First watch this video to know what i am talking about.
Differences about IPv4 and IPv6:
IPv4:
192.168.201.113 is a tipical IPv4 address.
A IPv4 address has 32 bits and consists of dots and decimal numbers.
There are only 4 billion address possible.
IPv6:
A524:72D3:2C80:DD02:0029:EC7A:002B:EA73 is a tipical IPv6 address.
A IPv6 address has 128 bits and consists of colons and hexadecimal numbers. There are 3,8*10^38 address possible.
Larger address space:
Global reachability and flexibility
Aggregation
Multihoming
Autoconfiguration
Plug-and-play
End-to-end without NAT
Renumbering
Mobility and security:
Mobile IP RFC-compliant
IPsec mandatory (or native) for IPv6
Simpler Header:
Routing efficiency
Performance and forwarding rate scalability
No broadcasts
No checksums
Extension headers
Flow Labels
Transition richness:
Dual stack
Translation
Questions we got from the teacher:
- How many possible addresses are at IPv6? How many times is this more compared to IPv4?
There are 3,4 * 10^38 addresses possible .
It's 8,5*10^28 more times compared to IPv4.
- Why are IPv6 addresses written in hexadecimal form?
Because the hexadecimal has got 16bit, the range is from 0-9
and from A-F. So you have more
possibilities.
- What is the possibility at IPv6, in difference to IPv4?
The header of IPv6 gives you the opportunity to involve
together chained extensions. So the actually header is
going to be shorter and the header of not used extensions isn't going
on.
Through those properties, the header of IPv6 can load faster.
- What is "Autoconfiguration" and "Renumbering"?
Autoconfiguration: In IPv6 the hosts are able to
configure their IPv6 address and their default
router settings.
Renumbering: In IPv6 networks can be renumbered. Routers
can send a new prefix to tell the devices to
regenerate their IP address.
- What is IPsec and which function has it at IPv6?
Internet Protocol Security
It protects the communication by authenticating and
encrypting every IP-packet of a session.
- What is used instead of a broadcast-message?
A multicast is used instead of a broadcast-message.
- How is the transition of IPv4 to IPv6 effected?
The transition takes place through tunneling.
- What happens at the interface of a Cisco-Router, if a IPv6 address will be activated?
