Introduction To Priority Mapping Tables - HP 1910 User Manual

Local precedence is a locally significant precedence that the device assigns to a packet. A local
•
precedence value corresponds to an output queue. Packets with the highest local precedence are
processed preferentially.
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 device.
Figure 463 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 144 through
Table 144 The default CoS to DSCP/CoS to Queue mapping table
Input CoS value
0
1
2
3
4
5
6
Table 145 list the default priority mapping tables.
Local precedence (Queue)
2
0
1
3
4
5
6
Figure 463 shows the process of priority mapping on
448
DSCP
0
8
16
24
32
40
48