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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 Services on the SNCP Ring

Configuring Services on the SNCP Ring

Compared with the services on an MSP ring, the services on an SNCP ring have dedicated physical paths as the protection paths. In addition, the services on an SNCP ring are dually fed and selectively received. When you configure services on an SNCP ring, you need not configure the protection subnet and the services separately. When you configure services on an SNCP ring, however, you need to configure the working services and protection services separately.

Networking Diagram

The creation of an SNCP ring network is similar to the creation of an MSP ring network. For example, the MSP and SNCP rings are constructed based on two fibers and their services must pass through the intermediate nodes for transmission from the source NE to the sink NE. The difference is that the SNCP protection and SNCP services can be created on the U2000 at a time.

Figure 2-13 shows an SNCP ring that comprises four pieces of equipment. In this example, the SP3D boards are configured on the source NE (NE1) and the sink NE (NE3) as tributary boards to add and drop services, and the SL1D boards are used as line boards to transmit SDH services.

Figure 2-13  Networking diagram of the services on the SNCP ring

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

Similar to the service configuration of an MSP ring, you need to plan proper traffic directions before configuring the services on an SNCP ring, if multiple service routes are available from the source end to the sink end. In the case of the services on the SNCP ring, allocate timeslots for the source slot of the working service and timeslots for the source slot of the protection service, when allocating timeslots for source slots.

Figure 2-14 shows the signal flow of the services on the SNCP ring and the timeslot allocation to the services on the SNCP ring. In the actual configuration, you can plan other proper working paths and protection paths according to the requirement. In this example, the working service route is NE1-NE2-NE3 and the protection service route is NE1-NE4-NE3. There are five E1 services.

Figure 2-14  Signal flow and timeslot allocation

Per-NE Configuration Process

The SNCP protection and the services on the SNCP ring are configured on the U2000 at a time. To configure the SNCP services on the source and sink NEs, you need to determine the source boards and timeslots for the working service and protection service. In addition, you need to configure the pass-through service on the intermediate nodes.

Prerequisites

  • The physical topology of the network must be created.
  • The NEs, boards, and fibers must be created on the U2000.
  • You must be familiar with Signal Flow and Timeslot Allocation.

Procedure

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

      Parameter Value in This Example Description
      Service Type SNCP In this example, Service Type adopts the default value, namely, SNCP.
      Level VC12 In this example, E1 services are configured on the ring. 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.
      Revertive Mode Revertive This parameter indicates whether the services are switched back after the faulty line is recovered, that is, whether the switching is revertive or non-revertive. In this example, Revertive Mode is set to Revertive.
      Hold-Off Time (100ms) 0 It is recommended that this parameter adopts the default value.
      WTR Time (s) 600 After the working path is recovered to normal and the normal state lasts for 600s, the switching restoration occurs. This parameter is valid only when the Revertive Mode parameter is set to Revertive.
      Working Service Source Slot 1-SL1D-1(SDH-1) In this example, the SL1D board in slot 1 is configured as the source line board of the working service. See Figure 2-14. You can select different source boards depending on the actual situation.
      Source VC4 VC4-1 In this example, the working service source uses the timeslots of VC4-1.
      Source Timeslot Range(e.g.1,3-6) 1-5 In this example, the total capacity of the services is 5xE1 according to the plan. The service level is VC12. Hence, Source Timeslot Range of the Working Service is set to 1-5. See Figure 2-14.
      Sink Slot 3-SP3D In this example, the SP3D board in slot 3 is configured as the sink tributary board. See Figure 2-14. You can select different sink boards depending on the actual situation.
      Sink VC4 - -
      Sink Timeslot Range(e.g.1,3-6) 1-5 In this example, the total capacity of the services is 5xE1 according to the plan. The service level is VC12. Hence, Source Timeslot Range of the Working Service is set to 1-5. See Figure 2-14
      Protection Service Source Slot 1-SL1D-2(SDH-2) In this example, the SL1D board in slot 1 is configured as the source board of the protection service. See Figure 2-14. You can select different source boards depending on the actual situation.
      Source VC4 VC4-1 In this example, the protection service source uses the timeslots of VC4-1.
      Source Timeslot Range(e.g.1,3-6) 1-5 In this example, the total capacity of the services is 5xE1 according to the plan. The service level is VC12. Hence, Source Timeslot Range of the Protection Service is set to 1-5. See Figure 2-14.

