Whether extra services can be restored by stopping the protocol after the MSP switching on an MSTP device

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Whether extra services can be restored by stopping the protocol after the MSP switching on an MSTP device:
Services on the faulty working channel will be interrupted by stopping the protocol after the MSP switching. Then, the extra services on the protection channel will be restored. During this process, you need to pay attention to the severities of services on the working channel and extra services on the protection channel.

Other related questions:
Whether a service is provisioned on an MSTP device
Whether a service is provisioned on an MSTP device: 1. Search and view related service trails to check whether the service trails are complete and activated. 2. Check whether abnormal alarms are reported for the service board. 3. Test the customer services.

Whether diamond services can be switched if D4 to D12 bytes are unavailable on an MSTP device
Whether diamond services can be switched if D4 to D12 bytes are unavailable on an MSTP device: If D4 to D12 bytes are unavailable, diamond services can be switched normally but cannot be rerouted.

Whether the license file can be imported without stopping services
Whether the license file can be imported without stopping services: FAQ-Can the License File Be Imported Without Stopping Services

Relationship between MSTP device unreachability and service interruption
Relationship between MSTP device unreachability and service interruption: SDH service and monitoring channels are distributed in different positions of an STM-N frame. By default, the regenerator section overhead bytes D1–D3 are used as the monitoring channel, and the payload area of the STM-N frame is used as the SDH service channel. Modules on each board can independently process the bytes and payloads. In normal cases, services will not be interrupted due to device unreachability(a monitoring channel fault). Device unreachability indicates that the monitoring signals cannot be transmitted or received from the NMS to an NE. For example, DCC bytes fail to be transmitted or received. The possible cause is that the system control board may be faulty. A service interruption indicates that service signals are unreachable at the source and sink ends. If a device becomes unreachable and a service is interrupted, the following faults may occur: power outrage, board faults, or link faults. You can determine the possible cause based on alarms reported on upstream NEs.

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