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Applying Shaping Rates to Interfaces

To control the voice traffic latency within acceptable limits, you configure the shaping rate on constituent links of the MLPPP bundle. Shaping rate at the interface level is required only when you enable LFI. To apply shaping rates to interfaces, you have to first enable per-unit scheduling. For information about shaping rates and LFI, see Configuring CoS Components with LFI.

You must configure the shaping rate to be equal to the combined physical interface bandwidth for the constituent links. In this example, the combined bandwidth capacity of the two constituent links—se-1/0/0 and se-1/0/1—is 2 Mbps. Hence, configure a shaping rate of 2 Mbps on each constituent link.

To apply a shaping rate to the constituent links of the multilink bundle:

  1. Navigate to the top of the interfaces configuration hierarchy in either the J-Web or CLI configuration editor.
  2. Perform the configuration tasks described in Table 96 on Router R0 and Router R1.
  3. Go on to Verifying the Link Services Interface Configuration, to verify your configuration.

Table 96: Applying Shaping Rate to Interfaces

Task

J-Web Configuration Editor

CLI Configuration Editor

Navigate to the Class of service level in the configuration hierarchy.

  1. In the J-Web interface, select Configuration>View and Edit>Edit Configuration.
  2. Next to Class of service, click Edit.

From the [edit] hierarchy level, enter

edit class-of-service

Apply the shaping rate to the constituent links of the multilink bundle—for example, se-1/0/0 and se-1/0/1. The shaping rate specifies the amount of bandwidth to be allocated for this multilink bundle.

  1. Under Interfaces, select the name of the interface on which you want to apply the shaping rate—se-1/0/0 or se-1/0/1.
  2. Next to Unit 0, click Edit.
  3. Select Shaping rate, and click Configure.
  4. From the Shaping rate choice list, select Rate.
  5. In the Rate box, type 2000000.
  6. Click OK.
  1. Set the shaping rate on both the constituent links:
    • To set the shaping rate for se-1/0/0, enter

      edit interfaces se-1/0/0

    • To set the shaping rate for se-1/0/1, enter

      edit interfaces se-1/0/1

  2. Set the shaping rate:

    set unit 0 shaping-rate 2000000

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