ATL Telecom R1-SW Ethernet Switch - Manual (Page 190)

R1-SW24L2B User’s Manual
9-22
Configuring a Policy Map
A policy-map specifies which traffic class to act on. Actions can include trusting the CoS, DSCP,
or IP precedence values in the traffic class; setting a specific DSCP or IP precedence value in the
traffic class; or specifying the traffic bandwidth limitations and the action to take when the
traffic is out of profile. Before a policy-map can be effective, you must attach it to an interface
through defining a service policy. Multiple policy-maps can be attach to an interface and each
policy-map should be applied to different traffic class.
The followings are QoS actions which can be included in a policy-map:
y
filter
: Action for deciding whether the traffic is discarded or forwarded.
y
mark
: Action for configuring the values to be set in the DSCP, IP precedence, ToS, or
802.1P field of the packets which belong to the traffic class.
y
police
: Action for configuring the rate-limiting feature.
y
priority
: Action for configuring the priority(high or low) of the traffic. The priority is
used for selecting the traffic to be discarded when the system congestion.
y
bandwidth
: Action for configuring the minimum transmission bandwidth for the traffic
class.
y
weight
: Action for configuring the ration of the minimum transmission bandwidth for
the traffic class.
To apply multiple QoS actions to a traffic class, multiple QoS actions can be included in a
policy-map.