SR8808-X SPC单板 WRR队列+SP队列实现案例

用户网络描述如下：Device为出口设备，G0/2接口未三种业务流经的内网口，穿过Device从G0/1接口出去。

需求详情：

（2）要求A业务（192.168.1.0/24）网段的业务确保转发，即要最高的优先级去转发。

（2）要求B业务（192.1681.2.0/24）和C业务（192.168.3.0/24）业务以2:1的权重去使用接口剩余带宽。

一般的带宽保证，我们用CBQ的EF和AF就很方便的实现，但是SR88X的spc业务单板不支持CBQ的EF、AF队列；而且客户的需求是要A业务确保最高优先级转发，剩下的业务也有相应的权重去分配剩余带宽，这样我们可以用wrr+sp的方式去实现。

# 在内网接口对不同业务进行优先级重标记。

# 匹配A业务

[Device]acl advanced 3000

[Device-acl-ipv4-adv-3000]rule permit ip source 192.168.1.0 0.0.0.255

[Device-acl-ipv4-adv-3000]quit

[Device]traffic classifier a

[Device-classifier-a]if-match acl 3000

[Device-classifier-a]quit

# 动作是重标记，这里的编号和wrr下面的编号有对应关系，这里的本地优先级队列和出端口的对了编号一致

[Device]traffic behavior a

[Device-behavior-a]remark dot1p 7

[Device-behavior-a]quit

# 用相同的方式对B和C业务进行重标记

[Device]acl advanced 3001

[Device-acl-ipv4-adv-3001]rule permit ip source 192.168.2.0 0.0.0.255

[Device-acl-ipv4-adv-3001]quit

[Device]acl advanced 3002

[Device-acl-ipv4-adv-3002]rule permit ip source 192.168.3.0 0.0.0.255

[Device-acl-ipv4-adv-3002]quit

[Device]traffic classifier b

[Device-classifier-b]if-match acl 3001

[Device-classifier-b]quit

[Device-behavior-b]remark dot1p 6

[Device-behavior-b]quit

[Device]traffic classifier c

[Device-classifier-c]if-match acl 3002

[Device-classifier-c]quit

[Device]traffic behavior c

[Device-behavior-c]remark dot1p 3

[Device-behavior-c]quit

# 对traffic和behavior绑定并应用在接口

[Device]qos policy 1

[Device-qospolicy-1]classifier a behavior a

[Device-qospolicy-1]classifier b behavior b

[Device-qospolicy-1]classifier c behavior c

[Device-qospolicy-1]quit

[Device]interface GigabitEthernet 0/2

[Device-GigabitEthernet0/2]qos trust auto  //涉及qos优先级的出入接口都必须配置qos trust auto，使能自动提取报文中的优先级字段进行优先级映射

[Device-GigabitEthernet0/2]qos apply policy 1 inbound

[Device-GigabitEthernet0/2]quit

[Device]interface GigabitEthernet 0/1

[Device-GigabitEthernet0/1] qos trust auto

[Device-GigabitEthernet0/1] qos lr outbound cir 200000 cbs 12500000

//200000kbps 即200Mbps

[Device-GigabitEthernet0/1] qos wrr weight       //使能wrr队列

[Device-GigabitEthernet0/1] qos wrr 7 group sp   //进入7队列的业务A具有绝对优先级

[Device-GigabitEthernet0/1] qos wrr 6 group 1 weight 10   //6队列具有权重10

[Device-GigabitEthernet0/1] qos wrr 3 group 1 weight 5    //3队列具有权重5

[Device-GigabitEthernet0/1]quit

#更多命令详细解释请参考如下