Weaknesses of IPv4
Running Out of Internet Addresses
- IPv4 only have 32 bits
- Internet Growth is limited
- IPv4 no longer have any of usage IP adresses, Solution is use NAT.
System Management Costs
- Maximum use of labour(hardware, workers), since the IPv4 IP address is limit, so buying more devices to support the configuration of NAT, and hiring more people to configure the NAT.
- Hardware: Router, Switch, Cable, and others
- Workers: Network Administrator, Expert Networking people to configure NAT
IPsec is Optional for IPv4
- IPv4 devices such as routers, switchs are not implement with IPsec, so using IPv4 devices are less security.
In conclusion, after IPv6 is arrived, those weaknesses of IPv4 is completely eliminated. First, IPv6 is support 128 bits compare to the IPv4, IPv4 just 32 bits. IPv6 is larger than IPv4 with 4 times of bits. Second, IPv6 is trying to reduce cost in use of labour such as hardware or workers. After applying or migrate IPv6, he/she no need to buy a lot of hardware to support configuration of NAT, or no necessary to hiring many networking workers to configure NAT anymore.Third, IPsec is mandatory in IPv6, if he/she use IPv6, all those devices such as routers, switches will automatic apply IPsec in this all devices.
- IPv6 has a huge amount of IP address.
- IPv6 help to reduce the use of labour.
- IPsec is mandatory in IPv6.
*What do you guy think? Anymore Weaknesses in IPv4?
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