Owner's Manual

300 QoS Commands
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The following example displays the DSCP-mutation map.
qos trust (Global)
The qos trust global configuration command can be used in basic mode to configure the system to
"trust" state. To return to the default state, use the
no form of this command.
Syntax
qos trust {cos | dscp |tcp-udp-port}
no qos trust
• cos—Classifies ingress packets with the packet CoS values. For untagged packets, the
port default CoS is used.
• dscp—Classifies ingress packets with the packet DSCP values.
• tcp-udp-port—Classifies ingress packets with the packet destination port values.
Default Configuration
If the system is in basic mode then CoS is the default trust mode.
Command Mode
Global Configuration mode
User Guidelines
This command can be used only in QoS basic mode.
Packets entering a quality of service (QoS) domain are classified at the edge of the QoS
domain. When the packets are classified at the edge, the switch port within the QoS domain
Dscp-dscp mutation map:
d1 : d2 0 1 2 3 4 5 6 7 8 9
-------------------------------------------------------
0 : 00 01 02 03 04 05 06 07 08 09
1 : 10 11 12 13 14 15 16 17 18 19
2 : 20 21 22 23 24 25 26 27 28 29
3 : 30 31 32 33 34 35 36 37 38 39
4 : 40 41 42 43 44 45 46 47 48 49
5 : 50 51 52 53 54 55 56 57 58 59
6 : 60 61 62 63