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    Creating LFM Profiles

    You can configure threshold values for fault events that trigger the sending of link event TLVs when the values exceed the threshold. To set threshold values for fault events on an interface, you can configure the event threshold properties. You can also configure OAM threshold values within an action profile and apply the action profile to multiple interfaces. You can configure Ethernet OAM either on an aggregate interface or on each of its member links. However, we recommend that you configure Ethernet OAM on the aggregate interface, and this will internally enable Ethernet OAM on the member links.

    You can perform the following tasks with the Manage Profiles page for LFM profiles:

    • Create an LFM profile and define the actions to be performed for the corresponding events.
    • Modify an existing LFM profile to meet the network needs and deployment scenarios.
    • Delete an existing LFM profile.

    Creating an LFM Profile

    A wizard is available to create and modify a service order in an intuitive and easily-navigable format. The settings that you can configure in the service order are organized in separate pages of the wizard, which you can launch by clicking the appropriate buttons at the top of the Create or Edit an LFM Profile page. Alternatively, you can proceed to the corresponding setting-related pages by clicking the Back and Next buttons at any point in the wizard during the creation of the service order.

    To create an LFM profile:

    1. From the View selector, select Device View.

      The workspaces that are applicable to this view are displayed.

    2. From the Junos Space user interface, click the Build 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 View pane, click the plus sign (+) beside the My Network item in the View pane to expand the tree and select the device node you want for which you want to create the LFM profile.

      The device type selected within the device model tree is highlighted.

    4. From the Tasks pane, select the name of the profile that you want to create. To create an LFM profile for a device, select Profiles > OAM.

      The Manage OAM Profiles page is displayed.

    5. Click the New icon at the top of the page.

      The Select Profile Type dialog box is displayed, listing the types of OAM profiles that you can create for the selected device.

    6. Select the LFM Profile radio button from the Select Profile Type dialog box.

      The General Settings page of the LFM Profile creation wizard is displayed.

    Configuring the General Settings of an LFM Profile

    To define the attributes of an LFM profile:

    1. On the General Settings page of the wizard, fill in the fields as indicated in the table.

      Field

      Action

      Name

      Type a unique name that identifies an LFM profile.

      Range: 1 through 50 characters. Space and special characters are allowed.

      Comments

      Type a comment that identifies an LFM profile.

      Range: 1 through 200 characters. Space and special characters are allowed.

      Link discovery

      Select the discovery mode used for IEEE 802.3ah OAM support from the list. The discovery process is triggered automatically when OAM 802.3ah functionality is enabled on a port. Link monitoring is done when the interface sends periodic OAM PDUs.

      When the IEEE 802.3ah OAM protocol is enabled on a physical interface, the discovery process is automatically triggered. The discovery process permits Ethernet interfaces to discover and monitor the peer on the link if it also supports the IEEE 802.3ah standard. You can specify the discovery mode used for IEEE 802.3ah OAM support. The discovery process is triggered automatically when OAM IEEE 802.3ah functionality is enabled on a port. Link monitoring is done when the interface sends periodic OAM PDUs.

      Possible values are:

      • Active—In active mode, the interface discovers and monitors the peer on the link if the peer also supports IEEE 802.3ah OAM functionality.
      • Passive—In passive mode, the peer initiates the discovery process. Once the discovery process is initiated, both sides participate in discovery.

      PDU interval

      Specify an OAM PDU interval in the range 100-1000 milliseconds. The default sending interval is 1000 milliseconds.

      OAM PDUs are slow protocol frames that conforms to IEEE 802.3 and contains OAM control and status information, which is used to monitor, test, and troubleshoot links.

      OAM PDUs also carry notification of non-critical link events such as errored frame event, errored frame period event, errored frame seconds summary event, and organization-specific event.

      PDU threshold

      Specify the number of OAM PDUs that an interface can miss before the link between peers is considered down. The threshold value range is from 3 through 10. The default is three PDUs.

