Bitcoin meat grinder
Publish: 2021-05-03 17:06:54
1.
I think it is certain to give up
17 years to participate in a dinner, drink half of the wine. People in the group let me share what bitcoin is. Then a big man said: & lt; It's Nakamoto that invented bitcoin, right? How many bitcoins does he have? The first bitcoin system can only run on its own computer, so it is paid for the previous block, which is estimated to be about one million
big brother also said that this is too little, a total of 21 million. As the founder and chairman of the board, Sun Tzu should have at least 67% of the shares and absolute control, or worse, 51%. Moreover, he will separate every transaction in the future
I don't think the boss is going to stop. Pull the boss to say drink. Who knows, Nakamoto is an idiot. Mom, I think I just told another interesting story. Yes, the maximum amount of a bitcoin is more than 100000. If you think of bitcoin as a company, its market value is more than 2 trillion, ranking among the top ten in the world. If Nakamoto had given himself more marks, he would now be the first rich man in the world. Both Bezos and Bill Gates have to call dad{ RRRRR}
Yes, human beings are selfish. The world is the jungle. There are common genes in human DNA. That makes us feel the same emotions. It's one of the guarantees that we humans can help each other and live to the present
the highest price is 1 million bitcoin, worth 20 billion US dollars. Since the birth of bitcoin in 2009, there has been no bitcoin in Nakamoto's wallet address
every time I think about this, considering the struggle against humanity and ugliness, I think life is worth it. If we calm down, we can win
2. Unknown_Error
3. blockchain is a technology, and bitcoin is the first mature application based on blockchain, so mixing is normal
4. Do you know how much money you have to earn in a lifetime to spend? This article can illustrate the problem from another angle
in this & quot; Money is not everything, but without money, you can't do anything; In today's society, we rack our brains every day to think about how to make money, but how much can we make enough to spend? Let's take the results of a survey of 500 people based on the price in 2016 to find out how much money we need to earn if we want to live a life with quality
I'm not Gao Fu Shuai or Bai Fu Mei. So it can be seen from the figure that a person's life will cost nearly 3.8 million. If you work for 35 years in your life, your annual income will be about 110000. Other consumption includes clothing, hobbies, interpersonal communication and tourism
doctor: if people eat grains, they will inevitably get sick, so they still need to buy a medical insurance
food: food is the most important thing for the people, and the eaters certainly can't imagine that a person can eat more than 600000 yuan in his lifetime...
Housing: This is a big expense, and there must be a house. Congratulations to those who already have a house, you can subtract nearly 1.7 million yuan from the above goal
OK: 596000. If you buy a car at the age of 25 and drive to the age of 55 without changing the car, except for 30 years' insurance, maintenance and fuel, it is recommended that you buy a car with less than 200000 yuan
Learning: personally, I think the most important thing is this. This money is not much compared with other projects, but it is an investment in self appreciation, which can make you use this lever to raise 3.8 million yuan of income. Students who are still studying, study hard, and don't waste their good youth. There are still many challenges in the future
finally, Tucao, according to the above picture, if you are in the two or three tier city, you can really make complaints about 5 million lottery tickets.
in this & quot; Money is not everything, but without money, you can't do anything; In today's society, we rack our brains every day to think about how to make money, but how much can we make enough to spend? Let's take the results of a survey of 500 people based on the price in 2016 to find out how much money we need to earn if we want to live a life with quality
I'm not Gao Fu Shuai or Bai Fu Mei. So it can be seen from the figure that a person's life will cost nearly 3.8 million. If you work for 35 years in your life, your annual income will be about 110000. Other consumption includes clothing, hobbies, interpersonal communication and tourism
doctor: if people eat grains, they will inevitably get sick, so they still need to buy a medical insurance
food: food is the most important thing for the people, and the eaters certainly can't imagine that a person can eat more than 600000 yuan in his lifetime...
