+class testEmulatorNetworking( SimpleTestTopology ):
+
+ def testSDNChainingSingleService(self):
+ """
+ Create a two data centers and interconnect them with additional
+ switches between them.
+ Uses Ryu SDN controller.
+ Connect the Docker hosts to different datacenters and setup the links between.
+ """
+ # create network
+ self.createNet(
+ nswitches=3, ndatacenter=2, nhosts=0, ndockers=0,
+ autolinkswitches=True,
+ controller=RemoteController,
+ enable_learning=False)
+ # setup links
+ self.net.addLink(self.dc[0], self.s[0])
+ self.net.addLink(self.s[2], self.dc[1])
+ # start Mininet network
+ self.startNet()
+
+ # add compute resources
+ vnf1 = self.dc[0].startCompute("vnf1", network=[{'id':'intf1', 'ip':'10.0.10.1/24'}])
+ vnf2 = self.dc[1].startCompute("vnf2", network=[{'id':'intf2', 'ip':'10.0.10.2/24'}])
+ # check number of running nodes
+ self.assertTrue(len(self.getContainernetContainers()) == 2)
+ self.assertTrue(len(self.net.hosts) == 2)
+ self.assertTrue(len(self.net.switches) == 5)
+ # check status
+ # check get status
+ s1 = self.dc[0].containers.get("vnf1").getStatus()
+ self.assertTrue(s1["name"] == "vnf1")
+ self.assertTrue(s1["state"]["Running"])
+ self.assertTrue(s1["network"][0]['intf_name'] == 'intf1')
+ self.assertTrue(s1["network"][0]['ip'] == '10.0.10.1')
+
+ s2 = self.dc[1].containers.get("vnf2").getStatus()
+ self.assertTrue(s2["name"] == "vnf2")
+ self.assertTrue(s2["state"]["Running"])
+ self.assertTrue(s2["network"][0]['intf_name'] == 'intf2')
+ self.assertTrue(s2["network"][0]['ip'] == '10.0.10.2')
+
+ # should be not not yet connected
+ self.assertTrue(self.net.ping([vnf1, vnf2]) > 0.0)
+ # setup links
+ self.net.setChain('vnf1', 'vnf2', 'intf1', 'intf2', bidirectional=True, cmd='add-flow')
+ # check connectivity by using ping
+ self.assertTrue(self.net.ping([vnf1, vnf2]) <= 0.0)
+ # stop Mininet network
+ self.stopNet()
+
+ def testSDNChainingMultiService(self):
+ """
+ Create a two data centers and interconnect them with additional
+ switches between them.
+ Uses Ryu SDN controller.
+ Setup 2 services and setup isolated paths between them
+ Delete only the first service, and check that other one still works
+ """
+ # create network
+ self.createNet(
+ nswitches=3, ndatacenter=2, nhosts=0, ndockers=0,
+ autolinkswitches=True,
+ controller=RemoteController,
+ enable_learning=False)
+ # setup links
+ self.net.addLink(self.dc[0], self.s[0])
+ self.net.addLink(self.s[2], self.dc[1])
+ # start Mininet network
+ self.startNet()
+
+ ## First Service
+ # add compute resources
+ vnf1 = self.dc[0].startCompute("vnf1", network=[{'id': 'intf1', 'ip': '10.0.10.1/24'}])
+ vnf2 = self.dc[1].startCompute("vnf2", network=[{'id': 'intf2', 'ip': '10.0.10.2/24'}])
+ # setup links
+ self.net.setChain('vnf1', 'vnf2', 'intf1', 'intf2', bidirectional=True, cmd='add-flow', cookie=1)
+ # check connectivity by using ping
+ self.assertTrue(self.net.ping([vnf1, vnf2]) <= 0.0)
+
+ ## Second Service
+ # add compute resources
+ vnf11 = self.dc[0].startCompute("vnf11", network=[{'id': 'intf1', 'ip': '10.0.20.1/24'}])
+ vnf22 = self.dc[1].startCompute("vnf22", network=[{'id': 'intf2', 'ip': '10.0.20.2/24'}])
+
+ # check number of running nodes
+ self.assertTrue(len(self.getContainernetContainers()) == 4)
+ self.assertTrue(len(self.net.hosts) == 4)
+ self.assertTrue(len(self.net.switches) == 5)
+
+ # setup links
+ self.net.setChain('vnf11', 'vnf22', 'intf1', 'intf2', bidirectional=True, cmd='add-flow', cookie=2)
+ # check connectivity by using ping
+ self.assertTrue(self.net.ping([vnf11, vnf22]) <= 0.0)
+ # check first service cannot ping second service
+ self.assertTrue(self.net.ping([vnf1, vnf22]) > 0.0)
+ self.assertTrue(self.net.ping([vnf2, vnf11]) > 0.0)
+
+ # delete the first service chain
+ self.net.setChain('vnf1', 'vnf2', 'intf1', 'intf2', bidirectional=True, cmd='del-flows', cookie=1)
+ # check connectivity of first service is down
+ self.assertTrue(self.net.ping([vnf1, vnf2]) > 0.0)
+ #time.sleep(100)
+ # check connectivity of second service is still up
+ self.assertTrue(self.net.ping([vnf11, vnf22]) <= 0.0)
+
+ # stop Mininet network
+ self.stopNet()