vxlan

solution, proposed by a consortium of VMware, Cisco, Redhat, and so on, is the most important solution to solve the problem of VLANs supporting too few virtual networks (4096). Because each tenant in the public cloud has a different vpc,4096 that is obviously not enough. With Vxlan, it can support 16 million virtual networks, and basically public clouds are sufficient.Bridges Bridge : connecting two network devices between peers, but in today's conte

Currently, the main overlay technologies include VXLAN, NVGRE, STT, and spb mac-in-MAC, TRILL, Cisco OTV and LISP. These technologies basically use encapsulation or tunneling to create virtual networks.VXLAN uses MAC-in-UDP encapsulation to overlay a layer-2 network to implement virtual network. Currently, VXLAN is a subset of the IETF standard draft, supporting vendors such as VMware, Cisco, Arista network

"Cloud computing network Zhu Ji Nanxiong"Basic informationLi JunwuPublishing house: Electronic Industry publishing houseisbn:9787121253775Last Date: 2015-2-6Publication date: March 2015Folio: 16 OpenPage: 275Edition: 1-1 "Cloud computing network Zhu Ji Nanxiong"Content Introduction"Cloud computing network Zhu Ji Nanxiong" focuses on the principles of network technology used in cloud computing network virtualization, focusing on the underlying context o

Neutron now supports the creation of different networks to specify different MTU, the scenario is primarily VLAN and Vxlan mixed.Specific configuration1. neutron.confnetwork_device_mtu=1450 # Devices in force: the namespace and NS interfaces of QDHCP and Qrouter network QR,QG and the corresponding Veth T on neutron networking nodes AP Device/usr/lib/python2.7/site-packages/neutron/agent/linux/interface.py If Self.conf.network_device_mtu:ns_dev . LINK.

trunk, which uses a set of exclusive VLAN IDs. The valid VLAN ID range is 1 to 4094.Flat Network: Virtual networks implemented based on physical networks that do not use VLANs. Only one virtual network can be implemented per physical network.Local network: A virtual network that only allows communication within the server and does not know about cross-server communication. Primarily used for single-node testing.GRE Network: A virtual network that uses GRE to encapsulate a network package. A GRE

]rabbit_host = controller.jmilk.comrabbit_userid = openstackrabbit_password = fanguiju In the [DEFAULT] and [keystone_authtoken] section, configure Keystone Authentication Service access: [DEFAULT]auth_strategy = Keystone [Keystone_authtoken]Auth_uri = http://controller.jmilk.com: Auth_url = http://controller.jmilk.com:35357 auth_plugin = password project_domain_id = default user_domain_id = default project_name = service username = Neutron password = fanguiju Note : Note or remo

usually has its own independent IP address space, exchange, or routing implementation. Ipsesc: A point-to-point encrypted communication protocol, typically used in the data channel of the overlay network. VXLAN: This solution, proposed by a consortium of VMware, Cisco, Redhat, and so on, is the most important solution to solve the problem that VLAN supports too few virtual networks (4096). Because each tenant in the public cloud has a different v

need to change the corresponding configuration, which has a huge impact. Therefore, you mustLarge L2 Network TechnologyTo solve this problem. The large L2 network is designed to meet the specific requirement of dynamic migration of virtual machines after Virtualization of servers in the data center. Currently, the layer-2 network technology is complex, suchVxLAN, From HuaweiCSS, iStack, EVN, SVF, CiscoVSS, FEX, H3CIRF. Today we will share with you the implementation principles of

configuration. Neutron has many SDN controllers as ML2 Plugin and ML3 Plugin (Note: ONOS is under Planning) 2. Main Functions of Neutron 1) ML2 Functions ML2 functions include Port, Subnet, Network, Qos, and Security Group. Linux bridge is an implementation of virtual switches, the ML2 layer uses VLAN and VXLAN (the L3 layer is used to expand the channel technology of the ML2 layer) to achieve physical isolation. The ML2 layer is implemented by a vsw

and the last step is changed to 192.168.204.131testing the connectivity of network namespaces between two host hosts　　[[emailprotected]~]#ipnetnsexecB1ping192.168.10.1064bytesfrom192.168.10.10:icmp_seq=1ttl=64time=3.59ms　　[[emailprotected]~]#ipnetnsexecA2ping192.168.10.1　　64bytesfrom192.168.10.1:icmp_seq=1ttl=64time=6.75ms　　 在node4宿主机上pingnode3宿主机上的网络名称空间，在node3宿主机上抓包分析[[emailprotected]~]#tcpdump-nn-ieth110:15:38.768203IP10.10.10.1>10.10.10.2:GREv0,length56:STP802.1d,Config,Flags[none],bridge-i

by Vxlan WayThis test, through Openvswitch's Vxlan network, enables two physical host containers to exchange visits across hosts.2.1 Topology Diagram650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M00/7A/C5/wKiom1a0UMGTMqwEAACeUX6KmvI583.png "title=" 001. PNG "alt=" Wkiom1a0umgtmqweaaceux6kmvi583.png "/>2.2 Configuring OvS(1) The openvswitch portion of the host10 and host11 two hosts is configured h

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 NodeThe ifconfig display has three Bridges Br-ex,br-int and Br-tun on the control node. From a naming perspective, we can roughly guess what they're used for:Br-exBridge connecting to an external (external) networkBr-intIntegrated (integration) bridge, all instance virtu

To support container Cross host communication, Docker provides overlay driver, allowing users to create overlay networks based on Vxlan. Vxlan can encapsulate two-tier data into UDP for transmission, Vxlan provides the same Ethernet two-tier service as the VLAN, but with greater scalability and flexibility. More detailed information about

storage path:Figure 04The above message is a way of teaching us how to view UWA, NETCPA and other messages. The next thing to look at is the 3 vibs for NSX, namely:· Esx-vxlan· Esx-vsip· Esx-dvfilter-switch-securityThese packages represent several important features of NSX, which are based on their presence, and NSX can be implemented as an SDN solution;First, perform the following command to check if the Esx-vxl