![]() Your ‘Subnet Mask’ determines what range of addresses in your subnet your computer can see and communicate with. Lets look at an IP address and break it down –Īn IP V4 address consists of a group of 4 sets of numbers separated by a ‘dot’ or period. When you connect to a LAN (Local Area Network), the router will assign your computer an IP Address, Subnet Mask, Gateway, and DNS Server(s) If you do – it’s wrong.Įach ‘set’ of numbers is called an ‘Octet’ (from the Latin and Greek ‘octo’ meaning ‘eight’ – each number is an 8-bit value) example = 192.168.1.100Įach number is limited to an integer between 1 and 255 – you’ll never see an address that contains a number larger than 255. IP Address = the unique address of your computer on the LAN. Subnet Mask = Determines what segments of your Network ID your computer can communicate with. Your router is the ‘Gateway’ to another network. (The Internet is another network = WAN (Wide Area Network)ĭNS (Domain Name Service) Server = This is the engine that translates a DNS name into an IP Address. When you type in the DNS server translates that name to an IP Address = 74.125.30.103 (Computers use IP Addresses, not names.) The DNS Server looks at constantly updated tables to convert the name to the actual IP address so you can connect. Your router usually performs NAT and DNS for you as well as other functions such as DHCP and IP Masquerading. If you plug into a LAN and you get no IP Address or Gateway, etc. ![]() (bad cable, defective port, or other hardware issue)Ģ. A DHCP server automatically assigns an IP Address, Gateway, etc. ![]() So, What Does it Mean to be “On the Same Subnet”? to a device that gets connected to the LAN and is responsible for keeping all addresses it assigns unique between devices. The DHCP server is usually your router. Let’s say your computer has a LAN address of 192.168.1.100. Your computer has a standard Subnet Mask of 255.255.255.0. You could not connect to a computer or device with an address With that Subnet Mask, your computer can only see a device where the first three Octets match exactly. Of 192.168.0.xxx because the third Octet is different. If you do not know how to get to this dialog, see the "Set a Static IP Address in Windows 7, 8, or 10" section at. Remember to change it back to what it was (probably automatically-assigned (DHCP)) when you're done, else you will no longer be able to connect to the internet.Īssuming you're using Windows, the configuration would look something like: This should, in theory, tell the PC to attempt to communicate with any IP address from 10.0.0.1 to 10.255.255.254 via the local network. Again, pick a random IP address from the range to assign to the PC. If you do not know the specific subnet, you should also be able to use the entire 10.0.0.0/8 space, with a subnet mask of 255.0.0.0. the randomly-chosen 10.x.x.4) and configure the subnet mask. 10.x.x.y would be considered the 10.x.x.0/24 network, subnet mask of 255.255.255.0) you just need to put the PC on any address on the network (e.g. If you know the specific subnet the camera is on (usually the last octet on a home network, e.g. You'll want to put it in the same subnet as the camera, with the same subnet mask - this puts them on the same network so the PC will not try to send packets through its default gateway as it would do for non-LAN destinations. Once you have them connected in this fashion, the easiest way to proceed is to set up a static IP address on the PC. A direct connection might also work, but this depends on Auto MDI-X support - a switch is usually easier. Wireless connections are usually bridged to the LAN-side ports and act as an extension to that switch. ![]() The LAN-side ports on the 'router' usually serve as a switch. First, you need to connect it to the same network switch as the PC.
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