Digi X2 - Manual (Page 187)

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M o n i t o r a n d m a n a g e D i g i d e v i c e s
SureLink statistics
Digi SureLink™ provides an “always-on” mobile network connection to ensure that a
Digi device is in a state where it can connect to the network.
The statistics displayed for Digi SureLink pertain to the periodic 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 three Link Integrity Monitoring tests
available: Ping Test, TCP Connection Test, and DNS Lookup Test. For descriptions of
these tests, see "Link integrity monitoring settings" on page 126.
In these SureLink statistics, a “session” is a PPP session. The session statistics are reset to
zero at the start of a new PPP connection. The “total” statistics are the accumulated totals
for all sessions since the device booted. The “tests” are the SureLink Link Integrity
Monitoring tests that have been configured to be run when the mobile network connection
is established.
session successes
The number of times a configured test was attempted and succeeded in the current PPP
session.
session failures
The number of times a configured test was attempted but failed in the current PPP
session.
session consecutive failures
The number of consecutive failures for a test, with no success. When a test is successful,
the consecutive failures counter is reset to zero. The consecutive failures counter
indicates a device's “progress” toward the configured maximum number of consecutive
failures, after which the PPP link is taken down (and restarted).
session bypasses
If a configuration parameter is bad, a test is bypassed rather than considered to have
succeeded or failed. This means the test was not run. If the PPP connection goes down
while a test is in progress, that test may be classified as bypassed, since it could not be
run. (Note that the PPP link may come down for many reasons, independent of
SureLink testing.)
total successes
The total number of times a configured test was attempted and succeeded since the Digi
device was booted.