major concern in ipv4 addressing
Answers
here are two main problems with IPv4. First of all, today, there are 7.3 billion people in the world. Half of them own a computer of some sort, and 6 billion have access to mobile phones. If we handed out just one IPv4 address to every person, we would be 3 billion IP addresses short. This makes reclaiming lost address space essentially pointless. Obviously, more addresses are needed for a modern Internet. The other problem with IPv4 is network address translation (NAT). Overloaded NAT — one IP with multiple private IPs behind it — breaks quite a few applications and provides no additional security against Internet threats. This results in a cost increase with no counter-benefit.
In their IPv4 Countdown Plan, ARIN predicts that we will exhaust IPv4 space within the next year. This means that providers will no longer be able to supply routable public IPv4 addresses. Shortly thereafter, you won’t be able to get additional IPv4 addresses from your provider, which means that you will be unable to turn up new public IP services.
here are two main problems with IPv4. First of all, today, there are 7.3 billion people in the world. Half of them own a computer of some sort, and 6 billion have access to mobile phones. If we handed out just one IPv4 address to every person, we would be 3 billion IP addresses short. This makes reclaiming lost address space essentially pointless. Obviously, more addresses are needed for a modern Internet. The other problem with IPv4 is network address translation (NAT). Overloaded NAT — one IP with multiple private IPs behind it — breaks quite a few applications and provides no additional security against Internet threats. This results in a cost increase with no counter-benefit.
In their IPv4 Countdown Plan, ARIN predicts that we will exhaust IPv4 space within the next year. This means that providers will no longer be able to supply routable public IPv4 addresses. Shortly thereafter, you won’t be able to get additional IPv4 addresses from your provider, which means that you will be unable to turn up new public IP services.