HP Compaq Presario,Presario 1910, Руководство пользователя

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The device provides the following priority trust modes on a port:
•
Trust packet priority —The device assigns to the packet the priority parameters corresponding to the
packet’s priority from the mapping table.
• Trust port priority —The device assigns a priority to a packet by mapping the priority of the
receiving port.
You can select one priority trust mode as needed. Figure 481 shows the process of priority mapping on
a device.
Figure 481 Priority mapping process
Introduction to priority mapping tables
The device provides the following types of priority mapping tables:
•
CoS to DSCP —802.1p--to-DSCP mapping table.
• CoS to Queue —802.1p--to-local mapping table.
• DSCP to CoS —DSCP-to-802.1p mapping table, which applies to only IP packets.
•
DSCP to DSCP —DSCP-to-DSCP mapping table, which applies to only IP packets.
•
DSCP to Queue —DSCP-to-local mapping table, which applies to only IP packets.
Table 142 through Table 143 list the default priority mapping tables.
Table 142 The default CoS to DSCP/CoS to Queue mapping table
Input CoS value Local precedence (Queue) DSCP
0 2 0
1 0 8
2 1 16
3 3 24
4 4 32
5 5 40
6 6 48
7 7 56