Cisco Catalyst 3550 Command Reference Manual page 279

Chapter 2 Catalyst 3550 Switch Cisco IOS Commands
Table 2-10
Table 2-10
IP Precedence Value
0
1
2
3
4
5
6
7
The default DSCP-to-DSCP-mutation map is a null map, which maps an incoming DSCP value to the
same DSCP value.
The default policed-DSCP map is a null map, which maps an incoming DSCP value to the same DSCP
value.
Command Modes
Global configuration
Command History Release
12.1(4)EA1
Usage Guidelines
All the maps are globally defined. All the maps, except the DSCP-to-DSCP-mutation map, are applied
to all ports. The DSCP-to-DSCP-mutation map is applied to a specific port. You can have multiple
DSCP-to-DSCP-mutation maps, and apply them to different Gigabit-capable Ethernet ports. Because a
group of twelve 10/100 Ethernet ports (Fast Ethernet 0/1 to 0/12, 0/13 to 0/24, and so forth) shares a
single DSCP-to-DSCP-mutation map, only one map can be attached to each 10/100 group.
Examples This example shows how to define the IP-precedence-to-DSCP map and map IP-precedence values 0 to
7 to DSCP values of 0, 10, 20, 30, 40, 50, 55, and 60:
Switch# configure terminal
Switch(config)# mls qos map ip-prec-dscp 0 10 20 30 40 50 55 60
This example shows how to define the policed-DSCP map. DSCP values 1, 2, 3, 4, 5, and 6 are marked
down to DSCP value 0. Marked DSCP values that not explicitly configured are not modified:
Switch# configure terminal
Switch(config)# mls qos map policed-dscp 1 2 3 4 5 6 to 0
This example shows how to define the DSCP-to-CoS map. DSCP values 20, 21, 22, 23, and 24 are
mapped to CoS 1. DSCP values 10, 11, 12, 13, 14, 15, 16, and 17 are mapped to CoS 0:
Switch# configure terminal
OL-8566-02
shows the default IP-precedence-to-DSCP map:
Default IP-Precedence-to-DSCP Map
DSCP Value
0
8
16
24
32
40
48
56
Modification
This command was introduced.
Catalyst 3550 Multilayer Switch Command Reference
mls qos map
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