Help about dual Gateway

[chchia]

thanks, i had referred to this thread about setting the client with 2 different gateway within the same subnet. and i had successfully done it to assign certain client to second gateway.

Custom Gateway

First of all, I hope everyone is Safe and Healthy during those days, Secondly i been a big fan of this forum and you guys had helped me a lot of the years with information that is posted here. Today i got into a situation that i'm trying to solve that i haven't found an answer for so i...

www.snbforums.com

but is there an option to setup/assign 2 gateway to client with different gateway metrics?

my main router/gateway is 192.168.1.1 running Asuswrt
my second router/gateway is 192.168.1.9 running Openwrt

dhcp-option=tag:isp1,option:router,192.168.1.1
dhcp-option=tag:isp2,option:router,192.168.1.9
dhcp-host=xxxx:5B:8B:30,set:isp2,192.168.1.40
dhcp-host=xxxx:A7:ED:2D,set:isp2,192.168.1.41
dhcp-host=xxxx:11:41:9C,set:isp2,192.168.1.42
dhcp-host=xxxx:C2:36:FB,set:isp2,192.168.1.43
dhcp-host=xxxx:45:4F:B7,set:isp2,192.168.1.44

my intention is to set the dhcp-host to have second gateway to isp1 but with lower metrics, so that the host will fall down to isp1 if isp2 is fail or not working, is this possible?
i would like all client to use isp2 as much as possible and only switch to isp1 in case isp2 is down.

looking forward for any suggestion.

 

[ColinTaylor]

You can specify multiple gateways, in order of preference, in a DHCP reply. But DHCP can't effect the client's metric calculation. You can try the following but I don't know whether it will "fail over" like you want. That's probably client-specific behaviour.

dhcp-option=tag:isp2,option:router,192.168.1.9,192.168.1.1