Filter
Top Products
Step Operation Description
3 Map the DSCP priority to the
priority level
Required. Select DSCP priority and the corresponding
priority level.
4 Select a schedule mode Required. Log on to the Schedule Mode page to
select a schedule mode.
9.1.3 802.1P/CoS Mapping
On this page you can configure the mapping relation between the 802.1P priority tag-id/CoS-id and
the TC-id.
802.1P gives the Pri field in 802.1Q tag a recommended definition. This field, ranging from 0-7, is
used to divide packets into 8 priorities. 802.1P Priority is enabled by default, so the packets with
802.1Q tag are mapped to different priority levels based on 802.1P priority mode but the untagged
packets are mapped based on port priority mode. With the same value, the 802.1P priority tag and
the CoS will be mapped to the same TC.
Choose the menu QoS→DiffServ→802.1P/CoS Mapping to load the following page.
Figure 9-8 802.1P Priority
The following entries are displayed on this screen:
802.1P Priority Config
802.1P Priority: Select Enable/Disable 802.1P Priority.
Priority and CoS-mapping Config
Tag-id/Cos-id: Indicates the precedence level defined by IEEE802.1P and 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. By default, the mapping
relation between tag/cos and the egress queue is: 0-TC1,
1-TC0, 2-TC0, 3-TC1, 4-TC2, 5-TC2, 6-TC3, 7-TC3.
11
6