Ipv4 & Ipv6

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IPv4 vs IPv6: What's the Difference Between IPv4 and IPv6?

IPv4 vs IPv6: What’s the Difference Between IPv4 and IPv6?

What is IP?
An IP (Internet Protocol) address is a numerical label assigned to each device connected to a computer network that uses the IP protocol for communication. An IP address acts as an identifier for a specific device on a particular network. The IP address is also called an IP number or Internet address.
IP address specifies the technical format of the addressing and packets scheme. Most networks combine IP with a TCP (Transmission Control Protocol). It also allows developing a virtual connection between a destination and a source.
Now in this IPv4 and IPv6 difference tutorial, we will learn What is IPv4 and IPv6?
What is IPv4?
IPv4 is an IP version widely used to identify devices on a network using an addressing system. It was the first version of IP deployed for production in the ARPANET in 1983. It uses a 32-bit address scheme to store 2^32 addresses which is more than 4 billion addresses. It is considered the primary Internet Protocol and carries 94% of Internet traffic.
What is IPv6?
IPv6 is the most recent version of the Internet Protocol. This new IP address version is being deployed to fulfill the need for more Internet addresses. It was aimed to resolve issues that are associated with IPv4. With 128-bit address space, it allows 340 undecillion unique address space. IPv6 is also called IPng (Internet Protocol next generation).
Internet Engineer Taskforce initiated it in early 1994. The design and development of that suite are now called IPv6.
KEY DIFFERENCE
IPv4 is 32-Bit IP address whereas IPv6 is a 128-Bit IP address.
IPv4 is a numeric addressing method whereas IPv6 is an alphanumeric addressing method.
IPv4 binary bits are separated by a dot(. ) whereas IPv6 binary bits are separated by a colon(:).
IPv4 offers 12 header fields whereas IPv6 offers 8 header fields.
IPv4 supports broadcast whereas IPv6 doesn’t support broadcast.
IPv4 has checksum fields while IPv6 doesn’t have checksum fields
When we compare IPv4 and IPv6, IPv4 supports VLSM (Variable Length Subnet Mask) whereas IPv6 doesn’t support VLSM.
IPv4 uses ARP (Address Resolution Protocol) to map to MAC address whereas IPv6 uses NDP (Neighbour Discovery Protocol) to map to MAC address.
Features of IPv4
Following are the features of IPv4:
Connectionless Protocol
Allow creating a simple virtual communication layer over diversified devices
It requires less memory, and ease of remembering addresses
Already supported protocol by millions of devices
Offers video libraries and conferences
Features of IPv6
Here are the features of IPv6:
Hierarchical addressing and routing infrastructure
Stateful and Stateless configuration
Support for quality of service (QoS)
An ideal protocol for neighboring node interaction
IPv4 vs IPv6
Difference Between IPv4 and IPv6 Addresses
IPv4 & IPv6 are both IP addresses that are binary numbers. Comparing IPv6 vs IPv4, IPv4 is 32 bit binary number while IPv6 is 128 bit binary number address. IPv4 address are separated by periods while IPv6 address are separated by colons.
Both are used to identify machines connected to a network. In principle, they are the same, but they are different in how they work. Below are the main differences between IPv4 and IPv6:
Basis for differences
IPv4
IPv6
Size of IP address
IPv4 is a 32-Bit IP Address.
IPv6 is 128 Bit IP Address.
Addressing method
IPv4 is a numeric address, and its binary bits are separated by a dot (. )
IPv6 is an alphanumeric address whose binary bits are separated by a colon (:). It also contains hexadecimal.
Number of header fields
12
8
Length of header filed
