User's Manual

35-59
Catalyst 3750 Switch Software Configuration Guide
OL-8550-09
Chapter 35 Configuring QoS
Configuring Standard QoS
• When you configure a default traffic class by using the class class-default policy-map configuration
command, unclassified traffic (traffic that does not meet the match criteria specified in the traffic
classes) is treated as default traffic class (class-default).
Beginning in privileged EXEC mode, follow these steps to create a hierarchical policy map:
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
class-map [match-all | match-any]
class-map-name
Create a VLAN-level class map, and enter class-map configuration
mode. For information about creating a class map, see the “Classifying
Traffic by Using Class Maps” section on page 35-51.
By default, no class maps are defined.
• (Optional) Use the match-all keyword to perform a logical-AND
of all matching statements under this class map. All match criteria
in the class map must be matched.
• (Optional) Use the match-any keyword to perform a logical-OR of
all matching statements under this class map. One or more match
criteria must be matched.
• For class-map-name, specify the name of the class map.
If neither the match-all or match-any keyword is specified, the default
is match-all.
Note Because only one match command per class map is supported,
the match-all and match-any keywords function the same.
Step 3
match {access-group acl-index-or-name |
ip dscp dscp-list | ip precedence
ip-precedence-list}
Define the match criterion to classify traffic.
By default, no match criterion is defined.
Only one match criterion per class map is supported, and only one ACL
per class map is supported.
• For access-group acl-index-or-name, specify the number or name
of the ACL.
• For ip dscp dscp-list, enter a list of up to eight IP DSCP values to
match against incoming packets. Separate each value with a space.
The range is 0 to 63.
• For ip precedence ip-precedence-list, enter a list of up to eight
IP-precedence values to match against incoming packets. Separate
each value with a space. The range is 0 to 7.
Step 4
exit Return to class-map configuration mode.
Step 5
exit Return to global configuration mode.