Creating Class Maps - D-Link Web Smart DES-3252P Install Manual

Mapping DSCP to Drop Precedence
Drop Precedence (DP) enables marking frames that exceed policier CIR threshold. In a congested network,
frames containing a higher DP are discarded before frames with a lower DP.
To map DSCP values to DP values:
1. Click Basic Setup> Quality of Service > General Settings> DSCP to DP. The DSCP to DP opens.
Figure 133: DSCP to DP
The DSCP to DP Page contains the following fields:
•
DSCP In — Indicates the DSCP value for which the Drop Precedence is defined.
•
DP— Defines the Drop Precedence for the field.
2. Select the DSCP value.
3. Select the DP value.
4. Click . The DP value is mapped to the DSCP value, and the device is updated.

Creating Class Maps

One IP ACL and/or one MAC ACL comprise a class map. Class maps are configured to match packet criteria, and
are matched to packets on a first-fit basis. For example, Class Map A is assigned packets based only on an IP-
based ACL or a MAC-based ACL. Class Map B is assigned to packets based on both an IP-based and a MAC-
based ACL. To define class maps:
1. Click Advance Setup > Quality of Service > Policy Properties> Class Map. The Class Map Page opens:
Figure 134: Class Map Page
Page 201
Configuring Quality of Service
Configuring Advanced QoS Settings