ECS4110-28P_Management Guide

C HAPTER 38 | Class of Service Commands
Priority Commands (Layer 3 and 4)
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EXAMPLE
Console(config)#qos map phb-queue 0 from 1 2 3
Console(config)#
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 {dscp | cos}
no qos map trust-mode
dscp - Sets the QoS mapping mode to DSCP.
cos - Sets the QoS mapping mode to CoS.
DEFAULT SETTING
CoS
COMMAND MODE
Interface Configuration (Port, Static Aggregation)
COMMAND USAGE
◆ If the QoS mapping mode is set to DSCP with this command, and the
ingress packet type is IPv4, then priority processing will be based on
the DSCP value in the ingress packet.
◆ If the QoS mapping mode is set to DSCP, and a non-IP packet is
received, the packet's CoS and CFI (Canonical Format Indicator) values
are used for priority processing if the packet is tagged. For an untagged
packet, the default port priority (see page 1198) is used for priority
processing.
◆ If the QoS mapping mode is set to CoS with this command, and the
ingress packet type is IPv4, then priority processing will be based on
the CoS and CFI values in the ingress packet.
For an untagged packet, the default port priority (see page 1198) is
used for priority processing.
EXAMPLE
This example sets the QoS priority mapping mode to use DSCP based on
the conditions described in the Command Usage section.
Console(config)#interface ge1/1
Console(config-if)#qos map trust-mode cos
Console(config-if)#