MCTS 70-680: Internet Protocol Version 6 (IPv6)

• published: 20 Oct 2011
• views: 24530

The IPv6 protocol is the successor to IPv4 and will one day replace it as the default protocol used on the internet. This video looks at advantages of IPv6 and the different types of addresses that IPv6 uses. Advantages of IPv6 IPSec is now integrated into the protocol Better improvement for Multi-casting Better geographic lay out which reduces routing complexity Much larger address space IPv6 Address The basic IPv6 address uses 128bits compared with 32bit for IPv4. This gives approx. 2 to power 95 addresses for each person on the planet. Example of IPv6 addresses are 2001:4860:B002:0000:0000:0000:0000:0068 FE80:0000:0000:B1AC:F5CD:00BB:0000:674A In order to make IPv6 addresses easier to read, you can remove leading zeros in each block, for example 0000 can become 0 00AB can become AB In some cases you may have a lot of zeros in a row. When this occurs they can be reduced to :: This operation can only be perform one for example FE80:0000:0000:B1AC:F5CD:00BB:0000:674A can be reduced to the following FE80::B1AC:F5CD:00BB:0000:674A or FE80:0000:0000:B1AC:F5CD:00BB::674A but it can't be reduce twice to this FE80::B1AC:F5CD:00BB::674A (Not valid) Types of IPV6 addresses Unicast Is used for one to one communication. The packet is sent from the sender to the receiver. Multicast Is used for one to many communication. One packet is sent to many different computers or devices. Multicast addresses always start with FF Anycast Is one to one of many destinations. Generally one packet will be sent to the closest device that is offering that service. Think of it like leaving an airport and getting in a taxi and asking to be taken to the closest hotel. One packet goes to the closest of many dentations. Global Unicast These are public IP addresses that are registered an thus any router on the internet will route traffic to you for that address. The addresses always start with 2000 or 2001. Link Local Address Used only for local area network only. These addresses are always present on every network adapter and start with FE80. These addresses are used for neighbour discovery. Unique local address These are private IP addresses that can be allocated in your company any way that you want. They are not routable on the internet but can be routed inside your company any way that you want. These addresses start with FC00 or FD00 Loop Back Address This address is used for testing. All traffic sent to this address will be routed back to your locally adapter. This address is simply ::1 For a free IPv6 client go to http://gogonet.gogo6.com See http://YouTube.com/ITFreeTraining or http://itfreetraining.com for are always free training videos. This is only one video from the many free courses available on YouTube.