Monitoring CoS Scheduler Maps

Purpose

Use the monitoring functionality to display assignments of CoS forwarding classes to schedulers.

To monitor CoS scheduler maps in the CLI, enter the CLI command:

user@switch> show class-of-service scheduler-map

To monitor a specific scheduler map in the CLI, enter the CLI command:

user@switch> show class-of-service scheduler-map scheduler-map-name

Table 1 summarizes key output fields for CoS scheduler maps.

Table 1: Summary of Key CoS Scheduler Maps Output Fields
Field	Values
Scheduler map	Name of a scheduler map that maps forwarding classes to schedulers.
Index	Index of a specific object—scheduler maps, schedulers, or drop profiles.
Scheduler	Name of a scheduler that controls queue properties such as bandwidth and scheduling priority.
Forwarding class	Name(s) of the forwarding class(es) to which the scheduler is mapped.
Transmit rate	Guaranteed minimum bandwidth configured on the queue mapped to the scheduler.
Priority	Scheduling priority of traffic on a queue: `strict-high` or `high`—Packets on a strict-high priority queue are transmitted first, before all other traffic, up to the configured maximum bandwidth (shaping rate). `low`—Packets in this queue are transmitted after packets in the `strict-high` queue.
Drop Profiles	Name and index of a drop profile that is mapped to a specific loss priority and protocol pair. The drop profile determines the way best effort queues drop packets during periods of congestion.
Loss Priority	Packet loss priority mapped to the drop profile. You can configure different drop profiles for `low`, `medium-high`, and `high` loss priority traffic.
Protocol	Transport protocol of the drop profile for the particular priority.
Name	Name of the drop profile.

Use the following table to review platform-specific behaviors for your platforms.

Table 2: Platform-Specific Behavior
Platform	Difference
EX4600	On EX4600 switches, only one queue can be configured as `strict-high` or `high` priority.
QFX10000	On strict-high priority queues on QFX10000 switches, `transmit-rate` defines the maximum amount of traffic on the queue that is treated as strict-high priority traffic. On QFX10000 switches, you can configure more than one strict-high priority queue.