Testing Connections with Ping
Ping is one of the first tools to use to check computer, router and Internet connectivity. It's run at a command prompt, but getting the basic information is quite easy. You can do the whole thing in 30 seconds.
1. To run ping, type Start > Run.
2. Type cmd in the Run window, and click OK. A black and white command line window pops up.
3. Type ping followed by an IP address or a DNS address.
4. Press Enter to execute the command. Three useful examples:
1. ping 127.0.0.1 (This is a "loopback ping" — your computer trying to talk to itself. This tests whether your computer is able to handle Ethernet traffic. If this has a negative result, the computer has an operating system problem.)
2. ping 192.168.1.1 (If the result is "Request timed out", type ping 192.168.0.1. If that also times out, then the computer is not making a connection to your router.)
3. ping
www.netgear.com. (Tests whether your computer can contact Internet computers.)
When there is no problem, the ping results look as shown in the following screenshot. Three items of interest in the results are highlighted with arrows.
The first arrow shows the computer being contacted is replying. (The DNS address "www.netgear.com" is converted by ping into the equivalent IP address, 10.1.1.86.) This shows both that your network is connnected to the Internet, and that that computer on the Internet is running normally.
www.netgear.com is always running, so this is a good test address to use.
The second arrow shows that Ethernet packets have "0% loss". This is the best possible result. It means that the network connection is lightly loaded, and that it has not been necessary to transmit any of the same information twice.
The third arrow shows the average time it took to answer. "Average = 0ms" is the best possible result. Probably you'll only get responses this quickly from computers on your own network.