Cisco 7604 Configuration Manual page 677

Chapter 41 Configuring PFC QoS
Policy Map Class Configuration Guidelines and Restrictions
When you configuring policy map classes, follow the guidelines and restrictions:
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Creating a Policy Map Class and Configuring Filtering
To create a policy map class and configure it to filter with a class map, perform this task:
Command
Router(config-pmap)# class class_name
Router(config-pmap)# no class class_name
Configuring Policy Map Class Actions
When configuring policy map class actions, note the following information:
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OL-4266-08
The PFC2 support the class class_name protocol policy map command, which configures NBAR
and sends all traffic on the Layer 3 interface, both ingress and egress, to be processed in software
on the MSFC2. To configure NBAR, refer to this publication:
http://www.cisco.com/en/US/docs/ios/12_4t/qos/configuration/guide/qsnbar1.html
PFC QoS does not support the class class_name destination-address, class class_name
input-interface, class class_name qos-group, and class class_name source-address policy map
commands.
With Release 12.2(18)SXE and later releases, PFC QoS supports the class default policy map
command.
PFC QoS does not detect the use of unsupported commands until you attach a policy map to an
interface.
Policy maps can contain one or more policy map classes.
Put all trust-state and policing commands for each type of traffic in the same policy map class.
PFC QoS only applies commands from one policy map class to traffic. After traffic has matched the
filtering in one policy map class, QoS does apply the filtering configured in other policy map
classes.
For hardware-switched traffic, PFC QoS does not support the bandwidth, priority, queue-limit, or
random-detect policy map class commands. You can configure these commands because they can
be used for software-switched traffic.
PFC QoS does not support the set qos-group policy map class commands.
PFC QoS supports the set ip dscp and set ip precedence policy map class commands for IPv4
traffic.
In Release 12.2(18)SXD and later releases and in Release 12.2(17d)SXB and later releases, you
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can use the set ip dscp and set ip precedence commands on non-IP traffic to mark the internal
DSCP value, which is the basis of the egress Layer 2 CoS value.
– In Release 12.2(18)SXE and later releases, the set ip dscp and set ip precedence commands
are saved in the configuration file as set dscp and set precedence commands.
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
Purpose
Creates a policy map class and configures it to filter with a
class map.
PFC QoS supports class maps that contain a single
Note
match command.
Clears use of the class map.
Configuring PFC QoS
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