1. What is data exchange?
Broadly speaking, any data forwarding can be called data exchange. The process of using the switch is Ethernet-based data exchange. The network data can be exchanged to reach the designated port.
2. What is a switch?
A switch is a network device based on MAC address identification and capable of encapsulating and forwarding data packets. The switch can learn the MAC address and store it in the internal address table through the originator and target receiver of the frame. A temporary switching path is established between the data frames directly from the source address to the destination address.
3. What is an industrial Ethernet switch?
Industrial Ethernet switches, which are used in industrial control field, are open and widely used due to the adopted network standards. They can adapt to low temperature and high temperature, resist electromagnetic interference, prevent salt spray and have strong earthquake resistance.
4. What is the product classification of industrial Ethernet switches?
Industrial Ethernet switches can be divided into non-management switches and managed switches according to their management. The main difference is the management functions for advanced networks and whether they support redundant backup functions. They can also be divided according to port speed and structure.
5. What is the bandwidth of the switch backplane?
The backplane bandwidth of the switch is the maximum amount of data that can be handled between the switch interface processor or the interface card and the data bus. Backplane bandwidth marks the total data exchange capacity of the switch, in Gbps, also called switching bandwidth. The backplane bandwidth of a typical switch ranges from a few Gbps to hundreds of Gbps. The higher the backplane bandwidth of a switch, the better the ability to process data, but at the same time the design cost will be higher.
6. What is the switch packet forwarding rate?
The packet forwarding rate of the switch marks the size of the switch's ability to forward packets. The unit is generally pps (packages per second), and the packet forwarding rate of general switches ranges from tens of Kpps to several hundred Mpps. Packet forwarding rate refers to how many million packets (Mpps) a switch can forward per second, that is, the number of packets that the switch can forward at the same time. The packet forwarding rate reflects the switching capability of the switch in units of packets.
7. What are the main factors for selecting an industrial Ethernet switch?
a, backplane bandwidth, two/three layer switching throughput.
b. VLAN type and quantity.
c. Number and type of switch ports.
d. Protocols and methods that support network management. The switch is required to provide more convenient and centralized management.
e, Qos, 802.1q priority control, 802.1X, 802.3X support.
f, electromagnetic compatibility, redundant backup support.
g, switch exchange cache and port cache, main memory, forwarding delay and other parameters.
h. Whether to support dual power supply redundancy input, protection level, whether the MAC address table is automatically updated, line speed forwarding, MAC address table size, etc. are all parameters worth considering, and should be investigated according to actual conditions.
PVC Edge Banding
The main function of the edge banding is to seal the cross-section of the board, so as to avoid the damage of the board and the adverse factors (mainly moisture) in the process of use and prevent the formaldehyde inside the board from volatilizing, and at the same time achieve the effect of beautiful decoration.
The product has the following main features: smooth surface, no blistering, no ribbing, moderate gloss, smooth surface and back surface, uniform thickness, uniform width, reasonable hardness, high elasticity, good quality, strong wear resistance, trimmed and sealed The color of the side and the side is close to the surface color, not whitish, good gloss, and the overall color of the finished furniture is coordinated.
PVC furniture edge banding is relatively light, which is relative to metal and plexiglass. The reason for the lightness is not because it is a polymer compound, but because they are organic compounds, which are composed of carbon, hydrogen, oxygen, and chlorine. And other lighter elements.
The material of pvc furniture edge banding is plastic, which is easy to process. Plastic has plasticity, that is, it deforms after heating or pressurizing, and maintains its original shape after the temperature drops or the pressure disappears. It can be processed into edge bands of their respective shapes by extrusion and other methods, such as T-shaped edge bands, H-shaped edge bands, D-shaped edge bands, V-shaped edge bands, I-shapes, and so on.
pvc furniture edge banding is of high quality and low price, and the price of plastic is far less than that of metal.
