Configuration Guide User guide

1986 FastIron Configuration Guide
53-1002494-02
Configuring QoS mapping configuration
• Front end queue 2 = 3% (qosp4) + 3% (qosp5) = 6%
• Front end queue 1 = 3% (qosp2) + 3% (qosp3) = 6%
• Front end queue 0 = 3% (qosp0) + 3% (qosp1) = 6%
The hardware queues for mixed WRR and SP mode are calculated as follows:
• Front end queue 3 is Strict Priority as default values for qosp7 and qosp6 are SP
• Front end queue 2 = 25% (qosp4) + 15% (qosp5) = 40%
• Front end queue 1 = 15% (qosp2) + 15% (qosp3) = 30%
• Front end queue 0 = 15% (qosp0) + 15% (qosp1) = 30%
Default scheduling configuration for the ICX 6430
The default scheduling configuration for Weighted Round Robin (WRR), Strict Priority (SP), and
mixed WRR and SP mode for the eight QoS priority (qosp) queues mapped to the four hardware
queues for an ICX 6430 is described in Table 345.
TABLE 345 Default configuration for 8 to 4 queues (stand-alone system)
Table 345 includes values for default, non-jumbo mode WRR for a stand-alone system. The
hardware queues are calculated using default qosp values from Table 341 on page 1977 as
follows.
• Queue 3 = 75% (qosp7)
• Queue 2 = 3% (qosp5) + 7% (qosp6) = 10%
• Queue 1 = 3% (qosp2) + 3% (qosp3) + 3% (qosp4) = 9%
• Queue 0 = 3% (qosp0) + 3% (qosp1) = 6%
The hardware queues for mixed WRR and SP mode are calculated as follows:
• Queue 3 is Strict Priority as the default value for qosp7 is SP
• Queue 2 is Strict Priority as default values for qosp5 and qosp6 are SP
• Queue 1 = 15% (qosp2) + 15% (qosp3) + 40% (qosp4) = 70%
• Queue 0 = 15% (qosp0) + !5% (qosp1) = 30%
NOTE
If any qosp value is SP, then the weight of the hardware queue is SP.
Hardware queue Weighted Round
Robin (WRR)
mode
Mixed WRR and
SP
Strict Priority (SP)
mode
3 Weight 75% Strict Priority Strict Priority
2 Weight 10% Strict Priority Strict Priority
1 Weight 9% Weight 70% Strict Priority
0 Weight 6% Weight 30% Strict Priority