如何用postman控制ODL设置端口的QoS,并下发流表到交换机做限速配置

准备工作：
postman
mininet (2.3.0d1), ovs(v2.5.0),
创建网络拓扑：
sudo mn –topo single,2 –cOntroller=remote,ip=192.168.1.157
h1—s1—h2
Opendaylight (Boron-SR3),安装后启动，并安装ovsdb组件；

feature:install odl-ovsdb-southbound-impl-ui
ODL所在主机的IP是192.168.1.157,Miminet的IP是192.168.1.181。
实验步骤
Mininet OVSDB连接到ODL
可以用OVSDB主动模式或是被动模式，本文使用主动模式,Mininet上打开6640端口监听
# ovs-vsctl set-manager ptcp:6640
ODL上添加node信息
URL=http://127.0.0.1:8181/restconf/config/network-topology:network-topology/topology/ovsdb:1/
Action=POST
COntent=

{
  “network-topology:node”:[
        {
                “node-id”: “ovsdb://192.168.1.181:6640”,
                “connection-info”: {
                        “ovsdb:remote-port”: 6640,
                        “ovsdb:remote-ip”: “192.168.1.181”
                }
        }
  ]
}

查看连接状态
ODL主机上：

Mininet上

查看获取的bridge的信息
URL=http://127.0.0.1:8181/restconf/operational/network-topology:network-topology/topology/ovsdb:1/node/ovsdb:%2F%2F192.168.1.181:6640%2Fbridge%2Fs1
Action=GET
注意URL中node后面的”/“用”%2F”代替
获取的内容很多，包括bridge:s1还有s1-eth1/s1-eth2的信息，就不贴了
向queue-entries中添加QUEUE-1
URL=http://127.0.0.1:8181/restconf/config/network-topology:network-topology/topology/ovsdb:1/node/ovsdb:%2F%2F192.168.1.181:6640/ovsdb:queues/QUEUE-1/
Action=PUT

{
"ovsdb:queues": [
 {
 "queue-id": "QUEUE-1",
 "queues-other-config": [
 {
 "queue-other-config-key": "max-rate",
 "queue-other-config-value": "1000000"
 }
 ]
 }
]
}

URL=http://127.0.0.1:8181/restconf/config/network-topology:network-topology/topology/ovsdb:1/node/ovsdb:%2F%2F192.168.1.181:6640/ovsdb:queues/QUEUE-2/
Action=PUT
COntent=

{
"ovsdb:queues": [
 {
 "queue-id": "QUEUE-2",
 "queues-other-config": [
 {
 "queue-other-config-key": "max-rate",
 "queue-other-config-value": "10000000"
 }
 ]
 }
]
}

接着添加QUEUE-3
URL=http://127.0.0.1:8181/restconf/config/network-topology:network-topology/topology/ovsdb:1/node/ovsdb:%2F%2F192.168.1.181:6640/ovsdb:queues/QUEUE-3/
Action=PUT
COntent=

{
"ovsdb:queues": [
 {
 "queue-id": "QUEUE-3",
 "queues-other-config": [
 {
 "queue-other-config-key": "max-rate",
 "queue-other-config-value": "100000000"
 }
 ]
 }
]
}

获取分配给两个queue的uuid
URL=http://127.0.0.1:8181/restconf/operational/network-topology:network-topology/topology/ovsdb:1/node/ovsdb:%2F%2F192.168.1.181:6640/ovsdb:queues/QUEUE-1/
Action=GET
return

所以QUEUE-1的uuid=”fdcf79a6-fd1d-4602-a119-1308aba594cb”
类似地，获取QUEUE-2的uuid=”bb895c20-f38d-4d49-babf-75faf1eba490”
获取QUEUE-3的uuid=”de9c017e-c092-4606-9fbf-4e2fbb8bc82f”
将三条queue的配置加到QoS entry
URL=http://127.0.0.1:8181/restconf/config/network-topology:network-topology/topology/ovsdb:1/node/ovsdb:%2F%2F192.168.1.181:6640/ovsdb:qos-entries/QOS-1/
Action=PUT
Content

