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Cisco 10000 Series Router Quality of Service Configuration Guide
OL-7433-09
Chapter 1 Quality of Service Overview
QoS Features, Commands, and Changes
Cisco IOS Release: Release 12.2(15)BX
Description: This command was enhanced to enable you to match on the class of service of a packet.
When you specify the match cos command, packets that match the value you set using the set cos
command are assigned to the associated traffic class. The match cos command is available only on the
PRE2.
Cisco IOS Release: Release 12.2(16)BX
Description: This command was enhanced on the PRE2 to enable you to match the experimental (EXP)
value in the topmost label of the packet. The match mpls experimental topmost command is available
only on the PRE2.
Note The router does not support the set mpls experimental topmost command.
Cisco IOS Release: Release 12.3(7)XI
Description: This command was enhanced on the PRE2 to enable you to match the MPLS experimental
(EXP) bit value on the imposed label entry of the packet. When you specify the match
mpls
experimental imposition command, the router classifies a packet when the MPLS EXP value on the
imposed label entry of the packet matches the value you set using the set mpls experimental imposition
command. This command is available only on the PRE2.
The match command was also enhanced to enable you to match the discard value of the class. The
discard value indicates the drop eligibility of a packet. When you specify the match discard-class
command, the router classifies a packet when the discard value of the packet matches the value you set
using the set discard-class command. The match discard-class command is available only on the
PRE2.
Cisco IOS Release: Release 12.2(28)SB
Description: The match commands were integrated in Cisco IOS Release 12.2(28)SB.
Cisco IOS Release: Release 12.2(31)SB2
Description: This command was introduced on the PRE3 to enable you to match on the class of service
of a packet. When you specify the match cos command, packets that match the value you set using the
set cos command are assigned to the associated traffic class. The match cos command is available on
the PRE2 and PRE3.
Enhancements to the modular quality of service CLI (MQC) allow you to classify packets on the L2TP
access concentrator (LAC) based upon the IP type of service (ToS) bits in an embedded IP packet. The
classification is used to police ingress traffic according to the DSCP value.
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