Intel AXXSW1GB, User Manual

Page: 136 / 220

Intel® Gigabit Ethernet Switch AXXSW1GB User Guide 123
Defining Policy Profiles
This section contains information for configuring policy profiles, and includes the
following topics:
•
Defining Policies
Defining Policies
A policy is a collection of classes, each of which is a combination of a class map and a
QoS action to apply to matching traffic. Classes are applied in a first-fit manner within a
policy.
Before configuring policies for classes whose match criteria are defined in a class map, a
class map must first be defined, or the name of the policy map to be created, added to, or
modified must first be specified. Class policies can be configured in a policy map only if
the classes have defined match criteria.
An aggregate policer can be applied to multiple classes in the same policy map, but an
aggregate policer cannot be used across different policy maps. Define an aggregate policer
if the policer is shared with multiple classes. Policiers in one port cannot be shared with
other policers in another device. Traffic from two different ports can be aggregated for
policing purposes.