{
"ovsdb:qos-entries": [
 {
 "qos-id": "QOS-1",
 "qos-type":"ovsdb:qos-type-linux-htb",
 "qos-other-config":[
 {
 "other-config-key":"max-rate",
 "other-config-value":"100000000"
 }
 ],
 "queue-list": [
 {
 "queue-number": "1",
 "queue-uuid": "fdcf79a6-fd1d-4602-a119-1308aba594cb"
 },
 {
 "queue-number": "2",
 "queue-uuid": "bb895c20-f38d-4d49-babf-75faf1eba490"
 },
 {
 "queue-number": "3",
 "queue-uuid": "de9c017e-c092-4606-9fbf-4e2fbb8bc82f"

 }
 ]
 }
]
}

即queue_1使用QUEUE-1策略，queue_2使用QUEUE-2策略
获取QOS的uuid
URL=http://127.0.0.1:8181/restconf/operational/network-topology:network-topology/topology/ovsdb:1/node/ovsdb:%2F%2F192.168.1.157:6640/ovsdb:qos-entries/QOS-1/
Action=GET
return

所以QOS-1的uuid=”2d44e4f2-ce14-4d99-8608-53388481a6d4”
将QOS-1应用到termination-point s1-eth1上
URL=http://127.0.0.1:8181/restconf/config/network-topology:network-topology/topology/ovsdb:1/node/ovsdb:%2F%2F192.168.1.181:6640%2Fbridge%2Fs1/termination-point/s1-eth1
Action=PUT
Content

{
"network-topology:termination-point": [
 {
 "ovsdb:name": "s1-eth1",
 "tp-id": "s1-eth1",
 "qos": "2d44e4f2-ce14-4d99-8608-53388481a6d4"
 }
 ]
}

获取s1-eth1的信息
URL=http://127.0.0.1:8181/restconf/operational/network-topology:network-topology/topology/ovsdb:1/node/ovsdb:%2F%2F192.168.1.181:6640%2Fbridge%2Fs1/termination-point/s1-eth1
Action=GET
Return

可以看到QOS-1已经应用成功。
测试：
设置流表，在网桥openflow:1添加流表命令，并设置流表的优先级和队列号，使流量在指定的队列上转发出去，并测试流量的带宽。
URL:http://127.0.0.1:8181/restconf/config/opendaylight-inventory:nodes/node/openflow:1/table/0/flow/1
Action=PUT
Content
第一次：

<queue-id>1</queue-id>
<queue>1</queue>

<flow xmlns="urn:opendaylight:flow:inventory">
    <priority>20priority>
    <flow-name>flow2flow-name>
    <flags>    SEND_FLOW_REM    flags>
    <match>
        <in-port>openflow:1:2in-port>     
    match>
    <hard-timeout>0hard-timeout>
    <idle-timeout>0idle-timeout>
    <COOKIE>30COOKIE>
    <id>1id>                                      
    <table_id>0table_id>
    <instructions>
        <instruction>
            <order>0order>
              <apply-actions>
                <action>
                   <order>1order>
                   <set-queue-action>
                      <queue-id>
                         1
                      queue-id>
                      <queue>
                         1
                      queue>
                  set-queue-action>
                action>
                <action>
                   <order>2order>
                   <output-action>
                      <output-node-connector>
                         openflow:1:1
                      output-node-connector>
                  output-action>
                action>
            apply-actions>
        instruction>
    instructions>
flow>

第二次：

<queue-id>2</queue-id>
<queue>2</queue>

下发流表项：

第三次：

3
3


由此，可以看到OoS确实被成功配置！
参考资料：
http://www.sdnlab.com/17601.html
http://docs.opendaylight.org/en/stable-boron/user-guide/ovsdb-user-guide.html
http://dannykim.me//danny/openflow/57771?ckattempt=1