Internet Protocol Version 6 : ©Abhinav_R_Kamble Presentations

SEMINAR ON INTERNET PROTOCOL VERSION

6.

PRESENTED BY:

KAMBLE ABHINAV RAJENDRA.

DEPARTMENT OF COMPUTER ENGINEERING.

1 ©Copyright Abhinav_R_Kamble

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OUTLINES

• INTRODUCTION.

• WHY CHANGE?

• DIFFERENCE BETWEEN IPV6 AND IPV4.

• ADVANTAGES OF IPV6 OVER IPV4.

• ABOUT IPV6.

• THE LIMITATIONS.

• CONCLUSION.


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Why Change?

• New computer and communication technologies

– New technologies = new possibilities and needs

• New applications

– New ways to use Internet means new protocols

needed

• Increases in size and load

– Massive growth means old ways strained


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Features of IPv6

• Larger Address Space

• Aggregation-based address hierarchy

– Efficient backbone routing.

• Efficient and Extensible IP datagram.

• Stateless Address Auto configuration.

• Security (IP sec mandatory).

• Mobility.


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• DIFFERENCE BETWEEN IPV6 AND IPV4……..


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Feature IPv4 IPv6

Source and destination address

32 bits 128 bits

IPSec Optional required

Payload ID for QoS in the header

No identification Using Flow label field

Fragmentation Both router and the sending hosts

Only supported at the sending hosts

Header checksum included Not included

Resolve IP address to a link layer address

broadcast ARP request Multicast Neighbor Solicitation message


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Feature IPv4 IPv6

Determine the address of the best default gateway

ICMP Router Discovery(optional)

ICMPv6 Router Solicitation and Router Advertisement

(required)

Send traffic to all nodes on a subnet

Broadcast Link-local scope all-nodes multicast address

Configure address Manually or DHCP Autoconfiguration

Manage local subnet group membership

(IGMP) Multicast Listener Discovery (MLD)


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Advantages of IPv6 over IPv4

• Larger address space

• Better header format

• New options

• Allowance for extension

• Support for resource allocation

• Support for more security

• Support for mobility


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IPv6 Addresses

• 128-bit addresses

• Multiple addresses can be assigned to an interface

• Provider-based hierarchy to be used in the

beginning

• Addresses should have 64-bit interface IDs in EUI-64

format

• Following special addresses are defined :

– IPv4-mapped

– IPv4-compatible

– link-local

– site-local


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LIMITATION

• With IPv6 it helps to think in terms of the number

of subnets, not hosts as we currently do with IPv4.

• IPv6 addresses are written in hexadecimal notation.

• The allocation cannot be split at any single bit.


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Conclusion

IPv6 is NEW … – built on the experiences learned from IPv4.

– new features. – large address space. – new efficient header. – auto configuration. … and OLD – still IP. – build on a solid base. – started in 1995, a lot of implementations and

tests done.


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