Split-network Scenario

Last Updated : Apr 15, 2015 |

In this scenario, the system administrator administers the secondary System Manager to the active mode when the primary System Manager is also in the active mode.

The primary System Manager cannot communicate with the secondary System Manager. Some system elements can only communicate with the primary System Manager while some system elements can communicate only with the secondary System Manager.

In the split WAN or split network scenario:

  • The primary System Manager is in the active mode and is communicating with all elements in the network.

  • When a connectivity failure occurs in the network, the primary System Manager server and the secondary System Manager server send alarms to the system administrator about the network connectivity failure.

  • The system administrator verifies that the network connectivity failure is real and that:

    • Some elements can only communicate with the primary System Manager.

    • Some elements can only communicate with the secondary System Manager.

    • Some elements can communicate with both the primary System Manager and the secondary System Manager.

  • The system administrator administers the secondary System Manager to the active mode. Both the primary System Manager and the secondary System Manager are in the active mode.

  • The secondary System Manager sends notifications to all elements in the network.

  • The elements that can communicate with the primary System Manager function normally. The primary System Manager continues to manage these elements. The elements that cannot communicate with the primary System Manager search for a System Manager in the active mode.

  • The elements in the network that cannot communicate with the primary System Manager verify that the secondary System Manager is in the active mode.

  • The elements in the network that cannot communicate with the primary System Manager, but can communicate with the secondary System Manager, connect to the secondary System Manager. The secondary System Manager starts to manage these elements.

  • Any elements that cannot communicate with the primary System Manager or the secondary System Manager cannot perform data replication. These elements continue to operate with the previously replicated data.

The system remains in this state until you restore the system to the Sunny Day configuration.