Service HotlineAnalysis of the difference between optical fiber jumper and network cable!
Date of issue:2020-12-26 20:20:12
In the wiring manufacturing industry, the confrontation between optical fiber jumpers and copper cables has been continuous for more than ten years. At present, with the continuous emergence of new business processes such as cloud computing technology and 5G, the scale of the big data center continues to expand, and its structure and wiring are becoming more and more complicated. The light weight of fiber optic patch cords and the slow reduction of costs, This has led to more and more requirements for fiber optic cables in backbone network equipment. The proportion of fiber optic cables in large and medium-sized large data centers is as high as 70%, which is much higher than that of copper cables. Does this represent copper? Will cables be completely replaced by fiber optic cables? Actually, they are not.
1. Why copper cables will still be an essential part of big data centers?
1, use comparison
Although, due to the promotion of higher bandwidth test requirements in the big data center, the optical fiber line has a large market share in the deployment of the big data center due to the advantages of higher transmission speed and greater network bandwidth, especially the technology Backbone application network; but in fact, copper cables will still be an indispensable part of big data centers, and in the use of unique natural environments such as video and voice transmission and energy supply, copper cables are cables that cannot be replaced by optical fiber cables. line.
2, the distinctive advantages of copper cables
In the comprehensive level wiring within 100 meters, the optical fiber cable is not as good as the copper cable in maintenance, cost, wiring and other aspects. The fiber core in the fiber optic cable is a unique type of glass fiber, which is more sensitive than the copper in the copper cable. In the routing and mid- and late-stage maintenance, the fiber optic cable will be casually lost if you pay more attention to it. Its cost has risen; and from the perspective of the current sales market situation, although the price of optical fiber cable has decreased to a certain extent, it is still higher than the price of copper cable on the whole. Therefore, relative to optical fiber cable, the price of copper cable Line and maintenance are more convenient, fast and low-cost.
In the transmission of video, voice and data signals, wireless network connection, POE power supply system software, and other energy supply applications, optical fiber cables cannot replace copper cables.
First, because copper cables are different from optical fiber cables, the transmission of data information is carried out based on electric sparks, which can be applied to video and voice data signals. Therefore, copper cables can be used for video and voice transmission, but optical fiber cables are not good.
Second, because the glass fiber selected for the optical fiber cable can not develop conductivity, and the copper in the copper cable can develop conductivity, therefore, the copper cable can be used in the development of additional power engineering for data information connection, and then it is widely used For wireless network connection, POE power supply system software, LED-based power supply system, etc.
In addition, the TIA-568.2-D specification has approved the modular design of the power plug termination connection (MPTL) as an option for connecting machinery and equipment. This behavior may promote the improvement of the use of RJ45 copper cables, especially in In the video surveillance system using IP surveillance cameras. In addition, the annex to this standard has also upgraded the 28AWG specification network jumper, and the smaller specification of copper cable may be beneficial to the circulation of gas and the use of indoor space, making it sufficient for the development of high-density applications. .
2. What are the types and applications of copper cables?
What are the common types of copper cables?
Currently, there are many types of copper cables on the market, such as Cat 5e, Cat 6, Cat 6, Cat 7 and Cat 8 network jumpers. Different types of copper cables have different routing applications, as follows:
1, Category 5e network cable
The Cat5e network jumper (Cat5e network cable) was developed by TIA/EIA in 2001. Its attenuation coefficient is small and crosstalk is small. The larger network bandwidth is 100MHz, and the larger transmission speed is 1000Mb/s. , Can be adapted backwards, compared to the five types of network cable, its characteristics have been greatly improved, with a higher attenuation coefficient crosstalk ratio (ACR) and wireless channel noise ratio (SNR), and its smaller time delay error . Category 5 network patch cords are suitable for 100M and Gigabit Ethernet interfaces. They are more common in wireless networks or wiring in rooms. Under normal circumstances, Category 6 network patch cords are relatively long and the transmission distance does not exceed 100 meters, which is ideal It is about 90 meters.
