Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual page 663

Chapter 39 Configuring MPLS QoS
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For more information on this command, see the Cisco IOS Switching Services Command Reference,
Release 12.3 located at this URL:
http://www.cisco.com/en/US/docs/ios/mpls/command/reference/mp_s1.html#set_mpls_experimental_i
mposition
Configuring a Policy Map Using the Police Command
Policing is a function in the PFC3B hardware that provides the ability to rate limit a particular traffic
class to a specific rate. The PFC3B supports aggregate policing and microflow policing.
Aggregate policing meters all traffic that ingresses into a port, regardless of different source, destination,
protocol, source port, or destination port. Microflow policing meters all traffic that ingresses into a port,
on a per flow (per source, destination, protocol, source port, and destination port). For additional
information on aggregate and microflow policing, see the
To configure traffic policing, use the police command. For information on this command, see the
Catalyst Supervisor Engine 32 PISA Cisco IOS Command Reference, Release 12.2ZY.
Command
Step 1
Router(config)# policy-map policy_name
Step 2
Router(config-pmap)# class-map name [match-all |
match-any]
Step 3
Router(config-pmap-c)# police {aggregate name}
Step 4
Router(config-pmap-c)# police bps burst_normal
burst_max conform-action action exceed-action action
violate-action action
Step 5
Router(config-pmap-c)# police flow {bps [burst_normal]
| [conform-action action] [exceed-action action]
Step 6
Router(config-pmap-c)# exit
This is an example of creating a policy map with a policer:
Router(config)# policy-map ip2tag
Router(config-pmap)# class iptcp
Router(config-pmap-c)# no set mpls exp topmost 3
OL-11439-03
The set mpls experimental imposition command is supported only on input interfaces
(imposition).
The set mpls experimental imposition command does not mark the EXP value directly; instead, it
marks the internal DSCP that is mapped to EXP through the internal DSCP-to-EXP global map.
It is important to note that classification (based on the original received IP header) and marking
(done to the internal DSCP) do not distinguish between IP-to-IP traffic and IP-to-MPLS traffic. The
commands that you use to mark IP ToS and mark EXP have the same result as when you mark the
internal DSCP.
To set the pushed label entry value to a value different from the default value during label
imposition, use the set mpls experimental imposition command.
You optionally can use the set mpls experimental imposition command with the IP precedence,
DSCP field, or QoS IP ACL to set the value of the MPLS EXP field on all imposed label entries.
When imposing labels onto the received IP traffic with the PFC3B, you can mark the EXP field using
the set mpls experimental imposition command.
Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
"Policers" section on page
Purpose
Creates a policy map.
Accesses the QoS class map configuration mode
to configure QoS class maps.
Adds the class to a shared aggregate policer.
Creates a per-class-per-interface policer.
Creates an ingress flow policer. (Not supported in
egress policy.)
Exits class-map configuration mode.
Configuring MPLS QoS
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