Q
UALITY
OF
S
ERVICE
13-2
Notes: 1. You can configure up to 16 rules per Class Map. You can also
include multiple classes in a Policy Map.
2. You should create a Class Map before creating a Policy Map.
Otherwise, you will not be able to select a Class Map from the
Policy Rule Settings screen (see page 13-9).
Configuring Quality of Service Parameters
To create a service policy for a specific category or ingress traffic, follow
these steps:
1. Use the “Class Map” to designate a class name for a specific category
of traffic.
2. Edit the rules for each class to specify a type of traffic based on an
access list, a DSCP or IP Precedence value, or a VLAN.
3. Use the “Policy Map” to designate a policy name for a specific manner
in which ingress traffic will be handled.
4. Add one or more classes to the Policy Map. Assign policy rules to each
class by “setting” the QoS value to be assigned to the matching traffic
class. The policy rule can also be configured to monitor the average
flow and burst rate, and drop any traffic that exceeds the specified rate,
or just reduce the DSCP service level for traffic exceeding the specified
rate.
5. Use the “Service Policy” to assign a policy map to a specific interface.
Configuring a Class Map
A class map is used for matching packets to a specified class.
Command Usage
• To configure a Class Map, follow these steps:
- Open the Class Map page, and click Add Class.
- When the Class Configuration page opens, fill in the “Class Name”
field, and click Add.
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