Housing: This is a big expense, and there must be a house. Congratulations to those who already have a house, you can subtract nearly 1.7 million yuan from the above goal
OK: 596000. If you buy a car at the age of 25 and drive to the age of 55 without changing the car, except for 30 years' insurance, maintenance and fuel, it is recommended that you buy a car with less than 200000 yuan
Learning: personally, I think the most important thing is this. This money is not much compared with other projects, but it is an investment in self appreciation, which can make you use this lever to raise 3.8 million yuan of income. Students who are still studying, study hard, and don't waste their good youth. There are still many challenges in the future
finally, Tucao, according to the above picture, if you are in the two or three tier city, you can really make complaints about 5 million lottery tickets.
5. BPS (bits per second) bits per second
BPS is the most basic unit of network speed in network transmission, and bit stream is often used in the era of dial-up Internet access. The fastest network speed is only tens of Kbps (1024bps), which often refers to the data stream transmitted in the network, that is to say, the network bit stream. Now, e to the acceleration of network speed, Mbps (1024kbps) is commonly used, and the network transmission is no longer called bit stream, It is called information superhighway
frame composition
in the network, computer communication transmits binary data composed of "0" and "1", which constitutes "frame", and frame is the smallest unit of network transmission. In the actual transmission, the pulse current is transmitted in the copper cable network; In optical fiber network and wireless network, the transmission is light and electromagnetic wave (of course, light is also a kind of electromagnetic wave)
for high-speed pulse current, we artificially use low-level pulse to represent "0" and high-level pulse to represent "1". These virtual "0" or "1" are "bits". In computer network, 8 bits constitute a "byte". Anyone who has studied computer knows that byte is the data storage unit of computer. Most beginners of network technology confuse "bit" with "byte". When it comes to 100Mbps Ethernet, they will think that it is a network that can transmit 100MB data per second. In fact, it is only 25mb (theoretical value)
if the pulse current is regarded as the track, then the frame is the train running on the track. Train has locomotive and tail car, frame also has a starting point, we call it "frame head", and frame also has a terminal point, we call it "frame tail". The part between the head and the tail of the frame is the data of the frame load (equivalent to the carriage between the head and the tail of the train)
frame transmission
in the network, the network device will "bit" into a byte, and then these bytes "encapsulated" into a frame, transmitted on the network. Why encapsulate data into frames? Because the user data is generally large, some of which can reach MB bytes, it is very difficult to send them all at once, so it is necessary to divide the data into many small parts, and then send them out in a certain order
the frame value of Ethernet is always floating in a certain range, the maximum frame value is 1518 bytes, and the minimum frame value is 64 bytes. In practical application, the frame size is automatically determined by the MTU (maximum transmission unit) of the device, that is, the maximum number of bytes that the device can transmit each time
frames are generated when the computer sends data. Specifically, they are generated by the network card installed in the computer. A frame is meaningful only to the device that can recognize it. For the hub, the frame is meaningless, because it is a physical layer device and only knows the pulse current. Many people don't understand the frame, so they can't understand the difference between switch and hub
after reading all the above, maybe you still don't understand. In fact, binary is not something that network administrators need to deal with, but frame is what network administrators really need to pay attention to. Therefore, in the "network monitor" of Windows 2000, "frame" is the monitored object. But how do we actually monitor frames
what happened on the Internet
how the broadcast storm is formed
before using the network monitor, we need to understand how the broadcast storm is formed, and to understand the formation of the broadcast storm, we need to know the transmission mode of the frame, that is, unicast frame, multicast frame and broadcast frame
1. Unicast frame
unicast frame is also called "point-to-point" communication. At this time, the frame is only received and transmitted between the two nodes. The destination MAC address of the frame is the MAC address of the other node. The network equipment (switch and router) forwards the frame according to the destination MAC address in the frame
2. Multicast frame
multicast frame can be understood as a person talking to multiple people (but not everyone present), which can improve the efficiency of the call. Multicast accounts for a small proportion of the network, mainly used in network equipment internal communication, online video conference, online video on demand, etc
3. Broadcast frame
broadcast frame can be understood as a person talking to all the people present. The advantage of this is that the communication efficiency is high, and the information can be transmitted to all at once. In the broadcast frame, the destination MAC address in the frame header is "FF. FF. FF. FF. FF", which represents the MAC address of all host network cards on the network
broadcast frame is indispensable in the network. For example, the process of client automatically obtaining IP address through DHCP is realized through broadcast frame. Moreover, because devices also need to communicate with each other, a certain number of broadcast frames will appear in the network even if no user sends broadcast frames artificially
compared with unicast and multicast, broadcast occupies almost all the bandwidth of the network in the subnet. A large number of broadcast frames cannot appear in the network for a long time, otherwise the so-called "broadcast storm" will appear (the number of broadcast frames per second is more than 1000). Take a meeting as an example. Only one person can speak at the meeting. If everyone speaks at the same time, the meeting will be a mess. The broadcast storm is that the network is occupied by a large number of broadcast packets for a long time, which makes the normal point-to-point communication unable to work normally. The external performance is that the network speed is extremely slow. There are many reasons for broadcast storm. A faulty network card may send broadcast packets on the network for a long time, resulting in broadcast storm
router or layer 3 switch can be used to isolate broadcast storm between different subnets. When the router or layer 3 switch receives the broadcast frame, it will not process it, so that it can not be transmitted to other subnets, so as to achieve the purpose of isolating the broadcast storm. Therefore, in the large and medium-sized LAN composed of hundreds or even thousands of computers, in order to isolate the broadcast storm, it is necessary to divide the subnet.
