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show class-of-service scheduler-map-forwarding-class-sets



Display the mapping of fabric schedulers to fabric fc-sets and a summary of scheduler parameters for each entry on Interconnect devices.



Display all fabric scheduler maps.


(Optional) Display a summary of fabric scheduler parameters for each fabric fc-set to which the specified scheduler is assigned.

Required Privilege Level


Output Fields

Table 1 describes the output fields for the show class-of-service scheduler-map fc-set command. Output fields are listed in the approximate order in which they appear.

Table 1: show class-of-service scheduler-map-fcset Output Fields

Field Name

Field Description

Scheduler map fcset

Name of the fabric scheduler map.


Internal index of the indicated object. Objects having indexes in this output include fabric scheduler maps, schedulers, and drop profiles.


Name of the scheduler.

Forwarding class set

Name of the fabric forwarding class set (fabric fc-set) mapped to the scheduler.

Transmit rate

Configured transmit rate of the scheduler (percentage). The transmit rate of a fabric scheduler determines the proportion of class group (priority group) bandwidth that the associated fabric fc-set receives. The sum of the fabric fc-set transmit rates in a class group determines the percentage of available port bandwidth allocated to the class group.

Rate Limit

Rate limiting configuration of the queue. Possible values are none, meaning no rate limiting, and exact, meaning the queue only transmits at the configured rate.

Buffer size

Egress queue buffer size (percentage).

Buffer limit

Buffer limiting configuration of the queue. Possible values are none, meaning no buffer limiting, and exact, meaning the buffer is limited to the configured buffer size.


Scheduling priority: low or high (default value only; value is not user-configurable).

Excess priority

Priority of excess bandwidth: low, medium-low, medium-high, high, or none (default value only; value is not user-configurable).

Shaping rate

Maximum bandwidth allowed to traffic mapped to the scheduler.

Drop profiles

Table displaying the assignment of drop profiles by name and index to a given loss priority and protocol pair.

Loss priority

Packet loss priority for drop profile assignment.


Transport protocol for drop profile assignment.


Name of the drop profile.

Sample Output

show class-of-service scheduler-map-forwarding-class-sets

Release Information

Command introduced in Junos OS Release 13.1R2.