Should I use dual WAN?
James Stevens
Updated on February 26, 2026
Dual-WAN or multi-WAN routers give you reliable Internet at all times coupled with load balancing and security. They are most essential for those who are likely to get impacted even with short Internet outages and for those who want to combine the bandwidth of two or more providers.
What is dual WAN failover?
The concept of a Dual WAN failover was to have fail over if one Internet Service Provider (ISP) goes down. This is used for its capacity to let dual lines from various providers and types of datalines.
What is dual WAN Asus?
The AsusWRT firmware supports something called “Dual WAN” – an option to have two Internet channels connected. Apart from the dedicated Ethernet WAN port, you can either plug in a 3G USB modem, or use one of the 4 LAN ports for a second WAN.
What are dual WAN routers?
A Dual WAN Router features two WAN RJ45 ports that enable you to present multiple broadband connections through a single local network gateway for load balancing or failover. Some Dual ADSL Routers may require an external ADSL/VDSL modem to work in conjunction with the additional WAN port.
How dual WAN router works?
Dual-WAN and multi-WAN load balancing is where two or more Broadband connections (ADSL, Cable, Fibre etc) are connected to a dedicated load-balancing router’s WAN port and Internet traffic optimally managed across the WAN connections. This is called WAN failover/backup.
Why does my router have 2 WAN ports?
Router Dual WAN port Some routers come with dual WAN ports which allow you to connect two internet connections to your router. Depending on the router these connections can be used for load balancing (splitting the internet traffic between the two connections) or for failover.
How do I connect two routers to a WAN LAN?
Set the Internet Gateway of router 2 to router 1’s IP address. Connect the two routers using a wired connection from any of port 1-4 in router 1 to any of port 1-4 in router 2. You can use a Wireless Media Bridge or Powerline Ethernet Kit to create a wired connection. DO NOT use router 2’s WAN port.