2, Category 6 network cable
The network bandwidth of Cat6 network jumper (ie Cat6 network cable) is 250MHz, and the maximum transmission speed is 10Gb/s. Relative to the Category 5 network jumper, the internal structure of the Category 6 network jumper is better. The cross frame is used inside, and the twist distance of the four-pair Category 5 twisted pair is smaller, which promotes the Category 6 network jumper The characteristics of crosstalk and return loss have been improved, and the transmission characteristics far exceed the category 5 network patch cords, and it is more suitable for applications with transmission speeds exceeding 2GBbps. In addition, under normal circumstances, the six types of network jumpers are relatively long and the transmission distance does not exceed 100 meters.
3, Super Category 6 network cable
Cat6a network jumper (Cat6a network cable) is an improved version of Category 6 network jumper. Its network bandwidth is twice that of Category 6 network jumper. The transmission frequency reaches 500MHz and the maximum transmission speed is 10Gb/s. Because of the high-quality structure of the Super Category 6 network jumper, it is helpful to eliminate alien crosstalk (AXT). Therefore, it can be applied to a distance of up to 120 meters, but the specific application is best within 100 meters. In addition, relative to the Category 6 network jumper, the electrical conductor material of the Super Category 6 network jumper is strong, which is more suitable for the natural environment of industrial production.
4, seven types of network cable
Cat7 network jumper (ie Cat7 network cable) has a transmission frequency of 600MHz. It is suitable for 10Gbps transmission speed within a transmission distance of 100 meters and is suitable for integration into a 10 Gigabit Ethernet interface. Compared with the previous multi-generation network jumpers, the seven types of network jumpers have strong shielding properties, which can reasonably reduce the attenuation coefficient, and are suitable for the connection of network switches, optical fiber distribution frames and other equipment in high-density big data centers. It is worth mentioning that the transmission speed of the seven types of network jumpers can reach 40Gbps at a transmission distance of 50 meters, and even reach 100Gbps at a transmission distance of 15Km. At this stage, because the seven types of network jumpers are not flexible and inconvenient for management methods, it has not been temporarily universalized.
5, eight types of network cable
Category 8 network jumper (ie Cat8 network cable) is the next generation Category 5 twisted pair copper cable specification required by ANSI/TIA-568-C.2-1, which can be applied to a network bandwidth of 2000MHz and a transmission speed of 40Gb /s, but its larger transmission distance is only 30m, so it is generally used to short-circuit network servers, network switches, optical fiber distribution frames and other machinery and equipment in a large data center. Because the eight-category network cable is designed for the application of 25GBASE-T and 40GBASE-T, it is especially suitable for the interconnection of the network switch of the big data center to the network server.
Three, summary
Optical fiber and copper core wire are two common transmission media for big data centers. Both have anti-interference ability and excellent security. What is the difference between optical fiber and copper core wire? The key differences between the two are reflected in the following Four levels:
1, transmission distance
Generally speaking, the transmission distance of copper core wire does not exceed 100m, while the larger transmission distance of optical fiber wire reaches 100km (single-mode fiber), which is far beyond the transmission distance of copper core wire.
2, transmission speed
At this stage, the larger transmission speed of copper core wire reaches 40Gbps (such as eight kinds of network cables, DAC microwave sensor copper cable), and the larger transmission speed of optical fiber cable reaches 100Gbps (such as OM4 fiber jumper), which is much higher than copper core wire .
3, maintenance management method
The actual operations such as the production of the crystal plug of the copper core wire and the connection of the port number of the machine and equipment are very simple, while the actual operations such as cutting and welding of the optical fiber cable and equipment connection have high regulations and the actual operation is more complicated.
4, price cost
Under the condition that the length of optical fiber cable and copper core cable are the same, the price of optical fiber cable is generally slightly cheaper than the price of copper core cable, but the price of optical fiber cable connection equipment (such as optical fiber coupler, etc.) and engineering construction is higher than that of copper core. Therefore, in terms of cost, the price of optical fiber cable is higher than that of copper core cable.
