Cisco Catalyst 4500 Series Command Reference Guide

2-625
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
OL-27596 -01
Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
set dscp
set dscp
To mark a packet by setting the differentiated services code point (DSCP) value in the type of service
(ToS) byte, use the set dscp command in policy-map class configuration mode. To remove a previously
set DSCP value, use the no form of this command.
set [ip] dscp {dscp-value | from-field [table table-map-name]}
no set [ip] dscp {dscp-value | from-field [table table-map-name]
Syntax Description
Command Default Disabled
Command Modes Policy-map class configuration mode
Command History
ip (Optional) Specifies that the match is for IPv4 packets only. If not used, the
match is on both IPv4 and IPv6 packets.
dscp-value A number from 0 to 63 that sets the DSCP value. A mnemonic name for
commonly used values can also be used.
from-field Specific packet-marking category to be used to set the DSCP 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:
• cos
• qos-group
• dscp
• precedence
table (Optional) Used in conjunction with the from-field argument. Indicates that
the values set in a specified table map will be used to set the DSCP value.
table-map-name (Optional) Used in conjunction with the table keyword. Name of the table
map used to specify the DSCP value. The name can be a maximum of 64
alphanumeric characters.
Release Modification
12.2(8a)EW Support for this command was introduced on the Catalyst 4500 series switch.
12.2(40)SG Added support for from-field on Supervisor Engine 6-E and Catalyst 4900M.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E