Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual page 597

Chapter 38 Configuring PFC QoS
Configuring Policy Map Class Marking
In all releases, PFC QoS supports policy map class marking for untrusted traffic with set policy map
class commands.
To configure policy map class marking, perform this task:
Command
Router(config-pmap-c)# set {dscp dscp_value |
precedence ip_precedence_value}
Router(config-pmap-c)# no set {dscp dscp_value |
precedence ip_precedence_value}
Configuring the Policy Map Class Trust State
Note You cannot attach a policy map that configures a trust state with the service-policy output command.
To configure the policy map class trust state, perform this task:
Command
Router(config-pmap-c)# trust {cos | dscp |
ip-precedence}
Router(config-pmap-c)# no trust
When configuring the policy map class trust state, note the following information:
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Configuring Policy Map Class Policing
When you configure policy map class policing, note the following information:
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These sections describe configuration of policy map class policing:
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Policing with the conform-action transmit keywords sets the port trust state of matched traffic to trust
Note
DSCP or to the trust state configured by a trust command in the policy map class.
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Enter the no trust command to use the trust state configured on the ingress port (this is the default).
With the cos keyword, PFC QoS sets the internal DSCP value from received or ingress port CoS.
With the dscp keyword, PFC QoS uses received DSCP.
With the ip-precedence keyword, PFC QoS sets DSCP from received IP precedence.
PFC QoS does not support the set-qos-transmit policer keyword.
PFC QoS does not support the set-dscp-transmit or set-prec-transmit keywords as arguments to
the exceed-action keyword.
PFC QoS does not detect the use of unsupported keywords until you attach a policy map to an
interface.
Using a Named Aggregate Policer, page 38-64
Configuring a Per-Interface Policer, page 38-64
Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
Purpose
Configures the policy map class to mark matched untrusted
traffic with the configured DSCP or IP precedence value.
Clears the marking configuration.
Purpose
Configures the policy map class trust state, which selects the
value that PFC QoS uses as the source of the initial internal
DSCP value.
Reverts to the default policy-map class trust state (untrusted).
Configuring PFC QoS
38-63