20
40
Checksum
Has checksum fields
Does not have checksum fields
Example
12. 244. 233. 165
2001:0db8:0000:0000:0000:ff00:0042:7879
Type of Addresses
Unicast, broadcast, and multicast.
Unicast, multicast, and anycast.
Number of classes
IPv4 offers five different classes of IP Address. Class A to E.
lPv6 allows storing an unlimited number of IP Address.
Configuration
You have to configure a newly installed system before it can communicate with other systems.
In IPv6, the configuration is optional, depending upon on functions needed.
VLSM support
IPv4 support VLSM (Variable Length Subnet mask).
IPv6 does not offer support for VLSM.
Fragmentation
Fragmentation is done by sending and forwarding routes.
Fragmentation is done by the sender.
Routing Information Protocol (RIP)
RIP is a routing protocol supported by the routed daemon.
RIP does not support IPv6. It uses static routes.
Network Configuration
Networks need to be configured either manually or with DHCP. IPv4 had several overlays to handle Internet growth, which require more maintenance efforts.
IPv6 support autoconfiguration capabilities.
Best feature
Widespread use of NAT (Network address translation) devices which allows single NAT address can mask thousands of
non-routable addresses, making end-to-end
integrity achievable.
It allows direct addressing because of vast address
Space.
Address Mask
Use for the designated network from host portion.
Not used.
SNMP
SNMP is a protocol used for system management.
SNMP does not support IPv6.
Mobility & Interoperability
Relatively constrained network topologies to which move restrict mobility and interoperability capabilities.
IPv6 provides interoperability and mobility
capabilities which are embedded in network devices.
Security
Security is dependent on applications – IPv4 was not designed with security in mind.
IPSec(Internet Protocol Security) is built into the IPv6 protocol, usable with
a proper key infrastructure.
Packet size
Packet size 576 bytes required, fragmentation optional
1208 bytes required without fragmentation
Packet fragmentation
Allows from routers and sending host
Sending hosts only
Packet header
Does not identify packet flow for QoS handling which includes checksum options.
Packet head contains Flow Label field that specifies packet flow for QoS handling
DNS records
Address (A) records, maps hostnames
Address (AAAA) records, maps hostnames
Address configuration
Manual or via DHCP
Stateless address autoconfiguration using Internet Control Message Protocol version 6 (ICMPv6) or DHCPv6
IP to MAC resolution
Broadcast ARP
Multicast Neighbour Solicitation
Local subnet Group management
Internet Group Management Protocol GMP)
Multicast Listener Discovery (MLD)
Optional Fields
Has Optional Fields
Does not have optional fields. But Extension headers are available.
IPSec
Internet Protocol Security (IPSec) concerning network security is optional
Internet Protocol Security (IPSec) Concerning network security is mandatory
Dynamic host configuration Server
Clients have approach DHCS (Dynamic Host Configuration server) whenever they want to connect to a network.
A Client does not have to approach any such server as they are given permanent addresses.
Mapping
Uses ARP(Address Resolution Protocol) to map to MAC address
Uses NDP(Neighbour Discovery Protocol) to map to MAC address
Combability with mobile devices
IPv4 address uses the dot-decimal notation. That’s why it is not suitable for mobile networks.
IPv6 address is represented in hexadecimal, colon- separated notation.
IPv6 is better suited to mobile
networks.
IPv4 and IPv6 cannot communicate with other but can exist together on the same network. This is known as Dual Stack.
Differences between IPv4 and IPv6 - Linksys Official Support

