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Is RJ45 the same as Ethernet?

Views : 120
Author : CETUS INTL
Update time : 2024-08-15 11:21:00
The RJ45 interface is a standardized network interface, while Ethernet is a LAN technology. Both are important components in network communication, but they have obvious differences in definition, function and application.

The RJ45 interface is a physical interface standard used to connect devices in a LAN. Ethernet is a LAN technology responsible for sending and receiving data. Therefore, although they play a role in network communication. In fact, they are two different concepts, so RJ45 is not equal to Ethernet.

Definition of RJ45 interface
People mainly use the full name of Registered Jack 45 to connect computers and other devices in a LAN. Registered Jack 45 consists of a plug and a socket, connected through 8 pins. People favor it for its stability and wide application. ‌
The RJ45 interface follows international standards and supports high-speed data transmission. The RJ45 interface is compatible with a variety of network devices, such as computers, switches, routers, etc.
Its design allows for easy replacement and repair when problems arise, thereby improving the maintainability of the system. ‌
The RJ45 consists of a plug and a socket that connect the wires to ensure they have electrical continuity.
The core of the RJ45 module is the modular jack.
The RJ45 module's wiring connects twisted pairs through a "U"-shaped slot, and a locking spring secures it to devices like panels.

RJ45 interface
Definition of Ethernet
Ethernet is a local area network technology, based on the CSMA/CD model, which is fast, reliable and flexible.
The Ethernet interface sends and receives data frames. It connects to other network devices through physical and MAC layer connection points. ‌
Ethernet supports a variety of transmission media and topologies. With the development of technology, it can support transmission rates up to 400Gbps. ‌

Ethernet is a local area network technology

Several common types of Ethernet interfaces:
SC fiber optic interface
SC fiber optic interface has been used in the 100Base-TX Ethernet era. Many types of fiber optic interfaces exist.
Mainly used in LAN switching environments, the SC fiber optic interface. Some high-performance Ethernet switches and routers offer this interface. It looks strikingly similar to the RJ-45 interface, but the SC interface is flatter.

RJ-45 interface
This interface is the most common network device interface we have, and the professional term is RJ-45 connector. It belongs to the twisted pair Ethernet interface type.
Users can utilize this interface in 10Base-T Ethernet, 100Base-TX Ethernet, and 1000Base-TX Ethernet. The transmission medium is twisted pair, but there are different requirements for the medium depending on the bandwidth.

FDDI interface
FDDI is the highest transmission rate among mature LAN technologies and has the characteristics of a timed token protocol. This interface supports multiple topologies and the transmission medium is optical fiber. The Fiber Distributed Data Interface is a set of protocols developed by the American National Standards Organization for sending digital signals on optical cables.

AUI interface
The AUI interface is specifically used to connect thick coaxial cables. Early network cards had such interfaces connected to hubs and switches to form a network.

BNC interface
BNC is an interface specifically used for connecting to thin coaxial cables. Its most common application is a separate display signal interface.

Console interface
Ethernet switches with network management capabilities have a "Console" port for configuring and managing the switch.
Connecting and configuring the switch through the Console port is a necessary step for configuring and managing the switch.

So, to some extent, there are differences between RJ45 and Ethernet.