Quality of Service
QoS Advanced Mode
Cisco 500 Series Stackable Managed Switch Administration Guide 622
28
To define a Class Map:
STEP 1 Click Quality of Service > QoS Advanced Mode > Class Mapping.
This page displays the already-defined class maps.
STEP 2 Click Add.
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.
STEP 3 Enter the parameters.
• 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 of the IP based ACLs in the class map.
-
MAC
—A packet must match the MAC based ACL in the class map.
-
IP and MAC
—A packet must match the IP based ACL and the MAC based
ACL in the class map.
-
IP or MAC
—A packet must match either the IP based ACL or the MAC
based ACL in the class map.
• IP—Select the IPv4 based ACL or the IPv6 based ACL for the class map.
• MAC—Select the 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.
STEP 4 Click Apply. The Running Configuration file is updated.
QoS Policers
NOTE QoS policers are not supported on Sx500 devices in Layer 3 system mode. They
are always supported on SG500X devices.
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.
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