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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%.
Related Articles:
Checking the computer’s IPv6 AddressHow to verify if your system is capable of IPv6 connectivityLinksys devices that support IPv6
Change TCP/IP settings - Microsoft Support

Change TCP/IP settings – Microsoft Support

TCP/IP defines how your PC communicates with other PCs.
To make it easier to manage TCP/IP settings, we recommend using automated Dynamic Host Configuration Protocol (DHCP). DHCP automatically assigns Internet Protocol (IP) addresses to the computers on your network if your network supports it. If you use DHCP, then you don’t have to change your TCP/IP settings if you move your PC to another location, and DHCP doesn’t require you to manually configure TCP/IP settings, such as Domain Name System (DNS) and Windows Internet Name Service (WINS).
To enable DHCP or change other TCP/IP settings
Select Start, then type settings. Select Settings > Network & internet.
Do one of the following:
For a Wi-Fi network, select Wi-Fi > Manage known networks. Choose the network for which you want to change the settings.
For an Ethernet network, select Ethernet, then select the Ethernet network you’re connected to.
Next to IP assignment, select Edit.
Under Edit network IP settings or Edit IP settings, select Automatic (DHCP) or Manual.
To specify IPv4 settings manually
Under Edit network IP settings or Edit IP settings, choose Manual, then turn on IPv4.
To specify an IP address, in the IP address, Subnet mask, and Gateway boxes, type the IP address settings.
To specify a DNS server address, in the Preferred DNS and Alternate DNS boxes, type the addresses of the primary and secondary DNS servers.
To specify if you want to use an encrypted (DNS over HTTPS) or unencrypted connection to the DNS server you specify, for Preferred DNS encryption and Alternate DNS encryption, choose the setting you want.
To specify IPv6 settings manually
Under Edit network IP settings or Edit IP settings, choose Manual, then turn on IPv6.
To specify an IP address, in the IP address, Subnet prefix length, and Gateway boxes, type the IP address settings.
To specify if you want to use an encrypted (DNS over HTTPS) or unencrypted connection to the DNS server you specify, for Preferred DNS encryption and Alternate DNS encryption, choose the setting you want.
When you select Automatic (DHCP), the IP address settings and DNS server address setting are set automatically by your router or other access point (recommended).
When you select Manual, you can manually set your IP address settings and DNS server address.
When you’re done, select Save.
Note: To install IPv4, run Command Prompt as an administrator, type netsh interface ipv4 install, and then press Enter.
Select Start, then select Settings > Network & Internet.
For a Wi-Fi network, select Wi-Fi > Manage known networks. Choose the network you want to change the settings for, then select Properties.
For an Ethernet network, select Ethernet, then select the Ethernet network you’re connected to.
Under IP assignment, select Edit.
Under Edit IP settings, select Automatic (DHCP) or Manual.
Under Edit IP settings, choose Manual, then turn on IPv4.
To specify an IP address, in the IP address, Subnet prefix length, and Gateway boxes, type the IP address settings.
To specify a DNS server address, in the Preferred DNS and Alternate DNS boxes, type the addresses of the primary and secondary DNS servers.
Under Edit IP settings, choose Manual, then turn on IPv6.
When you select Automatic (DHCP), the IP address settings and DNS server address setting are set automatically by your router or other access point (recommended).
When you select Manual, you can manually set your IP address settings and DNS server address.
When you’re done, select Save.
In Windows 8. 1, select the Start button, start typing View network connections, and then select View network connections in the list.
In Windows 7, open Network Connections by selecting the Start button, and then selecting Control Panel. In the search box, type adapter, and then, under Network and Sharing Center, select View network connections.
Right-click the connection that you want to change, and then select Properties. If you’re prompted for an administrator password or confirmation, type the password or provide confirmation.
Select the Networking tab. Under This connection uses the following items, select either Internet Protocol Version 4 (TCP/IPv4) or Internet Protocol Version 6 (TCP/IPv6), and then select Properties.
To specify IPv4 IP address settings, do one of the following:
To get IP settings automatically using DHCP, select Obtain an IP address automatically, and then select OK.
To specify an IP address, select Use the following IP address, and then, in the IP address, Subnet mask, and Default gateway boxes, type the IP address settings.
To specify IPv6 IP address settings, do one of the following:
To get IP settings automatically using DHCP, select Obtain an IPv6 address automatically, and then select OK.
To specify an IP address, select Use the following IPv6 address, and then, in the IPv6 address, Subnet prefix length, and Default gateway boxes, type the IP address settings.
To specify DNS server address settings, do one of the following:
To get a DNS server address automatically using DHCP, select Obtain DNS server address automatically, and then select OK.
To specify a DNS server address, select Use the following DNS server addresses, and then, in the Preferred DNS server and Alternate DNS server boxes, type the addresses of the primary and secondary DNS servers.
To change advanced DNS, WINS, and IP settings, select Advanced.
Note: To install IPv4, run Command Prompt as an administrator, type netsh interface ipv4 install, and then press Enter.

Frequently Asked Questions about ipv4 & ipv6

Which is faster IPv4 or IPv6?

IPv4 occasionally won the test. In theory, IPv6 should be a little faster since cycles don’t have to be wasted on NAT translations. But IPv6 also has larger packets, which may make it slower for some use cases. … So with time and tuning, IPv6 networks will get faster.May 8, 2020

Should I use IPv4 or IPv6?

Switching from IPv4 to IPv6 will give the Internet a much larger pool of IP addresses. It should also allow every device to have its own public IP address, rather than be hidden behind a NAT router.Sep 22, 2016

What do you know about IPv4 and IPv6 difference between them?

IPv4 and IPv6 are internet protocol version 4 and internet protocol version 6, IP version 6 is the new version of Internet Protocol, which is way better than IP version 4 in terms of complexity and efficiency….Differences between IPv4 and IPv6.IPv4IPv6IPv4 has header of 20-60 bytes.IPv6 has header of 40 bytes fixed11 more rows•Feb 17, 2021

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