We help IT Professionals succeed at work.


Medium Priority
Last Modified: 2010-03-19
i want you to expline the meaning of subnetting and how to make it in good manner, please in easy way
thank you for your time
Watch Question

Top Expert 2004

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts

if you want to understand the basics of subnetting, you may want to check RFC950 here :


As regards to network classes, you can check RFC1918 here :


Then, if you have more specific questions, I'll be glad to help.

Sam PanwarSr. Server Administrator

A portion of a network that shares a common address component. On TCP/IP networks, subnets are defined as all devices whose IP addresses have the same prefix. For example, all devices with IP addresses that start with 100.100.100. would be part of the same subnet. Dividing a network into subnets is useful for both security and performance reasons. IP networks are divided using a subnet mask.

Full description:


subnet calculator

While using IP Addresses for Big Networks, We have to devide big networks into some smaller ones with the help of Subnet.
Maximum No of PC in a Network are increased using subnetting.

    * Address—The unique number ID assigned to one host or interface in a network.

    * Subnet—A portion of a network sharing a particular subnet address.

    * Subnet mask—A 32-bit combination used to describe which portion of an address refers
       to the subnet and which part refers to the host.

    * Interface—A network connection.

Detailed Subnet Info :-

  1. http://www.cisco.com/warp/public/701/3.html
  2. http://www.ralphb.net/IPSubnet/
  3. http://www.digipro.com/Papers/IP_Subnetting.shtml
  4. http://www.learntosubnet.com/
  5. http://www.jinx.com/forum/topic.asp?TOPIC_ID=40526
  6. http://www.cit.cornell.edu/computer/support/subsubnetting.html
  7. http://www.mcmcse.com/win2k/guides/subnettinghints.shtml
  8. http://www.subnetonline.com/subnet/step3.html
  9. http://www.subnetonline.com/
10. http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci213065,00.html
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.