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Quality of Service
Configuring QoS Advanced Mode
STEP 3
STEP 4
Cisco 220 Series Smart Plus Switches Administration Guide Release 1.0.0.x
A new class map is added by selecting one or two ACLs and giving the class map
a name. If a class map has two ACLs, you can specify that a frame must match
both ACLs, or that it must match either one or both of the ACLs selected.
Enter the following information:
•
Class Map Name—Enter the name of a new class map.
•
Match ACL Type—The criteria that a packet must match in order to be
considered to belong to the flow defined in the class map. The options are:
IP
-
—A packet must match either IPv4-based ACL or IPv6-based ACL in
the class map.
MAC
-
—A packet must match the MAC-based ACL in the class map.
MAC or IP
-
—A packet must match either the IP-based ACL or the MAC-
based ACL in the class map.
•
IP—Select an IPv4-based ACL or IPv6-based ACL for the class map.
•
MAC—Select a MAC-based ACL for the class map.
•
Preferred ACL—Select whether packets are first matched to an IP-based
ACL or a MAC-based ACL.
Click Apply. The Running Configuration is updated.
QoS Policers
You can measure the rate of traffic that matches a pre-defined set of rules, and to
enforce limits, such as limiting the rate of file-transfer traffic that is allowed on a
port.
This can be done by using the ACLs in the class map(s) to match the desired
traffic, and by using a policer to apply the QoS on the matching traffic.
A policer is configured with a QoS specification. There are two kinds of policers:
•
Single (Regular) Policer—A single policer applies the QoS to a single class
map, and to a single flow based on the policer's QoS specification. When a
class map using single policer is bound to multiple ports, each port has its
own instance of single policer; each applying the QoS on the class map
(flow) at ports that are otherwise independent of each other. A single
policer is created on the Policy Class Maps page.
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