Internet is address operated. The devices which are also connected to the internet such as your phone, laptop, smart TV or even your fridge have identifiers to respond. These addresses are termed as IP addresses. The world has been running on IPv4 over the decades, however, due to the ever growing number of gadgets that are being interconnected, it has been replaced with another IPv6.
The IPv6 is still a mystery to most people; why do we have it, what is the difference between IPv4 and IPv6 and why should we even care about it in the future of internet so this guide explains it all in a simple language.
Let’s dive in.
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What is an IP Address?
The IP address (Internet Protocol address) is a special numeric name of each device of a network. It enables devices to locate one another and communicate with each other – such as postal addresses via the internet.
There are two main versions:
IPv4 (Internet Protocol version 4)- it was implemented in 1981.
• Internet Protocol version 6(IPv6) – released in 1998.
The early internet had been using IPv4. IPv6 is seen to drive the future.
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What is IPv4?
The internet has a pioneer system of solving IPv4.
An address using IPv4 will be the following:
192.168.1.1
It is made up of four figures and dots in between having the 0 255 range. This addressing is referred to as 32-bit addressing.
Key Features of IPv4
• Uses 32 bits
has a population of approximately 4.3 billion addresses.
• Decimal format
The devices are widely supported.
Simple and easy to the first internet design.
At the time of designing the IPv4, 4.3 billion addresses were considered to be enough. Billions of smartphones, IoT devices, smart homes and cloud infrastructure could not be estimated by anyone.
The current day has almost depleted the IPv4 addresses.
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Address Shortage of IPv4 is one of the Issues.
The internet was made speedy beyond imagination.
By the early 2010s:
• Mobile devices exploded
• IoT devices multiplied
• The international internet penetration was improved.
• Cloud computing surged
The free IPv4 addresses had been withheld in the world.
Engineers were obliged to resort to such methods as:
IBB (Internet Base Broadcasting) – single device in one IP.
• Private IP address ranges
• Address recycling
All these solutions were effective, but they were productless and complicated.
That’s where IPv6 comes in.
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What is IPv6?
The new internet addressing protocol is the IPv6 that is to supersede the IPv4.
The IPv6 address resembles the following:
2001:0db8:85a3:0000:0000:8a2e:0370:7334
It contains an addressing that is 128-bit in a hexadecimal form and is surrounded by colons.
This provides IPv6 with addresses that are practically unmeasurable.
How many IPv6 addresses exist?
IPv6 supports:
340 undecillion addresses
That’s:
340,000,000,000,000,000,000,000,000,000,000,000,000
Sufficient to give billions of addresses to all humans on earth.
The problem of how to cope with exhaustion is no longer present.
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The important IPv4 and IPv6 Dissimilarities.
We have to draw comparisons between them.
Address Length
IPv4:
• 32-bit address
• ~4.3 billion total
IPv6:
• 128-bit address
• Virtually unlimited
This is the greatest disparities.
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Address Format
IPv4:
192.168.1.1
IPv6:
2001:db8::1
The IPv6 addresses can be shortened as the hexadecimal numbers can be used to make the addresses shorter in shorthand to ensure that the addresses are short and can be analyzed easily.
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Configuration
IPv4:
This was mandatory in manual setting or DHCP.
IPv6:
• Supports automatic set-up.
The devices are self-assigned address.
• Plug-and-play networking
This minimizes the management which is applied.
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Security
IPv4:
Security was brought in as an option.
IPv6:
• Built-in IPsec support
• Encryption and authentication were invented.
IPv6 was one of the security requirements which were constructed in the modern times.
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Network Efficiency
IPv6 simplifies routing by:
• Reducing broadcast traffic
• Improving packet handling
• Simplification of header format.
This results in performance at a larger level.
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NAT Dependency
NAT is important to Ipv4 to allocate addresses.
The IPv6 version does not need NAT since all devices could be given a public address.
This reinstates the end-to-end connectivity that is enhanced:
• Peer-to-peer networking
• VoIP quality
• Gaming performance
Distant communication of appliances.
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Why Have not we switched to IPv6?
Great question.
IP v6 has not been used aggressively despite the fact that it is beneficial.
Reasons include:
Legacy Infrastructure
IPv4 networks of hardware and software are extremely numerous. Upgrading requires:
• Investment
• Planning
• Staff training
• Compatibility testing
The conversion of systems in firms is not a one day event.
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Compatibility Challenges
It is not compatible between the IPv4 and ipv6.
It suggests a requirement of transition strategies and this incorporates:
• Dual stack networking (dual protocols)
• Tunneling
• Translation gateways
This makes things hard with such solutions.
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No Immediate Pressure
NAT gave IPv4 the opportunity to survive. This is causing the migration delay of many businesses because IPv4 can still be serviced.
The IPv6-first designs are however gaining popularities in the new networks.
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The IPv6 Advantages to the Future.
IPv6 is not much about additional addresses. It leads to emergence of new opportunities.
1. The Internet of Things (IoT) Development.
Smart cities, smart houses, and sensors in industries do demand colossal address space.
IPv6 supports:
• Millions of inter-connected gadgets.
• Direct communication to machines.
• Effective network management.
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2. Improved Performance
The IPv6 routing is more scaleable.
Benefits include:
• Faster packet processing
• Reduced network congestion
• Better scalability
Big cloud providers already have ipv6 optimization.
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3. Better Mobile Networking
Interoperability Mobile carriers are migrating to IPv6-only networks.
Why?
• Easier device provisioning
• Lower infrastructure costs
• Increased load-capacity.
Most of the existing smart phones use IPv6 as their major protocol.
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4. Reduced Network Architecture.
Without NAT:
• Networks become cleaner
• The troubleshooting is made easier.
Peer to peer communication is enhanced.
More predictive are applications.
This lessens the complexity of overtime engineering.
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Real-World Adoption Today
IPv6 usage is conditional upon a country, as well as a provider.
It has IPv6 traffic over 50 percent in certain regions and they include:
• United States
• India
• Germany
• France
• Japan
The key vendors that support IPv6 are:
• Netflix
• Amazon
• Microsoft
The majority of the contemporary operating systems have default IPv6.
It is quite possible that you are even using IPv6 now but you may not even be aware of it.
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Will IPv4 Ever Disappear?
Not anytime soon.
The intrusion of IPv4 and IPv6 will not be short-term.
The internet is not either switching it on or off.
Imagine it as an improvement of highways when driving.
Eventually:
• IPv6 becomes dominant
• IPv4 becomes legacy
Introduction of new networks is referred to as ipv6-first.
However, it will not be ready to abandon IPv4 decades.
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Do Businesses Care about IPv6 Problems?
Absolutely.
Organizations should:
[ ] Make the infrastructure IPv6 ready.
Applications of compatibility testing.
Install dual stack environments.
• Train IT teams
Failure to consider IPv6 may be the disaster in future.
Early adoption offers competitive performance as well as connectivity in the world.
Final Thoughts
IPv4 built the internet. IPv6 sets it up in the future.
IPv6 can make the internet to be infinitely scalable as all the new devices connect the world – AI systems and smart infrastructure.
It might be a slow process but the process is unavoidable.
I am certain that you will not be behind the technology tomorrow with the present knowledge of IPv6.
The IPv6 is not merely a new version of a protocol, but as a developer, network engineer or a technological enthusiast, it is the start of the new age of the internet.
