Introduction to IPv6 for AFCAT 2020

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Complete Video at – Introduction to IPv6: Addressing Modes & Format of IPV6(Computer Science)

Topics

• Introduction to IPv6

• Address Format

• Addressing Modes

• Unicast Addressing Mode

• Multicast Addressing Mode

• Anycast Addressing Mode

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Introduction to IPv6

• As IPv4 address space was limited , so IPv6 was developed to solve this problem of address space exhaustion.

• IPv6 (Internet Protocol version 6 ) is the latest version of Internet protocol.

• It was developed by Internet Engineering Task Force(IETF).

• It was developed mainly to deal with the problem of IPv4 exhaustion.

Address Format of IPV6

• IPv6 address is of 128 bits, which is divided into 8 groups.

• Each group consists of 16 bits and separated by colon(:) .

• Each group is represented by 4 bit hexadecimal number.

• Example :

Address Format of IPV6 Contd

The Ipv6 Address is Divided into Two Parts

The Network Component is Further Divided As

Addressing Modes

• IPv6 supports 3 types of addressing modes:

  • Unicast addressing mode

  • Multicast addressing mode

  • Anycast addressing mode

Unicast Addressing Mode

• In this,IPv6 host is uniquely identified in network segment.

• When router receives unicast IP packet , it sends out to interface that is connected to that particular host

Multicast Addressing Mode

• In this, all the hosts which are interested in multicast information are joined to multicast group first .

• Multicast packet is received by all the hosts which are joined by multicast group.

Anycast Addressing Mode

• It’s a new addressing mode introduced by IPv6.

• In this , multiple hosts are assigned same anycast IP addresses.

• When a host wants to communicate to host with anycast IP address, it sends unicast message.

• The unicast message is delivered to host closest to the sender.

MCQ

Q1. IPv6 does not use _________ type of address.

Options:

A. Unicast

B. Broadcast

C. Multicast

D. None of the above

Answer: B

Q2. The size of IP address in IPv6 is:

Options:

A. 4 bytes

B. 128 bytes

C. 8 bytes

D. 100 bytes

Answer: B

• We learnt about:

# Introduction IPv6

# Address Format

#Addressing Modes

#Unicast Mode

#Multicast Mode

# Anycast Mode

-Mayank