Networking World

Move from or Compare IPv4 to IPv6

Address

IPv4

* 32 bit long(4bytes)
* Address= Network+Host
* Network and Host portion depends on classes
* Classes for identification depends upon the initial bits
* Total no of IPv4 addresses are 4,294,967
* Represented by dotted decimal or binary (192.168.100.1)

IPv6

* 128 bit long(16bytes)
* Basic architecture = (64 bits) network + (64 bits) host .
* Host Portion often be the MAC address or interface identifier
* Classes for identification depends upon the initial bits
* Total no of IPv6 addresses are 340,282,366,920,938,463,463,374,607,431,770,000,000
* Represented by8 groups of 4 hexadecimal characters separated by ":"