The ESXi hosts are connected to different subnets of the physical network. VXLAN overlay networks support unicast, broadcast, and multicast communication modes in the network.
Unicast communication is used to transfer data between two hosts in the network. Remote VTEPs are usually defined statically. Broadcast communication is the mode when one host sends data to all hosts in the network. Multicast communication is another one-to-many communication type.
Data is sent to selected hosts in the network, not to all hosts. A common example of using multicast is online video streaming. In multicast mode, remote VTEPs can be found automatically without the need to manually define all neighbors. Using a standard vSwitch is not recommended. Examples of non-VXLAN hosts are an internet router, a physical server connected to a physical network, etc.
NSX Manager is a virtual appliance used to configure and manage VMware NSX components including controllers, edge services gateways, and logical switches. NSX Manager provides a graphical user interface a web interface for a better user experience. NSX Controller , called a central control plane, is a distributed state management system to control overlay transport tunnels and virtual networks, providing routing and logical switching capabilities.
VXLAN is a network encapsulation protocol that is adopted for virtualization environments where a high number of VMs must be connected to a network. VXLAN network virtualization is the next step after the virtualization of computing resources to deploy a software-defined datacenter. This combination is widely used by cloud service providers, especially in large datacenters. As you recall, VXLAN networks are adopted for use in multi-tenant environments that require network isolation. MSP clients can then back up their data securely without impacting other clients.
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Protocol Data Unit. Examples of protocols. Various APIs, sockets. The Logical switch uses the segment ID pool which is the way VMware presents the VNIs for consumption to logically separate out one logical switch from another. Transport zones define the scope of the virtual networks between clusters. Transport zones tell us which clusters virtual machines can participate in a certain logical network. As we can see below, when looking at the properties of the Transport zone, we see the cluster that is a member of the transport zone allowing it to participate in the logical network.
When we create a logical switch, we can choose which transport zone a logical switch is defined on. We can see form this how we can affect which clusters would be able to participate in various logical networks. There are three modes that can be configured with logical swithces — Unicast, Hybrid, and Multicast. The exception is that the top-of-rack switch handles the VXLAN encapsulation on behalf of the physical server, as opposed to the hypervisor. All switches communicate with each other through a typical routing protocol such as BGP.
One of the drawbacks to building an IP fabric is that it requires more network administration. Each switch needs to be managed separately. Because the Virtual Chassis Fabric behaves like a single, logical switch, you simply create integrated routing and bridging IRB interfaces and all traffic is automatically routed between all networks because each network appears as a directly connected network.
There is no need to design and configure PIM or any other multicast protocols. Understanding MetaFabric Architecture 2. Help us improve your experience.
Let us know what you think. Do you have time for a two-minute survey? Maybe Later. Understanding Network Virtualization with VMware NSX Understanding how physical networks and virtual networks come together to provide an end-to-end solution is critical to running a stable production environment.
Local VM. Local VM, same network. Locally switch traffic.
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