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Defining CoS Schedulers and Scheduler Maps (CLI Procedure)

You use schedulers to define the class-of-service (CoS) properties 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 drop profiles associated with the queue.

You associate the schedulers with forwarding classes by means of scheduler maps. You can then associate each scheduler map with an interface, thereby configuring the queues and packet schedulers that operate according to this mapping.

Note:

On EX Series switches, you cannot configure a scheduler map on an individual interface that is a member of a link aggregation group (LAG). Instead, you must configure the scheduler map on the LAG itself (that is, on the aggregated Ethernet (ae) interface).

You can associate up to four user-defined scheduler maps with an interface.

This topic describes:

Configuring a Scheduler and a Scheduler Map

You can define the properties for an output queue by configuring a scheduler. You can then define a scheduler map to associate a forwarding class with a scheduler.

To configure a scheduler and a scheduler map:

  1. Create a scheduler, and assign one or more output queue properties to it:

    For various properties that you can define for an output queue, see the schedulers hierarchy.

  2. Configure a scheduler map that associates the scheduler with the forwarding class:

Assigning a Scheduler Map to Interfaces

After defining a scheduler map, you can assign the scheduler map to one or more interfaces. You can also assign the scheduler map to multiple interfaces by using a wildcard representation of the interface or Virtual Chassis Ports (VCPs).

Following are sample syntaxes and examples for assigning a scheduler map to a single or to multiple interfaces:

  • To assign the scheduler map to one interface:

  • To assign the scheduler map to more than one interface, you can use a wildcard representation of the interface:

    For example, following is the configuration to assign the be-map scheduler map to all Gigabit Ethernet interfaces (ge-*):

  • To assign the scheduler map to all VCPs:

    For example, following is the configuration to assign the be-map scheduler map to all VCPs:

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