Wednesday, December 19, 2012

Subnets

 Ip Subnetting is an extremely critical subjet for any IP network engineer to understand. But often times
it is difficult to grasp. Individuals often need time and practice to grasp the concepts. Students often struggle with the because it wasn't explained to them in a clear way.
 Ip Address is assigning  an address (Unique Identifier) to a single device on an IP network. This address
is a 32 bit number which is often too large for the need. This is when the network can be broken down.
 Ip Address are broken into Classes to keep this managable. You have Class A, B, and C. The difference
is the number of hosts that each network can have.
  Another concept is that there are Private and Public Internet addresses. The Private addresses are usually behind a firewall and router and that router typically preforms NAT (network Address Translation). NAT
is needed because private IP addresses are nonroutable across the public Internet.