Cisco 500 series Administration Manual page 431

Stackable managed switch
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Configuring Quality of Service
QoS Advanced Mode
STEP 1
STEP 2
STEP 3
NOTE
STEP 1
STEP 2
Cisco 500 Series Stackable Managed Switch Administration Guide
To map DSCP values:
Click Quality of Service > QoS Advanced Mode > Out of Profile DSCP Mapping.
Out of Profile DSCP Mapping
The
the change-the-DSCP-value of traffic entering or leaving the switch.
DSCP In displays the DSCP value of the incoming packet that needs to be re-
marked to an alternative value.
Select the DSCP Out value to where the incoming value is mapped.
Click Apply. The Running Configuration file is updated with the new DSCP
Mapping table.
Defining Class Mapping
A Class Map defines a traffic flow with ACLs (Access Control Lists). A MAC ACL,
IP ACL, and IPv6 ACL can be combined into a class map. Class maps are
configured to match packet criteria on a match-all or match-any basis. They are
matched to packets on a first-fit basis, meaning that the action associated with the
first-matched class map is the action performed by the system. Packets that
matches the same class map are considered to belong to the same flow.
Defining class maps does not have any effect on QoS; it is an interim step, enabling
the class maps to be used later.
If more complex sets of rules are needed, several class maps can be grouped into
a super-group called a policy (see
The Class Mapping page shows the list of defined class maps and the ACLs
comprising each, and enables you to add/delete class maps.
To define a Class Map:
Click Quality of Service > QoS Advanced Mode > Class Mapping. The Class
Mapping page is displayed.
This page displays the already-defined class maps.
Click Add. The Add Class Mapping page is displayed.
page is displayed. This page enables setting
Configuring a
Policy).
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