      Remote loop-back

      Select this check box to change a remote data terminal equipment (DTE) into loop-back mode.

      You can configure the software to set the remote DTE into loopback mode on the IQ2 and IQ2-E Gigabit Ethernet interfaces and Ethernet interfaces on the MX Series routers.

      Junos OS can place a remote DTE into loopback mode (if remote-loopback mode is supported by the remote DTE). When you place a remote DTE into loopback mode, the interface receives the remote-loopback request and puts the interface into remote-loopback mode. When the interface is in remote-loopback mode, all frames except OAM PDUs are looped back without any changes made to the frames. OAM PDUs continue to be sent to the management plane and processed.

      Action profile

      Select an LFM action profile from the list.

      Click Create to create and publish an action profile. A dialog box is displayed that enables you to specify the action profile settings. When you save the action profile from the dialog box, the action profile is added to the Action Profile list.

      Click View to view the details of the action profile settings in a pop-up dialog box. Click Close after you complete viewing the settings.

      Event Threshold

      Configure threshold values on an interface for the local errors that trigger the sending of link event TLVs.

      Frame Error

      Specify a threshold for sending frame error events or taking the action specified in the action profile. Specify a value in the range 1 through 100.

      A frame error is any frame error on the underlying physical layer. The threshold is reached when the number of frame errors reaches the configured value within the window. The window or period during which frame errors are counted is 5 seconds or multiples of it (with a maximum value of 1 minute). This window denotes the duration as intervals of 100 milliseconds, encoded as a 16-bit unsigned integer. This window is not configurable in Junos OS. According to the IEEE 802.3ah standard, the default value of the frame-errors window is 1 second. This window has a lower bound of 1 second and an upper bound of 1 minute.

      Frame Period

      Specify a threshold for receiving frame period events or taking the action specified in the action profile. Specify a value in the range 1 through 100.

      A frame error is any frame error on the underlying physical layer. The frame period threshold is reached when the number of frame errors reaches the configured value within the period window. The default period window is the number of minimum-size frames that can be transmitted on the underlying physical layer in 1 second. The window is not configurable.

      Frame Period summary

      Specify a threshold for receiving frame period summary events or taking the action specified in the action profile. Specify a value in the range 1 through 100.

      An errored frame second is any 1-second period that has at least one errored frame. This event is generated if the number of errored frame seconds is equal to or greater than the specified threshold for that period window. The default window is 60 seconds. The window is not configurable.

      Symbol Period

      Specify a threshold for receiving symbol period events or taking the action specified in the action profile. Specify a value in the range 1 through 100.

      A symbol error is any symbol code error on the underlying physical layer. The symbol period threshold is reached when the number of symbol errors reaches the configured value within the period window. The default period window is the number of symbols that can be transmitted on the underlying physical layer in 1 second. The window is not configurable.

      Negotiation Options

      Enable and disable the IEEE 802.3ah OAM features for Ethernet interfaces.

      Allow remote loop-back

      Select this check box to allow local port to be changed to loop-back mode.

      Activation of OAM remote loopback may result in data frame loss.

      You can allow a remote DTE to set a local interface into remote loopback mode on IQ2 and IQ2-E Gigabit Ethernet interfaces and all Ethernet interfaces on the MX Series routers and EX Series switches. When a remote-loopback request is sent by a remote DTE, the Junos OS places the local interface into loopback mode. When an interface is in loopback mode, all frames except OAM PDUs are looped back without any changes to the frames. OAM PDUs continue to be sent to the management plane and processed. By default, the remote loopback feature is not enabled.

      No allow link events

      Select this check box to prevent the periodic sending of PDU frames and symbol errors. When you enable this functionality, the monitoring and sending of PDUs containing link event TLVs in periodic PDUs are disabled.

    2. From the General Settings page of the wizard, click Next to proceed to the final step of the wizard, which is to review the configured settings. The Review page of the wizard is displayed.

