--- title: IP and CLNP « ipSpace.net blog | daily.dev description: A video comparing TCP/IP and CLNP (Connectionless Network Protocol), two fundamentally different network-layer protocol families from the early 1990s. While... canonical: https://daily.dev/posts/ip-and-clnp-ipspace-net-blog-9ctw0cjhs twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: IP and CLNP « ipSpace.net blog | daily.dev og:description: A video comparing TCP/IP and CLNP (Connectionless Network Protocol), two fundamentally different network-layer protocol families from the early 1990s. While... og:url: https://daily.dev/posts/ip-and-clnp-ipspace-net-blog-9ctw0cjhs og:image: https://api.daily.dev/og/posts/9CTW0cJHS.png og:image:alt: IP and CLNP « 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. # IP and CLNP « ipSpace.net blog **[ipSpace.net Blog](https://daily.dev/sources/ipspace)** · 1 min read · 0 upvotes · 0 comments ## Summary A video comparing TCP/IP and CLNP (Connectionless Network Protocol), two fundamentally different network-layer protocol families from the early 1990s. While CLNP is nearly extinct today, its principles are being reinvented in modern IPv6-based layer-3-only data center fabrics, making historical knowledge of it still relevant for network engineers. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is CLNP and how does it differ from TCP/IP at the network layer? CLNP (Connectionless Network Protocol) is an OSI network-layer protocol that evolved using a fundamentally different set of design principles than TCP/IP. The two differ in their addressing schemes and forwarding philosophies. CLNP's principles, though the protocol itself is nearly extinct, have resurfaced in modern IPv6-based layer-3-only data center fabric designs. _Network engineers revisiting protocol history for modern fabric design find the relevant comparisons on daily.dev._ ## Similar posts on daily.dev - [The world in which IPv6 was a good design](https://daily.dev/posts/the-world-in-which-ipv6-was-a-good-design-tj3i8ov0s) · Hacker News · 0 upvotes · 0 comments - [Conversation: The Self-Improving Network Protocol](https://daily.dev/posts/conversation-the-self-improving-network-protocol-bq5d7fddo) · ElixirStatus · 1 upvotes · 0 comments - [Computer Networks Explained: The Complete Guide](https://daily.dev/posts/computer-networks-explained-the-complete-guide-uozado4ud) · Medium · 0 upvotes · 0 comments - [misc/why6why.md at main · becarpenter/misc](https://daily.dev/posts/misc-why6why-md-at-main-becarpenter-misc-vdnnmpiyy) · Lobsters · 0 upvotes · 0 comments --- [View this post on daily.dev](https://daily.dev/posts/ip-and-clnp-ipspace-net-blog-9ctw0cjhs) ```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":"IP and CLNP « ipSpace.net blog","url":"https://daily.dev/posts/ip-and-clnp-ipspace-net-blog-9ctw0cjhs","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/ip-and-clnp-ipspace-net-blog-9ctw0cjhs"},"datePublished":"2026-08-11T08:53:56.706Z","dateModified":"2026-08-11T09:04:43.570Z","description":"A video comparing TCP/IP and CLNP (Connectionless Network Protocol), two fundamentally different network-layer protocol families from the early 1990s. 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