On Fri, Mar 10, 2023 at 8:12 PM <p...@ymail.ne.jp> wrote: > Hello, > > > I have two DSL in family. One is main, another is backup. > > When the main DSL get outage, can debian system choose backup DSL as > gateway and keep internet not disconnected? If so, how to deploy it? >
You need a Router with two WAN ports! On a router I would configure two Static Routes one default router for the main DSL and one for the backup DSL that is weighted to a lower priority. This is known as surprisingly Weighted Static Routes. What are you currently using as a WAN router? You can use Debian as a router! You can configure two default Gateway's with the primary using a metric of 600 and the backup with a metric of 700. This will require two NICs. I do not recommend connecting to the Internet without at-least a WAN State-full Packet Inspection SPI Firewall Router. Tim > Thanks. > > Yong > -- ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system ⢿⡄⠘⠷⠚⠋⠀ https://www.debian.org/ ⠈⠳⣄⠀⠀
