H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – QoS
H3C S7500 Series Ethernet Switches Chapter 1
QoS Configuration
1-13
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 1-5, Table 1-6,
Table 1-7, and Table 1-8.
Table 1-5 The 802.1p-priority-to-queue mapping
802.1p priority (CoS) Queue
0 2
1 0
2 1
3 3
4 4
5 5
6 6
7 7
Table 1-6 The local-precedence–to-queue mapping
Local precedence Queue
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
Table 1-7 The IP-precedence–to-queue mapping
IP precedence Queue
0 0
1 1
2 2