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set surelink
202 Chapter 2 Command Descriptions
set surelink
Devices
supported
This command is supported in Digi Cellular Family products only.
Purpose Configures Digi SureLink™ settings for a Digi Cellular Family device. Digi
SureLink™ provides an “always-on” mobile network connection to ensure
that a Digi Cellular Family device is in a state where it can connect to the
network. It does this through hardware reset thresholds and periodic tests
of the connection.
There are several groups of command options for “set surelink:”
• Hardware reset thresholds: these settings can be configured to clear
any error states that were resident in the device's cellular module, so
the device can once again connect to the network, if the connection is
lost. SureLink does this by first resetting the cellular module after a
default or specified number of consecutive failed connection attempts,
and then resetting the Digi Cellular device after a default or specified
number of failed consecutive connection attempts. Each of these
connection-failure settings can be disabled as well.
• Link Integrity Monitoring Tests: Digi SureLink can be configured to run
tests, known as Link Integrity Monitoring tests, that are run over the
established PPP connection to ensure that end-to-end communication
is possible. There are command options that apply to all link testing,
and options for the three available Link Integrity Monitoring tests:
• Ping Test
• TCP Connection Test
• DNS Lookup Test
Syntax Set Hardware reset thresholds
set surelink [module_reset_connect_failures={1-255|0=off}]
[system_reset_connect_failures={1-255|0=off}]
Configure Link Integrity Monitoring Tests:
Set general link test options
set surelink [state={on|off}]
[test={ping|tcp|dns}]
[trigger={interval|idle}]
[max_consecutive_failures={1-255|0=off}] (probe failures before
link reset)
[interval=10-65535]
Set ICMP ping link test options
set surelink [pingaddr1={ipv4 address|fqdn}]
[pingaddr2={ipv4 address|fqdn}]
Set DNS lookup link test parameters:
set surelink [dnsfqdn1=dns fqdn]
[dnsfqdn2=dns fqdn]