Chapter 18
| Class of Service Commands
Priority Commands (Layer 3 and 4)
– 436 –
qos map
dscp-mutation
This command maps DSCP values in incoming packets to per-hop behavior and
drop precedence values for priority processing. Use the
no
form to restore the
default settings.
Syntax
qos map dscp-mutation
phb
drop-precedence
from
dscp0
...
dscp7
no qos map dscp-mutation
dscp0
...
dscp7
phb
- Per-hop behavior, or the priority used for this router hop. (Range: 0-7)
drop-precedence
- Drop precedence used for Random Early Detection in
controlling traffic congestion. (Range: 0 - Green, 3 - Yellow, 1 - Red)
dscp
- DSCP value in ingress packets. (Range: 0-63)
D
EFAULT
S
ETTING
.
Command Mode
Global Configuration
Command Usage
◆
Enter a value pair for the internal per-hop behavior and drop precedence,
followed by the keyword “from” and then up to eight DSCP values separated by
spaces.
◆
This map is only used when the QoS mapping mode is set to “DSCP” by the
qos
map trust-mode
command, and the ingress packet type is IPv4.
Table 97: Default Mapping of DSCP Values to Internal PHB/Drop Values
ingress-
dscp1
ingress-
dscp10
0
1
2
3
4
5
6
7
8
9
0
0,0
0,1
0,0
0,3
0,0
0,1
0,0
0,3
1,0
1,1
1
1,0
1,3
1,0
1,1
1,0
1,3
2,0
2,1
2,0
2,3
2
2,0
2,1
2,0
2,3
3,0
3,1
3,0
3,3
3.0
3,1
3
3,0
3,3
4,0
4,1
4,0
4,3
4,0
4,1
4.0
4,3
4
5,0
5,1
5,0
5,3
5,0
5,1
6,0
5,3
6,0
6,1
5
6,0
6,3
6,0
6,1
6,0
6,3
7,0
7,1
7.0
7,3
6
7,0
7,1
7,0
7,3
The ingress DSCP is composed of ingress-dscp10 (most significant digit in the left column) and
ingress-dscp1 (least significant digit in the top row (in other words, ingress-dscp = ingress-
dscp10 * 10 + ingress-dscp1); and the corresponding internal-dscp is shown at the intersecting
cell in the table.
The ingress DSCP is bitwise ANDed with the binary value 11 to determine the drop precedence.
If the resulting value is 10 binary, then the drop precedence is set to 0.
Содержание EX-3524
Страница 2: ......
Страница 28: ...Figures 28 ...
Страница 34: ...Section I Getting Started 34 ...
Страница 58: ...Chapter 1 Initial Switch Configuration Setting the System Clock 58 ...
Страница 72: ...Chapter 2 Using the Command Line Interface CLI Command Groups 72 ...
Страница 156: ...Chapter 5 SNMP Commands Notification Log Commands 156 ...
Страница 164: ...Chapter 6 Remote Monitoring Commands 164 ...
Страница 218: ...Chapter 7 Authentication Commands Management IP Filter 218 ...
Страница 268: ...Chapter 8 General Security Measures Port based Traffic Segmentation 268 ...
Страница 292: ...Chapter 9 Access Control Lists ACL Information 292 ...
Страница 312: ...Chapter 10 Interface Commands Power Savings 312 ...
Страница 324: ...Chapter 11 Link Aggregation Commands Trunk Status Display Commands 324 ...
Страница 366: ...Chapter 15 Address Table Commands 366 ...
Страница 428: ...Chapter 17 VLAN Commands Configuring Voice VLANs 428 ...
Страница 572: ...Chapter 25 IP Interface Commands IPv6 Interface 572 ...
Страница 578: ...Section I Appendices 578 ...
Страница 594: ...Appendix C Customer Support Manuals 594 ...