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

824 | Quality of Service (QoS)
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Policy-based QoS Configurations
Policy-based QoS configurations consist of the components shown in Figure 39-9.
Figure 39-9. Constructing Policy-based QoS Configurations
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
class-map match-any or a match-all class map using
the command
class-map match-all from CONFIGURATION mode, as shown in Figure 39-10.
Input Service Policy
Input
Policy
Map
0
7
7
0
Class Map
Input QoS
Policy
L3 ACL
DSCP
L3
Fields
Rate
Policing
Outgoing
Marking
Rate
Limiting
WRED
B/W %
Input
Policy
Map
Output
Policy
Map
Output
Policy
Map
Output Service Policy
Interface
Output QoS
Policy