From the comparison above, both optical fiber cables and copper core cables have advantages. Copper cables still occupy key positions in applications such as video and voice transmission, in-room Internet, horizontal cabling, and POE system software, and are not easy to be completely replaced by optical fiber cables. The copper technology is still in the development trend of continuous scientific research at this stage. It is convenient to consider the requirements of a large number of equipment connection in the future, so there is no need to worry about it being replaced in time.
1. Why copper cables will still be an essential part of big data centers?
1, use comparison
Although, due to the promotion of higher bandwidth test requirements in the big data center, the optical fiber line has a large market share in the deployment of the big data center due to the advantages of higher transmission speed and greater network bandwidth, especially the technology Backbone application network; but in fact, copper cables will still be an indispensable part of big data centers, and in the use of unique natural environments such as video and voice transmission and energy supply, copper cables are cables that cannot be replaced by optical fiber cables. line.
2, the distinctive advantages of copper cables
In the comprehensive level wiring within 100 meters, the optical fiber cable is not as good as the copper cable in maintenance, cost, wiring and other aspects. The fiber core in the fiber optic cable is a unique type of glass fiber, which is more sensitive than the copper in the copper cable. In the routing and mid- and late-stage maintenance, the fiber optic cable will be casually lost if you pay more attention to it. Its cost has risen; and from the perspective of the current sales market situation, although the price of optical fiber cable has decreased to a certain extent, it is still higher than the price of copper cable on the whole. Therefore, relative to optical fiber cable, the price of copper cable Line and maintenance are more convenient, fast and low-cost.
In the transmission of video, voice and data signals, wireless network connection, POE power supply system software, and other energy supply applications, optical fiber cables cannot replace copper cables.
First, because copper cables are different from optical fiber cables, the transmission of data information is carried out based on electric sparks, which can be applied to video and voice data signals. Therefore, copper cables can be used for video and voice transmission, but optical fiber cables are not good.
Second, because the glass fiber selected for the optical fiber cable can not develop conductivity, and the copper in the copper cable can develop conductivity, therefore, the copper cable can be used in the development of additional power engineering for data information connection, and then it is widely used For wireless network connection, POE power supply system software, LED-based power supply system, etc.
In addition, the TIA-568.2-D specification has approved the modular design of the power plug termination connection (MPTL) as an option for connecting machinery and equipment. This behavior may promote the improvement of the use of RJ45 copper cables, especially in In the video surveillance system using IP surveillance cameras. In addition, the annex to this standard has also upgraded the 28AWG specification network jumper, and the smaller specification of copper cable may be beneficial to the circulation of gas and the use of indoor space, making it sufficient for the development of high-density applications. .
2. What are the types and applications of copper cables?
What are the common types of copper cables?
Currently, there are many types of copper cables on the market, such as Cat 5e, Cat 6, Cat 6, Cat 7 and Cat 8 network jumpers. Different types of copper cables have different routing applications, as follows:
1, Category 5e network cable
The Cat5e network jumper (Cat5e network cable) was developed by TIA/EIA in 2001. Its attenuation coefficient is small and crosstalk is small. The larger network bandwidth is 100MHz, and the larger transmission speed is 1000Mb/s. , Can be adapted backwards, compared to the five types of network cable, its characteristics have been greatly improved, with a higher attenuation coefficient crosstalk ratio (ACR) and wireless channel noise ratio (SNR), and its smaller time delay error . Category 5 network patch cords are suitable for 100M and Gigabit Ethernet interfaces. They are more common in wireless networks or wiring in rooms. Under normal circumstances, Category 6 network patch cords are relatively long and the transmission distance does not exceed 100 meters, which is ideal It is about 90 meters.
2, Category 6 network cable
The network bandwidth of Cat6 network jumper (ie Cat6 network cable) is 250MHz, and the maximum transmission speed is 10Gb/s. Relative to the Category 5 network jumper, the internal structure of the Category 6 network jumper is better. The cross frame is used inside, and the twist distance of the four-pair Category 5 twisted pair is smaller, which promotes the Category 6 network jumper The characteristics of crosstalk and return loss have been improved, and the transmission characteristics far exceed the category 5 network patch cords, and it is more suitable for applications with transmission speeds exceeding 2GBbps. In addition, under normal circumstances, the six types of network jumpers are relatively long and the transmission distance does not exceed 100 meters.
