本文主要介绍了有OpenFlow硬件设备的情况下与controller如何搭建一个OpenFlow环境。
我的设备:controller机器*1 openflow交换机*1 PC机若干
平台细节:
controller机器:Ubuntu12.04+Floodlight
PC机:系统随意
一.controllerd在ubuntu系统下安装Floodlight,并运行，作为OpenFlow环境的控制器
安装Floodlight
[controller@host ]# sudo apt-get install build-essential default-jdk ant python-dev
[controller@host ]# git clone git://github.com/floodlight/floodlight.git
[controller@host ]# cd floodlight
[controller@host ]# git checkout fl-last-passed-build 或者 git checkout stable
[controller@host ]# ant 整合
[controller@host ]# java -jar target/floodlight.jar 运行floodlight
如果执行卡住,并报错为address already use.说明端口被占用
解决方法为两种(选一):
1: [controller@host ]# netstat -anp | grep 8080 查看端口
[controller@host ]# kill -9
2: 修改配置文件,使其不用被占用的端口
在floodlight目录下
[controller@host ]# vi src/main/resources/floodlightdefault.properties
把8080改成8085或其它，再整合
[controller@host ]# ant
再运行floodlight
注:运行后本终端为卡住状态,并实时输出debug信息.
正常信息为:
.......
12:49:05.079 [main] INFO o.r.Component.InternalRouter.Server - Starting the Simple [HTTP/1.1] server on port 8080
12:49:05.132 [main] DEBUG n.f.core.internal.Controller - OFListeners for FLOW_REMOVED: staticflowentry,
12:49:05.132 [main] DEBUG n.f.core.internal.Controller - OFListeners for PACKET_IN: linkdiscovery,topology,devicemanager,firewall,forwarding,
12:49:05.132 [main] DEBUG n.f.core.internal.Controller - OFListeners for PORT_STATUS: linkdiscovery,
12:49:05.253 [main] INFO n.f.core.internal.Controller - Listening for switch connections on 0.0.0.0/0.0.0.0:6633
12:49:11.388 [debugserver-main] INFO n.f.jython.JythonServer - Starting DebugServer on port 6655
12:49:11.558 [New I/O server worker #1-1] INFO n.f.core.internal.Controller - New switch connection from /10.0.0.1:47324
12:49:11.601 [New I/O server worker #1-1] DEBUG n.f.core.internal.Controller - This controller's role is null, not sending role request msg to null
12:49:11.609 [main] DEBUG n.f.s.StaticFlowEntryPusher - addedSwitch OFSwitchImpl [/10.0.0.1:47324 DPID[00:34:a0:b3:cc:a3:5f:40]]; processing its static entries
12:49:11.785 [New I/O server worker #1-1] DEBUG n.f.d.internal.DeviceManagerImpl - New device created.......
.......
二.配置好openflow交换机
配置好交换机的管理地址,可先用串口登,使管理口地址与controller地址在同一个网络中.
在交换机上配置controller地址:
如:
先用命令新建一个bridge,并加入其接口.
[switch@shell ]# ovs-vsctl set-controller br0 tcp:192.168.1.1:6633 --->此地址为controller IP地址
三.将若干PC机与交换机接口相连,并在controller上查看floodlight的信息，可以发现有OpenFlow Switch与之相连,并能查看连接上的PC机与拓扑。进入http://localhost:8080/ui/index.html
8080为floodlightdefault.properties文件中所指定的端口号.可以登录floodligt的web界面.
四.通过controller控制openflow交换机
当floodlightdefault.properties配置文件中加载了转发模块(net.floodlightcontroller.forwarding.Forwarding).则连接在交换机上的PC机是可以互相ping通的.floodlight中没有加载此模块时,须要用使添加流表来控制流向.下面介绍一下从控制器端对openflow交换机添加与删除流表.
添加流表:
[controller@host ]# curl -d '{"switch": "00:00:00:00:00:00:00:01", "name":"flow-mod-1", "cookie":"0", "priority":"2232", "ingress-port":"1","active":"true", "actions":"output=2"}' http://
[controller@host ]# curl -d '{"switch": "00:00:00:00:00:00:00:01", "name":"flow-mod-2", "cookie":"0", "priority":"2232", "ingress-port":"2","active":"true", "actions":"output=1"}' http://
这两条流表为1号端口的流向2号接口,2号端口的流向1号接口.
连接在这两个接口上的PC机可以互相通信.
可变参数解析:
"00:00:00:00:00:00:00:01"为openflow交换机与controller交互所产生的DPID.
"flow-mod-1"为该流表的名字(索引),后可用此名字(索引)来删除该流表.
"ingress-port":后面的参数为入接口
"actions":后面的参数为出接口
读取流表:
[controller@host ]# curl http://192.168.1.100:8080/wm/core/switch/1/flow/json
[controller@host ]# curl http://192.168.1.100:8080/wm/staticflowentrypusher/list/all/json
删除流表:
1.删除所有流表
[controller@host ]# curl http://192.168.1.208:8080/wm/staticflowentrypusher/clear/
2.删除单条流表
[controller@host ]# curl -X DELETE -d '{"name":"flow-mod-1"}' http://
