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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 ATM PWE3 Services

Configuring ATM PWE3 Services

This section describes the operation tasks for configuring ATM PWE3 services on the NMS.

Configuring ATM Interfaces

The OptiX OSN equipment supports the access to ATM services through E1 boards and provides different access modes at E1/VC12 level and Fractional E1 level. The access at Fractional E1 level achieves higher transmission efficiency by allowing multiple types of services (CES services and ATM services) to be transmitted over 32 E1/VC12 timeslots.

Prerequisites

  • You are an NM user with Operator Group rights or higher.
  • The DCN function of the port that carries ATM IMA services is disabled.
Background Information

For the OptiX OSN equipment, Frame Mode of the packets at the PDH interface or SDH interfaces can be 30-timeslot or 31-timeslot.

  • When Frame Mode is set to 30, timeslots 1-15 and 17-31 of an E1 frame are used to transport service data, and timeslots 0 and 16 cannot be used for fractional E1.
  • When Frame Mode is set to 31, timeslots 1-31 of an E1 frame are used to transport service data, and timeslot 0 cannot be used for fractional E1.

When creating an IMA group of the fractional E1 level, create a serial port of the 64K Timeslot level. An IMA group of the E1/VC12 level can be directly created.

Procedure

  • Configure an interface at the Fractional E1 level.

    1. In the NE Explorer, select an NE and choose Configuration > Packet Configuration > Interface Management > PDH Interface from the Function Tree.
    2. In the General Attributes tab, select 4-MD1-1(PORT-1) and 4-MD1-1(PORT-2). Set the Port Mode to Layer 1, and click Apply.
    3. Click Advanced Attributes tab, set Frame Format and Frame Mode according to networking planning. Then, click Apply.
    4. Choose Configuration > Packet Configuration > Interface Management > Serial Interface from the Function Tree. Click New in the Basic Attributes tab, and the New Serial Interface dialog box is displayed.
    5. In the New Serial Interface dialog box, set the Level, Used Board, Used Port, and 64K Timeslot fields, and then click OK. Create serial interfaces of 4-MD1-1(PORT-1) and 4-MD1-1(PORT-2).
    6. Select the created serial interfaces, set Port Mode to Layer 2, and then click Apply.
    7. Choose Configuration > Packet Configuration > Interface Management > ATM IMA Management from the Function Tree. Then, click Configuration in the Binding tab, and the Bound Path dialog box is displayed.
    8. Select the bound board and port, select Fractional E1 for the Level field, and select Available Resources. Then, click to add the bound board and port to Selected Bound Paths.
    9. Click Apply.
    10. In the IMA Group Management tab, select the IMA group 4-MD1-1(PORT-1). Set the parameters such as IMA Transmit Frame Length and IMA Symmetry Mode according to the network planning. Then, set IMA Protocol Enable Status to Enabled. Click Apply.
    11. On the ATM Interface Management tab, click the IMA group 4-MD1-1(PORT-1). Then, set the parameters such as MAX. VPI, MAX. VCI for the ports according to the network planning. Click Apply.

  • Configure an interface at the E1 level.

    1. In the NE Explorer, select an NE and choose Configuration > Packet Configuration > Interface Management > PDH Interface from the Function Tree.
    2. In General Attributes tab, select 4-MD1-1(PORT-1) to 4-MD1-2(PORT-1). Set Port Mode to Layer 2, and click Apply.
    3. In Advanced Attributes tab, set Frame Format and Frame Mode according to networking planning. Then, click Apply.
    4. Choose Configuration > Packet Configuration > Interface Management > ATM IMA Management from the Function Tree. Then, click Configuration in the Binding tab, and the Bound Path dialog box is displayed.
    5. Select E1 for the Level field for the available bound path, and select ports in Available Resources. Then, click to add the bound board and port to Selected Bound Paths
    6. Click Apply.
    7. On the IMA Group Management tab, select the IMA group 4-MD1-1(PORT-1). Set the parameters such as IMA Transmit Frame Length and IMA Symmetry Mode according to the network planning. Then, set IMA Protocol Enable Status to Enabled. Click Apply.

Result

When creating the IMA groups at both ends of the interconnected equipment is complete, you can query the IMA group status on the U2000 to check whether the IMA groups are in proper status.

