How do I know the ip address of the subnet?
Ok. Lets look at a couple of examples. The network mask (or netmask) identifies the number of octets that are associated with the network address. So lets assume your netmask was 255.255.255.0; the first three octets (numbers between dots) are the network address. if your system’s IP is 192.168.1.23, then your subnet address value should be 192.168.1.0. If your network address is 192.168.0.23, then your subnet address is 192.168.0.0.
If you don’t know the IP addresses used by any of your systems, you must use a procedure to get this for one of your systems and then derive the subnet address. Otherwise, we could be guessing all day. If someone else configured your network, they could have used addresses that begin with 10.x.x.x or 172.16.x.x, which are valid for privates networks just as 192.168.x.x. So, since you are using Windows, we need to consider how there are several ways to get this info under all versions of Windows. I’m only going to mention two methods. The quickest for me is using the ipconfig command in the Windows command shell (accessed within the Accessory folder of your Start menu path; I have it pinned to my task bar on my Windows 7 systems).
If you don’t want to use the command shell, then you can do the following to click your way to the value:
1. Go to Start > Control Panel > Network and Internet > Network and Sharing Center, and clicking on “Change adapter settings” at the top left.
2. Double-click on your “Wireless Network Connection” or “Local Area Connection,” depending on which you are using.
3. On the Connection window that pops up, click on the “Details” button. Look for the IPv4 Addr
Once you get the IP address, you could then consider what I have in the examples at the top of this message. Also, as mentioned by -_Milo_-, the ping command can be a simple but valuable tool for testing connectivity between your systems. ping and then the IP address of a target system (i.e.ping 192.168.1.2). If there is a problem with your systems talking with each other, the network rendering will definitely not work.
I hope this helps! :-)
I added attachments acquired from a Windows 7 system.