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How Network equipment includes switches Work
2025-11-15 15:54:10

Network equipment includes switches are data link layer machines. Ethernet uses physical addresses (MAC addresses), which are 48 bits long and 6 bytes. Their working principle is as follows: When a broadcast frame is received, it is forwarded to all ports except the receiving port.

Network equipment includes switches

When a unicast frame is received, its destination address is checked against its own MAC address table. If the destination address exists, it is forwarded; otherwise, it is flooded (broadcast).

After broadcasting, if no host's MAC address matches the destination MAC address of the frame, it is discarded; if a host's MAC address matches, it is automatically added to its MAC address table.

industrial-grade switches segment collision domains, with each port forming an independent collision domain. If a port has a large amount of data to send.

In Fiber optic switch, the port first stores the received data waiting to be sent into a register, and then sends it out when it is time to send.