BPS is the most basic unit of network speed in network transmission, and bit stream is often used in the era of dial-up Internet access. The fastest network speed is only tens of Kbps (1024bps), which often refers to the data stream transmitted in the network, that is to say, the network bit stream. Now, e to the acceleration of network speed, Mbps (1024kbps) is commonly used, and the network transmission is no longer called bit stream, It is called information superhighway
frame composition
in the network, computer communication transmits binary data composed of "0" and "1", which constitutes "frame", and frame is the smallest unit of network transmission. In the actual transmission, the pulse current is transmitted in the copper cable network; In optical fiber network and wireless network, the transmission is light and electromagnetic wave (of course, light is also a kind of electromagnetic wave)
for high-speed pulse current, we artificially use low-level pulse to represent "0" and high-level pulse to represent "1". These virtual "0" or "1" are "bits". In computer network, 8 bits constitute a "byte". Anyone who has studied computer knows that byte is the data storage unit of computer. Most beginners of network technology confuse "bit" with "byte". When it comes to 100Mbps Ethernet, they will think that it is a network that can transmit 100MB data per second. In fact, it is only 25mb (theoretical value)
if the pulse current is regarded as the track, then the frame is the train running on the track. Train has locomotive and tail car, frame also has a starting point, we call it "frame head", and frame also has a terminal point, we call it "frame tail". The part between the head and the tail of the frame is the data of the frame load (equivalent to the carriage between the head and the tail of the train)
frame transmission
in the network, the network device will "bit" into a byte, and then these bytes "encapsulated" into a frame, transmitted on the network. Why encapsulate data into frames? Because the user data is generally large, some of which can reach MB bytes, it is very difficult to send them all at once, so it is necessary to divide the data into many small parts, and then send them out in a certain order
the frame value of Ethernet is always floating in a certain range, the maximum frame value is 1518 bytes, and the minimum frame value is 64 bytes. In practical application, the frame size is automatically determined by the MTU (maximum transmission unit) of the device, that is, the maximum number of bytes that the device can transmit each time
frames are generated when the computer sends data. Specifically, they are generated by the network card installed in the computer. A frame is meaningful only to the device that can recognize it. For the hub, the frame is meaningless, because it is a physical layer device and only knows the pulse current. Many people don't understand the frame, so they can't understand the difference between switch and hub
after reading all the above, maybe you still don't understand. In fact, binary is not something that network administrators need to deal with, but frame is what network administrators really need to pay attention to. Therefore, in the "network monitor" of Windows 2000, "frame" is the monitored object. But how do we actually monitor frames
what happened on the Internet
how the broadcast storm is formed
before using the network monitor, we need to understand how the broadcast storm is formed, and to understand the formation of the broadcast storm, we need to know the transmission mode of the frame, that is, unicast frame, multicast frame and broadcast frame
1. Unicast frame
unicast frame is also called "point-to-point" communication. At this time, the frame is only received and transmitted between the two nodes. The destination MAC address of the frame is the MAC address of the other node. The network equipment (switch and router) forwards the frame according to the destination MAC address in the frame
2. Multicast frame
multicast frame can be understood as a person talking to multiple people (but not everyone present), which can improve the efficiency of the call. Multicast accounts for a small proportion of the network, mainly used in network equipment internal communication, online video conference, online video on demand, etc
3. Broadcast frame
broadcast frame can be understood as a person talking to all the people present. The advantage of this is that the communication efficiency is high, and the information can be transmitted to all at once. In the broadcast frame, the destination MAC address in the frame header is "FF. FF. FF. FF. FF", which represents the MAC address of all host network cards on the network
