We would like to provide you with a better user experience. Please re-enable Javascript in your web browser.
One of the basic tools in network design is the so-called “stacked” protocol model. This model was developed in the late 1970s as part of a broader effort to develop general standards and methods of networking. In 1983, the efforts of the CCITT and ISO were merged to form The…
The Australian Domain Name Administration, AUDA, has recently published its quarterly report for the last quarter of 2020. The report contained the interesting snippet: “The rapid digitisation of our lives and economy – necessitated by COVID-19 – continued to underpin strong growth in .au registrations. New .au domains created in…
It’s now the season of virtual workshops, and without the overhead of time spent travelling to these events it’s been possible to participate in a number of these events all over the Internet in the space of a few days. This week I participated in a workshop on measurement of…
A “New IP” framework was proposed to the ITU last year . This framework envisages a resurgence of a network-centric view of communications architectures where application behaviours are moderated by network-managed control mechanisms. It’s not the first time that we’ve seen proposals to rethink the basic architecture of the Internet’s…
Time for another annual roundup from the world of IP addresses. Let’s see what has changed in the past 12 months in addressing the Internet and look at how IP address allocation information can inform us of the changing nature of the network itself. Back around 1992 the IETF gazed…
Packet switched networks benefit from buffers within the network’s switches. In the simplest case, if two packets arrive at a switch at the same time and are destined to the same output port, then one packet will need to wait in a buffer while the other packet is sent on,…
At the recent IEPG meeting in Montreal in July 2019 Joel Jaeggli of Fastly talked on the topic of the settings of the TCP Maximum Segment Size (MSS) field in TCP implementations. There has been a recent vulnerability published (described in CVE-2019-11477, 11478 and 11479) relating to the Linux TCP…
In June I participated in a workshop, organized by the Internet Architecture Board, on the topic of protocol design and effect, looking at the differences between initial design expectations and deployment realities. These are my impressions of the discussions that took place at this workshop. 1 – Case Studies In…
Quick UDP Internet Connection (QUIC) is a network protocol initially developed and deployed by Google, and now being standardized in the Internet Engineering Task Force. In this article we’ll take a quick tour of QUIC, looking at what goals influenced its design, and what implications QUIC might have on the…
Computers have always had clocks. Well maybe not clocks as you might think, but digital computers have always had oscillators, and if you hook the oscillator to a simple counter then you have a clock. The clock is not just there to tell the time, although it can do that,…