  2. Configure the SDH services of the sink NE (NE3). Refer to 1 and configure the SDH services of NE3. The method and parameters for configuring the SDH services of NE3 are the same as the method and parameters for configuring the SDH services of NE1.
  3. Configure the pass-through services of NE2.

    1. In the NE Explorer, select NE2 and then choose Communication > 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 on the ring. 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 E1 services is set to Bidirectional.
      Source Slot 1-SL1D-2(SDH-2) In this example, the SL1D board in slot 1 is configured as the source line board. See Figure 2-14. You can select different source boards depending on the actual situation.
      Source VC4 VC4-1 In this example, the services require 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 In this example, the total capacity of the services is 5xE1 according to the plan. The service level is VC12. Hence, Source Timeslot Range(e.g.1,3-6) is set to 1-5. See Figure 2-14.
      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 2-14. You can select different sink boards depending on the actual situation.
      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 In this example, the total capacity of the services is 5xE1 according to the plan. The service level is VC12. Hence, Sink Timeslot Range(e.g.1,3-6) is set to 1-5. See Figure 2-14.
      Activate Immediately Yes -

  4. Configure the pass-through services of NE4. Refer to 3 and configure the pass-through services of NE4. The method and parameters for configuring the pass-through services of NE4 are the same as the method and parameters for configuring the pass-through services of NE2.
  5. Check whether the services are configured correctly. 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, 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

SNCP protection and services on an SNCP ring are configured on the U2000 at the same time. To configure SNCP services on the source and sink NEs, determine the source boards and timeslots for the working service and protection service, and configure pass-through services on the intermediate nodes. The following part describes how to configure services on an SNCP ring 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.
  • 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 a VC4 server trail.
    1. Set associated parameters as follows. Set Level to VC4 Server Trail, and take default values for other parameters.

    2. Double-click the source NE (NE1) and sink NE (NE3) on the right of the Main Topology, and set up a VC4 server trail from NE1 to NE3 via NE2.

      1. On the Route Constraint tab, right-click Explicit Node, and then choose Add.
      2. In the Add Explicit Node dialog box that is displayed, set Type and What for configuring the pass-through node NE2.
      3. Click OK. The VC4 server trail is sure to stretch from NE1 to NE3 via NE2

    3. Click Apply. Then, click Close in the Operation Result dialog box indicating that the operation succeeded.
    4. Optional: In the Operation Result dialog box indicating that the operation succeeded, click Browse Trail to query the created VC4 server trail.
  3. Set up a protection VC4 server trail using the same method as setting up a VC4 server trail. During the setup of a protection VC4 server trail, ensure that the originated node is NE1, the terminated node is NE3, and the pass-through node is NE4.
  4. Create VC12 services.
    1. In Create SDH Trail, set associated parameters as follows. Set Level to VC12, and take default values for other parameters.

    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, and then click OK.
    3. Double-click the sink NE (NE3) on the right of the Main Topology, and use the same method to Tributary Port of NE3.
    4. In Create SDH Trail, click the SNCP Setting tab, right-click in the blank pane, and choose Add from the shortcut menu. In the Add the dual-fed and selective receiving node dialog box that is displayed, select NE1 as the dual-fed node and NE3 as the selective receiving node, and then click OK. In the Operation Result dialog box indicating that the operation succeeded, click Close.

    5. Optional: In the Create SDH Trail window, select Set Route Timeslot. In the dialog box that is displayed, you can modify the working server trail of VC12 services.
    6. 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.
    7. In Available Timeslots/Port, select the ports from NE1-Slot3-SP3D-2(SDH_TU-2) to NE3-Slot3-SP3D-5(SDH_TU-5), and click Add.
    8. Click OK. In the Operation Result dialog box indicating that the operation succeeded, click Close.
    9. Optional: In the Operation Result dialog box indicating that the operation succeeded, you can also click Browse Trail to query the created VC12 services.
  5. Optional: After configuring SNCP services in an end-to-end manner, you can browse the created VC4 server trails and VC12 services by choosing Service > SDH Trail > Manage SDH Trail from the Main Menu and specifying the filter conditions.
  6. Check whether the service configuration is correct. For details, see Verifying the Correctness of the SDH Service Configuration.
  7. Enable the performance monitoring function for NEs. For details, see Setting Network-Wide Performance Monitoring.
  8. Back up the configuration data of the NEs. For details, see Backing Up the NE Data to the System Control Board.
Relevant Task

To delete any service that is incorrectly configured, see Deleting SDH Services.

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Updated: 2019-01-21

Document ID: EDOC1100020976

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