Session Level Policy; Subinterface Level Policy - Cisco 10000 Series Configuration Manual

Parameterized Services

Session Level Policy

The QoS policy defined at the session level is a hierarchical policy-map consisting of a:
•
•
Example 5-2
a child policy-map named subscriber_child_out contains multilevel priority scheduling for the voice and
video classes, and each priority class has a policing rate configured. The shaping rate configured in the
parent policy-map named subscriber_parent_out shapes the session-level traffic rate and is used to
determine the policing rate of the traffic classes. The parent policy-map includes ATM overhead
accounting even though the downstream interface on the ISG might be Ethernet. This behavior occurs
because the ISG must account for ATM overhead on the DSLAM-to-CPE link to ensure that the traffic
to each subscriber line is shaped to less than or equal to the DSLAM modem rate. For more information,
see
Example 5-2
Router(config)# policy-map subscriber_child_out
Router(config-pmap)# class voip
Router(config-pmap-c)# priority level 1
Router(config-pmap-c)# police percent 35
Router(config-pmap-c)# set cos 3
Router(config-pmap-c)# exit
Router(config-pmap)# class video
Router(config-pmap-c)# priority level 2
Router(config-pmap-c)# police percent 30
Router(config-pmap-c)# set cos 5
Router(config-pmap-c)# exit
Router(config-pmap)# class gaming
Router(config-pmap-c)# police 64000
!
Router(config)# policy-map subscriber_parent_out
Router(config-pmap)# class class-default
Router(config-pmap-c)# bandwidth remaining weight 20
Router(config-pmap-c)# shape average 128000 account qinq aal5 mux-pppoa
Router(config-pmap-c)# service-policy subscriber_child_out

Subinterface Level Policy

The QoS policy defined at the subinterface level contains a shaping action which shapes all of the traffic
for the entire subinterface.
Example 5-3
the subinterface to 512000 kbps.
Example 5-3
Router(config)# policy-map physical_ancp_shaper
Router(config-pmap)# class class-default
Router(config-pmap-c)# shape average 512000
Cisco 10000 Series Router Access Network Control Protocol Configuration Guide
5-4
Parent policy-map—Controls the traffic rate at the session level by shaping the traffic for the entire
session that services the policy.
Child policy-map—Defines the QoS actions to apply to the traffic classes. If policing is configured,
the shaping rate configured in the parent policy-map determines the policing rate applied to the
traffic classes.
shows how to configure a hierarchical policy-map for subscriber sessions. In the example,
Chapter 7, "Traffic Accounting."
Configuring QoS Policy at the Session Level
shows a policy-map configured at the subinterface level. This policy-map shapes traffic on
QoS policy-map at the Subinterface Level
Chapter 5 Dynamic Service Policy Modifications
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