Release 12.2(31)Sb2; Table; Pre3 Class Maps And Qos Scalability; Class-Map Command - Cisco 10000 Series Configuration Manual

Chapter 2 Classifying Traffic

Table 2-1

Processor
PRE3
PRE4

PRE3 Class Maps and QoS Scalability

The Cisco 10000 series router with a PRE3 counts QoS matches for each class or for each match. As the
following describes, you can achieve greater scalability with per-class mode counting enabled on the
router:
•
•
To configure per-match or per-class QoS match statistics, use the qos match statistics command. For
more information, see the
Note The qos match statistics command is not available on the PRE2. Due to memory limitations, the PRE2
cannot exceed 262,000 class maps.
When using the show commands in per-class mode, the per-match statistics display a value of zero. In
per-class mode, the per-match statistics are zero in the MIB.

class-map Command

To create or modify a class map, use the class-map command in global configuration mode. To remove
a class map, use the no form of this command. By default, the router uses match-all.
class-map [match-any | match-all] class-map-name
no class-map [match-any | match-all] class-map-name
OL-7433-09
System Limits for Class Maps (continued)
Cisco IOS Release

Release 12.2(31)SB2

and later releases
Release 12.2(33)SB and
later releases
Per-match mode (default mode)—The router counts matches for each match statement and class,
and supports 262,144 unique class maps per system.
Per-class mode—The router counts matches for the entire class and supports 4,194,304 unique class
maps. This mode provides greater scalability.
"qos match statistics Command" section on page
Number of Match
Number of Class Statements per
Maps per System Class Map
262,144 16
(per-match mode)
4,194,304
(per-class mode)
262,144 16
(per-match mode)
4,194,304
(per-class mode)
Cisco 10000 Series Router Quality of Service Configuration Guide
Traffic Classification Using Class Maps
Number of Classes
per Policy Map
64
64
2-4.
2-3