Problem
Compare and contrast the IPv4 and IPv6 protocols.
Solution
IPv4 and IPv6 are the internet protocols applied at the network layer. IPv4 is the most widely used protocol right now and IPv6 is the next generation protocol for internet.Table Cell | Table Cell |
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IPv4 is the fourth version of Internet protocol which uses 32 bit addressing | IPv6 is a next generation internet protocol which uses 128 bits addressing. |
IPv4 allows 4,294,967,296 unique addresses | IPv6 can hold 340-undecillion (34, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000) unique IP addresses. |
IPv4 has different class types: A,B,C,D and E. Class A, Class B, and
Class C are the three classes of addresses used on IP networks in
common practice. Class D addresses are reserved for multicast. Class E
addresses are simply reserved, meaning they should not be used on IP
networks (used on a limited basis by some research organizations for
experimental purposes).
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IPv6 addresses are denoted by eight groups of hexadecimal quartets separated by colons in between them. |
IPv4 address notation: 239.255.255.255, 255.255.255.0 | An example of a valid IPv6 address: 2001:cdba:0000:0000:0000:0000:3257:9652 |
Because of the increase in the population, there is a need of Ipv6 protocol which can provide solution for:
- Increased address space
- More efficient routing
- Reduced management requirement
- Improved methods to change ISP
- Better mobility support
- Multi-homing
- Security
- Scoped address: link-local, site-local and global-address space
Reference
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