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Configuration Procedure:
Step Operation Description
1 Select the port priority Required. On QoS→DiffServ→Port Priority page,
configure the port priority.
2 Configure the mapping
relation between the CoS
priority and TC
Required. On QoS→DiffServ→802.1P/CoS mapping
page, configure the mapping relation between the CoS
and TC.
3 Select a schedule mode Required. On QoS→DiffServ→Schedule Mode
page, select a schedule mode.
9.1.2 DSCP Priority
On this page you can configure DSCP priority. DSCP (DiffServ Code Point) is a new definition to IP
ToS field given by IEEE. This field is used to divide IP datagram into 64 priorities. When DSCP
Priority is enabled, IP datagram are mapped to different priority levels based on DSCP priority
mode; non-IP datagram with 802.1Q tag are mapped to different priority levels based on 802.1P
priority mode if 8021.1P Priority mode is enabled; the untagged non-IP datagram are mapped based
on port priority mode.
Choose the menu QoS→DiffServ→DSCP Priority to load the following page.
Figure 9-7 DSCP Priority
The following entries are displayed on this screen:
DSCP Priority Config
DSCP Priority: Select Enable or Disable DSCP Priority.
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