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Differences between IPv4 and IPv6 – Linksys Official Support
The Internet Protocol version 4 (IPv4) is a protocol for use on packet-switched Link Layer networks (e. g. Ethernet). IPv4 provides an addressing capability of approximately 4. 3 billion addresses.
The Internet Protocol version 6 (IPv6) is more advanced and has better features compared to IPv4. It has the capability to provide an infinite number of addresses. It is replacing IPv4 to accommodate the growing number of networks worldwide and help solve the IP address exhaustion problem.
One of the differences between IPv4 and IPv6 is the appearance of the IP addresses. IPv4 uses four 1 byte decimal numbers, separated by a dot (i. e. 192. 168. 1. 1), while IPv6 uses hexadecimal numbers that are separated by colons (i. fe80::d4a8:6435:d2d8:d9f3b11).
Below is the summary of the differences between the IPv4 and IPv6:
IPv4IPv6No. of bits on IP Address32128FormatdecimalhexadecimalCapable of Addresses4. 3 billioninfinite numberHow to ping ping
Advantages of IPv6 over IPv4:
IPv6 simplified the router’s task compared to IPv4. IPv6 is more compatible to mobile networks than IPv4. IPv6 allows for bigger payloads than what is allowed in IPv4. IPv6 is used by less than 1% of the networks, while IPv4 is still in use by the remaining 99%.
Checking the computer’s IPv6 AddressHow to verify if your system is capable of IPv6 connectivityLinksys devices that support IPv6
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Everything You Need to Know About IPv4 vs. IPv6
The “IP” in IPv4 and IPv6 stands for Internet Protocol, which is a set of rules that determine how devices transmit data packets across the Internet. Internet Protocol also assigns a unique address to each device on the web. These addresses ensure data packets are routed to the correct device.
What is IPv4?
IPv4 or Internet Protocol Version 4 is the most common protocol for transmitting data packets on the web. IPv4 provides both the identification (IP addresses) for each device on the Internet and the rules that govern how data packets are transmitted between those devices.
With IPv4, a typical IP address has 32 bits and is in dotted-decimal form, like this:
192. 0. 2. 235
Because there are only 232 unique hosts in this decimal format, there are only about 4. 3 billion IPv4 addresses.
What is IPv6?
There’s been a massive increase in devices connected to the Internet in the last decade—with a rise from 5 Internet devices per household to 50 Internet devices per household from 2015 to 2020. This prompted the Internet Engineering Tracking Taskforce (IETF) to create a new Internet protocol, IPv6. It was released in December 1998.
IPv6 addresses are written in hexadecimal format, like this:
The Pros of IPv4 vs. IPv6
Despite IPv6 being the newer, updated IP, there are still many advantages of IPv4.
Existing infrastructure – Most websites use IPv4, even those that also support IPv6. This makes version four a more seamless experience. That is, until most of the Internet switches to version six.
Simplicity – IPv4’s 32-bit dotted decimal is much smaller and simpler than IPv6’s hexadecimal numbers. This simplicity is easier for humans to read.
Support – Because most traffic is still using IPv4, Network operators find IPv4 familiar. They may wait until more traffic is IPv6 before they make any decisions about their own infrastructure—especially if they have enough IPv4 addresses for the near future.
The Cons of IPv4 vs. IPv6
Running short on IPv4 addresses isn’t the only con of version four.
Exhaustion of IPv4 – As we’ve covered, the world is short on IPv4 addresses. This means there’s a cost to buy IPv4 addresses, where IPv6 addresses can be had (in unimaginable quantities) for the cost of registration with a regional registry (RIR). You also pay registry costs with IPv4.
IPv6 Speed – Web and cloud services provider, Akamai, measured the speed of IPv6 vs. IPv4. They found, “Sites load 5% faster in median and 15% faster for the 95% percentile on IPv6 compared to IPv4. ”
Network Address Translation (NAT) for IPv4 – NAT allows a group of devices (usually 10-20) that share a single public IP with IPv4. This requires complex configurations like forwarding and firewall alterations. Because IPv6 has so many addresses, IPv6 devices don’t require additional configuration.
Understanding the IPv4 market
The pros of IPv4, combined with the lack of addresses, created a new marketplace. Today, companies that need IPv4 addresses can buy them through IPv4 Brokers, or a company looking to move to IPv6 can sell IPv4 addresses.
When a company needs more IP addresses, they have three options:
Buy IPv4 addresses – That’s what is here for. Companies can also sell their IPv4 addresses if they’re beginning to deploy IPv6.
Use NAT – As mentioned above, NAT allows one address to be shared among many devices. However, NAT still requires one IPv4 address (usually one per 10-20 people). This has some drawbacks, namely speed issues as packets have to transition paths.
