Figure 485 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 146
through
Table 146 The default CoS to DSCP/CoS to Queue mapping table
Input CoS value
0
1
2
3
4
5
6
7
Table 147 The default DSCP to CoS/DSCP to Queue mapping table
Input DSCP value
0 to 7
8 to 15
16 to 23
24 to 31
32 to 39
Table 147
list the default priority mapping tables.
Local precedence (Queue)
2
0
1
3
4
5
6
7
Local precedence (Queue)
0
1
2
3
4
476
DSCP
0
8
16
24
32
40
48
56
CoS
0
1
2
3
4