Monitoring Performance Management Statistics
The following topics show how to monitor the performance statistics for E-Line and E-LAN 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 E-Line and E-LAN 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.
Although you can start or stop the collection of PM statistics without a predefined event script made available on the corresponding devices by selecting OAM > Y1731 > Start or Stop from the Tasks pane in Monitor mode of Service view (no error is displayed and the start or stop of Y1731 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 Y1731 PM statistics. Otherwise, although the operation does not display an error in the GUI, no backend processing occurs.
Monitoring Statistics for an E-Line 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 E-Line service:
Select Service View from the View Selector. The workspaces that are applicable to routing and tunnel services are displayed.
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.
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.
Click the plus sign (+) beside E-Line Services to view the E-Line service orders. Select the E-Line service order for which you want to monitor performance statistics.
Alternatively, click the plus sign (+) beside E-LAN Services to view the E-LAN service orders. Select the E-LAN service order for which you want to monitor performance statistics.
From the tasks pane, select OAM > Y1731 > 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 action is enabled only if the CFM is enabled in the selected E-Line service. Always perform a functional audit before monitoring the statistics. The Start action is disabled if the functional audit status of a service is Down.
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
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.
To terminate the performance monitoring task, select OAM > Y1731 > 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 to 1.0 or if you are upgrading from any older version of Connectivity Services Director to Connectivity Services Director 5.2, you must stop any performance monitoring and restart the collection of Y1731 PM statistics on the endpoints. A seamless migration of Y1731 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 an E-LAN 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 E-LAN Service:
Select Service View from the View Selector. The workspaces that are applicable to routing and tunnel services are displayed.
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.
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.
Click the plus sign (+) beside E-Line Services to view the E-Line service orders. Select the E-Line service order for which you want to monitor performance statistics.
Alternatively, click the plus sign (+) beside E-LAN Services to view the E-LAN service orders. Select the E-LAN service order for which you want to monitor performance statistics.
From the tasks pane, select OAM > Y1731 > Start. The Monitor Performance Statistics window is displayed.
Note The OAM > Y1731 > Start action is enabled only if the CFM is enabled in the selected E-LAN service. Always perform a functional audit before monitoring the statistics. The OAM > Y1731 > Start action is disabled if the functional audit status of a service is Down.
Note You can Start and Stop the PM Statistics collection functionality on multiple pairs of devices at a time. But, you cannot Start the PM Statistics collection functionality on pairs in the reverse order simultaneously.
For example, if E-Lan service has four OAM attached devices like A, B, C and D, you can start the PM statistics functionality between the following multiple pairs of devices:
Device A and Device B
Device A and Device C
Device A and Device D
Device B and Device C
Device B and Device D
Device C and Device D
But you cannot start PM Statistics functionality between the following multiple pairs of devices simultaneously.
Device D and Device A
Device C and Device A
Device B and Device A
Device C and Device B
Device D and Device B
Device D and Device C
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.
Click OK.
To terminate the performance monitoring task, select OAM > Y1731 > 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 or if you are upgrading from any older version of Connectivity Services Director to Connectivity Services Director 5.2, you must stop any performance monitoring and restart the collection of Y1731 PM statistics on the endpoints. A seamless migration of Y1731 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.