Open vSwitch系列之一 Open vSwitch誕生
Open vSwitch系列之二 安裝指定版本ovs
Open vSwitch系列之三 ovs-vsctl命令使用
Open vSwitch系列之四 ovs-ofctl命令使用
Open vSwitch系列之五 網橋特性功能配置
Open vSwitch系列之六 vlan隔離
Open vSwitch系列之七 meter表限速
Open vSwitch系列之八 vxlan隧道
Open vSwitch系列之九 Group表
Open vSwitch系列之十 調用北向接口下發流表
OpenvSwitch系列之十一 ovs-dpdk
postman介紹
在開發中，前端和后端是分開開發的，當后端開發完成之后會測試接口。Postman就是一個后端接口的測試工具，通過postman可以發送GET、POST、DELETE等請求。通過Postman可以調用控制器的北向接口，下發流表到交換機
GET請求
Get請求需要注意兩點，第一請求方法是get，第二是URL
POST請求
POST請求需要注意三點：第一 請求方式是POST，第二URL，第三請求的body體。
Postman下發流表的標准格式
postman下發一條流表需要准備4個部分，分別是：
- 動作
- URL
- 身份認證
- body體
動作：PUT
URL：替換自己控制器的ip和交換機switch_id，還要注意flow_id即url最后一個參數，該參數要和body體中一致。
控制器ip:8181/restconf/config/opendaylight-inventory:nodes/node/你的交換機switch_id/flow-node-inventory:table/0/flow/flow6，
認證信息：Basic Auth， username: admin password:admin
body體：格式為 raw --> Json。body體里的內容就是流表的信息。
body體具體內容：
body體就是一個流表的具體內容，分為三大塊：流表元數據、匹配、動作。
元數據：流表名字，id，優先級等
匹配：流表匹配規則，如經典匹配十二元組
動作：標准動作轉發和丟棄
物理端口匹配
匹配進端口為1，動作是轉發到222端口
ovs-ofctl add-flow br0 in_port=1,action=output:222
控制器ip地址:8181/restconf/config/opendaylight-inventory:nodes/node/交換機switch_id/flow-node-inventory:table/0/flow/demo_14
{
"flow": [
{
"id": "demo_14",
"flow-name": "demo_14",
"table_id": 0,
"match": {
"in-port": "1",
"ethernet-match": {
}
},
"instructions": {
"instruction": [
{
"order": "0",
"apply-actions": {
"action": [
{
"order": "0",
"output-action": {
"output-node-connector": "222"
}
}
]
}
}
]
}
}
]
}
mac地址匹配
匹配源mac地址：78:45:c4:1c:ba:b9，目的mac地址：00:50:56:c0:00:08，動作是丟棄
ovs-ofctl add-flow br0 dl_src=78:45:c4:1c:ba:b9,dl_dst=00:50:56:c0:00:08,aciton=drop
控制器ip地址:8181/restconf/config/opendaylight-inventory:nodes/node/交換機switch_id/flow-node-inventory:table/0/flow/demo_four
{
"flow": [
{
"id": "demo_four",
"flow-name": "demo_four",
"table_id": 0,
"match": {
"ethernet-match": {
"ethernet-source": {
"mask": "ff:ff:ff:ff:ff:ff",
"address": "78:45:c4:1c:ba:b9"
},
"ethernet-destination": {
"mask": "ff:ff:ff:ff:ff:ff",
"address": "00:50:56:c0:00:08"
}
}
},
"instructions": {
"instruction": [
{
"order": "0",
"apply-actions": {
"action": [
{
"order": "0",
"drop-action": {
}
}
]
}
}
]
}
}
]
}
ip地址匹配
匹配源ip地址為30.0.0.1/32，目的ip為30.0.0.2/32的流表，動作是轉發到222端口
ovs-ofctl add-flow br0 ip,nw_src=30.0.0.1/32,nw_dst=30.0.0.2/32,aciton=output:222
控制器ip地址:8181/restconf/config/opendaylight-inventory:nodes/node/交換機switch_id/flow-node-inventory:table/0/flow/demo_14
{
"flow": [
{
"id": "demo_14",
"flow-name": "demo_14",
"table_id": 0,
"match": {
"ethernet-match": {
"ethernet-type": {
