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OSN 500 550 580 V100R008C50 Commissioning and Configuration Guide 02

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Configuring 1:1 Linear MSP Services

Configuring 1:1 Linear MSP Services

In the case of the 1:1 linear MSP, services are transmitted on the working path and the sink NE receives the services from the working path in normal cases. When the working path becomes faulty, the services are switched to the protection path for transmission and the sink NE receives the services from the protection path.

Networking Diagram

The networking diagram of the point-to-point 1:1 linear LSP services is simple. Two NEs are connected with two pairs of optical fibers.

As shown in Figure 2-7, the SP3D boards are used on NE1 and NE2 as tributary boards to add and drop services, and the SL1D boards are used on NE1 and NE2 as line boards to transmit SDH services.

Figure 2-7  Networking diagram of the 1:1 linear MSP services

NOTE:

This topic considers the OptiX OSN 550 as an example to describe the board layout. In the case of other products, the configuration method is the same, except for the slots. For the slot information, see the Hardware Description of the relevant product.

Signal Flow and Timeslot Allocation

To configure the 1:1 linear MSP service, you can configure the services that need to be added to the source NE and dropped from the sink NE if the 1:1 linear MSP is already created.

As shown in Figure 2-8, the signal flow and timeslot allocation are as follows:
  • Traffic direction from NE1 to NE2: NE1→NE2

    Services are added to the source NE (NE1) and then are dropped from the sink NE (NE2). The services are transmitted on the working path.

  • Traffic direction from NE2 to NE1: NE2→NE1

    Services are added to the source NE (NE2) and then are dropped from the sink NE (NE1). The services are transmitted on the working path.

  • The services between NE1 and NE2 occupy VC-12s 1-5 of VC4-1 (VC4-1:VC-12:1-5) on the SDH link between NE1 and NE2. The capacity of the services is 5xE1.
When the working path between NE1 and NE2 becomes faulty, the signal flow is as follows:
  • Traffic direction from NE1 to NE2: NE1→NE2

    Services are added to the source NE (NE1) and then are dropped from the sink NE (NE2). The services are transmitted on the protection path.

  • Traffic direction from NE2 to NE1: NE2→NE1

    Services are added to the source NE (NE2) and then are dropped from the sink NE (NE1). The services are transmitted on the protection path.

The difference between the 1:1 linear MSP service and the 1+1 linear MSP service is as follows:
  • In the case of the 1+1 linear MSP service, services are transmitted on the working path and protection path at the same time. The sink NE selects the services from the working path.
  • In the case of the 1:1 linear MSP service, services are transmitted only on the working path. Services are switched to the protection path for transmission only when the working path becomes faulty.
Figure 2-8  Signal flow and timeslot allocation of the 1:1 linear MSP services

Per-NE Configuration Process

This topic describes how to configure the 1:1 linear MSP services.

Prerequisites

  • The physical topology of the network must be created.
  • The NEs, boards, and fibers must be created on the U2000.
  • The created protection subnet must be consistent with the actual network topology. For details about how to create the protection subnet, see Creating a Linear MS Protection Subnet.
  • You must be familiar with the information about Signal Flow and Timeslot Allocation.

Procedure

  1. Configure SDH services on the source NE (NE1).
    1. Select NE1 in the NE Explorer, and then choose Configuration > SDH Service Configuration from the Function Tree.
    2. Click Create on the lower-right pane to display the Create SDH Service dialog box. Set the parameters that are required, and then click OK.

      Parameter Value in This Example Description
      Level VC12 In this example, E1 services are configured. Hence, Level of the E1 services is set to VC12.
      Direction Bidirectional In this example, services are transmitted and received on the same path. That is, the services are bidirectional services. Hence, Direction of the services is set to Bidirectional.
      Source Slot 3-SP3D In this example, the SP3D board in slot 3 is configured as the source tributary board for the bidirectional services from NE1 to NE2. See Figure 2-8.
      Source VC4 - -
      Source Timeslot Range(e.g.1,3-6) 1-5 The total capacity of the service is 5xE1 according to the plan. Hence, Source Timeslot Range(e.g.1,3-6) is set to 1-5.
      Sink Slot 1-SL1D-1(SDH-1) In this example, the SL1D board in slot 1 is configured as the sink line board. See Figure 2-8.
      Sink VC4 VC4-1 In this example, the services require five VC-12s. Sink VC4 is set to VC4-1, because a VC-4 contains 63 VC-12s.
      Sink Timeslot Range(e.g.1,3-6) 1-5 The total capacity of the services is 5xE1 according to the plan. Hence, Sink Timeslot Range(e.g.1,3-6) is set to 1-5.
      Activate Immediately Yes -

  2. Configure SDH services on the sink NE (NE2).

    Click , and select NE2 from the displayed NE Navigator. Click OK.

