QoS Features, Commands, and Changes
set mpls experimental imposition Command
Cisco IOS Release: Release 12.3(7)XI1
Description: The set mpls experimental imposition command was introduced on the PRE2 to set the
value of the Multiprotocol Label Switching (MPLS) experimental (EXP) field on all imposed label
entries. This command is available only on the PRE2.
Cisco IOS Release: Release 12.2(28)SB
Description: This command was integrated in Cisco IOS Release 12.2(28)SB.
set qos-group Command
Cisco IOS Release: Release 12.0(17)SL
Description: The set qos-group command was introduced on the PRE1 to set a quality of service (QoS)
group identifier (ID) that can be used later to classify packets.
Cisco IOS Release: Release 12.2(28)SB
Description: This command was integrated in Cisco IOS Release 12.2(28)SB.
Marking Feature
Cisco IOS Release: Release 12.0(17)SL
Description: The marking feature was introduced on the PRE1 to enable you to differentiate packets
based on designated markings. Other devices can examine the marked bits and classify traffic based on
the marked values.
Cisco IOS Release: Release 12.0(22)S
Description: This feature was enhanced to support MPLS experimental (EXP) marking.
Cisco IOS Release: Release 12.2(16)BX
Description: This feature was introduced on the PRE2 and was enhanced to support 802.1Q class of
service (CoS) marking. This enhancement is available only on the PRE2.
Cisco IOS Release: Release 12.3(7)XI
Description: This feature was enhanced on the PRE2 to support MPLS experimental (EXP) and
discard-class marking. The discard-class enhancement is available only on the PRE2.
Cisco IOS Release: Release 12.2(28)SB
Description: This feature was integrated in Cisco IOS Release 12.2(28)SB for the PRE2.
Cisco IOS Release: Release 12.2(31)SB2
Description: This feature was introduced on the PRE3 to allow you to mark the IP DSCP bits of traffic
on the L2TP access concentrator (LAC). Frame Relay DE bit marking and tunnel header marking were
also introduced on the PRE3.
Cisco 10000 Series Router Quality of Service Configuration Guide
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Chapter 1
Quality of Service Overview
OL-7433-09