have a network problem.

I personally tested on Linux virtual machines with vmxnet3 iperf and achieved results of more 25Gbit/s (Yes, really) within a 3-4Gbit/s on Windows virtual machines within the same host and host.

Between physical hosts, I get a few good 900 + Mbps on our 1Gbit network.

Tags: VMware

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