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    Adding SLA/CFM to a Service

    Use this procedure to add SLA/CFM to UNI ports in an Ethernet service.

    CFM provisioning

    In an Ethernet network consisting only of BTI7000 Series network elements, Y.1731 setup is performed automatically by the NEs. You do not need to use PSM to configure CFM.

    In a mixed Ethernet network consisting of BTI7000 Series, BTI700 Series, and/or BTI800 Series network elements, or in an Ethernet network consisting of non-Juniper Networks network elements, Y.1731 setup is partially performed by the NEs. You can use PSM to complete the CFM provisioning.

    In all cases, you cannot use PSM to change the settings for the Local MEG and MEP, but you can use PSM to manually add and/or remove remote MEPs. Manually adding and/or removing remote MEPs is required when interworking with non-Juniper Networks network elements. Where applicable, PSM automatically sets the MEG name, MEG level, and MEP IDs for each MEP provisioned on a UNI.

    There is a single MEP per switch in the BTI7000 Series and BTI700 Series equipment, and a single MEP per port in the BTI800 Series equipment. The single MEP per switch limits you to having only one UNI on the switch belonging to an SLA pair. See Table 1.

    Note: There is a limit to the number of MEPs and MIPs supported on a BTI810 network element. See the BTI800 Series Technical Product Guide for details. A single MIP counts as 2 towards that limit.

    When a UNI is removed from a service, the corresponding MEP is automatically removed. When an NNI is removed from a service, the corresponding MIP is removed. When a service is deleted, the MEG is automatically removed.

    SLA provisioning

    SLA provisioning is performed by specifying SLA Initiator/Responder pairs in the SLA/CFM tab in the Ethernet Service Activation screen. Table 1 shows the constraints when configuring SLAs on different endpoints.

    Table 1: SLA Provisioning Constraints

    NE Type

    Notes

    BTI7000 Series

    A UNI port can be configured as either an initiator or a responder.

    A UNI port can be the initiator for up to 4 responder ports.

    Only one UNI port per switch can be configured on an SLA pair.

    A UNI port that is an initiator cannot be a responder for the same remote port, but it can be a responder for another remote port.

    BTI700 Series excluding the BTI718E

    A UNI port can only be configured as a responder, not an initiator.

    Only one UNI port per switch can be configured on an SLA pair.

    BTI718E

    A UNI port can be configured as either an initiator or a responder.

    A UNI port can be the initiator for multiple responders.

    Only one UNI port per switch can be configured on an SLA pair.

    A UNI port that is an initiator cannot be a responder for the same remote port, but it can be a responder for another remote port.

    BTI800 Series

    A UNI port can be configured as either an initiator or a responder.

    A UNI port can be the initiator for only one responder port.

    Multiple UNI ports per switch can be configured for SLA pairs.

    A UNI port that is an initiator can only be a responder for the same remote port. It cannot be a responder for another remote port.

    For the BTI805, BTI821, and BTI822, when you add one SLA pair, a second SLA pair is automatically added in the opposite direction between the same two endpoints.

    Note: If you plan to use the link trace and loopback capabilities on a BTI810, you should enable automatic MIP creation. For information on how to do this, see the proNX Service Manager Installation and Administration Guide. By default, automatic MIP creation is disabled for the BTI810.

    PSM reports an error in the SLA/CFM dialog for the following reasons:

    • Only one end of the SLA pair has been provisioned (one initiator or one responder).
    • Mismatched MEPs (a MEP ID that does not exist has been paired with a MEP ID on the service).

    Note: The SLA Measurement Profile is provisionable in the Advanced Settings of each Switch in the Details tab of the activation view. You can select either an existing profile or a template, and you are able to view the profile’s contents.

    1. Open the Service Attributes window for an Ethernet service, and then click the SLA/CFM tab.

      PSM automatically populates the CFM Details table with the MEPs on the BTI7000 Series NEs.

    2. Optionally, set the MEG Name.

      The MEG Name can be up to 6 characters long. By default, it is the SVLAN ID prefixed by one or more "v"s (padded up to 6 characters).

    3. Click Auto-Configure CFM to add MEPs on BTI700 Series and BTI800 Series devices. PSM responds with a dialog box detailing the MEPs that it has added. Click OK to close the dialog box.

      Clicking Auto-Configure CFM configures CFM for BTI700 Series and BTI800 Series devices. Once clicked, the system goes through the service and automatically adds MEPs, Remote MEPs, and MIPs to the service. If the Activate or Apply button is then clicked, the MEPs/MIPs are provisioned on the devices.

      If the service includes BTI7000 Series UNIs, then this step also adds Remote MEPs to and from the BTI7000 Series UNIs so that CFM is properly configured on all equipment. If a service is modified, then clicking the Auto-Configure CFM button adds the proper CFM to whatever has been modified.

      When the configuration is complete, a list of the entities added is displayed in the CFM Details table.

    4. To manually add Remote MEPs to the CFM Details table, click Add Remote MEP and specify the remote MEP ID.

      Use the pop-up dialog box to configure the remote MEP. MEPs on BTI700 Series and BTI800 Series devices require that the MAC address of the device be entered manually. Once you are finished configuring the remote MEP, click OK.

      The Remote MEP is added to the CFM Details table. Repeat this step to add further MEPs.

    5. To change the CCM interval, select the new interval in the Crosscheck dropdown menu.

    6. To add SLA pairs to the service, click Add SLA Pair and specify the initiator and responder.

      Use the pop-up dialog box to configure the SLA pair.

      Once you are finished configuring the SLA pair, click OK. The SLA pair is added to the SLA Details table. Repeat this step to add further SLA pairs.

    7. To change the SVLAN priority of the SLA pair, select the new priority from the SVLAN Priority dropdown menu.

    8. To enable or disable the SLA pair, select the new state from the State dropdown menu.

    9. When you are done adding SLAs/CFMs to the service, click Activate to activate a new service or Apply to apply changes to an existing service.

      Note: When you perform a CFM update on a pre-1.5 release BTI700 Series device, you must manually rediscover the device in order for the update to be reflected in PSM.

      This procedure is complete.

    Modified: 2017-11-07