Digi TX54 User Manual page 70

Interfaces
When SureLink is configured for Wireless WANs, SureLink tests are only run if the cellular
modem is connected and has an IP address. Use the SIM failover options to configure the
TX54 device to automatically recover the modem in the event that it cannot obtain an IP
address. See
(config network interface my_wan> ipv4 surelink enable true
(config network interface my_wan)>
5. By default, the device is configured to restart the interface when its connection is considered
to have failed.
To disable:
(config network interface my_wan ipv4 surelink)> restart false
(config network interface my_wan ipv4 surelink>
(Optional) Set the number of times that the Surelink test must fail before the interface
n
is restarted:
(config network interface my_wan ipv4 surelink)> restart_attempts
int
(config network interface my_wan ipv4 surelink>
where int is any number greater than 0. The default is 1.
6. (Optional) If the interface is a WWAN, set the device to reset the modem:
(config network interface my_wan ipv4 surelink)> reset_modem true
(config network interface my_wan ipv4 surelink>
If reset_modem is enabled, set the number of times that Surelink tests must fail prior
n
to resetting the modem:
(config network interface my_wan ipv4 surelink)> reset_modem_
attempts int
(config network interface my_wan ipv4 surelink>
where int is an integer between 1 through 5. The default is 1.
7. If the interface is a WWAN, SIM switching is enabled by default. To disable:
(config network interface my_wan ipv4 surelink)> switch_sim false
(config network interface my_wan ipv4 surelink>
Note The SureLink switch_sim option differs from the sim_failover option, which is set
during WWAN configuration. sim_failover applies when the modem is unable to connect to a
cellular network, whereas switch_sim applies when the WWAN interface is failing SureLink
tests even though the modem is connected. See
(WWAN) for more information about the sim_failover option.
If switch_sim is enabled, set the number of times that Surelink tests must fail prior to
n
switching SIMS:
TX54 User Guide
Configure a Wireless Wide Area Network (WWAN)
Wide Area Networks (WANs)
for details about SIM failover.
Configure a Wireless Wide Area Network
70