Set Dscp - ADTRAN AOS Version R10.1.0 Command Reference Manual

Command Reference Guide

set dscp

Use the set dscp command to modify the differentiated services code point (DSCP) field (on matching
Internet Protocol version 4 (IPv4) and/or Internet Protocol version 6 (IPv6) packets) to the specified value.
For more details on determining the DSCP field, refer to the Technology Review section of the command
match dscp on page 3278. Use the no form of this command to remove a specified DSCP value. Variations
of this command include:
set dscp <value>
set dscp afxx
set dscp csx
set dscp default
set dscp ef
Syntax Description
<value>
afxx
csx
default
ef
Default Values
No default values are necessary for this command.
Command History
Release 6.1
Functional Notes
Quality of service (QoS) policies are configured in the ADTRAN Operating System (AOS) command line
interface (CLI) to dictate the priority for servicing specified traffic types on a particular interface. QoS
policies contain at least one match reference (using the match command) and one or more action items
(using the priority, bandwidth, shape, or set commands).
The set dscp command can be used to change the differentiated services (DS or DiffServ) field for
incoming IPv4 and IPv6 traffic serviced by the quality of service (QoS) policy. Every IPv4 header contains
an 8-bit type of service (ToS) field used for marking data types requiring special handling when traveling
through the network. IPv6 headers have an 8-bit traffic class field serving the same purpose. Originally this
ToS field was used for IP precedence markings (using only the first three bits of the 8-bit field), and was
later revised in RFC 2474 to create the 6-bit DS field (reserving the last two bits of the field for future use).
The DS field can be manipulated to indicate higher or lower traffic priority using decimal values between 0
and 63.
60000CRG0-35E
Specifies the DSCP numeric value. Valid range is 0 to 63.
Specifies the assured forwarding (AF) class and subclass. Select from:
11 (001010), 12 (001100), 13 (001110), 21 (010010), 22 (010100),
23 (010110), 31 (011010), 32 (011100), 33 (011110), 41 (100010),
42 (100100), or 43 (100110).
Specifies the class selector (CS) value. Valid range is 1 to 7.
Specifies the default IP DSCP value (000000).
Specifies marking for expedited forwarding (EF).
Command was introduced.
Copyright © 2012 ADTRAN, Inc.
Quality of Service Map Command Set
3291