vxlan

Earlier this year, VMware, Microsoft, Red Hat and Intel published a IETF draft on Generic Network virtualization Encapsul ation (Geneve). This draft (first published on Valentine's Day no less) includes authors from the each of the first generation Encapsulati On Protocols-vxlan, NVGRE, and STT. However, beyond the obvious appeal of unification across hypervisor platforms, the salient feature of Geneve is that it WA s designed from the ground up to be

addition, exporting packet headers allows a sFlow analyzer to monitor all types of traffic flowing across the switch; Note the ARP and IPV6 traffic displayed in Sflowtrend in addition to the tcp/udp flows. Visibility into Layer 2 traffic are particularly important in switched environments where protocols such as DHCP/BOOTP, STP , LLDP and ARP need to be closely managed. SFlow also provides visibility into networked storage, including Ethernet SAN technologies (e.g. FCoE or AoE), that Typica Lly

is necessary to the second quarter of the entire L2-L7 layer of the network to carry out a comprehensive. This season will also summarize L2, L3 theoretical knowledge, but not as detailed in the first quarter, you can also combine the first quarter of the study. Therefore, the main contents of this article are: L2 layer: The principle of the switch, why there is the difference between FLAT and VLAN in Vlan;neutron; L3 layer: The technology of implementing static routing on Linux (namespace +

place the scriptchmod +x OVS_LAUNCHMV Ovs_launch/usr/local/binTo install the Pipework tool:git clone https://github.com/jpetazzo/pipeworkcp ~/pipework/pipework/usr/local/bin/Install the latest version of Docker: https://docs.docker.com/installation/ubuntulinux/Pull an Image:Docker pull UbuntuCreate Br0 and BR1 bridges for mounted containers:Brctl addbr br0ip link set dev br0 upip addr add 192.168.2.1/24 dev br0brctl addbr br1ip link set dev br1 upip addr Add 19 2.168.3.1/24 Dev BR1Configure OvS

-openvswitch Make the relevant configuration Vim/etc/neutron/neutron.conf [DEFAULT] verbose = True rpc_backend=rabbit [oslo_messaging_rabbit] rabbit_host= Controller rabbit_userid= OpenStack rabbit_password=openstack auth_strategy=keystone [Keystone_authtoken] Auth_uri = http ://controller:5000 auth_url = http://controller:35357 auth_plugin = password project_domain_id = Default user_domain_id = default project_name = Service username = Neutron password = Neutron The following 4 lines c

); Length = skb->len; Forward to Peer if (DEV_FORWARD_SKB (RCV, SKB)! = net_rx_success) Goto Rx_drop; Netif_f_netns_localNetif_f_netns_local is a feature of a network device that sets up the network device for this feature and does not allow the movement between different networks namespace. This type of device is also called a local device (locally devices).Loopback,vxlan,ppp,bridge are all of this type of equipment. Th

applications. Later, the openflow protocol was further developed and promoted by the ONF organization. It has evolved to the latest version 1.4 after continuous improvement in recent years. OF-config is an openflow protocol released by ONF and a southbound interface protocol for connecting network devices. It provides open interfaces for remote management OF openflow switches, you can use the OF-config protocol to configure and adjust the openflow switch attributes in the network, including con

Network virtualization is now a hot topic, and major manufacturers are scrambling to grab this cake. Technologies involved include virtual Emulation for NICs, I/O pass-through, SR-IOV), virtual access technology for networks VN-Tag/VEPA), covering network switching VXLAN/NVGRE ), and Software Defined network SDN/OpenFlow. For details, refer to the blog "Network virtualization-ongoing network revolution" published by EMC China Research Institute, which

] ~]# etcdctl --endpoints=https://10.0.0.2:2379 --ca-file=/opt/kubernetes/ssl/ca.pem --cert-file=/opt/kubernetes/ssl/etcd.pem --key-file=/opt/kubernetes/ssl/etcd-key.pem get /kubernetes/network/subnets/10.2.49.0-24{"PublicIP":"10.0.0.2","BackendType":"vxlan","BackendData":{"VtepMAC":"a6:16:81:8a:af:71"}}Switch to the V3 interface to get all the keys in the ETCD:export ETCDCTL_API=3# 无ca认证：[[emailprotected] ~]# etcdctl get / --prefix --keys-only#

network security Groups to apply rich policies within and across segments. Route or mirror traffic to third-party virtual appliances for even higher levels of security. Offer greater service availability with software-based Scale-out and scale-up resiliency for both theinfrastructure (host, Software load balancer, gateway, network Controller) and the workloads. Take control of your hybrid workloads, including running them in containers, and move them across servers, racks, and Clou DS utili

