Border Gateway Protocol (BGP): How the Internet’s Routing Protocol Works

Border Gateway Protocol (BGP) is a protocol that makes the Capital I Internet run. It is the fundamental system that Internet Service Providers (ISPs) and large networks use to exchange reachability information and ensure data finds its way across the complex web of networks making up the global Internet. This post will demystify how BGP … Read more

Problems with Borger Gateway Protocol (BGP)

Border Gateway Protocol (BGP) is the Internet’s dominant inter-domain routing protocol, and as such, it is a critical component of the Internet’s infrastructure. However, BGP, like any other technology, has flaws. The following are some of the most common BGP issues: Some of the above issues are being addressed with RPKI, Routing Registries, and MANRS, … Read more

Hurricane Electric Route Filtering Algorithm

Interconnection

The following is from http://routing.he.net/algorithm.html . This outlines the criteria HE.NET uses for filtering routes from peers and customers. This is the route filtering algorithm for customers and peers that have explicit filtering: 1. Attempt to find an as-set to use for this network.1.1 Inspect the aut-num for this ASN to see if we can … Read more

RPKI and misconceptions

After my blog post about Hurricane Electric and RPKi support, I was seeing some comments by folks that warrant some clarification. I put together a short midnight podcast on this.  To summarize1. route original validation is not the same as having ROA’S with your RIR2. If you have an ASN you should have a peering … Read more

Hurricane Electric now requires IRR and filters invalid RPKI

Interconnection

If you are a Hurricane Electric customer you may be receiving e-mails like the following: What does this mean for you as a service provider? If you use Hurricane Electric as transit or peer with them on an exchange you will need to have ROAs for your blocksand have routing registry objects. I did a … Read more

A secure BGP routing infrastructure using RPKI

This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this content, you must be a member of Justin’s Patreon Unlock with PatreonAlready a qualifying Patreon … Read more