broadcast frame is indispensable in the network. For example, the process of client automatically obtaining IP address through DHCP is realized through broadcast frame. Moreover, because devices also need to communicate with each other, a certain number of broadcast frames will appear in the network even if no user sends broadcast frames artificially
compared with unicast and multicast, broadcast occupies almost all the bandwidth of the network in the subnet. A large number of broadcast frames cannot appear in the network for a long time, otherwise the so-called "broadcast storm" will appear (the number of broadcast frames per second is more than 1000). Take a meeting as an example. Only one person can speak at the meeting. If everyone speaks at the same time, the meeting will be a mess. The broadcast storm is that the network is occupied by a large number of broadcast packets for a long time, which makes the normal point-to-point communication unable to work normally. The external performance is that the network speed is extremely slow. There are many reasons for broadcast storm. A faulty network card may send broadcast packets on the network for a long time, resulting in broadcast storm
router or layer 3 switch can be used to isolate broadcast storm between different subnets. When the router or layer 3 switch receives the broadcast frame, it will not process it, so that it can not be transmitted to other subnets, so as to achieve the purpose of isolating the broadcast storm. Therefore, in the large and medium-sized LAN composed of hundreds or even thousands of computers, in order to isolate the broadcast storm, it is necessary to divide the subnet.
6. First use Huangshan ie repair expert or super rabbit to repair ie
later, don't use IE browser, just use window of the world browser, and use various quiet modes,
later, you can say that most of the advertisements on your computer don't need you to worry about, this browser is very powerful. Basically, it can clean up all the rogue software and advertising programs<
Huangshan ie repair expert v8.16 - Sky Software Station - Software Sub..
www.skycn.com/soft/14441.html
super rabbit magic settings v7.5 official version
www.skycn.com/soft/2993.html
window of the world browser - Download
any application based on TCP / IP under windows must access the network through Winsock interface, Winsock provides a high-level data transmission programming interface independent of the underlying transport protocol. In Windows system, Winsock interface is used to provide network access service based on TCP / IP protocol for application program. Now that the file is damaged, of course, we can't surf the Internet. But why can we chat with Tencent QQ? We know that the communication on the Internet is based on TCP / IP protocol. TCP / IP protocol is divided into TCP and UDP. QQ uses UDP to communicate, but Winsock damage does not affect the normal transmission of UDP. This is the reason why we can't surf the Internet, but we can chat with QQ
recently, I found that many netizens can't browse the web but can chat with QQ. It's true that too many people have asked. In order to solve your doubts, I will collect some information and discuss with you how to eliminate this fault Pour a cup of tea first) of course, I just want to analyze the common faults with you, and the specific situation needs to be analyzed. You can refer to several situations and take corresponding measures, hoping to bring help to you
1. Browser & quot; Connect & quot; Option setting error
solution: set the Internet type correctly. If you are surfing the Internet through proxy service, please fill in the IP address and port number of the proxy server correctly; If not, please do not check & quot; Through proxy server & quot; This is the option
2. DNS server setting error
solution: if the ISP provider assigned you a fixed IP address, please fill in the IP address provided by ISP and DNS server address correctly; If the ISP provider assigns a dynamic IP address, there is no need to fill in the DNS server address; Another possibility is that the DNS server of the ISP provider has made an error and can't convert the domain name to IP address correctly. At this time, you can type in the IP address of the website in the address bar of the browser to browse the web page
3. Firewall setting error
solution: if the firewall is not set properly, it may block the exchange of information with the Internet, resulting in the failure of browsing the web page. We can modify the firewall settings. What? How? I don't need to say that. Well, let's just say that for those who don't know you, you can directly choose the default level, which is & quot; Middle & quot; That's it< Case 2: ADSL can successfully log in but can't browse the web page.
