Table of Contents

Inter-DMA connection issues when ExternalAuthentication is used

Affected versions

From DataMiner 10.1.0 [CU17]/10.2.0 [CU5]/10.2.8 onwards.

Cause

A race condition during the startup of DataMiner Agents could cause Agents to incorrectly set the ConnectionAuthMethod for inter-DMA connections to ExternalAuth. This falls back to SSPI.dll, which is no longer supported, leading to connection failures between Agents.

Workaround

To resolve the issue without restarting the DMA, update the ConnectionAuthMethod setting on the affected Agent:

  1. Open the SLNetClientTest tool and connect to the DMA that displays the error log.

  2. Navigate to Advanced > Options > SLNet Options.

  3. In the dropdown list next to Option values for, select ConnectionAuthMethod.

    ConnectionAuthMethod

  4. On the Agent that is marked as disconnected, double-click the value field.

  5. Enter Sspi as the new value.

  6. Click OK.

Fix

Install DataMiner 10.4.12/10.5.0.

Description

When using ExternalAuthentication, some Agents may display other Agents as disconnected. The following error can be found in the SLNet logging: Connect to <ID> (<remoteAddress>) failed [...x]: Login via SSPI.dll is no longer supported.

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