      Alternatively, click Done to save the LFM profile

    The LFM profile is saved in the database and appears on the Manage OAM Profiles inventory page. You can then open the Actions menu to perform additional tasks, such as deleting or publishing service definitions .

    Reviewing the Configured LFM Profile Settings

    The Review page of the LFM Profile creation and modification wizards enable you to view and evaluate the service parameters and components you configured in preceding steps or pages of the wizard. This page provides a comprehensive, single-page view of all the service elements configured in the different pages of the wizard. You can either click the buttons corresponding to the various settings at the top of the wizard page to directly traverse to the page you want to modify or click the navigation buttons at the bottom of the wizard page to go to the different pages of the wizard.

    To review the configured LFM profile settings:

    1. Click Review to view the defined parameters. You can examine and modify the created service order parameters. Alternatively, click the corresponding buttons at the top of the wizard page to navigate to the specific pages pertain to the settings you want to modify.
    2. Click Edit next to the section that contains the parameter you want to modify. You are navigated to the corresponding page of the wizard in which the parameter settings are defined.
    3. Click Done to save the profile. Click Back to return to the previous page of the wizard; else click Cancel to discard the changes. The service order inventory window appears.

      The action profile is saved in the database and appears in the Manage OAM Profiles inventory page. You can then use the icons that are present on that page to perform additional tasks, such as deleting or modifying action profiles, and publishing or unpublishing action profiles.

      Note: You can link the action profile to the service definition.

    Modifying an LFM Profile

    On the Manage OAM Profiles page, you can view the collection of previously configured OAM profiles, such as LFM profiles, LFM profiles, RFC2544 test profiles, CFM action profiles, LFM action profiles, or SLA iterator profiles.

    To modify an LFM profile:

    1. From the View selector, select Device View.

      The workspaces that are applicable to this view are displayed.

    2. From the Junos Space user interface, click the Build 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 View pane, click the plus sign (+) beside the My Network item in the View pane to expand the tree and select the device node you want for which you want to create the LFM profile.

      The device type selected within the device model tree is highlighted.

    4. From the Tasks pane, select the name of the profile that you want to create. To create an LFM profile for a device, select Profiles > OAM.

      The Manage OAM Profiles page is displayed.

    5. Select the check box next to the LFM profile you want to modify, and click the Edit icon above the table of listed OAM profiles.

      The Modify LFM Profile wizard is displayed, with the General Settings and Review buttons.

      Note: The Service Type field can be used to identify the different LFM profiles that are present in the Connectivity Services Director database.

    6. Edit the parameters as needed.
    7. Click Save to save the modified settings.

    Viewing an LFM Profile Details

    From the Manage OAM Profiles page, you can view the configuration attributes and properties defined for an LFM profile. In certain network deployments, before you want to create or modify an LFM profile, you might require the previously configured LFM profile details to be viewed for optimal and effective configuration.

    Note: The Service Type field can be used to identify the different LFM profiles that are present in the Connectivity Services Director database.

    1. From the View selector, select Device View.

      The workspaces that are applicable to this view are displayed.

    2. From the Junos Space user interface, click the Build 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 View pane, click the plus sign (+) beside the My Network item in the View pane to expand the tree and select the device node you want for which you want to create the LFM profile.

      The device type selected within the device model tree is highlighted.

    4. From the Tasks pane, select the name of the profile that you want to create. To create an LFM profile for a device, select Profiles > OAM.

      The Manage OAM Profiles page is displayed.

    5. Double-click the LFM profile for which you want to view.

      The LFM Profile Details window is displayed.

      It has two the following two tabs:

      • LFM Profile Details— Displays action profile configuration
      • Device Details— Displays list of devices attached to this action profile
    6. After you complete viewing the profile parameters, click Close to close the details window and return to the profiles listing page.

      Note: The OAM Profiles landing page displays the list of LFM profiles only in tabular view.

    Modified: 2016-03-02