Digi Connect ME User Manual

Digi Connect and ConnectPort TS Family web interface Configuration through the web interface
Digi Connect Family and ConnectPort TS Family
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n Enable Lost Time Source Recovery: If multiple external time sources are available and
configured in the Time Source Settings, normally only the best-ranking (smallestvalue) source
(s) will be used to maintain the Digi device's time. If the best-ranking source stops reporting
new time values, it is considered “lost”.
Enabling Lost Time Source Recovery allows the Digi device to consult one or more worse-
ranking (higher value) time sources in an effort to obtain a fresh time value. This prevents the
best-ranking configured time source from blocking time updates if that source stops providing
acceptable time samples.
The interval of time that must pass for Lost Time Source Recovery to begin varies according to
the best ranking time source that is reporting a value. For a time source of type “sntp server”,
the missing sample update interval is three NTP/SNTP intervals configured for that time
source, plus one minute. For a time source other than “sntpserver”, the missing sample
update interval is 61 minutes. You cannot configure these interval values.
Use the Time Adjustment Threshold to limit the amount of drift that will be tolerated before the Digi
device's time is updated using a new sample. You should select an appropriate value with
consideration for the reliability of the time sample sources.
In the case of NTP/SNTP server sources, you should also consider the latency, round-trip timing, and
reliability of the network connection (between the Digi device and the server).
If the communications path between the Digi device and server involves a cellular network
connection, you should consider the performance and behavior characteristics of the cellular network.
In a cellular network, intermittent packet delays are possible in either the transmit or receive
direction (or both). Frequently these delays are asymmetric, such that the delay is greater in one
direction than in the other.
In such conditions, the round-trip timing (of the request/reply) skews the time sample adjustment to
determine the time value to use for the device. Therefore configuring an aggressively small (short)
threshold value may cause the device to adjust its time frequently and unnecessarily, such that the
time value “jumps” forward or backward as a consequence of asymmetric packet delays.
Remote Manager settings
The Remote Manager configuration page sets up the connection to the Device Management remote
management server so the Digi device can connect to the server. Device Management allows you to
configure and manage Remote Manager-registered devices from remote locations.
In this discussion:
n Remote Manager refers to the Digi machine-to-machine cloud-based network operating
platform.
n Device Management refers to a web based device management application that allows a user
to manage their inventory of devices.
n Remote Manager-registered device is Digi device that connects to the Remote Manager platform
which implements the EDP protocol in order to establish and maintain this connection.
For more information about Remote Manager, these terms, and how to remotely configure and
manage this device, please visit the Remote Manager product page and see the Remote ManagerUser
Guide.

Digi Connect ME Specifications

General

Brand	Digi
Model	Connect ME
Category	Network Hardware
Language	English