--- title: Case Study: BGP Routing Policy « ipSpace.net blog description: A pointer to a detailed real-world case study of BGP routing policy as implemented by IPng Networks, authored by Pim van Pelt. The case study is notable for... canonical: https://daily.dev/posts/case-study-bgp-routing-policy-ipspace-net-blog-zpn6e0p1u twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Case Study: BGP Routing Policy « ipSpace.net blog | daily.dev og:description: A pointer to a detailed real-world case study of BGP routing policy as implemented by IPng Networks, authored by Pim van Pelt. The case study is notable for... og:url: https://daily.dev/posts/case-study-bgp-routing-policy-ipspace-net-blog-zpn6e0p1u og:image: https://api.daily.dev/og/posts/ZpN6E0P1U.png og:image:alt: Case Study: BGP Routing Policy « ipSpace.net blog og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Case Study: BGP Routing Policy « ipSpace.net blog **[ipSpace.net Blog](https://daily.dev/sources/ipspace)** · 1 min read · 0 upvotes · 0 comments ## Summary A pointer to a detailed real-world case study of BGP routing policy as implemented by IPng Networks, authored by Pim van Pelt. The case study is notable for its transparency — ISPs rarely share their routing configurations — and for using the Bird2 configuration language, which resembles a programming language, in contrast to traditional vendor route-maps. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What does a real ISP BGP routing policy look like in Bird2 configuration? IPng Networks published a detailed breakdown of their BGP routing policy using Bird2, a routing daemon whose configuration language resembles a general-purpose programming language. This contrasts with traditional vendor route-maps, which are considered more opaque and limited. The case study is rare because most ISPs treat their routing configurations as proprietary. _Network engineers building or auditing BGP policy at scale track real-world ISP examples on daily.dev._ ## Similar posts on daily.dev - [BGP route policies: Top 3 use cases by customer demand](https://daily.dev/posts/bgp-route-policies-top-3-use-cases-by-customer-demand-3wr4btbgi) · Google Cloud · 0 upvotes · 0 comments - [BGP-Free Network Core with SRv6 « ipSpace.net blog](https://daily.dev/posts/bgp-free-network-core-with-srv6-ipspace-net-blog-9bbn88wub) · ipSpace.net Blog · 0 upvotes · 0 comments - [BGP-Free Core with SR-MPLS « ipSpace.net blog](https://daily.dev/posts/bgp-free-core-with-sr-mpls-ipspace-net-blog-h7kronzy3) · ipSpace.net Blog · 0 upvotes · 0 comments --- Tags: [#networking](https://daily.dev/tags/networking), [#bgp](https://daily.dev/tags/bgp) [View this post on daily.dev](https://daily.dev/posts/case-study-bgp-routing-policy-ipspace-net-blog-zpn6e0p1u) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Case Study: BGP Routing Policy « ipSpace.net blog","url":"https://daily.dev/posts/case-study-bgp-routing-policy-ipspace-net-blog-zpn6e0p1u","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/case-study-bgp-routing-policy-ipspace-net-blog-zpn6e0p1u"},"datePublished":"2026-08-11T08:52:51.524Z","dateModified":"2026-08-11T09:12:01.274Z","description":"A pointer to a detailed real-world case study of BGP routing policy as implemented by IPng Networks, authored by Pim van Pelt. The case study is notable for...","image":"https://media.daily.dev/image/upload/s--foaA6JGU--/f_auto/v1722860399/public/Placeholder%2004","thumbnailUrl":"https://media.daily.dev/image/upload/s--foaA6JGU--/f_auto/v1722860399/public/Placeholder%2004","isAccessibleForFree":true,"articleSection":"ipSpace.net Blog","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"ipSpace.net Blog","logo":"https://media.daily.dev/image/upload/s--xS7E82MT--/f_auto,q_auto/v1786438303/logos/ipspace?_a=BAMAMicg0","url":"https://daily.dev/sources/ipspace"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/case-study-bgp-routing-policy-ipspace-net-blog-zpn6e0p1u","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"networking,bgp","timeRequired":"PT1M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"ipSpace.net Blog","item":"https://daily.dev/sources/ipspace"},{"@type":"ListItem","position":3,"name":"Case Study: BGP Routing Policy « ipSpace.net blog"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/case-study-bgp-routing-policy-ipspace-net-blog-zpn6e0p1u#faq","mainEntity":[{"@type":"Question","name":"What does a real ISP BGP routing policy look like in Bird2 configuration?","acceptedAnswer":{"@type":"Answer","text":"IPng Networks published a detailed breakdown of their BGP routing policy using Bird2, a routing daemon whose configuration language resembles a general-purpose programming language. This contrasts with traditional vendor route-maps, which are considered more opaque and limited. The case study is rare because most ISPs treat their routing configurations as proprietary. Network engineers building or auditing BGP policy at scale track real-world ISP examples on daily.dev."}}]} ```