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Catalyst 3750 Metro Switch Command Reference
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Chapter 2 Catalyst 3750 Metro Switch Cisco IOS Commands
police cir
If you set the CIR equal to the PIR, a traffic rate that is less than the CIR or that meets the CIR is in the
conform range. A traffic that exceeds the CIR rate is in the violate range.
If you set the PIR greater than the CIR, a traffic rate less than the CIR is in the conform range. A traffic
rate that exceeds the CIR but is less than or equal to the PIR is in the exceed range. A traffic rate that
exceeds the PIR is in the violate range.
If you apply a single-rate traffic policer to an ES port by using the police rate-bps burst-byte
[exceed-action {drop | policed-dscp-transmit}] policy-map class configuration command, the
software automatically sets the CIR and the PIR to the same value.
Examples This example shows how to configure a two-rate traffic policer on a class to limit traffic to an average
committed rate of 500 kbps and a peak rate of 1 Mbps:
Switch(config)# class-map c1
Switch(config-cmap)# match ip precedence 4
Switch(config-cmap))# exit
Switch(config)# policy-map policy1
Switch(config-pmap)# class c1
Switch(config-pmap-c)# police cir 500000 bc 10000 pir 1000000 be 10000 conform-action
transmit exceed-action set-prec-transmit 2 violate-action drop
Switch(config-pmap-c)# exit
Switch(config-pmap)# exit
Switch(config-pmap-c)# interface gigabitethernet1/1/1
Switch(config-if)# service-policy output policy1
Switch(config-if)# end
Traffic marked as conforming to the average committed rate (500 kbps) is sent as is. Traffic marked as
exceeding 500 kbps, but not exceeding 1 Mbps, is marked with IP precedence 2 and then sent. All traffic
marked as exceeding 1 Mbps is dropped. The burst parameters are set to 10000 bytes.
You can verify your settings by entering the show policy-map or the show running-config privileged
EXEC command.
Related Commands Command Description
class Specifies the name of the class whose traffic policy you want to create or
change.
police cir percent Configures a two-rate traffic policer for a class of traffic based on a
percentage of the available bandwidth on an ES port.
policy-map Creates or modifies a policy map that can be attached to multiple ports to
specify a service policy.
show policy-map Displays quality of service (QoS) policy maps.
show running-config Displays the operating configuration. For syntax information, use this link
to the Cisco IOS Release 12.2 Command Reference listing page:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/prod_command
_reference_list.html
Select the Cisco IOS Commands Master List, Release 12.2 to navigate to
the command.
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