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Cisco Ccnp / Bsci Exam Tutorial: Ip Version 6 Zero Compression 

BSCI exam success is all part to become a, and part of the success is now studying the basic principles of IP Version 6, or IPv6. Among the most difficult areas of learning IPv6 principles is the radically different addressing scheme that IPv6 uses in comparison with IPv4. Just look at these sample addresses: 

Typical IPv4 address: 129.14.12.200 

Common IPv6 address: 1029:9183:81AE:0000:0000:0AC1:2143:019B 

IPv6 isn't particularly just tacking two more octets onto an IPv4 target, as you can see! 

I have not met a lot of networkers who enjoy typing, specially figures. You'll be happy to know there are several rules that will reduce these details somewhat, and it's a very good idea to be fluent with these rules for your exam. 

You remember from your CCNA reports that there surely is no difference between an letter and lower-case letter in hexadecimal. That is one of three basic rules whenever using IPv6 addressing you'll need to understand. The other factors deal with most of the zeroes you'll encounter in IPv6 details! One of these simple policies may be the concept of zero compression. 

The rule of zero compression states when a target contains consecutive fields of zeroes, they could be expressed with two colons. It doesn't matter if you have two fields or ten, colons can be simply typed two by you and that may represent them all. The important thing here's as possible only do this once within an IPv6 address. This really is known as zero pressure. Listed here is an example: 

Initial format: 1234:1234:0000:0000:0000:0000:3456:3434 

Using zero compression: 1234:1234::3456:3434 

Again, you must understand that you can only just try this once in a IPv6 address expression. 

What if you can find zeroes in the address that do not quite fit this concept? The following element of our IPv6 guide can handle leading zero retention, yet another tool you need to use to shorten these long, long handles!