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Cisco7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
Chapter42 Configuring PFC QoS
Configuring PFCQo S
•(Optional) For traffic that exceeds the CIR, you can specify an exceed action as follows:
–
For marking without policing, you can enter the transmit keyword to transmit all matched
out-of-profile traffic.
–
The default exceed action is drop, except with a maximum_burst_bytes parameter (drop is not
supported with a maximum_burst_bytes parameter).
Note When the exceed action is drop, PFC QoS ignores any configured violate action.
–
You can enter the policed-dscp-transmit keyword to cause all matched out-of-profile traffic to
be marked down as specified in the markdown map.
Note When you create a policer that does not use the pir keyword and the maximum_burst_bytes
parameter is equal to the normal_burst_bytes parameter (which is the case if you do not enter
the maximum_burst_bytes parameter), the exceed-action policed-dscp-transmit keywords
cause PFC QoS to mark traffic down as defined by the policed-dscp max-burst markdown
map.
•(Optional—Not supported with the flow keyword) for traffic that exceeds the PIR, you can specify
a violate action as follows:
–
For marking without policing, you can enter the transmit keyword to transmit all matched
out-of-profile traffic.
–
The default violate action is equal to the exceed action.
–
You can enter the policed-dscp-transmit keyword to cause all matched out-of-profile traffic to
be marked down as specified in the markdown map.
This example shows how to create a policy map named max-pol-ipp5 that uses the class-map named
ipp5, which is configured to trust received IP precedence values and is configured with a
maximum-capacity aggregate policer and with a microflow policer:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# policy-map max-pol-ipp5
Router(config-pmap)# class ipp5
Router(config-pmap-c)# trust ip-precedence
Router(config-pmap-c)# police 2000000000 2000000 conform-action set-prec-transmit 6
exceed-action policed-dscp-transmit
Router(config-pmap-c)# police flow 10000000 10000 conform-action set-prec-transmit 6
exceed-action policed-dscp-transmit
Router(config-pmap-c)# end
Verifying Policy Map Configuration
To verify policy map configuration, perform this task:
Command Purpose
Step1 Router(config-pmap-c)# end Exits policy map class configuration mode.
Note Enter additional class commands to create
additional classes in the policy map.
Step2 Router# show policy-map policy_name Verifies the configuration.