LevelOne MSL-3S79 - Manual (Page 49)

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6.6.4.3 COS Configuration
Set up the COS priority level.
COS priority: Set up the COS priority level 0~7, 7 is the highest priority.
Click Apply .
COS Configuration interface
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6.6.4.4 DSCP Configuration
Set up the DSCP priority.
Mapping DSCP priority: The system provides 0~63 DSCP priority level. Each
level has 8 types of priority – 0~7, 7 is the highest priority. When the IP packet is
received, the system will check the DSCP level value in the IP packet that has been
received. For example: user set the DSCP level 25 as high. When the packet received,
the system will check the DSCP value of the received IP packet. If the DSCP value of
received IP packet is 25(priority = high), and then the packet priority will have highest
priority.
Click Apply .