Deploy IPv6 – A business can deploy IPv6, but this may be of limited usefulness until most traffic is also on IPv6. So, even if a business deploys IPv6, it still needs more IPv4 addresses or NAT.
There’s much debate around which is better—IPv4 or IPv6. But really, it’s about your specific needs. If you’d like more information on the differences between IPv4 vs. IPv6, or if you’re looking for help with either, please reach out to us today.
IPv4 vs. IPv6 Benefits – What is it? | ThousandEyes
What is IPv6?
IPv6 is the next generation Internet Protocol (IP) address standard intended to supplement and eventually replace IPv4, the protocol many Internet services still use today. Every computer, mobile phone, home automation component, IoT sensor and any other device connected to the Internet needs a numerical IP address to communicate between other devices. The original IP address scheme, called IPv4, is running out of addresses due to its widespread usage from the proliferation of so many connected devices.
What is IPv4?
IPv4 stands for Internet Protocol version 4. It is the underlying technology that makes it possible for us to connect our devices to the web. Whenever a device accesses the Internet, it is assigned a unique, numerical IP address such as 99. 48. 227. To send data from one computer to another through the web, a data packet must be transferred across the network containing the IP addresses of both devices.
Why Support IPv6? What are the benefits of IPv6?
IPv6 (Internet Protocol version 6) is the sixth revision to the Internet Protocol and the successor to IPv4. It functions similarly to IPv4 in that it provides the unique IP addresses necessary for Internet-enabled devices to communicate. However, it does have one significant difference: it utilizes a 128-bit IP address.
Key benefits to IPv6 include:
No more NAT (Network Address Translation)
No more private address collisions
Better multicast routing
Simpler header format
Simplified, more efficient routing
True quality of service (QoS), also called “flow labeling”
Built-in authentication and privacy support
Flexible options and extensions
Easier administration (no more DHCP)
IPv4 uses a 32-bit address for its Internet addresses. That means it can provide support for 2^32 IP addresses in total â around 4. 29 billion. That may seem like a lot, but all 4. 29 billion IP addresses have now been assigned, leading to the address shortage issues we face today.
IPv6 utilizes 128-bit Internet addresses. Therefore, it can support 2^128 Internet addresses—340, 282, 366, 920, 938, 463, 463, 374, 607, 431, 768, 211, 456 of them to be exact. The number of IPv6 addresses is 1028 times larger than the number of IPv4 addresses. So there are more than enough IPv6 addresses to allow for Internet devices to expand for a very long time.
The text form of the IPv6 address is xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx, where each x is a hexadecimal digit, representing 4 bits. Leading zeros can be omitted. The double colon (::) can be used once in the text form of an address, to designate any number of 0 bits.
With Dual-IP stacks, your computers, routers, switches, and other devices run both protocols, but IPv6 is the preferred protocol. A typical procedure for businesses is to start by enabling both TCP/IP protocol stacks on the wide area network (WAN) core routers, then perimeter routers and firewalls, followed by data-center routers and finally the desktop access routers.
ThousandEyes Support for IPv6
With IPv6 becoming more prevalent in cloud provider and consumer access networks, you may already be on the path to IPv6 deployment with your network and applications.
If you are looking to understand IPv6 in your environment there are three things you should be monitoring:
IPv6 DNS resolution
IPv6 traffic paths
IPv6 BGP prefixes and routes
ThousandEyes has support for IPv6 so that organizations can utilize IPv6 across all of their test types (web, network, voice, routing) and agent types (cloud, enterprise, endpoint).
ThousandEyes Cloud Agent support for IPv6 is provided on six continents allowing global coverage for organizations. ThousandEyes also supports the use of dual-stack IPv4 and IPv6 Enterprise Agents. Enterprise Agents can have both addresses assigned and executes tests based on a user-defined preference for only IPv4, only IPv6 or a preference for IPv6.
Frequently Asked Questions about what is ipv4 or ipv6
Which is faster IPv4 or IPv6?
IPv6 Speed – Web and cloud services provider, Akamai, measured the speed of IPv6 vs. IPv4. They found, “Sites load 5% faster in median and 15% faster for the 95% percentile on IPv6 compared to IPv4.”Aug 18, 2020
Why do we use IPv4 instead of IPv6?
IPv4 uses a 32-bit address for its Internet addresses. That means it can provide support for 2^32 IP addresses in total â€” around 4.29 billion. … So there are more than enough IPv6 addresses to allow for Internet devices to expand for a very long time.
What is difference IPv4 and IPv6?
The main difference between IPv4 and IPv6 is the address size of IP addresses. The IPv4 is a 32-bit address, whereas IPv6 is a 128-bit hexadecimal address. IPv6 provides a large address space, and it contains a simple header as compared to IPv4.