Keep reading to understand IPv4 vs. IPv6 and learn how to keep your computer secure. Well, an IP address is a string of numbers that is assigned to a device to identify it on the internet. It is an address, just as the number and street of your home is an address. While your home address is used to send you mail, your IP address is used to send packets of data that you request.
Internet Protocol version 4, generally referred to as IPv4, was developed in the early s. An IPv4 address comprises four numbers, each ranging from 0 to , which are separated by periods.
IPv4 has a theoretical limit of 4. The internet has been running out of IPv4 addresses since the s. Developed to solve these capacity issues for good, IPv6 was needed when IPv4 could no longer support the load.
At present, IPv4 coexists on the internet with its newer version, though eventually, everything will use IPv6. Replacing old IPv4 equipment would be prohibitively expensive and disruptive, and so IPv6 is being slowly rolled out as older IPv4 hardware is retired.
Internet Protocol version 6, or IPv6, was first introduced in the late s as a replacement for IPv4. IPv6 uses bit addresses, allowing for a theoretical ,,,,,,,,,,,,, or undecillion addresses. IPv6 addresses are represented as eight groups of four hexadecimal digits, with the groups being separated by colons.
The advent of IPv6 brought more functionality, in addition to more IP addresses. For example, IPv6 supports multicast addressing , which allows bandwidth-intensive packet flows such as multimedia streams to be sent to multiple destinations simultaneously, reducing network bandwidth.
But is IPv6 better than IPv4? IPv6 has a new feature called autoconfiguration , which allows a device to generate an IPv6 address as soon as it powers up and puts itself on the network. The device begins by looking for an IPv6 router. If one is present, the device can generate a local address and a globally routable address, allowing access to the wider internet. In IPv4-based networks, the process of adding devices often has to be done manually.
IPv6 allows devices to stay connected to several networks simultaneously. This is due to interoperability and configuration capabilities that enable the hardware to automatically assign multiple IP addresses to the same device. How do IPv4 and IPv6 compare when it comes to speed? The security blog Sucuri ran a series of tests in which they found that in direct connections, IPv4 and IPv6 delivered the same speed. IPv4 occasionally won the test.
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Post your question to Twitter anytime. Differences between IPv4 and IPv6. Share the Article:. IPv6 is more compatible to mobile networks than IPv4. IPv6 allows for bigger payloads than what is allowed in IPv4. The number of IPv6 addresses is 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.
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:. 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.
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