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Configuring Schedulers in a Dynamic Profile for Subscriber Access

You use schedulers to define the parameters of output queues. These properties include the amount of interface bandwidth assigned to the queue, the size of the memory buffer allocated for storing packets, the priority of the queue, and the tail drop profiles associated with the queue.

You can configure up to four schedulers in a dynamic profile.

Within a dynamic profile, you can choose to define schedulers with static values, dynamic variables, or a combination of static values and dynamic variables. The dynamic variables enable RADIUS to provide the value for the scheduler parameter when the subscriber logs in.

Configuring Static Schedulers in a Dynamic Profile

This topic describes how to configure schedulers with static values in a dynamic profile for subscriber access.

To configure static scheduling and queuing in a dynamic profile:

  1. Configure the scheduler and queuing parameters.
    1. Specify the scheduler for which you want to configure parameters.
    2. Configure the buffer size.
    3. Configure the drop-profile map and drop profile.
    4. Configure the priority.
    5. Configure the transmit rate.
    6. Configure the excess rate.
    7. (Optional) Configure the priority value for the excess-rate.
  2. Associate the scheduler with a scheduler map.
    1. Configure the scheduler map name.
    2. Configure the forwarding class.
    3. Configure the scheduler.

See Also

Configuring Dynamic Schedulers with Variables in a Dynamic Profile

You can configure variables for the dynamic scheduler parameters. These values are dynamically obtained by RADIUS when a subscriber logs in or changes a service using a RADIUS change of authorization (CoA) message.

To configure dynamic scheduling and queuing in a dynamic profile:

  1. Configure the scheduler and queuing parameters.
    1. Specify the scheduler name using a variable.
    2. Configure the variable for the buffer size.
    3. Configure the variables for the drop-profile maps and the drop profile.
    4. Configure the variable for the priority.
    5. Configure the variable for the transmit rate.
    6. Configure the variable for the excess rate.
    7. Configure the variable for the priority of the excess-rate.
  2. Associate the scheduler with a scheduler map.
    1. Configure the scheduler map name.
    2. Configure the forwarding class.
    3. Configure the scheduler.

See Also

Configuring a Combination of Static and Dynamic Scheduler Parameters in a Scheduler Definition

Within a dynamic profile, you can choose to configure one dynamic scheduler definition, or combine static and dynamic scheduler parameters in many static scheduler definitions.

Combining static and dynamic scheduler parameters enables you to provide subscribers with unique rate configurations that the RADIUS definitions for predefined variables do not allow.

To configure a scheduler definition that contains static and dynamic scheduling and queuing parameters:

  1. Configure the scheduler definition.
    1. Specify the scheduler name.
      Note:

      To configure a static scheduler that contains both static and dynamic parameters, you must specify a unique scheduler name, not the $junos-cos-scheduler variable.

    2. Configure the buffer size.

      Do either of the following:

      • Configure a static value.

      • Configure a variable.

    3. Configure the drop-profile maps, the drop profile, and the priority.

      Do either of the following:

      • Configure static values.

      • Configure variables.

    4. Configure the priority.

      Do either of the following:

      • Configure a static value.

      • Configure a variable.

    5. Configure the transmit rate.

      Do either of the following:

      • Configure a static value.

      • Configure a variable.

    6. Configure the excess rate.

      Do either of the following:

      • Configure a static value.

      • Configure a variable.

    7. Configure the priority for the excess-rate.

      Do either of the following:

      • Configure a static value.

      • Configure a variable.

  2. Associate the scheduler with a scheduler map.
    1. Configure the scheduler map name.
    2. Configure the forwarding class.
    3. Configure the scheduler.

See Also

Related Documentation