3, Super Category 6 network cable
Cat6a network jumper (Cat6a network cable) is an improved version of Category 6 network jumper. Its network bandwidth is twice that of Category 6 network jumper. The transmission frequency reaches 500MHz and the maximum transmission speed is 10Gb/s. Because of the high-quality structure of the Super Category 6 network jumper, it is helpful to eliminate alien crosstalk (AXT). Therefore, it can be applied to a distance of up to 120 meters, but the specific application is best within 100 meters. In addition, relative to the Category 6 network jumper, the electrical conductor material of the Super Category 6 network jumper is strong, which is more suitable for the natural environment of industrial production.
4, seven types of network cable
Cat7 network jumper (ie Cat7 network cable) has a transmission frequency of 600MHz. It is suitable for 10Gbps transmission speed within a transmission distance of 100 meters and is suitable for integration into a 10 Gigabit Ethernet interface. Compared with the previous multi-generation network jumpers, the seven types of network jumpers have strong shielding properties, which can reasonably reduce the attenuation coefficient, and are suitable for the connection of network switches, optical fiber distribution frames and other equipment in high-density big data centers. It is worth mentioning that the transmission speed of the seven types of network jumpers can reach 40Gbps at a transmission distance of 50 meters, and even reach 100Gbps at a transmission distance of 15Km. At this stage, because the seven types of network jumpers are not flexible and inconvenient for management methods, it has not been temporarily universalized.
5, eight types of network cable
Category 8 network jumper (ie Cat8 network cable) is the next generation Category 5 twisted pair copper cable specification required by ANSI/TIA-568-C.2-1, which can be applied to a network bandwidth of 2000MHz and a transmission speed of 40Gb /s, but its larger transmission distance is only 30m, so it is generally used to short-circuit network servers, network switches, optical fiber distribution frames and other machinery and equipment in a large data center. Because the eight-category network cable is designed for the application of 25GBASE-T and 40GBASE-T, it is especially suitable for the interconnection of the network switch of the big data center to the network server.
Three, summary
Optical fiber and copper core wire are two common transmission media for big data centers. Both have anti-interference ability and excellent security. What is the difference between optical fiber and copper core wire? The key differences between the two are reflected in the following Four levels:
1, transmission distance
Generally speaking, the transmission distance of copper core wire does not exceed 100m, while the larger transmission distance of optical fiber wire reaches 100km (single-mode fiber), which is far beyond the transmission distance of copper core wire.
2, transmission speed
At this stage, the larger transmission speed of copper core wire reaches 40Gbps (such as eight kinds of network cables, DAC microwave sensor copper cable), and the larger transmission speed of optical fiber cable reaches 100Gbps (such as OM4 fiber jumper), which is much higher than copper core wire .
3, maintenance management method
The actual operations such as the production of the crystal plug of the copper core wire and the connection of the port number of the machine and equipment are very simple, while the actual operations such as cutting and welding of the optical fiber cable and equipment connection have high regulations and the actual operation is more complicated.
4, price cost
Under the condition that the length of optical fiber cable and copper core cable are the same, the price of optical fiber cable is generally slightly cheaper than the price of copper core cable, but the price of optical fiber cable connection equipment (such as optical fiber coupler, etc.) and engineering construction is higher than that of copper core. Therefore, in terms of cost, the price of optical fiber cable is higher than that of copper core cable.
From the comparison above, both optical fiber cables and copper core cables have advantages. Copper cables still occupy key positions in applications such as video and voice transmission, in-room Internet, horizontal cabling, and POE system software, and are not easy to be completely replaced by optical fiber cables. The copper technology is still in the development trend of continuous scientific research at this stage. It is convenient to consider the requirements of a large number of equipment connection in the future, so there is no need to worry about it being replaced in time.
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