first, you should Ping ISP's DNS server address to see if you can ping. If you can ping, most of the problems are software problems. If you can't Ping, you should check the hardware device / line connection status and communication protocol (TCP / IP)
if you can ping, You can see the following information:
command: pinga. B.c.d
replyframa. B.c.d: bytes = 32time = 14msttl = 250
replyframa. B.c.d: bytes = 32time = 27msttl = 250
replyframa. B.c.d: bytes = 32time = 20msttl = 250
replyframa. B.c.d: bytes = 32time = 17msttl = 250
if you can't Ping, There will be the following information:
pinging a.b.c.dwith32bytesofdata:
timeout
timeout
timeout
1. Friends with multiple computers can replace them with other computers. The replaced computers do not install any proxy server software or firewall, and only install one network card to directly connect with adslmodem, After the ADSL dialing software is installed correctly. See if you can browse normally. If you can, the fault is caused by the client's computer. If not, you need to check whether the modem and the line are normal
2. Friends with only one computer can stop running all proxy server software, such as Internet connection sharing (ICS) of Wingate, Sygate and windows, and log in directly to see if the fault can be eliminated. If the fault can be eliminated after stopping running proxy server software, it is definitely the problem of proxy service software
3. Check the settings of the browser, especially ie. for example, the most common fault that causes unable to browse the web page is that & quot; is selected in ie; Automatic detection settings;, Remember not to choose this option. If it is ie5x version, you can see this option by clicking Tools Internet Options connection LAN settings. If this option is checked, you must cancel it. After cancellation, the fault can be solved
4. Check the property settings of TCP / IP protocol, especially whether the DNS server settings are correct. In particular, the location of setting DNS is different for different dial-up software. Some settings are set in the properties of connection icon of dial-up network, some in the control panel network, and some in the connection profile property of dial-up software (such as enternet300). These three places must be set correctly
5. Friends who use windows can prepare ADSL dialing software and windows system CD-ROM if they are confirmed to be correct after the above check, then delete the dialing software first, and then delete all TCP / IP protocols in the control panel / network, restart the computer, add TCP / IP protocol again, turn on modem power, and re install the dialing software, If the setting is correct, most of the problems can be solved by re installing the dialing software and TCP / IP
6. Change a browser software, such as Netscape's Netscape browser browsing test
7. If the computer that you directly connect to adslmodem is equipped with two network cards, try to pick up the network card that connects to the local area network first, leaving only the network card that connects to adslmodem. Then see if the fault is removed. If the fault is removed, check the network and system resource configuration. Especially to see if there is any conflict between the network card and other devices (Windows users can check whether the device is normal in the control panel / system / device management)
8. Your network card has bootrom chip boot function, and the network card has PXE boot chip. It can be solved as follows:
① if the network card is integrated on the main board, or the online boot program is written into the BIOS, you can modify the boot order of the system from the BIOS settings, such as setting the hard disk to boot first, or forbidding the network card to boot the system from the BIOS
② if the network card is not integrated, you can unplug the boot chip on the network card or use the network card setting program to disable the bootrom boot function of the network card, or you can shut down the network card. Then when & quot; PressShift-F10Configure......" Press & quot; Shift+F10" After entering the menu, set bootorderom to disable from line 4, and then press F4 to save and exit
case 3: sharing the Internet can't browse the web page
after using the machine of Windows XP system as the proxy server, it is found that other computers in the LAN can't browse the web page, but there is data flow, QQ and other software can also be used, and each machine in the network can also visit each other. The proxy server is a al network card, which is set to & quot; in the network configuration wizard; Other computers in the network access the Internet through their own computers Connect LAN through a network card), and set it to & quot; B connection shared to the network & quot The second one is B network card. The client is set to & quot; Access to the Internet through other computers in the network;, The operating system has windows 98 / 2000 / XP, which is connected by switch. The proxy server connected to the switch has two lights working normally (a, B network card and broadband modem connection), but the light on the client is only occasionally on. When you open a web page, you can see & quot; in the status bar; Opening webpage & quot; But I couldn't see the web page for a long time, and finally & quot; Web page cannot be displayed & quot; It's a good tip
solution: there may be a problem with your network cable connection and DNS settings:
① make a cascade line to connect the a network card directly to the broadband ADSL, and do not move the others
② set the IP addresses of other clients as 192.168.0.2, 192.168.0.3, 192.168.0.4,..., set the subnet mask as 255.255.255.0, set the gateway address of each client as 192.168.0.1, and set DNS as the DNS address of your ISP
