IPV4 vs
IPV6
Internet protocol Version 4 (IPv4): Internet protocol is glue that holds the internet together. It transfers
the datagrams from source to destination without considering that whether the
machines are on the same network or not. IP is the main transport mechanism
used by TCP/IP suit of protocols. IP provides connection-less, unreliable
services.
This means,
it will try its best to transfer the packets but it provides no guarantee for
this. The packets transmitted through IP can be lost due to a number of reasons
which includes noise that cause bit errors, congestion that cause loss of
packets, router failure or host failures etc.
INTERNET
PROTOCOT VERSION 6
The
numbers of users of the internet are increasing day by day and the services
offered to these users are also increasing. A huge number of addresses are
needed to accommodate such vast number of hosts. The internet not only
transmits textual data. It also allows us to transmit audio and video data. In
such data, the high speed data transfer is desired.
(i) IPv6
address is 128 bits long. This is far more than 32 bit long addresses used by
Ipv4. This provides 296 more unique addresses
(ii)
Ipv6 header has got separate options field. This speeds up the routing as most
of the times, options are not needed.
(iii)
Several new options have been added to set of options.
(iv) To
accommodate the real time traffic, the Ipv6 uses Flow Label field instead of
Type of Service field of Ipv4. With this field, a user can request for the type
of service to be given to the datagram.
(v) The
Ipv6 contains options for encryption and decryption of data. This provides additional
security to the information.
In this
protocol, the IP address is of 128 bits long. The address is divided into eight
sections of 16 bits in length. Each 16 bit section is represented by four
hexadecimal digits. A colon is used to separate every four hexadecimal digits.
This way, the address consists of 32 hexadecimal digits.
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