--- title: BGP-Free Core with SR-MPLS « ipSpace.net blog | daily.dev description: A hands-on lab demonstrates building a BGP-free core using SR-MPLS as a drop-in replacement for LDP, based on a scenario from the ITNOG10 Segment Routing... canonical: https://daily.dev/posts/bgp-free-core-with-sr-mpls-ipspace-net-blog-h7kronzy3 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: BGP-Free Core with SR-MPLS « ipSpace.net blog | daily.dev og:description: A hands-on lab demonstrates building a BGP-free core using SR-MPLS as a drop-in replacement for LDP, based on a scenario from the ITNOG10 Segment Routing... og:url: https://daily.dev/posts/bgp-free-core-with-sr-mpls-ipspace-net-blog-h7kronzy3 og:image: https://api.daily.dev/og/posts/h7krONzY3.png og:image:alt: BGP-Free Core with SR-MPLS « 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. # BGP-Free Core with SR-MPLS « ipSpace.net blog **[ipSpace.net Blog](https://daily.dev/sources/ipspace)** · 3 min read · 0 upvotes · 0 comments ## Summary A hands-on lab demonstrates building a BGP-free core using SR-MPLS as a drop-in replacement for LDP, based on a scenario from the ITNOG10 Segment Routing workshop. The walkthrough covers a netlab topology file using groups and link groups to configure a core router (IS-IS + SR), edge PE routers (IS-IS, BGP, SR), and Linux host containers. It shows BGP routes on PE routers carrying SR-MPLS-derived labels, and verifies end-to-end connectivity between hosts even though the core P router has no BGP routes in its table. Instructions are given for running the lab via GitHub Codespaces with Arista cEOS containers. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Can SR-MPLS replace LDP in a BGP-free core network without other changes? Yes, SR-MPLS works as a drop-in replacement for LDP or RSVP-based MPLS control planes in a BGP-free transport core. The core (P) router runs IS-IS and SR-MPLS only, while edge (PE) routers run IS-IS, BGP, and SR-MPLS, attaching SR-MPLS-derived labels to BGP routes so traffic forwards end-to-end even though the P router has no BGP routes in its table. _Explore the netlab-based BGP-free core lab setup and configuration details on daily.dev for hands-on segment routing practice._ ## Similar posts on daily.dev - [Multivendor SR-MPLS « ipSpace.net blog](https://daily.dev/posts/multivendor-sr-mpls-ipspace-net-blog-qekokwduk) · 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/bgp-free-core-with-sr-mpls-ipspace-net-blog-h7kronzy3) ```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":"BGP-Free Core with SR-MPLS « ipSpace.net blog","url":"https://daily.dev/posts/bgp-free-core-with-sr-mpls-ipspace-net-blog-h7kronzy3","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/bgp-free-core-with-sr-mpls-ipspace-net-blog-h7kronzy3"},"datePublished":"2026-09-03T05:35:32.230Z","dateModified":"2026-09-03T06:24:08.134Z","description":"A hands-on lab demonstrates building a BGP-free core using SR-MPLS as a drop-in replacement for LDP, based on a scenario from the ITNOG10 Segment Routing...","image":"https://media.daily.dev/image/upload/s--qPvKM23u--/f_auto/v1722860399/public/Placeholder%2009","thumbnailUrl":"https://media.daily.dev/image/upload/s--qPvKM23u--/f_auto/v1722860399/public/Placeholder%2009","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/bgp-free-core-with-sr-mpls-ipspace-net-blog-h7kronzy3","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"networking,bgp","timeRequired":"PT3M"} {"@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":"BGP-Free Core with SR-MPLS « ipSpace.net blog"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/bgp-free-core-with-sr-mpls-ipspace-net-blog-h7kronzy3#faq","mainEntity":[{"@type":"Question","name":"Can SR-MPLS replace LDP in a BGP-free core network without other changes?","acceptedAnswer":{"@type":"Answer","text":"Yes, SR-MPLS works as a drop-in replacement for LDP or RSVP-based MPLS control planes in a BGP-free transport core. 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