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cirros-vm2 in the same way, assigning the IP to 172.16.100.4.650) this.width=650; "Src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20161113-1479026489473056264.jpg "/>The CIRROS-VM2 is schedule to the compute node, the corresponding tap device is TAP457CC048-AA, and connected to bridge brq1762d312-d4.650) this.width=650; "Src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20161113-1479026489603043136.jpg "/>Because th
-1472912641925010744.jpg "style=" border:0px;white-space:normal;float:none; "/>In addition, VIF's MAC address is fa:16:3e:c1:66:a5, and this data is taken from Port "(fa7e090e-a29c)".Ifconfig is performed in Cirros-vm1, and the MAC address confirms that eth0 corresponds to TAPFA7E090E-A2.650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160903-1472912048425081895.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160903-147291264203
TAPFA7E090E-A2 the name tapfa7e090e-a2 corresponds to Port "(fa7e090e-a29c)".The virtual machine instance-00000001 shown in the Virsh list is "Cirros-vm1" and is named differently and should be noted. Check CIRROS-VM1 configuration with Virsh Edit command to confirm that VIF is TAPFA7E090E-A2In addition, VIF's MAC address is fa:16:3e:c1:66:a5, and this data is taken from Port "(fa7e090e-a29c)".Ifconfig is performed in Cirros-vm1, and the MAC address confirms that eth0 corresponds to TAPFA7E090E
example1. Container InfoDocker exec xbox1 IP link showDocker exec xbox1 IP addr ShowDocker exec xbox1 IP route showYou can see that there is an LO port and another network port in our container, and the flannel network only generates one network card2. Host InfoIn the container: 5: [Email protected] Host: 6: [email protected] is a pair of vnet_pair, and the bridge is connected to the Docker0 bridgecan comm
abstracted different driver, but the underlying implementation is definitely a difference.So, let's figure out what's changed in the underlying network.Open the shell terminal of the control node and use Ovs-vsctl Show to view the status of the current open vSwitch.You can see that Neutron automatically created port "Tap7970bdcd-f2" on the Br-int Bridge.It is known from the name that the port corresponds to the DHCP interface of local_net.Like Linux bridge
Although the external network is an existing network, we still need to define the objects of the external network in Neutron so that router knows how to connect the tenant network to the external network.In the previous section we have configured the ML2 for creating the external network, and this section will create the ext_net through the UI.Go to the Admin-Networks menu and click on the "Create Network" button.The Create page is displayed.Provider network Type Select "Flat" Physical network t
before we created the vlan100 and deployed the instance, today we will continue creating a second VLAN network "vlan101". The subnet IP address is 172.16.101.0/24.what has changed in the underlying networkNeutron automatically creates the vlan101 corresponding bridge Brq1d7040b8-01,vlan interface eth1.101, as well as the DHCP tap device tap5b1a2247-32. Eth1.101 and tap5b1a2247-32 are already connected to Brq1d7040b8-01,vlan 101 's two-layer network re
In the previous section we created "Flat_net", which will deploy instance and verify connectivity in this network.Launch the new instance "CIRROS-VM1", select Network Falt_net.The IP assigned to the CIRROS-VM1 is 172.16.1.103.The CIRROS-VM1 is schedule to the control node, the corresponding tap device is TAPC1875C7F-CB, and is already connected to bridge.The structure of the current flat_net is as follows:Continue to launch the instance cirros-vm2 in the same way, assigning the IP to 172.16.1.10
=" border:0px;margin:0px;padding:0 px; "/>Neutron automatically creates a new flat_net corresponding to the bridge BRQF153B42F-C3, as well as the DHCP tap device Tap19a0ed3d-fe. In addition, the TAP19A0ED3D-FE and the physical NIC Eth1 are already connected to bridge.At this point the flat_net structure:650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160915-1473894690094083498.png "src=" http://7xo6kd.com1.z
In the previous section we enable VLAN network in the ML2 configuration, and today we will create vlan100 and discuss the underlying networking changes.Open the menu, Admin, Networks, and click on the "Create Network" button.The Create page is displayed.Provider Network Type Select "VLAN". Physical Network fill in "Default" and must be consistent with Ml2_conf.ini network_vlan_ranges. The segmentation ID, which is the VLAN ID, is set to 100.Click "Create Network" to create a successful vlan100.C
hardware or by using pure software. The more mature VTEP software implementations currently include:
