Calculated Weights Mapped to Hardware Weights
The calculated weight in a traffic control profile is mapped to hardware weight, but the hardware only supports a limited WFQ profile. The weights are rounded to the nearest hardware weight according to the values in Table 1.
Traffic Control Profile Number |
Number of Traffic Control Profiles |
Weights |
Maximum Error |
|---|---|---|---|
1–16 |
16 |
1–16 (interval of 1) |
50.00% |
17–29 |
13 |
18–42 (interval of 2) |
6.25% |
30–35 |
6 |
45–60 (interval of 3) |
1.35% |
36–43 |
8 |
64–92 (interval of 4) |
2.25% |
44–49 |
6 |
98–128 (interval of 6) |
3.06% |
50–56 |
7 |
136–184 (interval of 8) |
3.13% |
57–62 |
6 |
194–244 (interval of 10) |
2.71% |
63–63 |
1 |
255–255 (interval of 11) |
2.05% |
As shown in Table 1, the calculated weight of 18.9 is mapped to a hardware weight of 18, because 18 is closer to 18.9 than 20 (an interval of 2 applies in the range of 18 to 42).