Cisco Catalyst 3550 series Software Configuration Manual page 630

Configuring Standard QoS
Command
Step 3 access-list access-list-number {deny |
permit} source [source-wildcard]
or
access-list access-list-number {deny |
permit} protocol source [source-wildcard]
destination [destination-wildcard]
or
mac access-list extended access-list name
{permit | deny} {source-MAC-addr mask |
any | host} {destination-MAC-addr mask |
any | host} [ethertype]
Step 4
class-map [match-all | match-any]
class-map-name
Step 5 mls qos cos policy-map
Step 6 policy-map policy-map-name
Step 7 class class-map-name
Catalyst 3550 Multilayer Switch Software Configuration Guide
29-44
Purpose
Create an IP standard or extended ACL for IP traffic or a Layer 2 MAC
ACL for non-IP traffic, repeating the command as many times as
necessary.
For more information, see the
section on page 29-36.
When creating an access list, remember that, by default, the end
Note
of the access list contains an implicit deny statement for
everything if it did not find a match before reaching the end.
Create a class map to classify traffic as necessary. For more
information, see the "Classifying Traffic on a Physical-Port Basis by
Using Class Maps" section on page 29-39
on a Per-Port Per-VLAN Basis by Using Class Maps" section on
page 29-41.
(Optional) Define the CoS value of a port in a policy map. When you
enter this command, you must also enter the trust dscp policy-map
configuration command in Step 8 and the set cos new-cos policy-map
configuration command in Step 9.
Create a policy map by entering the policy map name, and enter
policy-map configuration mode.
By default, no policy maps are defined.
The default behavior of a policy map is to set the DSCP to 0 if the
packet is an IP packet and to set the CoS to 0 if the packet is tagged. No
policing is performed.
Define a traffic classification, and enter policy-map class configuration
mode.
By default, no policy map class-maps are defined.
If a traffic class has already been defined by using the class-map global
configuration command, specify its name for class-map-name in this
command.
Chapter 29
"Classifying Traffic by Using ACLs"
and the "Classifying Traffic
Configuring QoS
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