at the same time, you can also consider whether there is a conflict between the proxy server and the network card. It is helpful to replace the PCI slot and remove the peripheral devices that are not needed for the time being
the common phenomenon of ADSL disconnection
the web page cannot be opened, the download is interrupted, or the online video and audio stream is interrupted. These are the troubles that many people who use ADSL to access the Internet will encounter. However, when you carefully check the status of adslmodem, you will find that the dial-up login has been successful. So what's the problem
1. The line is unstable
if the residence is too far from the telecommunication office (more than 5 km), you can report to the telecommunication department. Make sure that the line connection is correct (different voice separators have different connection methods. Please connect correctly according to the instructions). At the same time, make sure that the line communication quality is good, and there is no interference, and there is no connection with other equipment that will cause line interference, such as telephone extension, fax machine, etc. And check whether the junction box and crystal head have poor contact and whether they are wound in series with other wires. If possible, it's better to use standard telephone line. It's better if it's Cat3, CAT5 or CAT5. When the telephone lines enter the house, they go separately. First line calls, first line computers. If you want to install telephone extension in your living room, you'd better choose the junction box with good quality. The PC is connected to the twisted pair attached to adslmodem Note: the mobile phone must not be placed next to the adslmodem, because the mobile phone will automatically find the network every few minutes. At this time, the strong electromagnetic interference is enough to cause the adslmodem to cut off the current.)
2. Check your network card, if it's isa network card, it's better to replace it with PCI network card, and choose a high-quality network card, too cheap network card may be the main cause of the problem. 10m or 10m / 100M adaptive network card can be used. In addition, the conflict caused by the al network card is also worthy of attention. At this time, you should pull up the network card connected to the LAN or other computers, and only use the network card connected to ADSL to test the Internet. If the failure returns to normal, check whether there is any conflict between the two network cards
3. The adslmodem or network card settings are wrong
the most common is to set the wrong adslmodem IP address or DNS server. Because for ADSL virtual dial-up users, there is no need to set the IP address, which can be automatically assigned. TCP/
later, don't use IE browser, just use window of the world browser, and use various quiet modes,
later, you can say that most of the advertisements on your computer don't need you to worry about, this browser is very powerful. Basically, it can clean up all the rogue software and advertising programs<
Huangshan ie repair expert v8.16 - Sky Software Station - Software Sub..
www.skycn.com/soft/14441.html
super rabbit magic settings v7.5 official version
www.skycn.com/soft/2993.html
window of the world browser - Download
any application based on TCP / IP under windows must access the network through Winsock interface, Winsock provides a high-level data transmission programming interface independent of the underlying transport protocol. In Windows system, Winsock interface is used to provide network access service based on TCP / IP protocol for application program. Now that the file is damaged, of course, we can't surf the Internet. But why can we chat with Tencent QQ? We know that the communication on the Internet is based on TCP / IP protocol. TCP / IP protocol is divided into TCP and UDP. QQ uses UDP to communicate, but Winsock damage does not affect the normal transmission of UDP. This is the reason why we can't surf the Internet, but we can chat with QQ
recently, I found that many netizens can't browse the web but can chat with QQ. It's true that too many people have asked. In order to solve your doubts, I will collect some information and discuss with you how to eliminate this fault Pour a cup of tea first) of course, I just want to analyze the common faults with you, and the specific situation needs to be analyzed. You can refer to several situations and take corresponding measures, hoping to bring help to you
1. Browser & quot; Connect & quot; Option setting error
solution: set the Internet type correctly. If you are surfing the Internet through proxy service, please fill in the IP address and port number of the proxy server correctly; If not, please do not check & quot; Through proxy server & quot; This is the option
2. DNS server setting error
solution: if the ISP provider assigned you a fixed IP address, please fill in the IP address provided by ISP and DNS server address correctly; If the ISP provider assigns a dynamic IP address, there is no need to fill in the DNS server address; Another possibility is that the DNS server of the ISP provider has made an error and can't convert the domain name to IP address correctly. At this time, you can type in the IP address of the website in the address bar of the browser to browse the web page
3. Firewall setting error
solution: if the firewall is not set properly, it may block the exchange of information with the Internet, resulting in the failure of browsing the web page. We can modify the firewall settings. What? How? I don't need to say that. Well, let's just say that for those who don't know you, you can directly choose the default level, which is & quot; Middle & quot; That's it< Case 2: ADSL can successfully log in but can't browse the web page.
