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Ethernet switch

Ethernet switches are LAN switches that support network tuning and bring the full network capacity to the end device. With this technology, LAN switching is used to divide the network into the smallest LAN segments

for the purpose of load separation, whereby each microsegment is assigned to a station. In principle, Ethernet switches work like multiport bridges on the link layer. The main difference lies in the switches ' ability to learn about the connected stations. An Ethernet switch has a high port density and optimizes the connection of directly connected stations, whereas a bridge optimizes the connection of LAN segments. To enable real-time Ethernet

, each end device is assigned a single LAN segment.

LAN switching using Ethernet switching as an example

LAN switching using Ethernet switching as an example

During transmission, all incoming data packets are only forwarded to the ports to which the respective destination address is connected. The switch therefore switches its own collision-free channel

with the full Ethernet bandwidth between the receiving port and the output port.Ethernet switches are comparable to hubs

interms of their physical structure; unlike hubs, they generally only use a single backplane bus with several 100 Mbit/sdata throughput. They support redundancy circuits, work with address tables, offer default packet forwarding and filtering options. The filtering takes into account type filters for different packet formats for Ethernet, Subnetwork Access Protocol

(SNAP), etc., broadcast filters and mask filters. In addition to the classic Ethernet switches, there are the Smart Ethernet switches, which can be classified between the unmanaged Ethernet switches and the managed Ethernet switches. Furthermore, with the core switches there are extremely powerful switch variants that are characterized by an enormously high data throughput. They are used for Gigabit Ethernet, 10 Gig abit Ethernet and 100 Gigabit Ethernet.

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Englisch: Ethernet switch
Updated at: 31.01.2020
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