Policy-Based Qos Configurations; Classify Traffic - Dell Force10 S4810P Configuration Manual

Policy-based QoS Configurations

Policy-based QoS configurations consist of the components shown in
Figure 39-9. Constructing Policy-based QoS Configurations
0
Input
Policy
Map
L3 ACL

Classify Traffic

Class maps differentiate traffic so that you can apply separate quality of service policies to each class. For
both class maps, Layer 2 and Layer 3, FTOS matches packets against match criteria in the order that you
configure them.
Create a Layer 3 class map
A Layer 3 class map differentiates ingress packets based on DSCP value or IP precedence, and
characteristics defined in an IP ACL. You may specify more than one DSCP and IP precedence value, but
only one value must match to trigger a positive match for the class map.
1. Create a match-any class map using the command
the command
824
| Quality of Service (QoS)
Input Service Policy
7
Input
Policy
Map
Class Map
DSCP
L3
Policing
Fields
class-map match-all
Interface
Output Service Policy
0
Output
Policy
Map
Input QoS
Policy
Rate
Outgoing
Marking
class-map match-any
from CONFIGURATION mode, as shown in
Figure 39-9.
7
Output
Policy
Map
Output QoS
Policy
Rate
WRED B/W %
Limiting
or a match-all class map using
Figure 39-10.