--- title: My two ISPs don't know about each other, and my router... description: Running two ISPs simultaneously using a dual-WAN router (TP-Link ER605 with Omada controller) eliminates single points of failure for home networks and... canonical: https://daily.dev/posts/my-two-isps-don-t-know-about-each-other-and-my-router-makes-that-fine-ddxwunokb twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: My two ISPs don't know about each other, and my router makes that fine | daily.dev og:description: Running two ISPs simultaneously using a dual-WAN router (TP-Link ER605 with Omada controller) eliminates single points of failure for home networks and... og:url: https://daily.dev/posts/my-two-isps-don-t-know-about-each-other-and-my-router-makes-that-fine-ddxwunokb og:image: https://api.daily.dev/og/posts/ddxWuNokb.png og:image:alt: My two ISPs don't know about each other, and my router makes that fine 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. # My two ISPs don't know about each other, and my router makes that fine **[XDA Developers](https://daily.dev/sources/xda-developers)** · 3 min read · 0 upvotes · 1 comments ## Summary Running two ISPs simultaneously using a dual-WAN router (TP-Link ER605 with Omada controller) eliminates single points of failure for home networks and homelabs. The setup uses load balancing in a 7:1 ratio matching the bandwidth difference between a 300Mbps primary and 40Mbps secondary connection. Automatic failover silently reroutes traffic when the primary ISP drops, keeping services reachable without manual intervention. The key insight is that dual-WAN doesn't combine speeds — it routes intelligently — and the real value is reliability and reduced operational overhead, not raw throughput. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Can a dual-WAN router combine two internet connections to double the bandwidth? No, a dual-WAN router cannot merge two connections to add their bandwidths together. It can only route traffic intelligently across both connections at once, sending different sessions over different ISPs, but each individual connection is still limited to its own speed. Load balancing distributes new sessions between links rather than combining their throughput. _Anyone weighing a dual-WAN setup's real capabilities can find grounded homelab networking write-ups on daily.dev._ ### How does automatic failover work in a dual-WAN home router setup? When the primary ISP connection drops, the gateway detects the failure and automatically shifts all traffic to the secondary connection without manual intervention. In one setup using a TP-Link ER605 with a 300Mbps primary and 40Mbps secondary line, this kept remote access and homelab services reachable during a primary ISP outage, with no noticeable disruption to video calls or downloads. _Homelab operators chasing better uptime can track real-world failover setups on daily.dev._ ## Community discussion Top comments from developers on daily.dev. **@trevorsuna** · 0 upvotes > This is the kind of homelab upgrade you stop noticing until one ISP goes down. Matching the load-balance ratio to line speeds and keeping failover automatic is a tidy setup. ## Similar posts on daily.dev - [I run two routers at home, and it's not for the reason you think](https://daily.dev/posts/i-run-two-routers-at-home-and-it-s-not-for-the-reason-you-think-ncrzwctj0) · XDA Developers · 0 upvotes · 0 comments - [I ran double NAT for two years without knowing it, and fixing it explained problems I'd blamed on everything else](https://daily.dev/posts/i-ran-double-nat-for-two-years-without-knowing-it-and-fixing-it-explained-problems-i-d-blamed-on-ev-oszktqcm5) · XDA Developers · 0 upvotes · 0 comments - [Adding a backup Internet WAN on my OPNsense Router](https://daily.dev/posts/adding-a-backup-internet-wan-on-my-opnsense-router-a7gbniplm) · Jeff Geerling · 1 upvotes · 0 comments - [This old Galaxy phone became my third WAN port, and it actually works](https://daily.dev/posts/this-old-galaxy-phone-became-my-third-wan-port-and-it-actually-works-ul7hztm05) · XDA Developers · 0 upvotes · 0 comments - [Home router recommendations](https://daily.dev/posts/home-router-recommendations-fiz92rk8j) · Lobsters · 0 upvotes · 0 comments --- Tags: [#networking](https://daily.dev/tags/networking), [#homelab](https://daily.dev/tags/homelab) [View this post on daily.dev](https://daily.dev/posts/my-two-isps-don-t-know-about-each-other-and-my-router-makes-that-fine-ddxwunokb) ```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":"My two ISPs don't know about each other, and my router makes that fine","url":"https://daily.dev/posts/my-two-isps-don-t-know-about-each-other-and-my-router-makes-that-fine-ddxwunokb","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/my-two-isps-don-t-know-about-each-other-and-my-router-makes-that-fine-ddxwunokb"},"datePublished":"2026-07-19T20:00:23.997Z","dateModified":"2026-09-13T21:05:59.108Z","description":"Running two ISPs simultaneously using a dual-WAN router (TP-Link ER605 with Omada controller) eliminates single points of failure for home networks and...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/2b6a4e36e00ecadcee75ab65d8bdb3dc?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/2b6a4e36e00ecadcee75ab65d8bdb3dc?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"XDA Developers","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":"XDA Developers","logo":"https://media.daily.dev/image/upload/s--kCg6yyAP--/f_auto,q_auto/v1774964407/logos/xda-developers?_a=BAMAMiWQ0","url":"https://daily.dev/sources/xda-developers"},"commentCount":1,"discussionUrl":"https://daily.dev/posts/my-two-isps-don-t-know-about-each-other-and-my-router-makes-that-fine-ddxwunokb","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":1}],"keywords":"networking,homelab","timeRequired":"PT3M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"XDA Developers","item":"https://daily.dev/sources/xda-developers"},{"@type":"ListItem","position":3,"name":"My two ISPs don't know about each other, and my router makes that fine"}]} {"@context":"https://schema.org","@type":"WebPage","@id":"https://daily.dev/posts/my-two-isps-don-t-know-about-each-other-and-my-router-makes-that-fine-ddxwunokb","comment":[{"@type":"Comment","text":"This is the kind of homelab upgrade you stop noticing until one ISP goes down. 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