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://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160324-1458779443599076319.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160324-1458779560823058198.jpg "alt=" Image38.png "style=" border:0px; "/>So the virtual switch has two VLANs, VM1 and VM2 belong to VLAN10 and VLAN20 respectively. For a newly created virtual machine, you can control the VLAN to which it belongs by simply placing its virtual NIC in the appropriate Bridge.vlan devices are always in the pare
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
"style=" border:0px;white-space:normal;float:none; "/>Two instance VIF are hung on the same Linux bridge and can communicate with each other.Here's a question for you to think about:
If CIRROS-VM2 launch is schedule to a compute node instead of a control node, does it get DHCP IP?
Answer:
I can't . Because the DHCP agent is running on the control node, CIRROS-VM2 is located on the local network of the compute nodes, and the two
/ Upload-ueditor-image-20160908-1473292244613010407.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160908-1473292592203008125.jpg "style=" border:0px;white-space:normal;float:none; "/>View the network structure of the control node, add the second_local_net corresponding bridge brq161e0b25-58, and the DHCP tap device tapae547b6b-2a.650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-201609
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, "First_local_net" was created through the Web GUI, and we need to figure out what changes have been made to the underlying network structure. Click on the "First_local_net" link to display the subnet and port information for the network.A port has been created in the Ports list named "(a5bd3746-3f89)", IP is 172.16.1.2, attached Device is network:dhcp. Here we just need to know that the port corresponds to the DHCP interface, as to how DHCP works is discussed in detail l
=650; "Src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20161103-1478177737006004603.jpg "/>VXLAN is independent of the underlying network topology, and in turn, the underlying IP network between the two VTEP is independent of VXLAN. The VXLAN packet is routed based on the IP header of the outer layer, which takes the VTEP IP at both ends as the source and destination IP.In the next section we further understand the process of VXLAN encapsulation and forwarding packages through
Core Plugin/agent is responsible for managing key entities: NET, subnet, and port. For more advanced network services, it is managed by service Plugin/agent.Service Plugin and its agents provide richer extension capabilities, including routing, load Balance,firewall, and more:DhcpThe DHCP agent provides DHCP services for instance through DNSMASQ.RoutingThe L3 agent can create router for project (tenant), providing a routing service between Neutron subnet. The routing feature is implemented by de
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