Definition: A subnet is a logical grouping of connected network devices. Nodes on a subnet tend to be located in close physical proximity to each other on a LAN.
The pourpose of subnetting is not to provide extra addresses, but to keep network data separated to prevent congestion.
Sub netting is the process of dividing a large network is to smaller network. Every sub net has its own address. Each sub net is identified by its sub net address.
Summary: A subnet mask is a way of telling your computer or router what network addresses it can consider local and which are remote.mcsgul@yahoo.com
As we are using a class B network for the Subnetting and we have to make a total of at least 130 subnetworks...so, class B default subnet mask is 255.255.0.0 or 16 bits for networkingand we have to make 130 sunets. so it will come under the block size of 256 or we need 8 bits more to make 130 subnets.so our answer is 16+8=24ie, we will use subnet mask of 255.255.255.0 for this class B address.
In computer networking Math and binary operation are used in calculating subnet masks or in subnetting or in supernetting etc.
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.
for a good purpose
segmentation
Devices interpret subnetting information on a LAN by determining where the traffic originated and routing it to the appropriate area. By creating subnets, it is possible to have segregated areas of a network.
There is no need to use subnetting if you have no wish to further divide up your network into smaller, logical networks.
Loose of ip address
Yes. Subnetting separates a network into multiple logically defined segments, or subnets.
one number of host bits must be left when you doing subnetting.
12
Summary: A subnet mask is a way of telling your computer or router what network addresses it can consider local and which are remote.mcsgul@yahoo.com
Subnetting is the practice of dividing a network into two or more networks.
172.16.1.0 24
126
Subnetting allows you to create multiple local networks within a network. For more details use this site: http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00800a67f5.shtml