I realised that I’d updated the firmware on the router when I first installed it, but I had not done so for the modem.
I updated that before today’s tests.
To prevent waiting too long I set the delay to 5 seconds and 1 attempt on both SIM1 and SIM2
Failover set as before
On my first test I removed the card and it took 35 seconds for the 3/4/5G lights to start blinking on the front of the unit.
I waited 4 minutes from the removal of the SIM with no change and then re-inserted the SIM.
Two minutes later there was still no change so I rebooted the router from the web interface.
I really think this is bad. The router should be able to find the SIM again after it has been re-inserted without needing a reboot.
For test 2 I decided to put the timeout intervals back to 30 seconds with 3 tries to see if that made any difference.
It took 15 seconds after I removed the SIM for the SIM1 light to go out on the front of the unit and 24 seconds before the 3/4/5G lights to start blinking.
Failover to SIM2 eventually worked, but it was 3 minutes and 20 seconds from initial removal of the SIM.
Also, until the failover actually worked, the overview reported that no SIM card was inserted in slot 2 (it was)
Once failover to SIM2 had worked I put SIM1 back in and waited for the 5 minute ‘switch back to default SIM’. This took about 30 seconds to work, but it did switch back OK.
So it’s a bit clumsy, and the times you put into the settings don’t seem to work properly or be accurate, but it sort of does what I want - eventually.
Failover from SIM to SIM is a feature I want because this will be in a moving vehicle so the idea is to put SIMs in from two different providers so if I’m in an area where there is no coverage for one then the other should work.
I’m considering keeping my existing Nighthawk M1 for the second SIM and connecting it via cable to the RUTX-50 as my tests with the WAN failover were much quicker and it would also allow me to do load balancing.
A shame to need two different units to do that and a shame that SIM to SIM failover seems to be a bit buggy.
I will do some more testing with WAN to SIM failover and see if that will be a better option for me, but it means a second antenna etc which is not ideal and it’s more expense.
If only the RUTX-50 did this better…