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Posts Tagged ‘ipv6 address’

Exploring IPv6: A New IPv6 Tutorial

IPv6 is making its way into more and more networks. While the worlds largest AS’ were the first to feel the IPv4 crunch and start deploying IPv6, these days any network with any growth at all is forced to pay attention. This means that knowing at least the basics of IPv6 is becoming more and more of a […]

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IPv6 Security Myth #8: It Supports IPv6

Most of our IPv6 Security Myths are general notions, often passed on unwittingly between colleagues, friends, conference attendees, and others. Today’s myth is one that most often comes specifically from your vendors or suppliers. Whether it’s a hardware manufacturer, software developer, or Internet Service Provider (ISP), this myth is all about trust, but verify. Myth: […]

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IPv6 Security Myth #7: 96 More Bits, No Magic

This week’s myth is interesting because if we weren’t talking security it wouldn’t be a myth. Say what? The phrase “96 more bits, no magic” is basically a way of saying that IPv6 is just like IPv4, with longer addresses. From a pure routing and switching perspective, this is quite accurate. OSPF, IS-IS, and BGP […]

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Introducing IPv6 | IPv6 Headers

The beauty of the IPv6 header is that it has been streamlined and contains only those pieces of information that are necessary on every IPv6 packet. All optional IP information is encoded in extension headers, which are added to packets between the standard IPv6 header and the upper-layer header.

Introducing IPv6 | IPv6 Headers is a post from don't panic – One Network Architect's View of Life, the Internet, and Everything.


Introducing IPv6 | Classifying IPv6 Addresses

As with IPv4, an IPv6 address serves as an identifier for an interface or group of interfaces. Also like IPv4, IPv6 addresses come in several types, based on how they represent those interfaces. IPv6 has three types of addresses. This post covers all three, plus some special purpose addresses as well.

Introducing IPv6 | Classifying IPv6 Addresses is a post from don't panic – One Network Architect's View of Life, the Internet, and Everything.


Introducing IPv6 | Understanding IPv6 Addresses

The primary difference between IPv4 and IPv6 addresses is length. IPv4 addresses are 32 bits long and IPv6 addresses are 128 bits long. This means that an IPv4 address is made up of 32 1s and 0s while an IPv6 address is made up of 128 of them – 128 binary digits. This massive length forces IPv6 addresses to be written using a different notation than IPv4 addresses and thus makes them very easy to distinguish from IPv4 addresses.

Introducing IPv6 | Understanding IPv6 Addresses is a post from don't panic – One Network Architect's View of Life, the Internet, and Everything.