first, you should Ping ISP's DNS server address to see if you can ping. If you can ping, most of the problems are software problems. If you can't Ping, you should check the hardware device / line connection status and communication protocol (TCP / IP)
if you can ping, You can see the following information:
command: pinga. B.c.d
replyframa. B.c.d: bytes = 32time = 14msttl = 250
replyframa. B.c.d: bytes = 32time = 27msttl = 250
replyframa. B.c.d: bytes = 32time = 20msttl = 250
replyframa. B.c.d: bytes = 32time = 17msttl = 250
if you can't Ping, There will be the following information:
pinging a.b.c.dwith32bytesofdata:
timeout
timeout
timeout
1. Friends with multiple computers can replace them with other computers. The replaced computers do not install any proxy server software or firewall, and only install one network card to directly connect with adslmodem, After the ADSL dialing software is installed correctly. See if you can browse normally. If you can, the fault is caused by the client's computer. If not, you need to check whether the modem and the line are normal
2. Friends with only one computer can stop running all proxy server software, such as Internet connection sharing (ICS) of Wingate, Sygate and windows, and log in directly to see if the fault can be eliminated. If the fault can be eliminated after stopping running proxy server software, it is definitely the problem of proxy service software
3. Check the settings of the browser, especially ie. for example, the most common fault that causes unable to browse the web page is that & quot; is selected in ie; Automatic detection settings;, Remember not to choose this option. If it is ie5x version, you can see this option by clicking Tools Internet Options connection LAN settings. If this option is checked, you must cancel it. After cancellation, the fault can be solved
4. Check the property settings of TCP / IP protocol, especially whether the DNS server settings are correct. In particular, the location of setting DNS is different for different dial-up software. Some settings are set in the properties of connection icon of dial-up network, some in the control panel network, and some in the connection profile property of dial-up software (such as enternet300). These three places must be set correctly
5. Friends who use windows can prepare ADSL dialing software and windows system CD-ROM if they are confirmed to be correct after the above check, then delete the dialing software first, and then delete all TCP / IP protocols in the control panel / network, restart the computer, add TCP / IP protocol again, turn on modem power, and re install the dialing software, If the setting is correct, most of the problems can be solved by re installing the dialing software and TCP / IP
6. Change a browser software, such as Netscape's Netscape browser browsing test
7. If the computer that you directly connect to adslmodem is equipped with two network cards, try to pick up the network card that connects to the local area network first, leaving only the network card that connects to adslmodem. Then see if the fault is removed. If the fault is removed, check the network and system resource configuration. Especially to see if there is any conflict between the network card and other devices (Windows users can check whether the device is normal in the control panel / system / device management)
8. Your network card has bootrom chip boot function, and the network card has PXE boot chip. It can be solved as follows:
① if the network card is integrated on the main board, or the online boot program is written into the BIOS, you can modify the boot order of the system from the BIOS settings, such as setting the hard disk to boot first, or forbidding the network card to boot the system from the BIOS
② if the network card is not integrated, you can unplug the boot chip on the network card or use the network card setting program to disable the bootrom boot function of the network card, or you can shut down the network card. Then when & quot; PressShift-F10Configure......" Press & quot; Shift+F10" After entering the menu, set bootorderom to disable from line 4, and then press F4 to save and exit
case 3: sharing the Internet can't browse the web page
