Relationship between MSTP device unreachability and service interruption

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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.

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.

What is the relationship between cloud audit and other cloud services
The associated service collects the operations, such as adding, modifying, and deleting, performed by users on cloud resources and reports them to CTS in a special structure and format. If you have enabled Object Storage Service (OBS), the information reported to CTS will be transferred to OBS buckets. For example, if you create an image in the IMS service, the IMS service will report the image creation (a trace) to CTS which will then deliver the trace to the OBS bucket for storage if the OBS service is enabled. You can view a trace file on the trace list by CTS.

Relationship between the power consumption and heat consumption of devices
For transport devices, the heat consumption and power consumption are similar and can be considered the same. Heat consumption is expressed in BTU/h, while power consumption is expressed in W. The conversion between the two units is as follows: 1 BTU/h = 0.2931 W.

Difference between logical fibers on a WDM/OTN device and those on an MSTP/SDH device
Each logical fiber on an SDH device represents a pair of physical fibers and each logical fiber on a WDM device represents one physical fiber.

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