HP V1910, User Manual

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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. a shows the process of priority mapping on a device.
a.
Priority mapping process
Introduction to priority mapping tables
The device provides various types of priority mapping table, as listed below:
 CoS to DSCP : 802.1p-to-DSCP priority mapping table.

CoS to Queue : 802.1p-to-local priority mapping table.

DSCP to CoS : DSCP-to-802.1p priority mapping table, which is applicable to only IP packets.
 DSCP to DSCP : DSCP-to-DSCP priority mapping table, which is applicable to only IP packets.

DSCP to Queue : DSCP-to-local priority mapping table, which is applicable to only IP packets.
1 through 2 list the default priority mapping tables.
1.
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