When you use slash notation, you write the IP address, a forward slash (/), and the subnet mask number. Slash notation is a compact way to show or write an IPv4 subnet mask. You use slash notation differently for IPv4 and IPv6 addresses. Many things use slash notation, also known as CIDR ( Classless Inter-Domain Routing) notation, for many purposes, such as policy configuration. This is the explanation of the / in the IP. how can I do this with the /24 formatting given above? The IPs to catch have the first two blocks are always the same, and the final two blocks can be anything. I have a set of IP addresses I need the system to "catch"/recognise. Specifically, I don't understand the /24 on the IP address syntax I understand this is a "block" of 24 but considering that there seems to be many more than 24 possible IPs from - for example - 192.168.0.- then I don't get the importance of the /24 is this a maximum? Can /255 work, as that seems the actual number of possible values ? Does the /24 only apply to the "final" block or does it apply to any block with value of 0? My Specific Issue but I don't understand what that format implies nor what it is called.īecause the exampled format is an IP address, webs searching for this information is very muddy and hard to find anything useful. I am trying to use a system which asks for a set of IP addresses, and offers me the example format of 192.168.0.0/24 to enter sets of IP addresses. All IP's mentioned here are IPv4 General Concept Confusion
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