vxlan

In the previous section we discussed the issues that ML2 Plugin solved, and this section will continue to examine the architecture of ML2.ML2 abstracts and models the two-tier network, introducing the type driver and Mechansim driver.These two classes of driver decouple the network type (type) supported by Neutron and the mechanism for accessing these network types (mechanism), which results in a very good elasticity, easy expansion, and flexibility to support a variety of type and mechanism.Typ

-1470954877877020377.png "alt=" Image509.png "style=" border:0px; "/>Type DriverEach network type supported by Neutron has a corresponding ML2 type driver. Type driver is responsible for maintaining the status of the network type, performing validation, creating networks, and so on. The network types supported by ML2 include local, flat, VLAN, Vxlan, and GRE. We'll discuss each type in detail in a later chapter.Mechansim DriverEach network mechanism s

are proposed, such as various overlay networks.Explanations from the wiki: anOverlay NetworkIs aComputer network, which is built on the top of the another network.Nodesin the overlay can is thought of as being connected by virtual or logical links, each of which corresponds to a path,Perhaps through many physical links, in the underlying network. For example,Distributed Systemssuch asPeer-to-peerNetworks andClient-serverapplications is overlay networks because their nodes run on top of theInter

Docker weave Network Weave implements an overlay network between docker hosts. It uses industry-standard vxlan encapsulation and UDP-based transmission, which can also be encrypted. Weave net creates a virtual network that connects multiple docker hosts. Similar to an Ethernet switch, all containers are connected to this network and communicate with each other. Weave net is composed of multiple peers. The weave router runs a user space process on diff

I. Introduction to the EnvironmentSecond, the environment constructionEnvironment construction here will not repeat, please refer to the previous article!http://blog.51cto.com/hostman/2103503Here we start by configuring flannel information into the databaseCreate a file Flannel-config.json, write the following:Cat >> Flannel-config.json {"Network": "10.10.0.0/16","Subnetlen": 24,"Backend": {"Type": "Vxlan"}}EO FNetwork The IP pool that defines the ne

Tags: OpenStack network open source Neutron Virtual SwitchNow, when it comes to virtual switches, it's common to think of using open vswitch as a virtual switch because both individuals and businesses that support open vswitch want an open model to integrate their services into OpenStack. The open Vswitch community has done a lot of work to improve the position of open vswitch as the primary virtual switch. The community expects open vswitch to provide all the best possible switching services wh

650) this.width=650; "Src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20161220-1482241871705028023.jpg "/>In the previous section we enabled open VSwitch, this section will review the current network status and describe the various network devices involved in open VSwitchInitial network statusCheck the current network status.Control Node 650) this.width=650; "Src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20161220-1482241872074061594.jpg "/>The ifconfig displ

virtualization solutions, such as various OVerlay networks. Interpretation from wiki: An overlay network is a computer network, which is built on the top of another network. nodes in the overlay can be thought of as being connected by virtual or logical links, each of which corresponds to a path, perhaps through your physical links, in the underlying network. for example, distributed systems such as peer-to-peer networks and client-server applications are overlay networks because their nodes ru

bandwidth utilization. The second layer of a classic network uses STP, RRPP, PVST, and other ring network protocols to block many network links. The network bandwidth needs to be halved, resulting in a great waste of network resources, with the continuous expansion of the network scale, the convergence speed of these ring network protocols is not satisfactory, but there is no such problem in the layer-3 network. Although the three-tier network configuration is complex, it can be deployed automa

Overlay NetworkOverlay network is a new data format that encapsulates two beginning text over an IP message without altering the existing network infrastructure, through some kind of protocol communication.This will not only take full advantage of the mature IP routing protocol process data distribution, but also in the overlay technology, the use of extended isolated identity bits, can break the VLAN 4000 number limit,Support up to 16M users, and when necessary, can convert broadcast traffic to

information is first written to the file Flannel-config.json, which reads: { "Network": "10.2.0.0/16", "Subnetlen": 24, "Backend": { ' Type ': ' Vxlan ' } } Network defines the IP pool for this network as 10.2.0.0/16. Subnetlen Specifies that each host is assigned a subnet size of 24 bits, that is, 10.2.x.0/24. Backend for Vxlan, that is, between the host through the V