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    Monitoring Performance Management Statistics

    The following topics show how to monitor the performance statistics for point-to-point and VPLS services:

    You can employ the ITU-T Y.1731 standard-compliant Ethernet loss measurement (ETH-LM), Ethernet synthetic loss measurement (ETH-SLM), and Ethernet delay measurement (ETH- DM) capabilities to analyze and examine the operating efficiency and performance status. These performance monitoring functionalities can be run for P2P and VPLS services. You can start and stop the collection of performance monitoring (PM) statistics on the services that you want to monitor. The retrieval and computation of statistical details is performed using SNMP MIBs.

    A predefined event script , Y1731_PM.slax, is available on the Scripts page of the Junos Space Platform GUI, which displays all the scripts imported into the Junos Space Platform database (accessible by selecting Network management platform >Images and scripts > Scripts). This script needs to be downloaded on devices. Whenever you trigger the PM mechanism from the Connectivity Services Director GUI, an event is initiated, which in turn causes the SLAX script to be run. The event continues to run the script until the event is stopped. The event runs the script at intervals of 5 minutes. The monitoring framework is used to consolidate and display the retrieved counters and values. You can start the PM collection utility only on one pair of devices at a time. You cannot start the PM collection functionality on multiple pairs of devices simultaneously.

    Note: Although you can start or stop the collection of PM statistics without a predefined event script made available on the corresponding devices by selecting PM Statistics > Start or Stop from the Tasks pane in Monitor mode of Service view (no error is displayed and the start or stop of PM statistics collection is successful), you must ensure that the event script is present on the devices before you trigger the mechanism for collection of PM statistics. Otherwise, although the operation does not display an error in the GUI, no backend processing occurs.

    Monitoring Statistics for a Point-to-Point Service

    You can start a performance monitoring operation on a service to diagnose the working efficiency and operating quality from the Monitor mode in Service View of Connectivity Services Director.

    To monitor the statistics for the point-to-point service:

    1. Select Service View from the View Selector. The workspaces that are applicable to routing and tunnel services are displayed.

    2. From the Junos Space user interface, click the Monitor icon on the Connectivity Services Director banner. The functionalities that you can configure in this mode are displayed in the task pane.

    3. From the Service View pane, which is the left pane in the window, click the plus sign (+) next to Network Services to expand the tree and display the different service types that you can configure.

    4. Click the plus sign (+) beside P2P Services to view the P2P service orders. Select the P2P service order for which you want to monitor performance statistics.

      Alternatively, click the plus sign (+) beside VPLS Services to view the VPLS service orders. Select the VPLS service order for which you want to monitor performance statistics.

    5. From the tasks pane, select PM Statistics > Start. The Monitor Performance Statistics window is displayed.

      Note: If a CFM profile is not associated with the service, an informational message is displayed stating that an OAM or CFM profile must be mapped with the service.

      Note: The Start PM Statistics action is enabled only if the CFM is enabled in the selected point-to-point service. Always perform a functional audit before monitoring the statistics. The Start PM Statistics action is disabled if the functional audit status of a service is Down.

    6. Fill in the fields as indicated in the table.

      Field

      Action

      Source Device

      Select a local device from the list.

      Destination Device

      Select a remote device from the list.

      Request Count

      Specify the number of frames to be sent to a specific peer MEP.

      Range: 1 through 65,535 frames

      Default: 10 frames

      Delay (seconds)

      Specify the wait interval for the frame transfer.

      Range: 1 through 255 seconds

      Default: 1 second

      Frame Priority (802.1p)

      Select the dot1p (IEEE 802.1p or packet classification layer 2 headers) priority of continuity-check and link-trace packet.

      Range: 0 through 7

      Default: 0

      Monitor Statistics

      Select one of the following check boxes:

      • Two-Way delay

      • One-Way delay

      • Loss

    7. Click OK.

      Note: When you stop PM statistical collection, a popup dialog box is displayed, prompting you to confirm whether you want to stop PM statistical collection. Click OK to confirm the action. Click Cancel to discard the changes.

    This action initiates a statistics collection on the endpoint device. The View PM Statistics action is enabled on successful initiation of the statistics.

    To terminate the performance monitoring task, select PM Statistics > Stop from the tasks pane for the selected service.

    If you are upgrading from the older version of Services Activation Director to Connectivity Services Director 1.0, you must stop any performance monitoring and restart the collection of PM statistics on the endpoints. A seamless migration of PM statistics from Services Activation Director is not supported because the mechanism used to retrieve and store the PM statistical details is different between Services Activation Director and Connectivity Services Director. While utility MIBs (OpenNMS for SNMP trap collection and correlation) and remote procedure calls (RPC) are used in Services Activation Director, only utility MIBs are used in Connectivity Services Director to collect the data. Also, event scripts are different between the two applications, which causes the object ID to be changed.

    Monitoring Statistics for a VPLS Service

    You can start a performance monitoring operation on a service to diagnoze the working efficiency and operating quality from the Monitor mode in Service View of Connectivity Services Director.

    To monitor the statistics for the VPLS Service:

    1. Select Service View from the View Selector. The workspaces that are applicable to routing and tunnel services are displayed.

    2. From the Junos Space user interface, click the Monitor icon on the Connectivity Services Director banner. The functionalities that you can configure in this mode are displayed in the task pane.

    3. From the Service View pane, which is the left pane in the window, click the plus sign (+) next to Network Services to expand the tree and display the different service types that you can configure.

    4. Click the plus sign (+) beside P2P Services to view the P2P service orders. Select the P2P service order for which you want to monitor performance statistics.

      Alternatively, click the plus sign (+) beside VPLS Services to view the VPLS service orders. Select the VPLS service order for which you want to monitor performance statistics.

    5. From the tasks pane, select PM Statistics > Start. The Monitor Performance Statistics window is displayed.

      Note: The Start PM Statistics action is enabled only if the CFM is enabled in the selected VPLS service. Always perform a functional audit before monitoring the statistics. The Start PM Statistics action is disabled if the functional audit status of a service is Down.

    6. Fill in the fields as indicated in the table.

      Field

      Action

      Source Device

      Select a local device from the list.

      Destination Device

      Select a remote device from the list.

      Request Count

      Specify the number of frames to be sent to a specific peer MEP.

      Range: 1 through 65,535 frames

      Default: 10 frames

      Delay (seconds)

      Specify the wait interval for the frame transfer.

      Range: 1 through 255 seconds

      Default: 1 second

      Frame Priority (802.1p)

      Select the 802.1p priority of continuity-check and link-trace packet.

      Range: 0 through 7

      Default: 0

      Monitor Statistics

      Select Two-Way delay.

    7. Click OK.

    This action initiates a statistics collection on the endpoint device. The View PM Statistics action is enabled on successful initiation of the statistics.

    To terminate the performance monitoring task, select PM Statistics > Stop from the tasks pane for the selected service.

    If you are upgrading from the older version of Services Activation Director to Connectivity Services Director 1.0, you must stop any performance monitoring and restart the collection of PM statistics on the endpoints. A seamless migration of PM statistics from Services Activation Director is not supported because the mechanism used to retrieve and store the PM statistical details is different between Services Activation Director and Connectivity Services Director. While utility MIBs (OpenNMS for SNMP trap collection and correlation) and remote procedure calls (RPC) are used in Services Activation Director, only utility MIBs are used in Connectivity Services Director to collect the data. Also, event scripts are different between the two applications, which causes the object ID to be changed.

    Modified: 2017-09-13