Milan Technology MIL-SM8002TG - Manual (Page 100)

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assigned.
TOS only: the port priority will only follow the TOS priority that you have
assigned.
COS first: the port priority will follow the COS priority first, and then other priority
rule.
TOS first: the port priority will follow the TOS priority first, and the other priority
rule.
Save the configuration.
QoS Policy and Priority Type interface
Default Port Priority
Configure per port priority level.
Port 1 ~ 10: each port has 4 priority levels – High, Middle, Low, and Lowest.