after using the machine of Windows XP system as the proxy server, it is found that other computers in the LAN can't browse the web page, but there is data flow, QQ and other software can also be used, and each machine in the network can also visit each other. The proxy server is a al network card, which is set to & quot; in the network configuration wizard; Other computers in the network access the Internet through their own computers Connect LAN through a network card), and set it to & quot; B connection shared to the network & quot The second one is B network card. The client is set to & quot; Access to the Internet through other computers in the network;, The operating system has windows 98 / 2000 / XP, which is connected by switch. The proxy server connected to the switch has two lights working normally (a, B network card and broadband modem connection), but the light on the client is only occasionally on. When you open a web page, you can see & quot; in the status bar; Opening webpage & quot; But I couldn't see the web page for a long time, and finally & quot; Web page cannot be displayed & quot; It's a good tip
solution: there may be a problem with your network cable connection and DNS settings:
① make a cascade line to connect the a network card directly to the broadband ADSL, and do not move the others
② set the IP addresses of other clients as 192.168.0.2, 192.168.0.3, 192.168.0.4,..., set the subnet mask as 255.255.255.0, set the gateway address of each client as 192.168.0.1, and set DNS as the DNS address of your ISP
at the same time, you can also consider whether there is a conflict between the proxy server and the network card. It is helpful to replace the PCI slot and remove the peripheral devices that are not needed for the time being
the common phenomenon of ADSL disconnection
the web page cannot be opened, the download is interrupted, or the online video and audio stream is interrupted. These are the troubles that many people who use ADSL to access the Internet will encounter. However, when you carefully check the status of adslmodem, you will find that the dial-up login has been successful. So what's the problem
1. The line is unstable
if the residence is too far from the telecommunication office (more than 5 km), you can report to the telecommunication department. Make sure that the line connection is correct (different voice separators have different connection methods. Please connect correctly according to the instructions). At the same time, make sure that the line communication quality is good, and there is no interference, and there is no connection with other equipment that will cause line interference, such as telephone extension, fax machine, etc. And check whether the junction box and crystal head have poor contact and whether they are wound in series with other wires. If possible, it's better to use standard telephone line. It's better if it's Cat3, CAT5 or CAT5. When the telephone lines enter the house, they go separately. First line calls, first line computers. If you want to install telephone extension in your living room, you'd better choose the junction box with good quality. The PC is connected to the twisted pair attached to adslmodem Note: the mobile phone must not be placed next to the adslmodem, because the mobile phone will automatically find the network every few minutes. At this time, the strong electromagnetic interference is enough to cause the adslmodem to cut off the current.)
2. Check your network card, if it's isa network card, it's better to replace it with PCI network card, and choose a high-quality network card, too cheap network card may be the main cause of the problem. 10m or 10m / 100M adaptive network card can be used. In addition, the conflict caused by the al network card is also worthy of attention. At this time, you should pull up the network card connected to the LAN or other computers, and only use the network card connected to ADSL to test the Internet. If the failure returns to normal, check whether there is any conflict between the two network cards
3. The adslmodem or network card settings are wrong
the most common is to set the wrong adslmodem IP address or DNS server. Because for ADSL virtual dial-up users, there is no need to set the IP address, which can be automatically assigned. TCP/
7. What your friend said is true. Fuyuan, the East pole, is China's "freshwater fish capital" and the largest freshwater fish proction place. From the end of December to the Spring Festival, it is the largest fishing base and the golden season for winter fishing in Jiahu lake<
Fuyuan, the East pole, is rich in sturgeon, mullet, salmon, carp and other freshwater fish. It is the "hometown of sturgeon" and "hometown of salmon" in China. Just listening to the title, I think it must be true.
Fuyuan, the East pole, is rich in sturgeon, mullet, salmon, carp and other freshwater fish. It is the "hometown of sturgeon" and "hometown of salmon" in China. Just listening to the title, I think it must be true.
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