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11 IPV6 Compression Rules and Representation
2013

 An article by Waqas Azam      No Comments (http://www.w7cloud.com/ipv6­compression­rules­and­
Follow Us on Twitter!
representation/#respond)
(http://twitter.com/w7cloud)

IPv6 address is of 128 bits and represented in eight octets of 16 bits. IPv6 addresses are in hexadecimal form, so
each digit is of four bits, IPv6 address’s consist of possible digits are 0 1 2 3 4 5 6 7 8 9 A B C D E F.

Representation of all hexadecimal number/digits in binary form is as follows:

Hexadecimal # Binary Representation
0 0000
1 0001
2 0010
3 0011
4 0100
5 0101
6 0110
7 0111
8 1000
9 1001
A 1010
B 1011
C 1100
D 1101
E 1110
F 1111

Example of IPv6 address:

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This is a simple example of IPv6 address, you can see in below figure IPv6 address have eight hextets/parts and
each hextet/part consist of 4 digits and of 16bits, while every digits is of 4bits that you can find from above table. Download1700c Gns3 IOS images for
Router
(http://www.w7cloud.com/download1700c­
gns3­ios­images­for­router/)

MPLS LAB Gns3 Configuring MPLS
Cloud Providers with VPN, BGP
(http://www.w7cloud.com/mpls­cloud­
configuration­lab­gns3/)

 (http://www.w7cloud.com/wp­ MobaXterm GNS3 How to use Moba­
content/uploads/2013/08/IPv6­address.png) Xterm as a Gns3 Terminal
(http://www.w7cloud.com/mobaxterm­
IPv6 Compression rules gns3/)

IPv6 address consist of 8 hextets or parts which is normally difficult to remember, therefore there are some
compression method, using compression techniques you can represent IPv6 in more understandable and simple
way. These compression rules and methods are as follow:
TAGS
IPv6 Zero Compression

IPv6 Leading Zero Compression Active Directory
Both Zero and Leading zero compression (http://www.w7cloud.com/tag/active­
directory/) Android
 IPv6 Zero Compression (http://www.w7cloud.com/tag/android/)

In zero compression you can represent group of zeros by one double­colon (::) but you can perform this only once CCDA
in your IPv6 address, means if you have two group of zeros in your IPv6 address you can use the double­colon
only once. Review the example for better understanding. (http://www.w7cloud.com/tag/ccda/)
Original IPv6 address: certificate services
2001:1265:0000:0000:0AE4:0000:005B:06B0 (http://www.w7cloud.com/tag/certificate­
services/) CISCO
IPv6 address with zero compression:
(http://www.w7cloud.com/tag/cisco/)
2001:1265::0AE4:0000:005B:06B0 cloud computing
(http://www.w7cloud.com/tag/cloud­
 IPv6 Leading Zero Compression computing/) DNS
(http://www.w7cloud.com/tag/dns/)   ethernet
In leading zero compression you can eliminate the starting zero(s) from any hextex. If you have all zero in a hextex
(http://www.w7cloud.com/tag/ethernet/)
you can represent this hextex with one zero.
facebook
Original IPv6 address: (http://www.w7cloud.com/tag/facebook/)
games
2001:1265:0000:0000:0AE4:0000:005B:06B0
(http://www.w7cloud.com/tag/games/)
IPv6 address with Leading zero compression:
gns3
2001:1265:0:0:AE4:0:5B:6B0 (http://www.w7cloud.com/tag/gns3/)
gns3 ios
 (http://www.w7cloud.com/tag/gns3­ios/)
 Both Zero and Leading zero compression GPO
(http://www.w7cloud.com/tag/gpo/)
You can use the both zero and leading zero compression together by following the rules of these compression
Inter­controller Roaming
techniques.
(http://www.w7cloud.com/tag/inter­controller­
roaming/)   ios (http://www.w7cloud.com/tag/ios/)

IP

Free Trading (http://www.w7cloud.com/tag/ip/)
IPv6
Signals (http://www.w7cloud.com/tag/ipv6/)
LAN (http://www.w7cloud.com/tag/lan/)

Receive a trade
18 signals a day Network Design
(http://www.w7cloud.com/tag/network
design/) networking quiz
(http://www.w7cloud.com/tag/networking­
Original IPv6 address:
networking
quiz/) 
2001:1265:0000:0000:0AE4:0000:005B:06B0

Both compression: terms
2001:1265::AE4:0:5B:6B0
(http://www.w7cloud.com/tag/netwo
 

IPv6 compression Rule Example:
terms/) Network model
(http://www.w7cloud.com/tag/network­
Orignal IPV6 address:                                    2E21:0000:0000:0000:0011:0002:00C3:00A4
model/) network principles
IPv6 Leading zero compression:                  2E21:0:0:0:11:2:C3:A4
(http://www.w7cloud.com/tag/network­
IPv6 Zero Compression:                              2E21:0000::0011:0002:00C3:00A4
principles/) Network Security
Both:                                                                2E21::11:2:C3:A4 (http://www.w7cloud.com/tag/network­
  security/) OSI model
  (http://www.w7cloud.com/tag/osi­model/)
owncloud
 
(http://www.w7cloud.com/tag/owncloud/)
PPDIOO
Tags: CCDA (http://www.w7cloud.com/tag/ccda/), IP (http://www.w7cloud.com/tag/ip/), IPv6 (http://www.w7cloud.com/tag/ppdioo/)
(http://www.w7cloud.com/tag/ipv6/), Network Design (http://www.w7cloud.com/tag/network­design/), networking
Quiz
terms (http://www.w7cloud.com/tag/networking­terms/)
(http://www.w7cloud.com/tag/quiz/)
roaming
Did you enjoy this article? Share it!    (http://twitter.com/home/?status=IPV6 (http://www.w7cloud.com/tag/roaming/)
Compression Rules and Representation : http://www.w7cloud.com/ipv6­compression­rules­and­ Routing Protocols
representation/)   (http://www.stumbleupon.com/submit?url=http://www.w7cloud.com/ipv6­
(http://www.w7cloud.com/tag/routing­
compression­rules­and­representation/&title=IPV6 Compression Rules and Representation)
protocols/) server 2008
 (http://digg.com/submit?phase=2&url=http://www.w7cloud.com/ipv6­compression­rules­
(http://www.w7cloud.com/tag/server­
and­representation/&title=IPV6 Compression Rules and Representation)  2008/) Server 2008 R2
(http://del.icio.us/post?url=http://www.w7cloud.com/ipv6­compression­rules­and­ (http://www.w7cloud.com/tag/server­
representation/&title=IPV6 Compression Rules and Representation)  2008­r2/) Switch network
(http://www.facebook.com/sharer.php?u=http://www.w7cloud.com/ipv6­compression­rules­and­ (http://www.w7cloud.com/tag/switch­
representation/&t=IPV6 Compression Rules and Representation)
network/) tech articles

(http://www.w7cloud.com/tag/tech­
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