Difference between IPV4 AND IPV6


IPV4:
     Internet Protocol version 4 (IPv4) is the fourth version of the Internet Protocol (IP). It is one of the core protocols of standards-based internetworking methods in the Internet, and was the first version deployed for production in the ARPANET in 1983.
   It still routes most Internet traffic today, despite the ongoing deployment of a successor protocol, IPv6. IPv4 is described in IETF publication RFC 791 (September 1981), replacing an earlier definition (RFC 760, January 1980).
   IPv4 is a connectionless protocol for use on packet-switched networks. It operates on a best effort delivery model, in that it does not guarantee delivery, nor does it assure proper sequencing or avoidance of duplicate delivery.
   These aspects, including data integrity, are addressed by an upper layer transport protocol, such as the Transmission Control Protocol(TCP).

Name
Address range
Number of addresses
Classful description
Largest CIDR block
24-bit block
10.0.0.0 – 10.255.255.255
16777216
Single Class A
10.0.0.0/8
20-bit block
172.16.0.0 – 172.31.255.255
1048576
Contiguous range of 16 Class B blocks
172.16.0.0/12
16-bit block
192.168.0.0 – 192.168.255.255
65536
Contiguous range of 256 Class C blocks
192.168.0.0/16


  
IPV6:
    An Internet Protocol Version 6 address (IPv6 address) is a numerical label that is used to identify a network interface of a computer or other network node participating in an IPv6 computer network.
    An IP address serves the purpose of uniquely identifying an individual network interface of a host, locating it on the network, and thus permitting the routing of IP packets between hosts.
    For routing, IP addresses are present in fields of the packet header where they indicate source and destination of the packet.
    IPv6 is the successor to the first addressing infrastructure of the InternetInternet Protocol version 4 (IPv4). In contrast to IPv4, which defined an IP address as a 32-bit value, IPv6 addresses have a size of 128 bits.
    Therefore, IPv6 has a vastly enlarged address space compared to IPv4.

Address
Description
Available Scopes
ff0X::1
All nodes address, identify the group of all IPv6 nodes
Available in scope 1 (interface-local) and 2 (link-local):
·         ff01::1 → All nodes in the interface-local
·         ff02::1 → All nodes in the link-local
ff0X::2
All routers
Available in scope 1 (interface-local), 2 (link-local) and 5 (site-local):
·         ff01::2 → All routers in the interface-local
·         ff02::2 → All routers in the link-local
·         ff05::2 → All routers in the site-local
ff02::5
OSPFIGP
2 (link-local)
ff02::6
OSPFIGP Designated Routers
2 (link-local)
ff02::9
RIP Routers
2 (link-local)
ff02::a
EIGRP Routers
2 (link-local)
ff02::d
All PIM Routers
2 (link-local)
ff02::1a
All RPL Routers
2 (link-local)
ff0X::fb
mDNSv6
Available in all scopes
ff0X::101
All Network Time Protocol (NTP) servers
Available in all scopes
ff02::1:1
Link Name
2 (link-local)
ff02::1:2
All-dhcp-agents
2 (link-local)
ff02::1:3
Link-local Multicast Name Resolution
2 (link-local)
ff05::1:3
All-dhcp-servers
5 (site-local)
ff02::1:ff00:0/104
2 (link-local)
ff02::2:ff00:0/104
Node Information Queries
2 (link-local)









    

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