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The DNS Operations, Analysis, and Research Centre (DNS-OARC) convened OARC-35 at the start of May. Here’s some thoughts on a few presentations at that meeting that caught my attention. TTL Snooping with the DNS These days it seems that the term “the digital economy” is synonymous with “the surveillance economy”.…
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 world of IPv4 addresses is a relatively obscure backwater of the Internet. All that drama of IPv4 address exhaustion happened with little in the way of mainstream media attention. So it came as a bit of a surprise to see a headline in the Washington Post about IPv4 addresses.…
Committees should never attempt to define technology There always seems to be a point in the process where there is a choice between two quite different options, and there is no convincing case that one choice is outstandingly better than the other. Committees find it terribly hard to decide at…
IETF 110 was held virtually in March 2020. These are some notes I took on the topic of current activities in the area of the Domain Name System and its continuing refinement at IETF 110. The amount of activity in the DNS in the IETF seems to be growing every…
IETF 110 was held virtually in March 2020. These are some notes I took on the topic of current research activities in the area of transport protocol flow control at the meeting of the Internet Congestion Control Research Group at that meeting. HPCC+: High Precision Congestion Control In the early…
There are a number of parts to the current framework that we’re using to improve routing security on the Internet. Prefix holders should generate validly signed Route Origination Attestations (ROAs) and have them published, Network operators should maintain a current local cache of these signed objects and use then to…
For many years the consuming topic in DNS circles was that of the names themselves. If you wind the clock back twenty years or so you would find much discussion about the nature of the Internet’s name space. Why were there both generic top-level labels and two-letter country codes. If…
As the pandemic continues, the network operational community continues to meet online. NANOG held its 81st meeting on February 8 and 9, and these are my notes from some of the presentations at that meeting. A Brief History of Router Architecture Ethernet, developed in 1973 at Xerox PARC, was a…
It’s an interesting topic of speculation to think about what form of network architecture would we be using if we were start afresh using today’s world of scalable content and service distribution as the starting point. Like the “clean slate” discussions of over a decade ago, if we were to…
