When dealing with computer networks, it is inevitable that network cables should be used frequently. In fact, the production of Network cables is very simple, that is, to insert the 4-to-8-Core Cable of twisted pair wires into the crystal head according to certain rules, therefore, the materials required for the production of such
Line sequence of RJ45 plug
568a Standard
Pin sequence media direct connection signal color
1 Tx + (transmission) white green
2 TX-(Transport) Green
3 RX + (receive) White orange
4. Do not use blue
5. Do not use white or blue
6 RX-(receive) Orange
7. Do not use white Brown
8. Do not use brown
568b StandardPin sequence media direct connection signal color1 Tx + (transmission white orange2 TX-(Transport) Orange3 RX + (receive) White-green4. Do not use blue5. Do not use white or blue6 RX-(receiv
During project installation, due to the limited conditions, the Network cables are all made on site. Generally, you do not need to perform an instrument test. You only need to use the indicator lights to preliminarily determine whether the network cables are turned on or off. However, the indicator lights sometimes do not reflect the network cables, some soft fau
If you have external devices accessing the local Web site, the network that is routed through a network cable, not the wireless network card
Ask a question, the local server, with the wireless network card network, the external de
About the computer cable how to do is to engage in the network of the required courses, but also the most basic combat projects. Cable production methods There are many, we are here to create a simple RJ45 universal 8-pin cable production method.
We use the peeling function of the wire clamp to peel off the net wire,
The crossover network cable is used for the connection between the adsl modem and the HUB (not all of which are related to the MODEM design). The connection between the HUB and the HUB does not pass the cascade connection port, and the two computers are directly connected to each other through the NIC. The production method is basically the same as the above, but the online order is not like 568B. It adopts
Enter Mii-tool to see if the network cable is connected to the network card#mii-tool
eth0:negotiated 100basetx-fd, link ok
Sometimes the driver may not support an error with the following errors#mii-tool
Siocgmiiphy on ' eth0 ' failed:operation not supported
No MII interfaces found
You can use Ethtool to view#ethtool eth0
Setti
high-speed optical fiber cables need to be correctly selected as appropriate testing instruments.
Laser and LED
The laser emitting power is very high, and the emitted light is very concentrated. The light emitted by LEDs is usually scattered and the power is low. Compared with LEDs, lasers can send high-speed pulses, which is also the main reason for using lasers in high-speed networks. For Single-Mode Optical Fiber Links, Fabry-Perot laser light sources are usually used. The new VCSEL (Vertica
More attention should be paid to the standardized installation of category 6 network cable demand
At present, although optical fiber has become a buzzword, many related projects are also being implemented. However, due to the technical level, general demand and price factors, it is not possible to form a universal demand product in the market. Currently, copper cables are still the mainstream in
Some people often ask me some questions about the network cable. When I talk with them, I find that the network cable errors are extremely common. The root cause is that the line makers do not understand the principle, so I think it is necessary to write something to talk about.First, let's talk about differential tran
Now, Gigabit Networks are becoming more popular, but the practice of Gigabit Networks is not widely understood by many friends. Hope to help you.
The gigabit 5 category or over 5 category twisted pair wires are in the same form as the 10-Gigabit network cable. They are also divided into two types: pass-through and crossover. The straight-through network
In companies, businesses, homes, schools, as long as there are networks where there are network cables, but sometimes to add a network cable from a long way through a layer of barriers to pull the network cable to the destination,
It took a lot of money.
The company often
Document directory
Cause:
Process:
Conclusion:
Cause:
My colleagues reported that the Local Area Network could not be mounted. After reading the past, they found that the prompt "the network cable is not plugged in". I suspect that it is not plugged in, plug in, restart, and reinstall the NIC Driver.
My colleague reported that the
Category 5. Category 6, Category 6, and category 7 are basically self-styled by manufacturers. Because more than five categories of standards have already been introduced, some manufacturers have produced a type of technical indicator that is better than five categories, and 6 categories of Self-sealing; due to market competition, other manufacturers have produced a network cable that is higher than the "6
As optical fiber transmission technology matures and the price of Optical Fiber becomes lower and lower, traditional coaxial cable transmission is increasingly unable to adapt to the development of optical network today, it has the advantages of low transmission loss, long transmission distance, working bandwidth, and strong anti-interference ability, making it the most ideal carrier for optical
First of all, our most common network cable has 3 kinds
The first is: straight-through cable
The second type is: Crossover cable
The third is: reversing the cable
The first is through the cable, straight line, also known as th
the TCP/IP protocol, it turns out that there is no problem with the connections between the computers in segment 2, and network Segment 1, which is not just a break-through ping between the computers and the production machines, but also a ping between the other computers. The problem must be in net segment 1. The network Segment 2 to the production machine communication has the problem, is because from th
(1) You can replace a possible faulty network cable with a normal network cable that you are using. If the network connection to the XP system is normal after the replacement, the original cable is faulty.
(2) If there is no repl
In the formation of local area network, in accordance with the general wiring of generic specifications, the construction should be used with "rice standard" network cable or on both sides of the crystal head set dedicated "special-shaped number", and in the cabinet to do with "rice mark" or "Number tube" corresponding to the computer identification record Many u
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