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OSN 9800 V100 Configuration Guide 03

This document introduces service configuration process for OSN 9800.

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Configuring the Two-Fiber Bidirectional MSP Ring Services

Configuring the Two-Fiber Bidirectional MSP Ring Services

To configure the two-fiber bidirectional MSP service, you need respectively create the MSP subnet protection and MSP services. There is no requirement for the creation sequence.

Configuration Networking Diagram

For the two-fiber bidirectional MSP ring in a single ring network, the configuration networking diagram is relative simple. In the network construction, you should create and name NEs in sequence according to the certain direction, which helps you facilitate the planning of the service flow and service configuration.

Figure 6-6 shows a two-fiber bidirectional MSP ring consisting of four NEs. All NEs on the ring use A212 boards for transmitting SDH services.

Figure 6-6 Networking of a two-fiber bidirectional MSP ring

Signal Flow and Timeslot Allocation

When the MSP subnet is created, you can configure the two-fiber bidirectional MSP service that enters the ring network directly from the source NE, passes through the intermediate node and then is dropped on the sink NE. For the ring network service, there is more than one route from the source NE to the sink NE. In actual application scenarios, not all routes need to be configured. Therefore, you should properly plan and configure the service direction and timeslots before the configuration.

Figure 6-7 shows the signal flow and timeslot allocation. In this example, one VC-4 service is added to the ring from NE1 and dropped from NE3, and the service passes through NE2.

Figure 6-7 Signal flow and timeslot allocation

Configuration Process (End-to-End Mode)

This topic describes how to Ring MSP protection services in end-to-end mode.


  • The physical topology of the network must be created.
  • The NEs, boards, and fibers must be created on the U2000.
  • OCh trails are searched out.
  • When the port is set to the SDH line mode, OCh trails do not need to be searched out. You can skip steps 1 and 2.
  • An SDH network is a synchronous system and has high requirements on clock synchronization. Therefore, ensure that SDH clocks have been configured before configuring services and features. For details, see "Configuring Clock".


  1. Configure virtual port mapping for universal line boards on the source and sink NEs. For details about the procedure, see Configuring Virtual Ports and Mapping in End-to-End Mode.
  2. Search WDM trails. For details, see Searching for WDM Trails.
  3. Configure Ring MSP protection.
    1. Log in to the NMS, as shown in the following figure.

    2. Set the related parameters.

      The Service Mapping value of the virtual port mapping for the working link must be the same as those for the protection link.

    3. Complete the creation.

  4. Create VC-4 services.
    1. Log in to the NMS, as shown in the following figure.

    2. In the NE Explorer, open the operation window.

    3. Click Browse to select the source and sink NEs.

    4. After confirming service-layer route information, complete the service creation.

  5. Verify that the services are correctly configured with reference to Verifying the Service Configuration.
Updated: 2019-09-05

Document ID: EDOC1100033663

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