  1. In the NE Explorer, click an NE and choose Configuration > Packet Configuration > Interface Management > ATM IMA Management from the Function Tree.
  2. In the IMA Group States tab, click Query. Check Near-End Group Status, Far-End Group Status, Number of Transmit Links, and Number of Receive Links.
    • If Near-End Group Status and Far-End Group Status are displayed as Operational, the negotiation of the IMA groups succeeded.
    • If Near-End Group Status and Far-End Group Status are displayed as other status, handle the anomaly with reference to Table 3-308.
  3. In the IMA Link Status tab, click Query. Check Near-End Receiving Status, Near-End Transmitting Status, Far-End Receiving Status, and Far-End Transmitting Status.
    • If Near-End Receiving Status, Near-End Transmitting Status, Far-End Receiving Status, and Far-End Transmitting Status are displayed as Usable, it indicates that the IMA link is normal.
    • If Near-End Receiving Status, Near-End Transmitting Status, Far-End Receiving Status, and Far-End Transmitting Status are displayed as Unusable, it indicates that the IMA link is faulty. For details on the IMA link status parameters, see Table 3-309.

Table 3-308 lists the IMA group status parameters.

Table 3-308  IMA group status parameters
Near-End/Far-End Group Status Description Suggestion
Start-Up This end is in the Start-Up status and is waiting to be indicated that the far-end is also in the Start-Up status. Start the IMA protocol for the opposite IMA group and check whether the IMA groups are normal.
Start-Up-ACK This is a transitional state. When both the near-end and far-end groups start-up, they move to this state. The IMA groups are in the progress of negotiation. Wait for 500 ms and then check whether the IMA groups are normal.
Config-Aborted This state is entered when the far-end tries to apply unacceptable configuration parameters. Check whether the parameter settings are consistent for the IMA groups at both ends. If not, re-set the inconsistent parameters to ensure that all the parameter settings are consistent for the IMA groups at both ends.
Insufficient-Links The status is displayed when the parameter settings for the IMA groups at both ends are consistent but the link resources are insufficient. In this case, the number of activated links is less than the minimum number of activated links for an IMA group. When the fault of the IMA link is rectified, check whether the IMA groups are in proper status.
Blocked The group is blocked. The group can be blocked for maintenance purposes while sufficient links are Active in both transmitting and receiving directions. -
Operational The group is not inhibited and has sufficient links in both transmitting and receiving directions. -

Table 3-309 lists the IMA link status parameters.

Table 3-309  IMA link status parameters
Receive/Transmit Status Description Suggestion
Unusable The status is displayed when an IMA link is added to an IMA group but the IMA link is not available because of fault-caused or manual suppression. When the fault of the IMA link is rectified, check whether the IMA links are in proper status.
Usable This status indicates that the link is availably and it is displayed when you are waiting for the remote receive link to be activated. In this case, this link is not added to the cyclical transmitting process of the IMA group. -
Active This status indicates that the link is activated. If service cells accessed, they can be transmitted. This link is added to the cyclical transmitting process of the IMA group. -

Configuring ATM CoS Mapping

Configure the mapping between ATM service types and PHB service classes to ensure end-to-end QoS for ATM services.

Prerequisites

You are an NM user with Operator Group rights or higher.

Background Information

The OptiX OSN equipment supports the flexible mapping between ATM service types and PHB service classes. Table 3-310 lists the default ATM CoS mapping.

Table 3-310  Mapping between ATM service types and PHB service classes
Service Type PHB Service Class
UBR BE
CBR EF
RT-VBR AF31
NRT-VBR AF21
UBR+ AF11
PORT-TRANS AF11
NOTE:

The default ATM CoS mapping cannot be modified or deleted.

Procedure

  1. In the NE Explorer, click the NE and choose Configuration > Packet Configuration > QoS Management > Diffserv Domain Management > ATM CoS Mapping Configuration from the Function Tree.
  2. Click Create. The Create ATM CoS Mapping Relation dialog box is displayed.
  3. Set the following parameters in the dialog box.

    • Mapping Relation ID
    • Mapping Relation Name
    • Mapping between the service type and CoS level


  4. Click OK.

Creating the ATM Policy

Create the ATM policy to configure the service type and bandwidth for the ATM traffic.

Prerequisites

You are an NM user with Operator Group rights or higher.

Procedure

  1. In the NE Explorer, select an NE and choose Configuration > Packet Configuration > QoS Management > Policy Management > ATM Policy from the Function Tree.
  2. Click New. The Create ATM Policy dialog box is displayed.
  3. Set the following parameters in the dialog box.

    NOTE:

    When Policy ID and name is set, select one from the drop-down list that contains five levels of ATM service policies. Alternatively, enter a policy name.

    The service encapsulated in AAL5 is sliced into cells. Enable Traffic Frame Discarding Flag determines whether to discard cells or to discard the complete AAL5 frames for the cells. When Enable Traffic Frame Discarding Flag is set to Enabled, the equipment will discard the complete AAL5 frames for the cells.

    The Scr, Pcr, MBS, and CDVT bucket parameters are functional only when UPC/NPC is enabled for the ATM policy.

