IP Tutorial: Subnet Mask and Subnetting

Understanding subnet mask, a fundamental component of IP Since the ‘1’ bits need to be contiguous, the octets of the subnet mask can only have the following values: 128, 192, 224, 240, 248, 252, 254, 255.As shown in the table, the shortest subnet mask has a length of /8 (corresponding to 255.0.0.0) while the longest has a length of /32 (corresponding to 255.255.255.255). Subnetting in 3rd octet of Class C priv - Cisco Community 192.168.0.0/20 - subnet mask = 255.255.240.0 which means that this address covers 16 class C addresses ie. 192.168.0.0/24 - > 192.168.15.0/24 . so it is not a subnet address because that is when you take a classful network and use more of the host part for the network part but it … Host and Subnet Quantities Aug 10, 2005 [SOLVED] how to find subnet mask of public ip address

Feb 21, 2005

Subnetwork - Wikipedia

Subnet Mask Cheat Sheet - aelius.com

Aug 16, 2003 · [Understanding a subnet mask] Now that you understand what binary is, let's have a look at our two subnet masks from the beginning of my post: 192.168.1.0 / 255.255.255.0 192.168.1.0/24 The concept of a subnet mask is simple. You have a network and you have hosts on the network (anything with an IP address is a host). For IPv4, networks can also be characterized using a subnet mask, which are sometimes expressed in dot-decimal notation, as shown in the "Subnet" field in the calculator. All hosts on a subnetwork have the same network prefix, unlike the host identifier which is a unique local identification.