local network can be used as a starting point for learning flat, VLANs, Vxlan and more complex network types, reducing the difficulty of Neutron learning.We will enter the flat network at the beginning of the next section.650) this.width=650; "Title=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160822-1471817895244049415.png "src=" http://7xo6kd.com1.z0.glb.clouddn.com/ Upload-ueditor-image-20160911-1473554587929071011.jpg "alt=" Bl

tcpdump output:Visible, on the external network interface qg-b8b32a88-03, is always through the floating IP 10.10.10.3 and the external network communication.vlan101 interface qr-e17162c5-00 tcpdump output:When the data is forwarded to the Tenant network, the address has become CIRROS-VM3 tenant IP 172.16.101.3.Summary:1. Floating IP allows the extranet to directly access the instance in the tenant network. This is achieved by applying the iptalbes NAT rule on the router.2. Floating IP is confi

Configuration information:Use the RGW host with the 2个万 Gigabit network card and do high availability and load balancing with OSPF. Ceph OSD Cluster has 21Node (Gigabit nic + 12 x 4T SATA mechanical HDD)To test the VM configuration:Use 8 4-core 8G VMS within a VPC network built with the Vxlan protocol as Cosbench driver. Perform tests at the same time using 128 cosbench work, file block Size (4m-10m).Test Scenarios and results: R

CentOS 7 kernel upgrade to 3.18 The default CentOS 7 kernel version is 3.10. The upgrade is performed to test the vlan Technology of openvswitch. By default, openvswitch 2.3 allows CentOS 7 default kernel 3.10 support, the following is a comparison between software and kernel versions. Open vSwitch Linux kernel-------------------------1.4.x 2.6.18 to 3.21.5.x 2.6.18 to 3.21.6.x 2.6.18 to 3.21.7.x 2.6.18 to 3.31.8.x 2.6.18 to 3.41.9.x 2.6.18 to 3.81.10.x 2.6.18 to 3.81.11.x 2.6.18 to 3.82.0.x 2.6

. The further impact is the O M. Because a lot of information is extracted to the Virtual Layer of the network, we can manage and configure it more efficiently, and easily implement configuration programmability and consistency. There is no need to worry about complicated iOS configurations for each hardware device. Explains the benefits of network virtualization. 650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131227/192J111R-2.jpg "border =" 0 "alt =" "/> Network vir

through a standard computing platform. This type of service is usually a security service or a 4-7 layer network service, which can be expanded as needed. It can also be flexibly embedded into the data stream to play a role with smaller particles. Cloud Joint There are more and more enterprises that use hybrid clouds or choose to run multiple data centers in different locations. For them, smooth communication and workload flow between multiple clouds are maintained, is extremely important. Only

listening port is 6633. (5) Access : 8080/ui/index.html. view the topology on the floodlight web interface. For example, http: // 155.98.39.126: 8080/ui/index.html . Docker + OpenvSwitch build VxLAN experimental environment http://www.linuxidc.com/Linux/2016-02/128397.htm OpenvSwitch Port Mirror in OpenStack Neutron http://www.linuxidc.com/Linux/2016-01/127506.htm Using OpenVSwitch to build a multi-host Docker network http://www.linuxidc.com/

authentication) VTI (Virtual tunnel Interfaces) OpenVPN (client, server, Site-to-site) GRE, Ipip, IPIP6, IP6IP6 tunnels VXLAN unmanaged L2TPv3 L2tp/ipsec and PPTP remote access VPN DMVPN (experimental) 6. Network Service DHCP Server and Relay Caching DNS Server Web Proxy with some URL filtering support (no HTTPS filtering) Telnet and SSH for remote management IGMP Proxy QoS Support 7.

double layer, container engine Docker as a management tool, as the bottom, simply serve the container; Orchestration platform of the Kubernetes or Mesos, as the upper tier, meets the needs of application orchestration. I also once thought that Docker is bound to go to the upper, Couch side, not allow others snore sleep. However, Docker's move was a surprise, and the strategy was to take Docker to the OS.Since the birth of Libnetwork, Docker seems to have conveyed a message that the power of a t

the spec file.3, Centos7 or Docker 1.11 version of the Docker bound NIC Path is/etc/systemd/system/docker.service.d/docker.conf. The instructions for the system folder are started with the systems. And the inside of the Execstart can look at the official document rules, must be empty to define one.4, the gateway (using IP route view) default gateway for KBR0 defined gateway, here need to remove the replacement gateway, or host and container can not be out of the network.5, Brctl addif Ovsbr0 ad