Introduction to Ethernet Switch Port RJ45
Release time:
2023-03-17
Source:
Switches are arranged side by side with multiple RJ45 ports, which can simultaneously transmit data between multiple ports, including one-to-one, one-to-two, and one-to-many. Each port does not affect its transmission rate with each other, and can be considered as a port on an independent physical network segment (but if devices between the same switch are required to be connected, ensure that the gateways belong to the same one). That is, the so-called network devices connected to it independently enjoy the entire bandwidth, and will not be affected by the transmission of other ports under the same switch, with an isolation effect.
When node A sends data to node D, node B can simultaneously send data to node C, and both transmissions enjoy the full bandwidth of the network, with their own virtual connections. If a 10Mbps Ethernet switch is used here, the total flow flux of the switch is equal to 2 × 10Mbps=20Mbps, and when using a 10Mbps shared HUB, the total flow flux of a HUB will not exceed 10Mbps. In short, a switch is a network device that can encapsulate and forward data frames based on MAC address recognition. The switch can "learn" the MAC address and store it in the internal address table. By establishing a temporary exchange path between the originator and the target recipient of the data frame, the data frame can directly reach the destination address from the source address.
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