Cisco Catalyst 2950 Software Manual page 323

Chapter 13 Configuring QoS
Beginning in privileged EXEC mode, follow these steps to create a policy map:
Command
Step 1
configure terminal
Step 2
access-list access-list-number {deny |
permit} {source source-wildcard | host
source | any}
or
access-list access-list-number
{deny | permit | remark} protocol
{source source-wildcard | host source |
any } [operator port] {destination
destination-wildcard | host destination |
any} [operator port]
or
mac access-list extended name
(deny | permit} {any | host source MAC
address} {any | host destination MAC
address} [aarp | amber | dec-spanning |
decnet-iv | diagnostic | dsm | etype-6000 |
etype-8042 | lat | lavc-sca | mop-console |
mop-dump | msdos | mumps | netbios |
vines-echo |vines-ip | xns-idp]
Step 3 policy-map policy-map-name
Step 4 class class-map-name [ access-group
acl-index-or-name ]
Step 5 set {ip dscp new-dscp}
78-11380-03
Purpose
Enter global configuration mode.
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 13-14.
Note Deny statements are not supported for QoS ACLS. See the
"Classification Based on QoS ACLs" section on page 13-5
more details.
For more information on this command, see the
Extended ACLs" section on page
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.
For access-group acl-index-or-name , specify t he number or name of the
ACL created in Step 2.
Note In a policy map, the class named class-default is not supported.
The switch does not filter traffic based on the policy map
defined by the class class-default policy-map configuration
command.
Classify IP traffic by setting a new value in the packet.
For ip dscp new-dscp, enter a new DSCP value to be assigned to the
classified traffic. The supported DSCP values are 0, 8, 10, 16, 18, 24,
26, 32, 34, 40, 46, 48, and 56.
Catalyst 2950 Desktop Switch Software Configuration Guide
Configuring QoS
"Classifying Traffic by Using ACLs"
"Creating Named MAC
12-20.
for
13-19