Lindy 25004 - Manual (Page 12)

User Manual English
5.10 Quality of Service
There are 8 priority levels (0 – 7) each port can be mapped to one of 4 classes (Low,
Normal, Medium and High) this can be done in QoS control.
There are 3 QoS Modes: Port-based, 802.1P and DSCP. The frames are sent by the
priority and Queue Mode settings. Strict Mode means the highest priority setting gets
first service to send frames. The lower priority frames must wait until all other higher
priority frames are sent. An example diagram is shown below with Strict Queue Mode:
When you choose 802.1P priority, the frames have VLAN Tag inside the switch. The
priority in the Tagged frame (2 bytes Tag in total) must be set by the application
program.