On my Windows 7 Platform - List item Type at the Windows 7 search bar Network and Sharing Center. Select - Network and Sharing Center Change Adapter Settings Right Click ( The LAN Lannetwrk Adapter) select Status it will show you the speed you have negotiated with the next network device up stream.

How can I test the speed of a LAN? I hope there is something baked into Windows to do this, because I am unable to install any third-party products.

To troubleshoot a network problem I would like to inquire the real network "speed" for a given network adapter, which can be seen when opening the "status" of a network connection under Windows: Ho...

The performance counters in windows can show you transfer-speeds, current disk queue etc in order to trace the actual bottleneck on the machine when your app is running. Look at Performance Object: Physical Disk And look especially at the queue-counters. A disk can be very fast ad sequential reads, but as soon as it tries to access the disk simultaneously the queue might peak and give you ...

Is there any way to measure precisely bandwidth between two computers in a LAN?

We've performed numerous test and it boiled down to the Operating System. If we go from Ubuntu 11.04 to Ubuntu 11.04 (same with CentOS for Linux machines), the speed throughput is ~938-941 MBits/s constant. If we go from Windows 7 x64 SP1 Ultimate to Ubuntu 11.04, it varies from ~440-475 MBits/s.

The only way to test the entire home network without expensive software or hardware is to take your laptop and plug it directly into each router, hub, and switch, and run a speed test through each one. The bandwidth you get on the speed test also depends on how much of the Internet in your home is currently in use.

I ran my Internet connection through SpeedTest.net which claims that it finds out the actual Internet speed, much lower than that promised by my ISP. But—while downloading—the speed is much lesser than the test results. Even after using download mangers like Internet Download Manager, there isn’t much difference.

Please add the OS and router model you have. BTW, you can connect the laptop both wired and wireless (eventually with a virtual network device), and test the transfer data speed between the two connections (The bottleneck is the wireless connection).

I have a doubt about my slow internet speed with third party firewall that I am using currently. Is it true that firewall can limit the internet speed ?