IPv6- Blocks, Slashes and Big Numbers







www.softlayer.com ≡ http We understand that it is easy to get lost in a sea of numbers when you start talking about IPv4 and IPv6 address space. So, Kevin Hazard, SoftLayer's resident Social Media Ninja and PHIL give you a better picture about the differences between IPv4 and IPv6, and we at thought explaining in a visualized format would be easier on you! With the exhaustion of IPv4 address space and the big push toward IPv6, everyone's talking about address blocks, usage justification and dual stack compatibility, but all of those conversations presuppose a certain understanding of why IP addresses are the way they are. Here is a basic overview of the information. IPv4 addresses are 32-bit while IPv6 addresses are 128-bit. Customers can get a /64 allocation of IPv6 addresses provisioned to every one of their SoftLayer servers. A /64 block of IPv6 addresses contains 18446744073709551616 distinct addresses. The entire IPv4 address space is 4294967296 distinct addresses. If you have any questions about IP address space, please leave a comment for us here or send us a message on Twitter: twitter.com www.softlayer.com ≡ http



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