Computer Networking
Microsoft Windows
Local Area Network

What is a Subnet mask?


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2006-08-24 22:50:17
2006-08-24 22:50:17

The word subnetwork (usually shortened to subnet) has two related meanings. In the older and more general meaning, it meant one physical network of an internetwork. In the internet Protocol (IP), a subnetwork is a division of a classful network. The rest of this article is about the second meaning. Subnetting an IP network allows a single large network to be broken down into what appear (logically) to be several smaller ones. It was originally introduced before the introduction of classful network numbers in IPv4, to allow a single site to have a number of local area networks. Even after the introduction of classful network numbers, subnetting continued to be useful, as it reduced the number of entries in the Internet-wide routing table (by hiding information about all the individual subnets inside a site). As a side benefit, it also resulted in reduced network overhead, by dividing the parts which receive IP broadcasts.


Related Questions

It does not require a subnet mask.

You would also have to know the subnet mask.You would also have to know the subnet mask.You would also have to know the subnet mask.You would also have to know the subnet mask.

If this is a default subnet mask, then it would be a class C subnet mask. If you are subnetting a network and this is not the default subnet mask, then it could be either a class A or class B.

The default subnet mask would be

The default subnet mask has a standard size. The custom subnet mask allows you to make subnets that are smaller or larger than the default.

The default subnet mask is

Default Subnet mask:

It is called a subnet mask. A subnet mask is used for dividing IP addresses into host and network addresses.

A default subnet mask gives you classful addressing on octet boundaries. A non-default subnet mask implies that you are subnetting a larger network into several smaller ones.

subnet mask defines how many network bits our network address is using. In default condition subnet mask of the given ip address is subnet mask may change if we do subnetting.

The default subnet mask for176.43.52.18 is 176.43.

The default subnet mask would be for a class B address.

if the ip address is then the subnet mask should be

default subnet mask for class a ip address

The default subnet mask for a class C IP address is

The correct term is subnet mask instead of subnet mass. A subnet mask separates an IP address into the host address and the network address. It is a 32-bit number that can mask an IP address.

By changing subnet mask..from to Number of subnetworks increase and the number of host in each subnetwork decreases

Subnet Mask provides Network & Class Identificationfor an IP Address.

For a class A address the default subnet mask is default subnet mask of a class A network is

It depends on whether you are subnetting or not. If not, the default subnet mask would be

Classful subnet mask consists of octets of all 1 OR all 0 EX. 11111111.11111111.11111111.11111111 Classless subnet mask consists of octets od 1 AND 0 EX. 11111111.11111111.11110000.00000000

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