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What is a Subnet mask?

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โˆ™ 2006-08-24 22:50:17

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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.

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โˆ™ 2006-08-24 22:50:17
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Related questions

Does ipv6 require a subnet mask?

It does not require a subnet mask.


Subnet mask of 172.16.0.0?

The default subnet mask would be 255.255.0.0


What class has subnet mask 225.225.225.0?

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.


Defference bw a default subnet mask and a custom subnet mask?

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.


What is the default subnet mask for the 198.25.4.129 address?

default subnet mask for 198.25.4.129


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Default Subnet mask: 255.255.0.0


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The default subnet mask is 255.255.0.0


How can you change from a subnet mask of 255.255.224.0 to a subnet mask of 255.255.240.0?

2 given subnets


What is Subnet mass?

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


What is the difference between a default subnet mask and a custom subnet mask?

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.


What is the default subnet mask for the IP address 176.43.52.18?

The default subnet mask for176.43.52.18 is 176.43.


What is the subnet mask for 176.42.53.18?

The default subnet mask would be 255.255.0.0 for a class B address.

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