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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.
3 Select a schedule mode Required. On QoS→DiffServ→Schedule Mode page,
select a schedule mode.
9.1.2 802.1P/CoS Mapping
On this page you can configure 802.1P priority. 802.1P gives the Pri field in 802.1Q tag a
recommended definition. This field is used to divide packets into 8 priorities. When 802.1P Priority is
enabled, the packets with 802.1Q tag are mapped to different priority levels based on 802.1P priority
mode. The untagged packets are mapped based on port priority mode.
Choose the menu QoS→DiffServ→802.1P Priority to load the following page.
Figure 9-7 802.1P Priority
The following entries are displayed on this screen:
¾ 802.1P Priority Config
802.1P Priority: Select Enable/Disable 802.1P Priority.
¾ Priority Level
Tag-id/CoS-id: Indicates the precedence level defined by IEEE802.1P or the CoS
ID.
Queue TC-id: Indicates the priority level of egress queue the packets with tag
and CoS-id are mapped to. The priority levels of egress queue are
labeled as TC0, TC1, TC2 and TC3.
Note:
To complete QoS function configuration, you have to go to the Schedule Mode page to select a
schedule mode after the configuration is finished on this page.