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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 the Protection Subnet

Configuring the Protection Subnet

The OptiX OSN equipment supports various network level protection schemes, including the linear MSP.

Configuring a Non-Protection Chain

If the services on a chain do not need to be protected, you can configure the chain as a non-protection chain. In this case, all the timeslots on the chain can be used to transmit the services.

Prerequisites

  • The data of each NE must be configured and the fibers must be created on the U2000.
  • You must be an NM user with "network maintainer" authority or higher.

Procedure

  1. Choose Service > SDH Protection Subnet > Create Unprotected Chain from the Main Menu. Then, the Create Protection Subnet dialog box is displayed.
  2. Enter the name of the protection subnet. Generally, enter the default name, for example, NP_Chain_1.
  3. Select the capacity level of the protection subnet, for example, STM-4.
  4. Optional: Select Resource Sharing and Assigned by VC4 as needed.

    NOTE:
    • If multiple protection subnets uses one port of a board, you need to check the Resource Sharing check box. If different protection subnets use different ports of a board, do not check this check box.
    • Select the Assigned by VC4 option when there are different VC4s belonging to different protection subnets to achieve virtual optical path protection.

  5. Select the NEs where you need to create the non-protection chain. Double-click the NEs in the Main Topology and add them to the NE list on the left. At the same time, is displayed above the NE icons. You can cancel the selection by double-clicking the NE icons again to cancel the selection.
  6. Click Next. Set the parameters such as Physical Link Information.
  7. Click Finish to deliver the configuration data. Click Close in the Operation Result dialog box indicating that the operation succeeded.

Configuring a Non-Protection Ring

When services on a ring need not be protected, you can configure a non-protection (NP) ring. All timeslots on the ring can be used to transmit services.

Prerequisites

  • You are an NM user with Maintenance Group rights or higher.
  • The NE data must be configured, and fibers must be created properly.

Procedure

  1. Choose Service > SDH Protection Subnet > Create Unprotected Ring from the Main Menu. Then, the Create Protection Subnet dialog box is displayed.
  2. Enter the name of the protection subnet. Generally, the default name is used, for example, NP_Ring_1.
  3. Select the capacity level of the protection subnet, for example, STM-4.
  4. Select Resource Sharing and Assigned by VC4 according to the requirement.

    NOTE:
    • If multiple protection subnets uses one port of a board, you need to check the Resource Sharing check box. If different protection subnets use different ports of a board, do not check this check box.
    • Select the Assigned by VC4 option when there are different VC4s belonging to different protection subnets to achieve virtual optical path protection.

  5. Select the nodes that belong to the protection subnet that needs to be created. Double-click the selected NE in the Main Topology to add the NE to the NE list on the left. In addition, is displayed on the NE icon. If you need to cancel the selection, double-click the NE again.
  6. Click Next. Set the parameters such as Physical Link Information in the window.
  7. Click Finish to deliver the configuration data. Then, click Close in the Operation Result dialog box indicating that the operation succeeded.

Creating an MS Ring Protection Subnet

Generally, the MS ring protection is configured on the public ring network whose protection paths are used to transmit extra services. By running the APS protocol, it achieves the MS level protection.

Prerequisites

  • You are an NM user with Maintenance Group rights or higher.
  • The NE data must be configured and fibers must be created properly.
Precautions
  • The number of nodes in an MSP ring should not exceed 16.
  • Starting the protocol controller may interrupt the services.

Procedure

  1. Choose Service > SDH Protection Subnet > Create 2f_MS_SPRing from the Main Menu. Click OK in the dialog box that is displayed. Then, the Create Protection Subnet window is displayed.

    NOTE:
    • To create a four-fiber bidirectional MS shared protection ring, choose Service > SDH Protection Subnet > Create 4f_MS_SPRing from the Main Menu to display the related dialog box.
    • To create a two-fiber unidirectional MS dedicated protection ring, choose Service > SDH Protection Subnet > Create 2f_MS_DPRing from the Main Menu to display the related dialog box.
    • The following configuration considers two-fiber bidirectional MSP rings as an example.

  2. Enter the name of the protection subnet. Generally, the default name is used, for example, 2f_MS_SPRing_1.
  3. Select the capacity level of the protection subnet, for example, STM-4.

    NOTE:

    Create a two-fiber bidirectional MSP ring. The capacity of the ring can be set to STM-4, STM-16.

  4. Choose Resource Sharing and Assigned by VC4 according to the requirement.

    NOTE:
    • Resource Sharing indicates that a port is mapped into multiple protection subnets. When multiple protection subnets occupy the same port of a board, Resource Sharing must be selected. When different protection subnets occupy different ports of a board, Resource Sharing is not required. If multiple protection subnets use one port of a board, you need to select the Resource Sharing check box. If MSP Sharing is enabled, you can select the Resource Sharing check box to map a port of the board to multiple MSP subnets.
    • Assigned by VC4 indicates that different VC-4s belong to different protection subnets, thus achieving virtual optical path protection. For example, in the case of an STM-4 fiber, the first and second VC-4s are allocated for the STM-4 MS shared protection, and the third and fourth VC-4s are allocated for the non-protection.

