H3C Technologies H3C WX3000 Series Unified Switches - Manual (Page 351)

37-7
Trusting the DSCP precedence
In this mode, you can specify to process the received packets in one of the following ways.
z
Keeping the original packet precedence unchanged (the default mode)
z
Replacing the original packet precedence with the corresponding one (the automap mode)
z
Looking up the DSCP-precedence-to-DSCP-precedence mapping table for the local DSCP
precedence and then looking up the DSCP-precedence-to-other-precedence mapping table based
on the new DSCP precedence for the one to be assigned to the packets (the remap mode)
The devices provide COS-precedence-to-other-precedence, DSCP-precedence-to-other-precedence,
and DSCP-precedence-to-DSCP- precedence mapping tables for priority mapping.
Table 37-4 through
Table 37-6 list the default settings of these tables.
Table 37-4 The default COS-precedence-to-other-precedence mapping table of the devices
802.1p precedence Target local precedence
Target drop
precedence Target DSCP
precedence
0 2 0 16
1 0 0 0
2 1 0 8
3 3 0 24
4 4 0 32
5 5 0 40
6 6 0 48
7 7 0 56
Table 37-5 The default DSCP-precedence-to-other-precedence mapping table of the devices
DSCP precedence Target local precedence
Target drop
precedence Target 802.1p
precedence
0 to 7 0 1 1
8 to 15 1 1 2
16 to 23 2 1 0
24 to 31 3 1 3
32 to 39 4 0 4
40 to 47 5 0 5
48 to 55 6 0 6
56 to 63 7 0 7
Table 37-6 The default DSCP-precedence-to-DSCP-precedence mapping table of the devices
DSCP precedence Target DSCP precedence
0 0
1 1
2 2