Cisco Catalyst 4500 Series Configuration Manual page 697

Chapter 2
set cos
To set the Layer 2 class of service (CoS) value of a packet, use the set cos command in policy-map class
configuration mode. To remove a specific CoS value setting, use the no form of this command.
Syntax Description
cos-value
from-field
table
table-map-name
Command Default No CoS value is set for the outgoing packet.
Command Modes Policy-map class configuration mode
Command History Release
12.2(40)SG
Usage Guidelines
The set cos command can be used in an ingress as well as an egress policy map attached to an interface
or VLAN.
You can use this command to specify the "from-field" packet-marking category to be used for mapping
and setting the CoS value. The "from-field" packet-marking categories are as follows:
•
•
•
•
set cos {cos-value | from-field [table table-map-name]}
no set cos {cos-value | from-field [table table-map-name]}
Specific IEEE 802.1Q CoS value from 0 to 7.
Specific packet-marking category to be used to set the CoS value of the
packet. If you are using a table map for mapping and converting
packet-marking values, this establishes the "map from" packet-marking
category. Packet-marking category keywords are as follows:
•
•
•
•
(Optional) Indicates that the values set in a specified table map will be used
to set the CoS value.
(Optional) Name of the table map used to specify the CoS value. The table
map name can be a maximum of 64 alphanumeric characters.
Modification
This command was introduced on Supervisor Engine 6E and Catalyst
4900M.
Precedence
Differentiated services code point (DSCP)
Cost of Service (CoS)
Quality of Service (QoS) group
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release XE 3.9.xE and 15.2(5)Ex
precedence
dscp
cos
qos group
set cos
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