    • Policy ID and name
    • Service type
    • Traffic parameter
    • Frame discarding label
    • UPC/NPC

  4. Click OK.

Creating an ATM Service by Using the Trail Function

This topic describes how to use the trail function to create an ATM PWE3 service tunnel for ATM signal transmission. The trail function allows you to fast configure the source and sink nodes of an ATM service and PW attributes.

Prerequisites

  • You are an NM user with Operator Group rights or higher.
  • ATM interfaces are configured. If IMA services are transmitted, an IMA group is configured.
  • An ATM policy is configured.
  • An MPLS tunnel is used.

Procedure

  1. Choose Service > PWE3 Service > Create PWE3 Service from the main menu.
  2. Set the parameters on the Attributestab.

    NOTE:
    • Use a template to configure a service. Specifically, select a template in the Service Template field or personally create another template.
    • Set Service Type to ATM.
    • If you set Protection Type to PW APS Protection, select Single Source and Dual Sink or Dual Source and Single Sink on the Node List. You need to configure one source node and two sink nodes for Single Source and Dual Sink, and two source nodes and one sink node for Dual Source and Single Sink. The two PWs are the working PW and protection PW. In addition, PW APS Protection can be set to Single Source and Single Sink.

  3. Select the source and sink NEs for a service.
    1. Click Configure Source And Sink. A dialog box is displayed.
    2. Select a source NE from Physical Root on the left. Then, the selected NE is displayed in the upper right pane.
    3. In the right portion of NE Panel, all slots and available boards of an NE are displayed. According to the required service type, select an appropriate board.
    4. Select an interface.
    5. Set the service access interface attributes. Then, click Add Node. In the lower portion of the window, the new source and sink NEs are displayed, click OK.
    6. Configure the sink NE, protection NE and transit NE with the same method to align with different protection types.
    7. To configure multiple ATM connections for an ATM service at the same time, select multiple ports for an NE in the same way.

    NOTE:

    The same configuration method is applicable to the sink NE, transit NE, and source NE. This topic considers the configuration of a source NE as an example.

  4. Optional: Click Configure Source And Sink, select the Unterminated in the left, specify the LSR ID of an unterminated node, and click Add Node. In the lower portion of the window, the unterminated source and sink NEs are displayed. Then, click OK.

    NOTE:

    On a network, if the equipment at one end of a service can be managed by the U2000, and the equipment at the other end of the service is from another vendor and therefore cannot be managed by the U2000, select Unterminated to set the LSR ID at the opposite end of the service.

    Currently, the OptiX OSN equipment in the same management domain can be used to configure unterminated trails.

    If Protection Type is PW APS Protection, the unterminated node cannot be set.

  5. Optional: Click Configure PW Switch Node to add working and protection transit NEs between the source NE and sink NE.
  6. Set parameters for the source and sink NEs that are displayed in Node List. To view the topology of a configured service, click the Service Topology tab in the upper-right area.
  7. Set parameters in the PW pane in the lower left portion of the window.

    NOTE:

    PW ID can be automatically allocated.

    Signaling Type can only be set to Static. Forward Label and Reverse Label can be assigned automatically or manually.

    Forward Type and Reverse Type can be set to Static Binding. In this case, manually specify a tunnel in the Forward Tunnel field.

    You may also set the forward tunnel and reverse tunnel by clicking the Service Topology tab in the upper right area. Right-click a tunnel between the source NE and sink NE, and choose Select Forward Tunnel or Select Reverse Tunnel from the shortcut menu. In the dialog box that is displayed, select the tunnel for static binding.

  8. Click ATM Link. In the dialog box that is displayed, add the ATM connection, and set relevant parameters of the ATM connection.



    NOTE:

    After you configure VPI/VCI of the source and sink, the U2000 assigns the transit VPI/VCI automatically.

  9. Optional: Click Detail. A pane is displayed in the lower right area.
  10. Optional: Click the PW QoS tab to configure the global template of a PW. Alternatively, select one of the templates that are configured in the Global QoS Policy Template field, and set parameters.
  11. Optional: Click the Advanced PW Attribute tab to set parameters for a PW.
  12. Optional: If the Protection Type is PW APS Protection, click Protection Parameter to set the protection parameters.
  13. Select the Deploy check box, and click OK.

    NOTE:

    If you clear the Deploy check box, the configuration data information is saved only on the U2000. If you select the Deploy check box, the configuration data information is saved on the U2000 and applied to NEs. By default, the Deploy check box is selected.

    When you select the Deploy and Enable check boxes, a service is available on NEs only when enabled.

Follow-up Procedure

After the service is created successful, the service is displayed in the PWE3 service management window.

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Updated: 2019-01-21

Document ID: EDOC1100020976

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