Configure a TCP connection timeout

You can configure the number of times an unacknowledged TCP data packet will be retransmitted before the connection is considered lost.

This feature is useful as it allows a backup system to control the serial port if the primary system goes offline, or for the primary system to be able to recover regardless of whether there has been a network disruption.

A low number of retries will end a "stale" connection more quickly that a larger number. The default is 15 retries.

  1. Log into Digi Remote Manager, or log into the local Web UI as a user with full Admin access rights.
  2. Access the device configuration:

    1. Locate your device as described in Use Digi Remote Manager to view and manage your device.
    2. Click the Device ID.
    3. Click Settings.
    4. Click to expand Config.

    1. On the menu, click System. Under Configuration, click Device Configuration.

      The Configuration window is displayed.

  3. Set the TCP retry attempts value:
    1. Click Network > Advanced.
    2. For TCP retries2, enter the number of times an unacknowledged TCP data packet will be transmitted before the connection is considered lost.

      Minimum: 0

      Maximum: 255

      Default: 15

  4. Click Apply to save the configuration and apply the change.