Configuring Quality of Service
QoS Advanced Mode
Cisco Small Business 300 Series Managed Switch Administration Guide 266
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• An action to be applied to frames that are over the limits (called out-of-
profile traffic), where such frames can be passed as is, dropped, or passed,
but remapped to a new DSCP value that marks them as lower-priority
frames for all subsequent handling within the device.
Assigning a policer to a class map is done when a class map is added to a policy.
If the policer is an aggregate policer, you must create it using the
Aggregate
Policer Page
.
Defining Aggregate Policers
An aggregate policer applies the QoS to one or more class maps, therefore one or
more flows. An aggregation policer can support class maps from different policies
and will apply the QoS to all its flow(s) in aggregation regardless of policies and
ports.
NOTE The switch supports aggregate policers and single policers only when operating in
Layer 2 mode.
To define an aggregate policer:
STEP 1 Click Quality of Service > QoS Advanced Mode > Aggregate Policer. The
Aggregate Policer Page opens.
This page displays the existing aggregate policers.
STEP 2 Click Add. The Add Aggregate Policer Page opens.
STEP 3 Enter the parameters.
• Aggregate Policer Name—Enter the name of the Aggregate Policer.
• Ingress Committed Information Rate (CIR)—Enter the maximum
bandwidth allowed in bits per second. See description in the Bandwidth
Page
.
• Ingress Committed Burst Size (CBS)—Enter the maximum burst size (even
if it goes beyond the CIR) in bytes. See description in the Bandwidth Page
.
• Exceed Action—Select the action to be performed on incoming packets
that exceed the CIR. Possible values are:
- Forward—Packets exceeding the defined CIR value are forwarded.
- Drop—Packets exceeding the defined CIR value are dropped.
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