Used by the TCP/IP protocol to decide how the network is broken up into sub-networks.
used to divide an organization's network as necessary, creating additional destinations for routing purposes. Also called a subnet mask or address mask. Computers on the various subnets at a given site all appear to the rest of the Internet to be on a single network.
A netmask is a series of bits designed to 'mask' certain portions of an IP address. The standard netmask for a class C network like FlashNet is 255.255.255.0 - basically the last octet, .0, says 'look here for the machine number, the rest (255) is network number'. The primary use for netmasks is in subnetting .
a four-octet number that identifies either a supernetwork (supernet) or a subnetwork (subnet)
A subnet consists of a group of computers that all share a common IP address prefix.
A set of numbers which indicates the network class. When its binary representation is anded with an interface IP address, the result is the network address.
A bit-mask that identifies the network number and host number components of an IP address.
The netmask specifies all the IP addresses that belong to a particular network.
A netmask is a set of four number blocks separated by periods. Each number is normally represented as the decimal equivalent of an eight-bit binary number, which means that each number may take any value between 0 (all eight bits cleared) and 255 (all eight bits set). Every IP address consist of two parts (the network address and the host number). The netmask is used to determine the size of these two parts. The positions of the bits that are set in the netmask are considered to represent the space reserved for the network address, while the bits that are cleared are considered to represent the space set aside for the host number.
A number that explains which part of an IP address comprises the network address and which part is the host address on that network. It can be expressed in dotted-decimal notation or as a number appended to the IP address. For example, a 28-bit mask starting from the MSB can be shown as 255.255.255.192 or as /28 appended to the IP address.
A bit mask used to identify which bits in an IP address correspond to the network and subnet portions of the address. This mask is often referred to as the subnet mask because the network portion of the address can be determined by the encoding inherent in an IP address.
mask Sets the subnet mask.
A 32-bit bit mask which shows how an Internet address is to be divided into network, subnet, and host parts. The netmask has ones in the bit positions in the 32-bit address which are to be used for the network and subnet parts, and zeros for the host part. The mask should contain at least the standard network portion (as determined by the addressþs class), and the subnet field should be contiguous with the network portion.
(also known as subnet mask, or address mask) is a technique used by the IP protocol to determine which network segment packets are destined for. In essence, the subnet mask is a 32bit bitmask used to tell what portion of an IP address identifies the subnetwork, and what portion identifies the host. One of the most widely used netmasks for home/SOHO applications is 255.255.255.0, used for a Class C subnet, one with up to 255 host computers. NETSTAT
A netmask is a 32-bit mask used to divide an IP address into subnets and specify the networks available hosts. In a netmask two bits are always automatically assigned. For example in 255.255.225.0, "0" is the assigned network address and in 255.255.255.255, "255" is the assigned broadcast address.
Networking. A bit mask that specifies the local network portion of an IP address, allowing you to logically subdivide a network.