network virtualization for dummies

For IT administrators, there are many options to consider when setting network interfaces. It's easy to get started-a physical server with two network interface cards available ). But what should I do now? Based on the Environment size, engineers must also consider the application load, switching capability, virtual LAN VLANs), work traffic, and overall user traffic. In this article, we will discuss how I/O

Why learn a network namespaceName spaceMany containers and virtualization technologies are dependent on the network namespace.Typical representatives of container virtualization technologies such as LXC, Docker. Neutron also uses the Linux network namespace.When virtual swit

Tags: cloud computing network virtual network standardThe most basic technology of network virtualization is layering (overlay and underlay). There are two ways to achieve layering: one is mapping and the other is encapsulation ).The main idea of ing is to replace the message semantics during forwarding, and how to rep

Many new and recommended protocols have emerged for how to optimize the data center Ethernet and support its provision of server virtualization. Some of the protocols aim to achieve network virtualization by creating multiple virtual Ethernet networks that can share the same physical infrastructure. The sharing method is similar to that of multiple virtual machin

Delete the hidden physical Nic and virtual Nic after network virtualization failure in Windows. In Windows, Nic problems may occur when hardware such as the hardware server motherboard and Nic is replaced, the operating system is restored, or network virtualization fails. For example, an undesired Nic exists in the Dev

isolation, that is, firewall for access control and regional division and isolation. More security devices, such as IPS, may also be added. Of course, there are also people who have added network switches for physical isolation. What else? Virtualization may be a solution. A virtual area is added to the entire network, which defines the Office business area, and

　To get a better understanding of vsphere network virtualization solutions, here are some concepts that allow us to better understand virtual networks.First, the network card:Physical network card is called Vmnic, in ESXi, the first physical network card is called Vmnic0, th

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 t

Yunshu Challenges brought by Virtualization • Large L2 Network -Traditional access control based on service VLAN cannot be implemented -Global broadcast storm -Cross-service ARP spoofing attacks Challenges brought by Virtualization • The host machine functions part of the access layer switch -Traditional policies based on IP addresses and vswitch ports are diffic

Network virtualization is the most complex part of virtualization technology and the most difficult to learn. But because the network is a very important resource in virtualization, the hard bones must be chewed down.To give you a visual understanding of the complexity of yo

In the previous article, we talked about the most basic SDN, that is, how do clients with CA addresses access the external network? Is there a concept like "VLAN virtual gateway" in Network virtualization? And how does the specific connection between PA and CA be realized?The network architecture involved in this artic

Macvtap and Vhost-net technology principlesVMS Vhost-net technology enables virtual machine network traffic to bypass the virtualization layer of the user space and must use a virtio semi-virtualized NICMacvtap is the bridge that skips the kernel.Traditional Bridging solutionsVhost-net is optimized for Vritio, Virtio is originally designed to perform front-end and VMM back-end communication with the client

kb. 4. remote Replication of virtual machines-Replication is a feature provided by vSphere 5.1 in many versions (originally part of vCenter Site Recovery Manager 5.0 ), A virtual machine that is running on one local ESXi host can be continuously copied to an ESXi host in another place. It will store the VM in a local cluster or on another platform, create a copy, and this data source will help you quickly restore the virtual machine. Compared with restoring a VM from backup data, restoring thro

Network components include:1,vsphere Standard Switch , responsible for managing the virtual machine traffic. Must be managed separately on each ESXi host.2.vsphere Distributed Switch , which manages the traffic of virtual machines and Vmkernel, is shared and managed by ESXi hosts and clusters in a data center. The distributed switch abbreviation is VDS.3, Port/port group , is a logical object of Vswintch, a virtual switch can contain either a Vmkernel

the above The specific meaning of these two parameters is to create an lpar's blog post with IVM in front of it-enabling network virtualization of AIX systems through the Vios and installing AIX full-length on client partition via Vmlibrary.It is more concerned about how to construct the specific values of this parameter, first of all the network part, the param

-KSM: Kernel same-page merging The kernel process ksmd periodically scans the memory and merges pages with the same content to reduce the usage of physical memory. I/O optimization: 1. Storage 2. Data Exchange excuse between networks to simplify the process There is no need to modify the guest OS for full virtualization alization technology, so there is no special cooperation between the virtualization lay

RedHat announced its cooperation with NEC, a global leader in innovative IT, network and communication products and solutions, to jointly develop the NetworkFunctionsVirtualization and NFV functions, assists in providing the Red Hat Enterprise LinuxOpenStack platform solution with the NFV function of the Telecom grade. With the transformation of the business of communication service providers and the modernization of their infrastructure and services,

. The cloud computing platform needs is the virtualization technology, then in the future hardware and software layer will certainly form a middle layer-a more general, complex, compatible with a variety of hardware platform software platform will be set up to achieve the free building of hardware, high-speed upgrade, adapt to technology trends. Meeting Enterprise needs (a magic weapon in computer science is adding the middle tier!) ）。 Believe that th

Label: State port so the network cannot switch port status multipleVSS uses the inter-chassis nsf/sso as the primary high-availability mechanism between the two enclosures. One Virtual Switch member chassis will be a member of the primary virtual switch, and another member will be in the hot wait state of the control Panel. The data panels for both enclosures are available, so the total traffic forwarding capability is 1440Gbps. When a virtual switch