User-configurable Scheduler Profile Configuration

Configuring a user-configurable scheduler profile involves, selecting a proper mechanism and appropriate weights for the traffic classes (TCs) corresponding to that mechanism.

It is highly recommended that you let the system use the default scheduling mechanism unless user knows what parameters you intend to modify and for what reasons.

There are two ways of creating a user-configurable scheduler profile. The scheduler-profile can be created either by specifying a mechanism (WRR, Strict, or Mixed) or by specifying weights.

The user-configurable scheduler profile can be created by specifying a mechanism. There are three available mechanisms:

  • Strict Priority (SP)
  • Weighted Round Robin (WRR)
  • Mixed (combination of SP and WRR)

Note: Limited by the buffer capacity, the ICX 7150, ICX 7150-ES, ICX 8100, and ICX 8200 switches may drop frames before they are properly scheduled. Under this condition, configure the egress buffer profile to support WRR or Mixed mode and increase the port-share level of the profile.

If you create a profile specifying only the weights without specifying the mechanism, the default mechanism is used. The default mechanism for stacking systems is Mixed and WRR for standalone systems.

If you change the profile mechanism, the weights also get changed according to the mechanism. The weights can be modified according to the following requirements:

  • If the mechanism is changed to WRR, the default system weights get assigned.
  • If the mechanism is changed to Mixed, the default mix weights get assigned.
  • If the mechanism is changed to Strict, the weights are ignored and remain untouched.

Scheduler profile modifications take effect dynamically on an active profile.

The following tables show the default values for the scheduling type for stacking and standalone ICX devices.

Default Values for Scheduling Type for Stacking Systems

Traffic Class SP SP Jumbo WRR WRR Jumbo Mixed Mixed Jumbo
TC 0 SP SP 3 8 15 15
TC 1 SP SP 3 8 15 15
TC 2 SP SP 3 8 15 15
TC 3 SP SP 3 8 15 15
TC 4 SP SP 3 8 15 15
TC 5 SP SP 10 16 25 25
TC 6 SP SP 75 44 SP SP
TC 7 SP SP SP SP SP SP

Default Values for Scheduling Type for Standalone Systems

Traffic Class SP SP Jumbo WRR WRR Jumbo Mixed Mixed Jumbo
TC 0 SP SP 3 8 15 15
TC 1 SP SP 3 8 15 15
TC 2 SP SP 3 8 15 15
TC 3 SP SP 3 8 15 15
TC 4 SP SP 3 8 15 15
TC 5 SP SP 3 8 25 25
TC 6 SP SP 7 8 SP SP
TC 7 SP SP 75 44 SP SP
Parent topic: User-Configurable Scheduler Profile