HP 1920 Series User Manual page 483

Table 146 Description on DSCP values
802.1p priority
802.1p priority lies in Layer 2 packet headers and applies to occasions where Layer 3 header analysis
is not needed and QoS must be assured at Layer 2.
Figure 456 An Ethernet frame with an 802.1Q tag header
As shown in
bytes in length), whose value is 0x8100, and the tag control information (TCI, two bytes in length).
457
"802.1p priority," because its use is defined in IEEE 802.1p.
priority.
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DSCP value (decimal)
46
10
12
14
18
20
22
26
28
30
34
36
38
8
16
24
32
40
48
56
0
Figure 456, the 4-byte 802.1Q tag header consists of the tag protocol identifier (TPID, two
presents the format of the 802.1Q tag header. The priority in the 802.1Q tag header is called
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DSCP value (binary)
101110
001010
001100
001110
010010
010100
010110
011010
011100
011110
100010
100100
100110
001000
010000
011000
100000
101000
110000
111000
000000
Table 147
470
Description
ef
af11
af12
af13
af21
af22
af23
af31
af32
af33
af41
af42
af43
cs1
cs2
cs3
cs4
cs5
cs6
cs7
be (default)
Figure
presents the values for 802.1p