Ip Precedence And Dscp Values; Configuring Pfc Qos - Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual

Configuring PFC QoS

IP Precedence and DSCP Values

3-bit IP
Precedence
0
1
2
3
1. MSb = most significant bit
Configuring PFC QoS
These sections describe how to configure PFC QoS on the Catalyst 6500 series switches:
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Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
38-44
1
6 MSb of ToS
8 7 6 5 4 3
0 0 0 0 0 0
0 0 0 0 0 1
0 0 0 0 1 0
0 0 0 0 1 1
0 0 0 1 0 0
0 0 0 1 0 1
0 0 0 1 1 0
0 0 0 1 1 1
0 0 1 0 0 0
0 0 1 0 0 1
0 0 1 0 1 0
0 0 1 0 1 1
0 0 1 1 0 0
0 0 1 1 0 1
0 0 1 1 1 0
0 0 1 1 1 1
0 1 0 0 0 0
0 1 0 0 0 1
0 1 0 0 1 0
0 1 0 0 1 1
0 1 0 1 0 0
0 1 0 1 0 1
0 1 0 1 1 0
0 1 0 1 1 1
0 1 1 0 0 0
0 1 1 0 0 1
0 1 1 0 1 0
0 1 1 0 1 1
0 1 1 1 0 0
0 1 1 1 0 1
0 1 1 1 1 0
0 1 1 1 1 1
Enabling PFC QoS Globally, page 38-45
Enabling Ignore Port Trust, page 38-46
Configuring DSCP Transparency, page 38-46
Enabling Queueing-Only Mode, page 38-47
6-bit 3-bit IP
DSCP Precedence
0 4
1
2
3
4
5
6
7
8 5
9
10
11
12
13
14
15
16 6
17
18
19
20
21
22
23
24 7
25
26
27
28
29
30
31
Chapter 38
1
6 MSb of ToS 6-bit
DSCP
8 7 6 5 4 3
1 0 0 0 0 0 32
1 0 0 0 0 1 33
1 0 0 0 1 0 34
1 0 0 0 1 1 35
1 0 0 1 0 0 36
1 0 0 1 0 1 37
1 0 0 1 1 0 38
1 0 0 1 1 1 39
1 0 1 0 0 0 40
1 0 1 0 0 1 41
1 0 1 0 1 0 42
1 0 1 0 1 1 43
1 0 1 1 0 0 44
1 0 1 1 0 1 45
1 0 1 1 1 0 46
1 0 1 1 1 1 47
1 1 0 0 0 0 48
1 1 0 0 0 1 49
1 1 0 0 1 0 50
1 1 0 0 1 1 51
1 1 0 1 0 0 52
1 1 0 1 0 1 53
1 1 0 1 1 0 54
1 1 0 1 1 1 55
1 1 1 0 0 0 56
1 1 1 0 0 1 57
1 1 1 0 1 0 58
1 1 1 0 1 1 59
1 1 1 1 0 0 60
1 1 1 1 0 1 61
1 1 1 1 1 0 62
1 1 1 1 1 1 63
Configuring PFC QoS
OL-11439-03