Learn more about the features of the HP FlexFabric 12500 data center class switch. Learn about the Dell E-series of data center-class switches. Then get more info about the models, features and pricing of the Cisco Nexus 7700 switch series. This product overview focuses on the Cisco Nexus 9500 family of switches, which is designed for enterprises and highly virtualized data centers. Get an overview of the Brocade VDX 8770 data center-class switch series, equipped for highly virtualized environments. This was last updated in June 2020 Next Steps This is known as BUM flooding - broadcast, unknown unicast, and multicast flooding. This capability makes a switch a Layer 2 or data-link layer device in the Open Systems Interconnection ( OSI) communications model. Broadcast and multicast frames are also flooded.
If a frame is forwarded to a MAC address unknown to the switch infrastructure, it is flooded to all ports in the switching domain. Core switches connect either aggregation or edge switches, user or device edge networks to data center networks and enterprise LANs to routers.
Core switches: These network switches form the backbone of the network. Edge switches connect into these and they can send traffic from switch to switch or send it up to core switches. Aggregation, or distribution switches: These switches are placed within an optional middle layer. Devices like computers and access points connect to edge switches. Edge, or access switches: These switches manage traffic either coming into or exiting the network. How a network switch worksĪ network switch can be deployed in the following ways: Switches maintain tables that match each MAC address, to the port which the MAC address is received. In a local area network ( LAN) using Ethernet, a network switch determines where to send each incoming message frame by looking at the physical device address (or MAC address). They carry vast amounts of traffic in telecommunications provider networks.Ī network switch operates on the network layer 2 of the OSI model. They connect the computers that host virtual machines ( VMs) in data centers, as well as the physical servers, and much of the storage infrastructure. They provide the wired connections to desktop computers, wireless access points, industrial machinery and some internet of things ( IoT) devices such as card entry systems. Switches form the vast majority of network devices in modern data networks. Switches can be hardware devices that manage physical networks, as well as software-based virtual devices. 
A network switch connects devices (such as computers, printers, wireless access points) in a network to each other, and allows them to ‘talk’ by exchanging data packets.
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