If you are using Internet or almost any computer network you will likely using IPv4 packets. IPv4 uses 32-bit source and destination address fields. We are actually running out of addresses but have ...

In addition to IPv4 (often written as just IP), there is IP version 6 (IPv6). IPv6 was developed as IPng (“IP:The Next Generation” because the developers were supposedly fans of the TV show “Star Trek ...

IPv6 is a powerful enhancement to IPv4 with features that better suit current and foreseeable network demands, including the following: IPv6 increases the number of address bits by a factor of 4, from ...

In “automatic” tunneling, hybrid IPv4/IPv6 addresses are created by extending 32-bit IPv4 addresses to 128 bits by adding leading zeros. IPv6 packets are encapsulated within IPv4 headers, so that one ...

The IPv6 transition in your organization, more likely than not, involves bringing IPv6 into a mix that also includes IPv4. Here’s a look at what that means and how to make it work. The original title ...

We just saw that the mask determines where the boundary between the network and host portions of the IP address lies. This boundary is important: If it is set too far to the right, there are lots of ...

Check out Denise Donohue’s blog. More Cisco Press book chapters from new and classic Cisco Press books. Of these, many capabilities have been backported to IPv4. The primary adoption of IPv6 will be ...

In the early 1990s, internet engineers sounded the alarm: the pool of numeric addresses that identify every device online was not infinite. IPv4, the fourth version of the Internet Protocol, used ...