H3C S7500 Series Operation Manual page 700

Operation Manual – QoS
H3C S7500 Series Ethernet Switches
A switch port supports eight output queues. The priority of each queue is different, and
packets in the queue with higher priority are sent preferentially. The switch puts a
packet into the corresponding queue according to the DSCP precedence, IP
precedence, 802.1p priority or local precedence of the packet. The mapping
relationship between precedence values and queues are shown in
Table 1-7, and
Table 1-5 The 802.1p-priority-to-queue mapping
0
1
2
3
4
5
6
7
Table 1-6 The local-precedence–to-queue mapping
0
1
2
3
4
5
6
7
Table 1-7 The IP-precedence–to-queue mapping
0
1
2
Table 1-8.
802.1p priority (CoS)
Local precedence
IP precedence
2
0
1
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
1-13
Chapter 1 QoS Configuration
Table 1-5, Table
Queue
Queue
Queue
1-6,