Right way to make the 2nd WAN hot-standby in `Fail Over` mode and route specific traffic via it?

[huxuan]

Hi Buddies,

I want to have a 2nd WAN only for ISP's IPTV as I prefer to be able to scan the ISP's multicast port from merlin so I enabled the dual wan from the modem's IPTV port to LAN1 on merlin and want to route all traffic with 239.0.0.0/8 as destination via WAN1.

Since the 2nd WAN does not have actual Internet connection, `Load balance` mode is not my option. But in `Fail Over` mode, the 2nd WAN will become cold standby after reboot and I accidentally make it hot-standby according to the post here [1], but even after I set the route policy manually, seems I still can not scan the traffic via WAN1. Is there any aspect I missed? I can confirm that the wire works, as I tested it with standalone laptop, I just want to make it work on merlin instead.

An extra small question is what the right place I should put the script `service "restart_wan_if 1"` [1] to make all the process automatically. Firstly I tried to make it in `wan-start` and it seems to make dnsmasq restart again and again. When I move it to `firewall-start` and seems the `ip rule add to 239.0.0.0/8 lookup wan1` does not take effect actually.

Thanks in advance.

[1] How to force dual WAN Hot-Ready?

 

[dosborne]

Not sure if this helps you, but I have both a cable internet and a DSL internet connection (2 different ISPs). Both routers connect to the same switch and I simply set the appropriate default gateway on my various devices to use one or the other provider. It obviously doesn't do automated failover in this configuration, but I can monitor traffic on either or both easily.