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The interdomain routing fabric of the Internet is a somewhat chaotic space. It is not a “centrally managed” space by any means. There is no single entity that is responsible for the Internet’s routing environment. No permissions are required to join, and no notice required to leave. A network doesn’t…
The internet is held together by the Border Gateway Protocol (BGP). It’s an “interesting” protocol in many ways. Each BGP speaker uses a reliable transport protocol to send local reachability information to its adjacent peers. The inference is once a BGP neighbour has been informed about a new item, whether…
The first part of this annual report on BGP for the year 2024 looked at the size of the routing table and some projections of table growth for both IPv4 and IPv6. However, the scalability of BGP as the Internet’s routing protocol is not just dependant on the number of…
At the start of each year, it’s been my habit to report on the behaviour of the Internet’s inter-domain routing system over the previous 12 months, looking in some detail at some metrics from the routing system that can show the essential shape and behaviour of the underlying interconnection fabric…
There was, as usual, a lot of work in the area of Inter-Domain Routing at IETF 120. There is the long-standing Inter-Domain Routing (IDR) working group, looking at the specification o0f the BGP protocol and its refinements for particular deployment scenarios such as 5G networks, or certain service quality assurance,…
RIPE 88 was held in May 2024 at Krakow, Poland. Here’s as summary of some of the routing topics that were presented at that meeting that I found to be of interest. Bgpipe – A BGP Reverse Proxy Observing and measuring the dynamic behaviour of BGP has used a small…
The first part of this annual report looked at the size of the routing table and looked at some projections of its growth for both IPv4 and IPv6. However, the scalability of BGP as the Internet’s routing protocol is not just dependant on the number of prefixes carried in the…
At the start of each year, I’ve been reporting on the behaviour of the Internet’s inter-domain routing system over the previous 12 months, looking in some detail at some metrics from the routing system that can show the essential shape and behaviour of the underlying interconnection fabric of the Internet.…
This is a report on a feasibility study looking at an alternative trust anchor structure for the Resource Public Key Infrastructure (RPKI). Background In the early days of the Internet in the 1980’s when the Internet address plan used the Class A, B and C address structure, it appears that…
There was a somewhat unfortunate outage for a major communications service provider in Australia, Optus, in mid-November. It appears that one of their peer BGP networks mistakenly advertised a very large route collection to the Optus BGP network which caused the routers to malfunction in some manner. The problem was…
