HP 6125XLG R2306-HP 6125XLG Blade Switch ACL and QoS Configuration Guide - Page 31

Priority trust mode on a port, Using the DSCP carried in packets for priority mapping.

Get HP 6125XLG PDF manuals and user guides View all HP 6125XLG manuals
Add to My Manuals
Save this manual to your list of manuals

Page 31 highlights

Priority trust mode on a port The priority trust mode on a port determines which priority is used for priority mapping table lookup. Port priority was introduced to use for priority mapping in addition to the priority fields carried in packets. The Switch Series provides the following priority trust modes: • Using the 802.1p priority carried in packets for priority mapping. Table 3 Priority mapping results of trusting the 802.1p priority (when the default dot1p-lp priority mapping table is used) 802.1p priority carried in packets 0 1 2 3 4 5 6 7 Local precedence 2 0 1 3 4 5 6 7 Queue ID 2 0 1 3 4 5 6 7 NOTE: When the 802.1p priority carried in packets is trusted, the port priority is used for priority mapping for packets which do not carry VLAN tags (namely, do not carry 802.1p priorities.) The priority mapping results are the same as not trusting packet priority, as shown in Table 5. • Using the DSCP carried in packets for priority mapping. Table 4 Priority mapping results of trusting the DSCP (when the default dscp-dot1p and dot1p-lp priority mapping tables are used) DSCP value carried in packets Local precedence 0 to 7 2 8 to 15 0 16 to 23 1 24 to 31 3 32 to 39 4 40 to 47 5 48 to 55 6 56 to 63 7 Queue ID 2 0 1 3 4 5 6 7 • Using the port priority as the 802.1p priority for priority mapping. The port priority is user configurable. 25

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
25
Priority trust mode on a port
The priority trust mode on a port determines which priority is used for priority mapping table lookup. Port
priority was introduced to use for priority mapping in addition to the priority fields carried in packets. The
Switch Series provides the following priority trust modes:
•
Using the 802.1p priority carried in packets for priority mapping.
Table 3
Priority mapping results of trusting the 802.1p priority (when the default dot1p-lp priority
mapping table is used)
802.1p priority carried in
packets
Local precedence
Queue ID
0
2
2
1
0
0
2
1
1
3
3
3
4
4
4
5
5
5
6
6
6
7
7
7
NOTE:
When the 802.1p priority carried in packets is trusted, the port priority is used for priority mapping
for packets which do not carry VLAN tags (namely, do not carry 802.1p priorities.) The priority
mapping results are the same as not trusting packet priority, as shown in
Table 5
.
•
Using the DSCP carried in packets for priority mapping.
Table 4
Priority mapping results of trusting the DSCP (when the default dscp-dot1p and dot1p-lp
priority mapping tables are used)
DSCP value carried in packets
Local precedence
Queue ID
0 to 7
2
2
8 to 15
0
0
16 to 23
1
1
24 to 31
3
3
32 to 39
4
4
40 to 47
5
5
48 to 55
6
6
56 to 63
7
7
•
Using the port priority as the 802.1p priority for priority mapping. The port priority is user
configurable.