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OSN 9800 V100 Configuration Guide 03

This document introduces service configuration process for OSN 9800.
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Configuration Example: 1+1 Linear MSP Services

Configuration Example: 1+1 Linear MSP Services

In the case of the 1+1 linear multiplex section protection (MSP), 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 normal cases, and selects services from the protection path when the working path becomes faulty.

Networking Diagram

The networking diagram for the point-to-point 1+1 linear MSP services is simple. Two NEs are connected to two pairs of optical fibers.

As shown in Figure 6-4, NE1 and NE2 use the S208 boards as tributary boards to add and drop services and the U210 boards as line boards to transmit SDH services.

Figure 6-4 Networking diagram for 1+1 linear MSP services

Service Planning in End-to-End Mode

This topic describes service planning in end-to-end mode.

Signal Flow and Timeslot Allocation

As shown in Figure 6-5, 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 are transmitted from the working path and protection path at the same time. Then, the services are dropped from the sink NE (NE2), which selects the services from the working path.

  • Traffic direction from NE2 to NE1: NE2→NE1

    Services are added to the source NE (NE2) and are transmitted on the working path and protection path at the same time. Then, the services are dropped from the sink NE (NE1), which selects the services from the working path.

  • The first VC-4 of the SDH link between NE1 and NE2 is used to transmit NE1←→NE2 services, and one STM-64 service is added and dropped separately on NE1 and NE2.
When the working path from NE1 to NE2 becomes faulty, in the case of single-ended switching, the signal flow is as follows:
  • Traffic direction from NE1 to NE2: NE1→NE2

    Services are added to the source NE (NE1) and are transmitted on the working path and protection path at the same time. Then, the services are dropped from the sink NE (NE2), which selects the services from the protection path.

  • The services from NE2 to NE1 are not affected, and the traffic direction is NE2→NE1.

    Services are added to the source NE (NE2) and are transmitted on the working path and protection path at the same time. Then, the services are dropped from the sink NE (NE1), which selects the services from the working path.

Figure 6-5 Signal flow and timeslot allocation of the 1+1 linear MSP service

Service Planning

Table 6-3 Service planning: virtual port mapping of universal line boards
Parameter Value in This Example Description
Service Mapping SDH The service type is SDH.
Carried Service ODU2 In this example, the carried service is STM-64 on the ODU2 level.
Source NE1-Shelf0(subrack)-22-V2U210-1(IN1/OUT1) In this example, the U210 board in slot 22 of NE1 is used as the source universal line board.
Sink NE2-Shelf0(subrack)-25-V2U210-1(IN1/OUT1) In this example, the U210 board in slot 25 of NE2 is used as the sink universal line board.
Table 6-4 Service planning: 1+1 linear MSP protection
Parameter Value in This Example Description
Capacity level STM-64 In this example, STM-64 services are required.
Source NE1 In this example, NE1 is used as the source end.
Sink NE2 In this example, NE2 is used as the sink end.
Work Link NE1-NE2: 22-V2U210-51(V_SDH_1)-25-V2U210-51(V_SDH_1) In this example, the U210 board in slot 22 of NE1 and the U210 board in slot 25 of NE2 are used to form the working link.
Protection Link NE1-NE2: 23-V2U210-55(V_SDH_5)-26-V2U210-55(V_SDH_5) In this example, the U210 board in slot 23 of NE1 and the U210 board in slot 26 of NE2 are used to form the protection link.
Table 6-5 Service planning: VC-4 services
Parameter Value in This Example Description
Level VC4 In this example, VC-4 services are required. Therefore, set this parameter to VC4.
Direction Bidirectional In this example, services are transmitted and received on the same path. Therefore, set this parameter to Bidirectional.
Source Shelf0(subrack)-14-V1S208-1(SDH-1)-VC4:1 In this example, the S208 board in slot 14 of NE1 is used as the source board.
Sink Shelf0(subrack)-9-V1S208-1(SDH-1)-VC4:1 In this example, the S208 board in slot 9 of NE2 is used as the sink board.
Activate Immediately Yes -

Configuration Process (End-to-End Mode)

This topic describes how to create 1+1 linear MSP protection services in end-to-end mode.

Prerequisites

  • 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".

Procedure

  1. Configure virtual port mapping for universal line boards on the source and sink NEs.
    1. Log in to the NMS, as shown in the following figure.

    2. Configure virtual port mapping for the working link.

    3. Configure virtual port mapping for the protection link.

      NOTE:
      The Service Mapping and Carried Service values of the virtual port mapping for the working link must be the same as those for the protection link.

  2. Search WDM trails. For details, see Searching for WDM Trails.
  3. Configure 1+1 linear MSP protection.
    1. Log in to the NMS, as shown in the following figure.

    2. Set the related parameters.

      NOTE:
      The Service Mapping and Carried Service values 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.

Parameter Description: Multiplex Section Protection

This section describes necessary parameters for configuring linear multiplex section protection (LMSP).

Table 6-6 lists parameters for configuring MSP.

Table 6-6 Parameters for configuring MSP

Parameter

Value

Description

Name

For example, MSP_1

Indicates the name of a protection subnet. The name of a new protection subnet is automatically generated. You can rename the protection subnet as required.

Revertive Mode Non-Revertive, Revertive Displays the revertive mode of the protection subnet.
Switching Mode

Single-Ended Switching, Dual-Ended Switching

Default value: Single-Ended Switching

Switching Mode specifies the switching mode of linear multiplex section protection (MSP).

Value description:
  • Single-Ended Switching: Indicates that the transmit end continues to transmit signals to the broken fiber after the switching occurs at the faulty end.
  • Dual-Ended Switching: Indicates that the transmit end does not transmit signals to the broken fiber after the switching occurs at the transmit end and at the receive end.
NOTE:

9800 only supports single-ended switching.

Level

STM-1, STM-4, STM-16, STM-64

Indicates the capacity level of a created protection subnet. The capacity level of the created protection subnet must be the same as the transmission rate of the line boards that form the protection subnet.

NOTICE:

When selecting an incorrect capacity level, you will fail to create a protection subnet.

Resource Sharing

-

Resource sharing indicates that two protection subnets can share one physical resource. If multiple protection subnets are created on a fiber, the second and later protection subnets share the resources on the fiber.

NOTE:

The 9800 does not support this parameter.

Assigned by VC4

Selected, Deselected

Indicates that different VC-4s correspond to different protection subnets. You can group VC-4s in the optical fiber into different protection subnets to achieve MS protection on subnets. This means that certain VC-4s in the fiber can be allocated to a protection subnet.

Node

For example, NE70

Displays the selected NE.

Link

For example, NE140-NE141 Node 1

Displays fiber links of a protection subnet.

Physical Information

For example, shelf0-22-V2U210-51(V_SDH-1)-shelf0-25-V2U210-51(V_SDH-1)

Displays the line board resource used by the fiber link.

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Updated: 2019-09-05

Document ID: EDOC1100033663

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