Difference between IPv4 and IPv6

what is a IPv4

• Developed by DARPA ( Defence Advanced Research Projects Agency ) in 1981.
• Manage and distribute by IANA ( Internet Assigned Number Authority ).
• Represented into dotted decimal number.
  • It has 32 bits divided into 4 groups each having 8 bits.
• It supports unicasting, multicasting and broadcasting transmission way.
• It is divide into 5 classes.
  • class A
  • Class B
  • Class C
  • Class D
  • Class E

Few important concepts before understanding these classes:

1. Network Bits – This value defines different series of IP address.
2. Host Bits – This value defines number of hosts in a network series.
3. Network IP address – The very first IP address of a network series which defines the a
   network.
4. Broadcast IP address – The very last IP address of a network series which is use for
   broadcasting in the network
5. Subnet-mask – This value defines the range of IP address in a network and defines
   different networks.

What is a IPv6

• IPv6 was introduced in Dec, 1998.
• Developed by IETF (Internet Engineering Task Force).
• It was developed due to exhaustion of IPv4 address.
• Launched in 6 June, 2012
• It has 128 bits divided into 8 groups each having 16 bits.
• Represented into Hexadecimal Number System.
• Each group is separated by colon(:)
• These addresses supports Unicasting , Multicasting and anycasting.
• There is no any class like IPv4.
• By default its first 64 bits represents Network Bits and last 64 bits represents host bits.
• The address that start with FF0 is know as multicast IPv6 address:
  • FF05 – OSPFv3
  • FF06 – OSPFv3
  • FF09 – RIPng
  • FF0A – EIGRP

To know more about iOS please check Wikipedia link click here

To know more about iOS please check Wikipedia link click here