  5. Select the nodes that belong to the protection subnet that needs to be created. Double-click the selected NE in the Main Topology to add the NE to the NE list on the left. In addition, is displayed on the NE icon. If you need to cancel the selection, double-click the NE again.

    NOTE:

    To facilitate maintenance, it is recommended that you add the nodes anticlockwise to the protection subnet.

  6. Set the attribute of each node to MSP Node.
  7. Click Next. Set the parameters such as Physical Link Information in the window.

    NOTE:
    • If there are multiple fibers between two NEs, select the required links from the Physical Link Information drop-down list.
    • If Assigned by VC4 is selected, you can Select the working and protection VC-4 timeslots according to the requirement.

  8. Click Finish to deliver the configuration data. Then, the Operation Result dialog box is displayed. Click Close.
  9. Choose Service > SDH Protection Subnet > Search for SDH Protection Subnet from the Main Menu. Select the created protection subnet, right-click and choose Protection Subnet Attributes from the shortcut menu.
  10. Click the Protection Subnet Maintenance tab to check whether the protocol controller is started. If the protocol controller is not started, select all the nodes of the protection subnet. Right-click and choose Start/Stop Protocol > Start from the shortcut menu. Click Yes in the dialog box that is displayed twice. Ensure that the status of all the values in the Protocol Controller column is Protocol Started.
  11. Click the Protection Subnet Parameters tab. Set WTR time and SD Condition according to the requirement. Click Apply to deliver the configuration data. The WTR time of all NEs in the same protection subnet should be the same.

    NOTE:

    The default value of WTR time is 600s.

Creating a Linear MS Protection Subnet

In a chain network, an NE can protect the services in different fiber sections after a linear MS protection subnet is created.

Prerequisites

  • You are an NM user with Maintenance Group rights or higher.
  • The NE data must be configured and fibers must be created properly.
Precautions
  • Starting the protocol controller may interrupt the services.
  • Fibers that are used for the linear MSP cannot be used by other protection subnets. That is, a linear MS protection subnet and other subnets cannot be used together to form virtual fibers.

Procedure

  1. Choose Service > SDH Protection Subnet > Create 1+1 linear MSP from the Main Menu. Then, the Create Protection Subnet window is displayed.

    NOTE:

    To create the M:N linear MS protection, choose Service > SDH Protection Subnet > Create M:N Linear MSP from the Main Menu. Then, the corresponding window is displayed.

    In the case of the M:N linear MS protection scheme, set the number of working links to N. M indicates the number of protection links and cannot be set manually. Currently, the value of M can be 1 only.

  2. Enter the name of the protection subnet. Generally, the default name is used, for example, 1+1_MSP_1.
  3. Select the capacity level of the protection subnet, for example, STM-4.

  4. Set Revertive Mode and Switching Mode according to the protection type and related requirements.

    NOTE:

    When setting the parameters, note the following points:

    • Revertive Mode indicates the handling strategy that is used after the faulty line is recovered. Non-Revertive: The service is not automatically reverted to the working channel after the faulty line is recovered. Revertive: The service is automatically reverted to the working channel after the faulty line is recovered.
    • Switching Mode indicates the switching strategy that is used after a fault occurs in the line. Single-ended switching: To protect services, a switching occurs at the receive end when the receive end is faulty and a switching occurs at the transmit end when the transmit end is faulty. Dual-ended switching: To protect services, a switching occurs at the receive and transmit ends when the receive end or transmit end is faulty.

  5. Select Resource Sharing and Assigned by VC4 as required.

    NOTE:
    • Resource Sharing indicates that a port is mapped into multiple protection subnets. When multiple protection subnets occupy the same port of a board, Resource Sharing must be selected. When different protection subnets occupy different ports of a board, Resource Sharing is not required.
    • Assigned by VC4 indicates that different VC-4s belong to different protection subnets in order to achieve MSP in some channels at a port.

  6. Select the nodes that belong to the protection subnet that needs to be created. Double-click the selected NE in the Main Topology to add the NE to the NE list on the left. In addition, is displayed on the NE icon. If you need to cancel the selection, double-click the NE again.
  7. Click Next. Set Physical Link Information of Working Link and Protection Link.

    NOTE:
    • In the Working Link section, click VC4 and set the working timeslot.
    • In the Protection Link section, click VC4 and set the protection timeslot.

  8. Click Finish to deliver the configuration data. Then, click Close in the Operation Result dialog box indicating that the operation succeeded.
  9. Choose Service > SDH Protection Subnet > Search for SDH Protection Subnet from the Main Menu. Select the created protection subnet, right-click and choose Protection Subnet Attributes from the shortcut menu.
  10. Click the Protection Subnet Maintenance tab to check whether the protocol controller is started.

    NOTE:

    If the protocol controller is not started, select all the NEs of the protection subnet. Right-click and choose Start/Stop Protocol > Start from the shortcut menu. Click Yes in the dialog box that is displayed twice. Ensure that the status of all the values in the Protocol Controller column is Protocol Started.

  11. Click the Protection Subnet Parameters tab. Set WTR time and SD Condition according to the requirement. Click Apply to deliver the configuration data.

    NOTE:

    The WTR time of all NEs in the same protection subnet should be the same.

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Updated: 2019-01-21

Document ID: EDOC1100020976

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