The Australian Network Operators’ Group, AUSNOG, just held its 19th meeting. Rather than simply relate the content of the presentations I’d like to take a few presentations and place them into a broader context to show how such topics fit today’s networked environment. Network Operations and Data Centres Perhaps unsurprisingly…| blabs
Most of today’s transport on the public Internet still uses TCP (and in this admittedly sweeping generalization I’ll include QUIC, as QUIC can be seen as an updated form of TCP that happens to use UDP as an encapsulation protocol). TCP does not operate at a fixed transmission rate and instead the protocol uses a feedback loop between the sender and receiver to maintain a suitable rate that makes efficient use of the network while avoiding driving the network into conditions of sustained o...| blabs
Background| blabs
Early models of packet networking used a hop-by-hop paradigm of control. Each intermediate device (a “router” in Internet parlance) would use a control loop with its adjacent neighbour and retransmit any frame that was not explicitly acknowledged as received by the neighbour. Such models were used by the X.25 protocol,…| blabs
The Internet Engineering Task Force (IETF) meets three times a year to work on Internet Standards and related operational practice documents. In July of 2025 the IETF met in Madrid (finally, and only after a number of thwarted mis-starts!) with more than a thousand folk in attendance through the week.…| blabs
The Internet Engineering Task Force (IETF) meets three times a year to work on Internet Standards and related operational practice documents. In July of 2025 the IETF met in Madrid (finally, and after a number of thwarted mis-starts!) with more than a thousand folk in attendance through the week.| blabs
Last month, in June 2025, I reported on our progress with the adoption of the QUIC transport protocol. Here I would like to look at the mechanisms used to trigger a client application (typically a browser) to connect to the server using the QUIC transport protocol.| blabs
Networks are typically built to provide certain services at an expected scale. The rationale for this focussed objective is entirely reasonable: to overachieve would be inefficient and costly. So, we build service infrastructure to a level of sufficient capability to meet expectations and no more. In ideal conditions this leads…| blabs
There has been a major change in the landscape of the internet over the past few years with the progressive introduction of the QUIC transport protocol. Here I’d like to look at where we are up to with the deployment of QUIC on the public Internet. But first, a review of the QUIC protocol.| blabs
The Internet is, as its name suggests, a network of networks. The glue that holds this together is the inter-domain routing protocol, BGP, or Border Gateway Protocol. BGP is a flooding protocol whose objective is to ensure that all the BGP speakers across the Internet see the same picture of reachable address prefixes. The paths of how to reach to each prefix is relative to each BGP speaker, so the paths contained in each local view of the Internet all differ to some extent, but the intention...| blabs