what is the purpose of subneting ip network with non standard subnet masks .how is it done?

Answer 1

To get more addresses out of a subnet. This is a very in depth subject though so you should look it up online or get a book on it. No one is going to explain it very well on Yahoo Answers.

Answer 2

Do an bitwise and operation on the ip handle and the subnet. the consequence is the default gateway that often is the community router. The extra different answer is the IP handle selection is constrained by ability of the subnet mask. the 1st and final ip addresses are specific and seek advice from the default gateway and the broadcast addresses, repspectively. The style of nodes that the community can help relies upon on how addresses it provides you. you're advised interior the question how lots of the ip handle represents community and how many symbolize hosts so it is going to be trivial to calculate the utmost style of unique hosts which would be represented.

Answer 3

Well subnetting is mainly done to allocate and managing network resources well and to cut down network traffic in certain ways. When you subnet a given I.P address you split it into further networks, each acting as a seperate network in itself. For ex, a class B network contains about 255*255 addresses. You might be using such a range to address network resources like printers, computers, etc in a business organisation. However, this would lead to a lot of confusion. So, you can divide the available addresses into subnets. If you have say 60 departments in your organisation each needing some 500 addresses. Then using subnetting you divide the available approx. 65000 addresses into 60 different subnets having about approx. 1000 addresses in them. Some of the addresses would be rendered useless by subnetting and hence I am just giving an approx. figure. The actual figures can be arrived by doing some math. Well to know how to subnet based on the number of I.P's required its better to chk for some online stuff on subnetting or a good networking book like Networking Principles by Tanenbaum. It will be given in detail.
Subnetting reduces the network traffic because each of the subnets becomes a local network in itself. If in a class B network a computer sends a broadcast like a ping packet, it would travel to the rest of the 65000 computers. However, in a subnetted environment the packet would be confined to the local network only. To communicate between two subnets a router is needed, which does not allow broadcasts to be transmitted. So the network traffic is less. Similarly, other issues like firewalling, managing resources would be easy using subnets.

Answer 4

subnetting is basically just splitting an existing network into small, more manageable networks for performance or security or ip management. The ip settings for a pc or node on a particular segement of the network is made up of ip, subnet mask, and gateway. just change the subnet mask on each node to add a different subnet mask , (for e.g. in the tcp/ip settings of th nic card)

The subject of subnetting is an extremely broad subject, try and be more specific if this is related to a problem you are addressing.