"type": "0x0800"
}
},
"ipv4-source": "30.0.0.1/32",
"ipv4-destination": "30.0.0.2/32"
},
"instructions": {
"instruction": [
{
"order": "0",
"apply-actions": {
"action": [
{
"order": "0",
"output-action": {
"output-node-connector": "222"
}
}
]
}
}
]
}
}
]
}
udp端口匹配
匹配 源端口為112，目的端口為2321的UDP數據包，動作是轉發到222端口。
ovs-ofctl add-flow br0 udp,udp_src=112,udp_dst=2321,action=output:222
控制器ip地址:8181/restconf/config/opendaylight-inventory:nodes/node/交換機switch_id/flow-node-inventory:table/0/flow/demo_13
{
"flow": [
{
"id": "demo_13",
"flow-name": "demo_13",
"table_id": 0,
"match": {
"ethernet-match": {
"ethernet-type": {
"type": "0x0800"
}
},
"ip-match": {
"ip-protocol": 17
},
"udp-destination-port": "2321",
"udp-source-port": "112"
},
"instructions": {
"instruction": [
{
"order": "0",
"apply-actions": {
"action": [
{
"order": "0",
"output-action": {
"output-node-connector": "222"
}
}
]
}
}
]
}
}
]
}
tcp端口匹配
匹配源端口是888，目的端口是999的TCP流量，動作是轉發到222端口
ovs-ofctl add-flow br0 tcp,tcp_src=888,tcp_dst=999,action=output:222
控制器ip地址:8181/restconf/config/opendaylight-inventory:nodes/node/交換機switch_id/flow-node-inventory:table/0/flow/demo_14
{
"flow": [
{
"id": "demo_14",
"flow-name": "demo_14",
"table_id": 0,
"match": {
"ethernet-match": {
"ethernet-type": {
"type": "0x0800"
}
},
"ip-match": {
"ip-protocol": 6
},
"tcp-destination-port": "999",
"tcp-source-port": "888"
},
"instructions": {
"instruction": [
{
"order": "0",
"apply-actions": {
"action": [
{
"order": "0",
"output-action": {
"output-node-connector": "222"
}
}
]
}
}
]
}
}
]
}
meter表
meter表，限速為10k，超過限制的流量丟棄。
ovs-ofctl add-meter s1 meter=1,kbps,band=type=drop,rate=10 -O OpenFlow13
控制器ip:8181/restconf/config/opendaylight-inventory:nodes/node/交換機switch_id/meter/1
{
"meter": {
"meter-id": "1",
"meter-name": "guestMeter",
"flags": "meter-kbps",
"meter-band-headers": {
"meter-band-header": {
"band-id": "0",
"meter-band-types": { "flags": "ofpmbt-drop" },
"drop-burst-size": "0",
"drop-rate": "10"
}
}
}
}
匹配進端口為1的流量，經過meter表限速，然后轉發到2端口
ovs-ofctl add-flow s1 priority=200,in_port=1,action=meter:1,output:2 -O OpenFlow13
控制器ip地址:8181/restconf/config/opendaylight-inventory:nodes/node/交換機switch_id/flow-node-inventory:table/0/flow/flow1
{
"flow": {
"id": "flow1",
"table_id": "0",
"priority": "120",
"name":"flow_name"
"match": {
"in-port":"1"
},
"instructions": {
"instruction": [
{
"order": "0",
"meter": { "meter-id": "1" }
},
{
"order": "1",
"apply-actions": {
"action": {
"order": "1",
"output-action": {
"output-node-connector": "2"
}
}
}
}
]
}
}
}