v6 Vertex – A Brief Explanation of IPv6 Address Types ITdojo’s v6 Vertex is an ever-expanding set of quick tips and useful advice for using IPv6 in your network. People who have been using IPv4 for some time know that there are three basic address types that are commonly discussed: unicast, broadcast and multicast. When…
v6 Vertex – Quick Tips & Pointers for IPv6 Users ITdojo’s v6 Vertex is an ever-expanding set of quick tips and useful advice for using IPv6 in your network. As you begin to make use of IPv6 you will often wonder whether or not you are actually using the protocol and whether or not your…
v6 Vertex – Quick Tips & Pointers for IPv6 Users ITdojo’s v6 Vertex is an ever-expanding set of quick tips and useful advice for using IPv6 in your network. SSH use is daily and ubiquitous. In our increasingly mixed IPv4/IPv6 world we need to be conscious of the ways in which we are connecting (or…
We spotted this interesting IPv6 article this morning written by Angus Kidman at Lifehacker and wanted to share it with you. Here’s an excerpt: “We’ve known for decades that the available pool of IPv4 address was eventually going to dry up, but despite numerous warnings usage of its successor IPv6 is still minimal. Why haven’t…
Path MTU discovery (PMTUD) is far from a new concept to IT folk. A sending node sets the Don’t Fragment bit in its IPv4 header which is the nodes way of telling any router along the journey to the packet’s destination that it may not fragment the packet into smaller parts. The router, being an…
Because every interface on your system, physical or virtual, has a link local IPv6 address your system needs a little guidance as to which one to use when sending packets to link-local IPv6 addresses. From an IPv4 perspective this type of addressing is an alien concept. But to IPv6, it’s everyday life.
IPv6 has added many new words and ideas to the lexicon of IT professionals. One of the least expected: deprecate. The dictionary (dictionary.com) says that deprecate means “to express earnest disapproval of”, to “urge reasons against” or, oddly, “to pray for deliverance from”. In the IT world the world a thing being ‘deprecated’ is a…
In IPv6 there are four [tables | lists | data structures] used as part of the packet forwarding process (e.g. Neighbor Discovery and the Conceptual Sending Algorithm). They are: Neighbor Cache Destination Cache Prefix List Default Router List These data structures are currently defined by RFC 4861 (and previously by RFC 1970 and RFC 2461,…
Just last week (July 12, 2012), the Chief Information Officers Council released this updated version of the Roadmap Toward IPv6 Adoption for the Federal Government to help with the upcoming deadlines for September of 2012 and September 2014. It highlights the history as well as the government’s vision for IPv6. To read the original article…
June 8th, 2011 is World IPv6 Day! If you aren’t already running IPv6 this is as good a time as any to get your systems set up to play on the IPv6 Internet. Head over to the official World IPv6 Day web site and get going. http://worldipv6day.org/