In the wireless monitoring system, the choice of the switch is very important, the quality of the switch determines the stability of the wireless monitoring system. If the switch is improperly selected, it is useless even if all other devices use the highest end. The forwarding rate of the switch does not meet the transmission requirements. Image card and packet loss will occur. You may not have this kind of problem when you just installed it. When you use it for a period of time, it will appear. This is a summary of our many years of experience in wireless bridges. Therefore, we must be cautious when choosing a switch. The following Shenzhen Leian Technology Xiaobian to briefly introduce the exchange of several problems:
1. What precautions should be taken in the selection of wires when using switches and POE switches?
A: There are basic requirements for the quality of the network cables: Caterpillar manufacturers meet the higher standards such as Cat5e\Cat6. Any non-standard, copper-clad steel and other inferior wires cannot meet the requirements of network transmission. There will be data loss and power supply. Drops or even no power supply problems. In harsh environments, shielded cables are recommended for contractors.
2. What are the benefits of using redundant power supplies for the switch?
A: Since the switch is a centralized device for signal processing, the stability of the switch determines the stability of the entire system. In addition to the data exchange, the POE network switch also supplies power to each terminal. The power supply is often the weak link of the system stability and uses redundancy. Power technology can greatly improve the stability of the entire system.
The redundant power supply of the device consists of two identical power supplies. The power control chip controls the power supply to perform load balancing. When one power supply fails or the voltage capability is insufficient, the other power supply immediately supplements or takes over the work. Temporarily replacing a damaged power source does not affect the operation of the device.
3. Is it beneficial to have both optical and electrical ports on the network switch? What is the difference with the Combo optical port on the market?
Answer: When only a short-distance electrical port is used, the optical module can be selected and used at a low cost. When long-distance transmission is required, an optical module can be inserted to reduce the overall cost.
The network switch can be connected to both the optical port and the electrical port to provide the network for the local and remote units or two channels at the same time. The typical electrical port provides the local short-distance network, and the optical port is the remote remote monitoring center for data transmission. At the same time, the SFP optical port can also use E\SFP electrical port module to meet two uplink electrical ports.
The switch uses the combo optical port. The relationship between the optical port and the electrical port is that only one interface can be selected for the optical port and the electrical port. When the optical port is used, the electrical port cannot be used. When the electrical port is used to transmit the network, the optical port cannot be used.
4. What happens to the switch when the transmission distance exceeds the upper limit?
A: The average switch transmission distance is within 100 meters. The transmission distance of the UTP switch's electrical port is generally 150 meters/200 meters. If the transmission limit is exceeded, there will be serious packet loss or even network failure. Meet POE power supply requirements.
5. Some switches purchased in the market, for example, 8-port switches, start to drop packets when they pass 6 ports. What are the reasons?
A: Most of the reasons are data packet loss due to lack of buffers for switch chip processing capabilities, insufficient anti-interference, and low environmental compatibility. In addition, low-quality cables and RJ45 interfaces and interfaces on the market may affect the data exchange performance of the switch because of poor quality.
6. What technology can be used to transmit electrical switches to 150 meters?
A: Network switches use line driver and equalization technology to achieve network transmission up to 150 meters, while maintaining bandwidth 100M. How to build a specific wireless monitoring system, how to choose the switch please consult Shenzhen Leian professional and technical personnel, we will tailor a set of complete wireless monitoring system solutions tailored to your actual situation.
1. What precautions should be taken in the selection of wires when using switches and POE switches?
A: There are basic requirements for the quality of the network cables: Caterpillar manufacturers meet the higher standards such as Cat5e\Cat6. Any non-standard, copper-clad steel and other inferior wires cannot meet the requirements of network transmission. There will be data loss and power supply. Drops or even no power supply problems. In harsh environments, shielded cables are recommended for contractors.
2. What are the benefits of using redundant power supplies for the switch?
A: Since the switch is a centralized device for signal processing, the stability of the switch determines the stability of the entire system. In addition to the data exchange, the POE network switch also supplies power to each terminal. The power supply is often the weak link of the system stability and uses redundancy. Power technology can greatly improve the stability of the entire system.
The redundant power supply of the device consists of two identical power supplies. The power control chip controls the power supply to perform load balancing. When one power supply fails or the voltage capability is insufficient, the other power supply immediately supplements or takes over the work. Temporarily replacing a damaged power source does not affect the operation of the device.
3. Is it beneficial to have both optical and electrical ports on the network switch? What is the difference with the Combo optical port on the market?
Answer: When only a short-distance electrical port is used, the optical module can be selected and used at a low cost. When long-distance transmission is required, an optical module can be inserted to reduce the overall cost.
The network switch can be connected to both the optical port and the electrical port to provide the network for the local and remote units or two channels at the same time. The typical electrical port provides the local short-distance network, and the optical port is the remote remote monitoring center for data transmission. At the same time, the SFP optical port can also use E\SFP electrical port module to meet two uplink electrical ports.
The switch uses the combo optical port. The relationship between the optical port and the electrical port is that only one interface can be selected for the optical port and the electrical port. When the optical port is used, the electrical port cannot be used. When the electrical port is used to transmit the network, the optical port cannot be used.
4. What happens to the switch when the transmission distance exceeds the upper limit?
A: The average switch transmission distance is within 100 meters. The transmission distance of the UTP switch's electrical port is generally 150 meters/200 meters. If the transmission limit is exceeded, there will be serious packet loss or even network failure. Meet POE power supply requirements.
5. Some switches purchased in the market, for example, 8-port switches, start to drop packets when they pass 6 ports. What are the reasons?
A: Most of the reasons are data packet loss due to lack of buffers for switch chip processing capabilities, insufficient anti-interference, and low environmental compatibility. In addition, low-quality cables and RJ45 interfaces and interfaces on the market may affect the data exchange performance of the switch because of poor quality.
6. What technology can be used to transmit electrical switches to 150 meters?
A: Network switches use line driver and equalization technology to achieve network transmission up to 150 meters, while maintaining bandwidth 100M. How to build a specific wireless monitoring system, how to choose the switch please consult Shenzhen Leian professional and technical personnel, we will tailor a set of complete wireless monitoring system solutions tailored to your actual situation.
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