User manual
DSCP field is a superset of the IP precedence field, DSCP field definition is backward-compatible with IP
precedence field.
So far, the defined DSCP with default DSCP, the value is 0; class selector DSCP defined as the
backward-compatible with IP precedence, the value(8,16,24,32,40,48,56); Expedited Forwarding (EF), generally
used for low latency service, the recommended value is 46 (101110); identified by forwarding (AF) defines four
service levels, each service level has 3 down process, so spent 12 DSCP values
((10,12,14), (18,20,22),
(26,28,30), (34,36,38)).
The priority value of the device (1-16) is defined as the lowest priority, as the first queue. Priority value
(17-32) is defined as the second queue, the priority value (33-48) is defined as the third queue, the priority value
(49-64 is defined as the fastest queue, the highest priority.
6.6
Redundancy
6.6.1 Port Trunking
1. Port priority is the highest level, don't need to check other QoS attributes is discharged into the highest priority queue if you
set the port priority as 1.
2. DSCP priority comes second, unless we do not set DSCP, therefore will check 802.1p priority, otherwise it will line up
according to the DSCP settings.
3. As above, the three priority can be used alone, can also be used at the same time, queuing according to the above rules.