how can i dynamically change the gateway?

[Brandon Zhi]

Hi,
        I'm trying to understand the thing that you want to do. So if the
GW is down, then babel is down too. Maybe you could announce 0.0.0.0/0
by babel when babel is down, the GW will change.




On Thu, 1 Sept 2022 at 22:28, Michele Salerno <mikysal78 at gmail.com> wrote:

> Hi, I have this script that configures routes for me between different
> routers and servers.
> I have a few routers that have down in the wan and connect with the mesh
> network.
> How can I dynamically change the gateway?
> Example: if the wan drops, use the mesh as the gateway.
>
>
> # Configure logging
> log syslog all;
> log "/var/log/bird.log" all;
> log stderr all;
> router id from "br-lan";
>
> # Sync bird routing table with kernel
> protocol kernel kernel4 {
>     description "Kernel protocol for IPv4";
>     metric 50;
>     ipv4 {
>         table master4;
>         export filter {
>             if proto = "lan" then reject;
>             accept;
>         };
>         import all;
>     };
> };
>
> protocol kernel kernel6 {
>     description "Kernel protocol for IPv6";
>     metric 300;
>     ipv6 {
>         table master6;
>         export filter {
>             if proto = "lan" then reject;
>             accept;
>         };
>         import all;
>     };
> };
>
> protocol device {
>     description "Device protocol";
> };
>
> protocol direct lan {
>     description "LAN protocol";
>     ipv4;
>     ipv6;
>     interface "br-lan";
>     check link;
> }
> protocol babel ninux {
>     description "Babel protocol for NINUX network";
>     ipv4 {
>         export where (source = RTS_DEVICE) || (source = RTS_BABEL);
>     };
>     ipv6 {
>         export where (source = RTS_DEVICE) || (source = RTS_BABEL);
>     };
>     interface "vpnbas" {
>         check link;
>     };
> ## Used to connect with other neighbours on the same layer 2 network.
> ## Decomment the config to use it, not this comments of course!
> ## Use the correct name interface, not the logical openwrt/(l)uci one.
> ## You can define more interfaces maches using * in regex (like "ifnet*")
> ## or "ifnet1", "ifnet2", "ifnetN", "otherifnetnames" form.
> ## You can also define more interfaces with other parameters, please refer to:
> ## https://bird.network.cz/?get_doc&v=20&f=bird-6.html#ss6.1
> ## After, reload the bird daemon with: /etc/init.d/bird reload
> ## or if you perefer, reastart with: /etc/init.d/bird restart
>     interface "mesh" {
>         type wireless; # or wired
>         check link;
>     };
> }
>
>

-- 
*Brandon Zhi*
HUIZE LTD

www.huize.asia  <https://huize.asia/>| www.ixp.su | Twitter


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