Precedence level in meters

Standard-Match and IP-Control pipeline models

The DSCP Remark action in the meters associated with a flow for the above models writes the prec_level associated with the band directly into the DSCP field of the packet. This avoids increasing the drop precedence as defined in the OpenFlow specification.

Custom pipeline model

The DSCP Remark action in meters associated with a flow in custom pipeline model ignores the prec_level argument passed in the meter modification request. In this model, the remarking is performed based on the band to which the packet is classified into as per the defined rates.

Input DSCP Green Yellow Red Input DSCP Green Yellow Red
0 0 0 0 31 17 9 1
1 1 1 1 32 32 24 16
2 2 2 2 33 33 25 17
3 3 3 3 34 34 26 18
4 4 4 4 35 35 27 19
5 5 5 5 36 36 28 20
6 0 0 0 37 37 29 21
7 1 1 1 38 24 16 8
8 8 0 0 39 25 17 9
9 9 1 1 40 40 32 24
10 10 2 2 41 41 33 25
11 11 3 3 42 42 34 26
12 12 4 4 43 43 35 27
13 13 5 5 44 44 36 28
14 0 0 0 45 45 37 29
15 1 1 1 46 32 24 16
16 16 8 0 47 33 25 17
17 17 9 1 48 48 40 32
18 18 10 2 49 49 41 33
19 19 11 3 50 50 42 34
20 20 12 4 51 51 43 35
21 21 13 5 52 52 44 36
22 8 0 0 53 53 45 37
23 9 1 1 54 40 32 24
24 24 16 8 55 41 33 25
25 25 17 9 56 56 48 40
26 26 18 10 57 57 49 41
27 27 19 11 58 58 50 42
28 28 20 12 59 59 51 43
29 29 21 13 60 60 52 44
30 16 8 0 61 61 53 45
        62 48 40 32
        63 49 41 33