Linux with VXLAN kernel module
Open VSwitch
Let's start by looking at how Linux supports the Vxlan,open vSwitch approach, which is discussed later in this chapter.650) this.width=650; "Src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20161106-1478392973783000572.jpg "/>Implementation method:
Linux Vxlan creates a UDP Socket, which is monitored by defau
provider, such as Radware,vmwareedge, are supported in addition to the default Haproxy,neutron.Restart the neutron service to ensure that the LBaaS is running properly.We will practice the following LBaaS environment.The environment is described as follows: 1. Create a Pool "Web Servers". 2. Two pool member "WEB1" and "WEB2" are all instance running Ubuntu cloud image. 3. The load balancer VIP is associated with the floating IP. 4. The client on the extranet accesses the Web server through the
"alt=" Image740.png "/>The environment is described as follows:1. Create a Pool "Web Servers".2. Two pool member "WEB1" and "WEB2" are all instance running Ubuntu cloud image.3. The load balancer VIP is associated with the floating IP.4. The client on the extranet accesses the Web server through the floating IP.At the beginning of the next section we will implement this LBaaS step-by-step.650) this.width=650; "Src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20161205-1480888431
configure firewall policy on router to provide network security protection.Another safety-related feature is the security Group, which is also implemented through IPtables. The difference between Firewall and Security Group is that:
The Firewall security policy is located in router, which protects all network of a project.
Security Group Safety Policy is located in instance and is protected by a single instance.
Firewall and Security Group will be analyzed in detail later.Load
:15px;line-height:21.75px;text-align:justify;white-space:normal;background-color: #f6f6f6; "title=" "src = "Http://7xo6kd.com1.z0.glb.clouddn.com/upload-ueditor-image-20160304-1457044908340089757.jpg"/>650) this.width=650; "Style=" Background:url ("Http://ipaiban.com/js/ueditor/lang/zh-cn/images/localimage.png") No-repeat center;border:1px solid #ddd; "src=" Http://ipaiban.com/js/ueditor/themes/default/images/spacer.gif "/> after Ubuntu starts, use the following command to confirm that the CPU s
-20161110-1478760595748056384.jpg "/>Visible, vxlan-100 VNI is 100, the corresponding VTEP network interface is eth1.At this point the VXLAN100 structure:650) this.width=650; "Src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20161110-1478760595861020045.jpg "/>In the next section we will deploy instance to vxlan100_net and analyze the connectivity of the network.650) this.width=650; "Src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20161110-1478760596091013180.j
We discussed the theoretical knowledge of VXLAN and completed the relevant configuration in ML2.Today you will create vxlan100_net through the Web UI and observe the changes in the node network structure.Open Menu Admin--Networks, click the "Create Network" buttonThe Create page is displayed.Provider Network Type Select "VXLAN" Segmentation ID is VNI, set to 100Click "Create Network" to create a successful vxlan100.Click on the vxlan100 link, go to the Network Configuration page, there is no sub
.glb.clouddn.com/ Upload-ueditor-image-20170117-1484631963570088105.jpg "/>The IP assigned to the CIRROS-VM3 is 172.16.101.103.650) this.width=650; "Src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170117-1484632053655003094.png "alt=" Image615.png "/>The CIRROS-VM3 is schedule to the compute node and the virtual network card is connected to the Br-int.650) this.width=650; "Src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20170117-1484631963692015111.jpg "/>65
In addition to Overlay,docker, another Driver:macvlan has been developed to support cross-host container networks.The Macvlan itself is the Linxu kernel module, which allows multiple MAC addresses to be configured on the same physical network card, that is, multiple interface, each of which can be configured with its own IP. Macvlan is essentially a network card virtualization technology, it's not surprising that Docker implements a container network with Macvlan.The biggest advantage of Macvlan
network with label "Default", node A may use Eth1, which is configured as:
Physical_interface_mappings = Default:eth1
Node B may use Eth2, which is configured as:
Physical_interface_mappings = Default:eth2
supports multiple flatIf you are creating multiple flat networks, you need to define multiple labels, separate them with commas, and, of course, use multiple physical network cards, as shown here:
[Ml2_type_flat]
Flat_networks = Flat1,flat2
[Linux_
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