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SP+WRR-Mode: Strict-
Priority + Weight Round Robin Mode. In this mode, this
switch provides two scheduling groups, SP group and WRR group.
Queues in SP group and
WRR group are scheduled strictly based
on strict-
priority mode while the queues inside WRR group follow
the WRR mode. In SP+WRR mode, TC3 is in the SP group; TC0,
TC1 and TC2 belong to the WRR group and the weight value ratio
of TC0, TC1 and TC2 is 1:2:4.
In this way, when scheduling queues,
the switch allows TC3 to occupy the whole bandwidth following
the SP mode and the TC0, TC1 and TC2 in the WRR group will take
up the bandwidth according to their ratio 1:2:4.
Equ-Mode: Equal-Mode. In this mode, all th
e queues occupy the bandwidth
equally. The weight value ratio of all the queues is 1:1:1:1.
9.1.3 802.1P Priority
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/CoS mapping
The following entries are displayed on this screen
:
802.1P Priority Config
802.1P Priority:
Select Enable or Disable 802.1P Priority.
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