    Parameter Value in This Example Description
    Level VC12 In this example, E1 services are configured. Hence, Level of the E1 services is set to VC12.
    Direction Bidirectional In this example, the services are transmitted and received on the same path. That is, the services are bidirectional services. Hence, Direction of the services is set to Bidirectional.
    Source Slot 1-SL1D-1(SDH-1) In this example, the SL1D board in slot 1 is configured as the source line board. See Figure 2-8.
    Source VC4 VC4-1 In this example, the service requires five VC-12s. Source VC4 is set to VC4-1, because a VC-4 contains 63 VC-12s.
    Source Timeslot Range(e.g.1,3-6) 1-5 The total capacity of the services is 5xE1 according to the plan. Hence, Source Timeslot Range(e.g.1,3-6) is set to 1-5.
    Sink Slot 3-SP3D In this example, the SP3D board in slot 3 is configured as the sink tributary board for the bidirectional services from NE1 to NE2. See Figure 2-8.
    Sink VC4 - -
    Sink Timeslot Range(e.g.1,3-6) 1-5 The total capacity of the services is 5xE1 according to the plan. Hence, Sink Timeslot Range(e.g.1,3-6) is set to 1-5.
    Activate Immediately Yes -

  3. Check whether the services are configured correctly. For details, see Verifying the Correctness of the SDH Service Configuration.
  4. Enable the performance monitoring function of the NEs. For details, see Setting Network-Wide Performance Monitoring.
  5. Back up the configuration data of the NEs. For details, see Backing Up the NE Data to the System Control Board.
Relevant Task

If the services are configured incorrectly and thus need to be deleted, see Deleting SDH Services.

End-to-End Configuration Process

This topic describes how to configure 1:1 linear MSP services in an end-to-end manner.

Prerequisites

  • The physical network topology must be set up.
  • NEs, boards, and fibers must be successfully created on the U2000.
  • A linear MSP subnet must be created and must be the same as the actual topology. For details about how to create a protection subnet, see Creating a Linear MS Protection Subnet.
  • The operator must understand the information provided in Signal Flow and Timeslot Allocation.

Procedure

  1. Choose Service > SDH Trail > Create SDH Trail from the Main Menu.
  2. Create the VC-4 service-layer trail.
    1. Configure the parameters as follows. Set Level to VC4 Server Trail. The other parameters take default values.

    2. Double-click the source NE (NE1) and sink NE (NE2) on the right of the main topology and click Apply. In the Operation Result dialog box indicating that the operation succeeded, click Close.
    3. Optional: In the Operation Result dialog box indicating that the operation succeeded, click Browse Trail to query the created VC4 service-layer trail.
  3. Create VC12 services.
    1. In Create SDH Trail, configure the parameters as follows. Set Level to VC12. The other parameters take default values.

    2. Double-click the source NE (NE1) on the right of the main topology. The Select Board Port-Source dialog box is displayed. Select the required SP3D board and Tributary Port. Click OK.
    3. Double-click the sink NE (NE2) on the right of the main topology. Configure NE2 in the same manner.
    4. Select Copy after Creation and click Apply. In the Operation Result dialog box indicating that the operation succeeded, click Close. Then, the Copy dialog box is displayed.
    5. In Available Timeslots/Port, select the ports from NE2-Slot3-SP3D-2(SDH_TU-2) to NE1-Slot3-SP3D-5(SDH_TU-5), and click Add, and then click OK.
    6. In the Operation Result dialog box indicating that the operation succeeded, click Close.
    7. Optional: In the Operation Result dialog box indicating that the operation succeeded, click Browse Trail to query the created VC12 services.
  4. Optional: Modify the parameters SD Condition, Revertive Mode, and Switching Mode for the linear MSP.

    NOTE:
    • The parameter settings of the sink NE must be the same as those of the source NE.
    • When modifying Switching Mode,
      • Ensure that the protection group is in a proper state.
      • Ensure that the protection protocol is disabled.

    1. Choose Service > SDH Protection Subnet > Maintain SDH Protection Subnet from the Main Menu to display the SDH Protection Subnet Common Attributes window.
    2. Select the created linear MSP group. In the Protection Subnet Maintenance tab, select all nodes, right-click and choose Start/Stop Protocol > Stop from the shortcut menu.
    3. Click the Protection Subnet Parameters tab and modify the parameters SD Condition, Revertive Mode, and Switching Mode.
    4. Click Apply. Then, click Close in the Operation Result dialog box indicating that the operation succeeded.
    5. After the parameters are modified, restart the protection protocol according to 4.b.
  5. Check whether the service configuration is correct. For details, see Verifying the Correctness of the SDH Service Configuration.
  6. Enable the performance monitoring function of the NEs. For details, see Setting Network-Wide Performance Monitoring.
  7. Back up the configuration data of the NEs. For details, seeBacking Up the NE Data to the System Control Board.
Relevant Task

If the services are configured incorrectly and thus need to be deleted, see Deleting SDH Services.

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Updated: 2019-01-21

Document ID: EDOC1100020976

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