Dual SIM Failover
Testing
If you have configured advanced Dual SIM failover (chapter
Dual SIM Failover
– Advanced
), then
test as per the basic method but also temporarily point the monitoring pings to an IP address which
you can control and block the pings (or to an address that does not exist). This will simulate a
faulty link and will force the router into recovery mode.
Advanced Dual SIM Failover Testing
Browse to
Status
System Log
Nov 9 14:31:03 mrx[2058]: WLS / PKT: Failed to establish connection 3 consecutive times
Nov 9 14:31:03 mrx[2058]: WLS / PKT: restarting RF module.
Nov 9 14:31:15 mrx[2058]: MSPDriver:
activated sim 2
Connection Maintenenance and Remote Poll Status
Nov 9 14:29:06 mrx[2058]: ConnectionTester: ICMP resetting
This event appears when the test pings have failed.
The router will try and re-establish the 4G link via the primary SIM but if it fails to do so then it
activates SIM 2.
NB:
If the 4G link fails to re-establish on either SIM, the router will eventually reboot the router as
specified in the
Failed establishment attempts before modem reboot
setting detailed in page 5.
The
Interface Restarts
shows how often the interface has been restarted due to failed responses
to the monitoring pings. This page also shows how many pings have been transmitted (Data sent)
and how many replies have been received (Data Received).
NB:
For testing purposes we sent pings to IP address 1.2.3.4 which was unreachable.
