Failover to USB modem with ping watchdog doesn't work

[orangy]

Hello, I'm trying to setup failover/failback with Ethernet WAN and USB Modem. The problem is that WAN doesn't disconnect physically when it fails, it just goes to the 99% packet loss mode. So I setup ping watchdog to be 10 times x 1 sec to 8.8.8.8, but it seems it is never triggered. WebUI shows I'm always on primary WAN and never fallback to USB modem, even if my local computer fails to ping same host for like 30 seconds.

Both WANs work when selecting as the only WAN, i.e. switching off dual wan, so it's not a failing modem.

One suspicious thing is that USB WAN is displayed as "disconnected", and not "standby" (or something like this). May be USB is not powered in this mode and thus considered disconnected, and thus wanduck doesn't failover to it? Anything I can do about it?

I'm on 380.66_4 with AC66U. Same issue with official firmware, in fact, by I was hoping Merlin can help me here…

Thanks!

 

[stylish_me]

Hello, I'm trying to setup failover/failback with Ethernet WAN and USB Modem. The problem is that WAN doesn't disconnect physically when it fails, it just goes to the 99% packet loss mode. So I setup ping watchdog to be 10 times x 1 sec to 8.8.8.8, but it seems it is never triggered. WebUI shows I'm always on primary WAN and never fallback to USB modem, even if my local computer fails to ping same host for like 30 seconds.

Both WANs work when selecting as the only WAN, i.e. switching off dual wan, so it's not a failing modem.

One suspicious thing is that USB WAN is displayed as "disconnected", and not "standby" (or something like this). May be USB is not powered in this mode and thus considered disconnected, and thus wanduck doesn't failover to it? Anything I can do about it?

I'm on 380.66_4 with AC66U. Same issue with official firmware, in fact, by I was hoping Merlin can help me here…

Thanks!

Try huawei af23 if you have huawei dongle. It lets you connect usb modem via lan cable and set dual wan without any usb staff.
I bought it on Ali and now everything works perfectly. And i think you will also like email notification script from the first page (my topic) that notifies you when your router switches from primary to secondary wan and back.

 

[orangy]

Try huawei af23

I have the Huawei e3372 dongle inside an outdoor antenna, and I have a 3-AP setup with ASUS here to cover pretty big area, so adding another router would complicate things a lot. I would very much like to remove all the routing features from E3372 and make it just a modem, so that ASUS router would do all the things and have an external IP, but couldn't yet figure it out.

I think my hypothesis for unpowered modem doesn't stand, because if I physically unplug ethernet cable from main uplink, it does switch to USB pretty instantly. Probably some other problem with ping detection… I checked source code of merlin WRT, and couldn't find anything that could be wrong by looking through the code, but it's quite complex piece of C code with conditional compilation blocks and honestly not very good code style. I hope @RMerlin can shed some light on this…

 

[stylish_me]

I have the Huawei e3372 dongle inside an outdoor antenna, and I have a 3-AP setup with ASUS here to cover pretty big area, so adding another router would complicate things a lot.

AF23 will not make things more complicated. It will just keep your dongle connected to internet all the time. And if asus decides to switch to secondawy WAN - you will not have to waiut about 2 minutes for the dongle to connect. And it will solve all your problems with watchdog. Because AF23 is connected to asus router via lan cable and works as a second wired line - so watchdog works ok, no problems with usb power, wan switching and so on. You just have two internet wired lines and asus switches instantly between them.
I used to have dongle connected directly to my rt-n66 for 2 years. It worked but with lots of problems. And wan-usb switch didn't work properly every time. Sometimes dongle didn't start at all.
If you want reliable dual wan - i tell you how to make it. If you want to avoid extra gadgets - you'll have to change your router to smth that works ok with usb modems - asus has a lot of problems with it and Merlin doesn't touch this part of the code because he doesn't use this dual wan feature.

 

[peraburek]

@orangy - for me dual wan works just fine, I use Huawei E3372 with T-Mobile LTE SIM card, no problems at all

you can try android smartphone instead