CLI Reference Guide-R01

Chapter 22 | Class of Service Commands
Priority Commands (Layer 3 and 4)
– 617 –
phb - Per-hop behavior, or the priority used for this router hop. (Range: 0-7)
drop-precedence - Drop precedence used for controlling traffic congestion.
(Range: 0 - Green, 3 - Yellow, 1 - Red)
Default Setting
Command Mode
Interface Configuration (Port, Static Aggregation)
Command Usage
◆ Enter up to eight paired values for per-hop behavior and drop precedence
separated by spaces. These values are used for internal priority processing, and
correspond to IP Precedence values 0 - 7.
◆ If the QoS mapping mode is set the IP Precedence and the ingress packet type
is IPv4, then the IP Precedence-to-DSCP mapping table is used to generate
priority and drop precedence values for internal processing.
Example
Console(config)#interface ethernet 1/5
Console(config-if)#qos map ip-prec-dscp 7 0 6 0 5 0 4 0 3 0 2 1 1 1 0 1
Console(config-if)#
qos map trust-mode This command sets QoS mapping to DSCP or CoS. Use the no form to restore the
default setting.
Syntax
qos map trust-mode {cos | dscp | ip-prec}
no qos map trust-mode
cos - Sets the QoS mapping mode to CoS.
dscp - Sets the QoS mapping mode to DSCP.
ip-prec - Sets the QoS mapping mode to IP Precedence.
Default Setting
CoS
Command Mode
Interface Configuration (Port)
Table 121: Default Mapping of IP Precedence to Internal PHB/Drop Values
IP Precedence Value 0 1 2 3 4 5 6 7
Per-hop Behavior 0 1 2 3 4 5 6 7
Drop Precedence 0 0 0 0 0 0 0 0