SDC is Unreachable

An SDC is in the state "Unreachable" if it has failed to respond to two heartbeat requests from CDO in a row. If your SDC is unreachable, your tenant will not be able to communicate with any of the devices you have onboarded.

CDO indicates that an SDC is unreachable in these ways:

  • You see the message, “Some Secure Device Connectors (SDC) are unreachable. You will not be able to communicate with devices associated with these SDCs.” on the CDO home page.

  • The SDC's status in the Services page is "Unreachable."

Frist, attempt to reconnect the SDC to your tenant to resolve this issue:

  1. Check that the SDC virtual machine is running and can reach a CDO IP address in your region. See Connect Cisco Defense Orchestrator to your Managed Devices.

  2. Attempt to reconnect CDO and the SDC by requesting a heartbeat manually. If the SDC responds to a heartbeat request, it will return to "Active" status. To request a heartbeat manually:

    1. From the CDO menu, choose Tools & Services > Secure Connectors.

    2. Click the SDC that is unreachable.

    3. In the Actions pane, click Request Heartbeat.

    4. Click Reconnect.

  3. If the SDC does not return to the Active status after manually attempting to reconnect it to your tenant, follow the instructions in SDC Status Does not Become Active on CDO after Deployment.

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