如何配置交换机端口的优先级，还是只能通过QOS策略才能实现！

第一阶段调试（基础网络配置）：

SW1：

<H3C>sys

System View: return to User View with Ctrl+Z.

[H3C]sysname SW1

[SW1]vlan 10

[SW1-vlan10]quit

[SW1]int gi 1/0/1

[SW1-GigabitEthernet1/0/1]port link-type trunk

[SW1-GigabitEthernet1/0/1]undo port trunk permit vlan 1

[SW1-GigabitEthernet1/0/1]port trunk permit vlan 10

[SW1-GigabitEthernet1/0/1]quit

[SW1]int range gi 1/0/2 to gi 1/0/3

[SW1-if-range]port link-type access

[SW1-if-range]port access vlan 10

[SW1-if-range]quit

[SW1]

R1：

<H3C>sys

System View: return to User View with Ctrl+Z.

[H3C]sysname R1

[R1]vlan 10

[R1-vlan10]quit

[R1]int vlan 10

[R1-Vlan-interface10]ip address 172.16.10.1 24

[R1-Vlan-interface10]quit

[R1]int gi 0/0

[R1-GigabitEthernet0/0]port link-mode bridge

[R1-GigabitEthernet0/0]port link-type trunk

[R1-GigabitEthernet0/0]undo port trunk permit vlan 1

[R1-GigabitEthernet0/0]port trunk permit vlan 10

[R1-GigabitEthernet0/0]quit

[R1]int gi 0/1

[R1-GigabitEthernet0/1]ip address 192.168.1.1 24

[R1-GigabitEthernet0/1]quit

第二阶段调试（WRED+WFQ关键配置）：

R1：

[R1]acl basic 2000

[R1-acl-ipv4-basic-2000]rule 0 permit source 172.16.10.2 0

[R1-acl-ipv4-basic-2000]quit

[R1]acl basic 2001

[R1-acl-ipv4-basic-2001]rule 0 permit source 172.16.10.3 0

[R1-acl-ipv4-basic-2001]quit

[R1]int gi 0/0

[R1-GigabitEthernet0/0]qos car inbound acl 2000 cir 100000 green remark-prec-pass 5 red pass

[R1-GigabitEthernet0/0]qos car inbound acl 2001 cir 100000 green remark-prec-pass 0 red pass

[R1-GigabitEthernet0/0]quit

[R1]int gi 0/1

[R1-GigabitEthernet0/1]qos wfq

[R1-GigabitEthernet0/1]qos wred enable

[R1-GigabitEthernet0/1]qos wred ip-precedence 5 low-limit 10 high-limit 250 discard-probability 10

[R1-GigabitEthernet0/1]qos wred ip-precedence 0 low-limit 10 high-limit 180 discard-probability 11

[R1-GigabitEthernet0/1]quit

查看QOS的显示信息：