2-2
Cisco 10000 Series Router Quality of Service Configuration Guide
OL-7433-09
Chapter 2 Classifying Traffic
Traffic Classification Using Class Maps
Feature History for Class Maps
System Limits for Class Maps
Table 2-1
lists the system limits for class maps on the Cisco 10000 series router. In the table, the number
of class maps per system and the number of classes per policy map include the class-default class.
Cisco IOS Release
Description
Required PRE
Release 12.0(17)SL
The class map feature was introduced on the PRE1.
PRE1
Release 12.2(15)BX
This feature was introduced on the PRE2.
PRE2
Release 12.2(28)SB
This feature was integrated in Cisco IOS
Release 12.2(28)SB for the PRE2.
PRE2
Release 12.2(31)SB2
This feature was integrated in Cisco IOS
Release 12.2(31)SB2 for the 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 differentiated service
code point (DSCP) value.
PRE3
Release 12.2(33)SB
This feature was enhanced to support matching on the Frame
Relay Discard Eligibility (DE) bit.
PRE2, PRE3,
PRE4
Table 2-1
System Limits for Class Maps
Processor
Cisco IOS Release
Number of Class
Maps per System
Number of Match
Statements per
Class Map
Number of Classes
per Policy Map
PRE1
All Releases earlier than
Release 12.0(17)SL
256
16
16
Release 12.0(17)SL
and later releases
256
16
256
Release 12.0(25)SX
and later releases
256
16
32
PRE2
Release 12.2(15)BX
and later releases
262,000
16
64
Release 12.3(7)XI
and later releases
262,000
16
127
