H3C Technologies H3C WX3000 Series Unified Switches User 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.
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