Related Topics
Access Control Lists, on page 548
QoS ACL Guidelines, on page 540
Examples: Classifying Traffic by Using ACLs, on page 631
Classifying Traffic by Using Class Maps
You use the class-map global configuration command to name and to isolate a specific traffic flow (or class)
from all other traffic. The class map defines the criteria to use to match against a specific traffic flow to further
classify it. Match statements can include criteria such as an ACL, IP precedence values, or DSCP values. The
match criterion is defined with one match statement entered within the class-map configuration mode.
You can also create class maps during policy map creation by using the class policy-map configuration
command.
Note
SUMMARY STEPS
1.
configure terminal
2.
Use one of the following:
•
access-list access-list-number {deny | permit} source [source-wildcard]
•
access-list access-list-number {deny | permit} protocol source [source-wildcard] destination
[destination-wildcard]
•
ipv6 access-list access-list-name {deny | permit} protocol {source-ipv6-prefix/prefix-length | any
| host source-ipv6-address} [operator [port-number]] {destination-ipv6-prefix/ prefix-length | any
| host destination-ipv6-address} [operator [port-number]] [dscp value] [fragments] [log] [log-input]
[routing] [sequence value] [time-range name]
•
mac access-list extended name {permit | deny} {host src-MAC-addr mask | any | host dst-MAC-addr
| dst-MAC-addr mask} [type mask]
3.
class-map [match-all | match-any] class-map-name
4.
match {access-group acl-index-or-name | ip dscp dscp-list | ip precedence ip-precedence-list}
5.
end
6.
show class-map
7.
copy running-config startup-config
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
592
How to Configure QoS
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