Ip Precedence And Dscp Values - Cisco 7604 Configuration Manual
Ios software configuration guide
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Configuring PFC QoS
Within each range, PFC QoS programs the PFC with token bucket sizes that are multiples of the
granularity values.
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 Cisco 7600 series routers:
•
•
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
41-56
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 41-57
Enabling Ignore Port Trust, page 41-58
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 41
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
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