--- title: Layer-3 WAN Handoff (L3Out) in VXLAN/EVPN Fabrics «... description: A deep dive into Layer-3 WAN handoff (L3Out) options for VXLAN/EVPN fabrics across multiple locations, based on input from Cisco's Lukas Krattiger. Three main... canonical: https://daily.dev/posts/layer-3-wan-handoff-l3out-in-vxlan-evpn-fabrics-ipspace-net-blog-cuynrc09z twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Layer-3 WAN Handoff (L3Out) in VXLAN/EVPN Fabrics « ipSpace.net blog | daily.dev og:description: A deep dive into Layer-3 WAN handoff (L3Out) options for VXLAN/EVPN fabrics across multiple locations, based on input from Cisco's Lukas Krattiger. Three main... og:url: https://daily.dev/posts/layer-3-wan-handoff-l3out-in-vxlan-evpn-fabrics-ipspace-net-blog-cuynrc09z og:image: https://api.daily.dev/og/posts/CuYNRc09z.png og:image:alt: Layer-3 WAN Handoff (L3Out) in VXLAN/EVPN Fabrics « 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. # Layer-3 WAN Handoff (L3Out) in VXLAN/EVPN Fabrics « ipSpace.net blog **[ipSpace.net Blog](https://daily.dev/sources/ipspace)** · 4 min read · 0 upvotes · 0 comments ## Summary A deep dive into Layer-3 WAN handoff (L3Out) options for VXLAN/EVPN fabrics across multiple locations, based on input from Cisco's Lukas Krattiger. Three main approaches are covered: VXLAN-to-IP (Inter-AS Option A with per-VRF eBGP), VXLAN-to-VXLAN using a Multi-Site Border Gateway (BGW) that handles EVPN re-origination and RMAC community rewriting, and VXLAN-to-MPLS/SR/SRv6 using L3VPN (VPNv4/VPNv6). The post explains why simply changing the BGP next hop is insufficient for VXLAN-to-VXLAN — the RMAC extended community must also be updated. A follow-up covering Arista's approach is referenced. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Why is changing the BGP next hop not enough for VXLAN-to-VXLAN routing between EVPN sites? EVPN routes carry an RMAC extended community that encodes the inner destination MAC address used for VXLAN encapsulation. When a border node re-originates a route toward a remote domain, it must update both the BGP next hop and the RMAC to point to itself — not just the next hop. A Multi-Site Border Gateway (BGW) performs this EVPN re-origination correctly; plain VXLAN RIOT on the data plane alone is insufficient. _Engineers stitching EVPN domains together track exactly these re-origination details on daily.dev._ ### What are the three options for L3 WAN handoff in a VXLAN/EVPN fabric? The three options are: (1) VXLAN-to-IP using Inter-AS Option A, where IP prefixes are imported into per-VRF sub-interfaces with eBGP peering toward the WAN; (2) VXLAN-to-VXLAN using a Multi-Site Border Gateway that performs EVPN re-origination including RMAC rewriting; and (3) VXLAN-to-MPLS/SR/SRv6 using L3VPN (VPNv4/VPNv6) with LDP, SR, or BGP-LU as the underlay. _Network architects choosing between these handoff models find peer discussions and vendor updates on daily.dev._ ## Similar posts on daily.dev - [EVPN with SR-MPLS Core « ipSpace.net blog](https://daily.dev/posts/evpn-with-sr-mpls-core-ipspace-net-blog-taobtibzc) · ipSpace.net Blog · 0 upvotes · 0 comments --- Tags: [#bgp](https://daily.dev/tags/bgp), [#evpn](https://daily.dev/tags/evpn), [#networking](https://daily.dev/tags/networking) [View this post on daily.dev](https://daily.dev/posts/layer-3-wan-handoff-l3out-in-vxlan-evpn-fabrics-ipspace-net-blog-cuynrc09z) ```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":"Layer-3 WAN Handoff (L3Out) in VXLAN/EVPN Fabrics « ipSpace.net blog","url":"https://daily.dev/posts/layer-3-wan-handoff-l3out-in-vxlan-evpn-fabrics-ipspace-net-blog-cuynrc09z","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/layer-3-wan-handoff-l3out-in-vxlan-evpn-fabrics-ipspace-net-blog-cuynrc09z"},"datePublished":"2026-08-11T08:54:49.648Z","dateModified":"2026-10-14T02:29:46.306Z","description":"A deep dive into Layer-3 WAN handoff (L3Out) options for VXLAN/EVPN fabrics across multiple locations, based on input from Cisco's Lukas Krattiger. 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