2. Check whether the ip address has been deleted. Operation sequence: put the mouse on My Network Neighborhood, right-click Properties on the stand-alone computer, right-click Properties on LAN connection, click Internet Protocol, and then click Properties to check whether the settings such as ip have been deleted. If there is, change it back.
3. Check whether the network card works normally. Operation sequence: check whether there is a light flashing at the socket where the single machine is connected to the network cable. If there is no explanation, there may be something wrong with your network card.
4. Check whether the line is in normal operation order: unplug the network cable plugged into the computer and try it with other network cables. If the network is unblocked, it can be judged that it is a network cable problem. Generally, it is because the metal head of the network cable is oxidized. Wipe the metal head with a rubber and plug in the network cable. If the problem cannot be solved, please follow the following steps or contact the relevant personnel department.
5. Check whether there is any problem with the switch socket. Operation sequence: If there is a small switch in your office and there is something wrong with the switch socket, just replace the socket. If the network is still unclear, connect your host to the network of other colleagues to see if it is clear. If it is not clear, there may be a problem with the switch socket inside the unit. Please contact the relevant personnel or departments.
6. The network was blocked by virus. Operation sequence: If all the above situations have been investigated, please kill the virus or redo the system.
Only the network in our office can't work. Answer: Only your office in the whole office system has the problem of network failure. Please check 1 in the following order to see if the lines are working properly: replace the bus connected to the switch with other lines, and then connect the stand-alone machine. If a path is formed, wipe the metal head of the original bus with a rubber to see if it can work normally. If not, please contact the relevant personnel or departments. 2. Check whether there is something wrong with your switch. Operation sequence: check with the small switches of other office staff. If it doesn't work, please contact and replace the switch.
3. Check whether there is any problem with the company's internal switch. Operation sequence: all the above problems have been investigated, that is to say, there is no problem with the line and local PBX. It may be a problem with the company's internal switch. Please contact the relevant personnel or departments.
How to check whether there is a problem in the nearby network _ Network troubleshooting process
Content 1. Ordinary stand-alone network is disconnected with 1. Open a command window and enter ping127.0.0.1–t in the DOS interface to check the display status.
2. Enter the IP address of the ping machine in the DOS interface to check the display status.
3. Enter the ping gateway address in the DOS interface and check the display status.
Second, SJ document server (172.18.124.80), automatic rainfall station server and ecological database server (172.18.124.2/kloc)
2. Problems will occur when multiple client softwares access the automatic rainfall station server.
Three, multiple computers at the same time network impassability 1. Multiple computers in the same VLAN (same gateway) have network problems 2. Different VLANs (different gateways) and multiple computers have network problems 4. The single flag county bureau and station network are impassable 1. Telephone consultation on the operation of the other party's network equipment II. Log in to the router of the Union Office remotely (172.5438+08)
3. Check the status of corresponding optical transceiver and corresponding circuit indicator light. 4. Contact the relevant line operation contact person to find the line fault. 5. Multiple counties and bureaus have different networks at the same time. 6. The regional bureau network is blocked. 7. The Internet is blocked. 1. Log on to the 7208 router remotely and check the status of the 100M port.
2. If the port status is closed, please check the connection status.
3. If the port status is open and the line status is closed, please check the connection status of the local optical transceiver to eliminate the connection failure.
None of the above problems have been solved. Contact the mobile company.
Eight, the network is not connected with multiple sites. Nine, mobile multiple sites are not connected. X. Banner county offices, stations and corresponding ports of mobile company's optical transceiver 11. Banner county offices, stations and corresponding ports of Unicom company's optical transceiver 12. Mobile company's optical transceiver normal status indicator 13. Unicom company's optical transceiver normal status indicator 14. Telecom backup optical transceiver line and normal indicator 15. District offices, port addresses and network segments of Qixian bureau's wide area network1kloc-0/. Ordinary stand-alone network can't get through 1. Open a command window and enter ping127.0.0.1–t in the DOS interface to check the display status. If the display status is as shown in the above figure, it means that the local network card is installed and the driver is normal, otherwise, check the network card and the corresponding driver. 2. Enter the IP address of the ping machine in the DOS interface to check the display status. If the display status is as shown above, the local IP address is normal. If it fails to pass the inspection, whether the contact of the crystal head is good, and whether the local IP address and subnet mask are configured correctly to avoid conflicts with other computer addresses.
3. Enter the ping gateway address in the DOS interface and check the display status. 2 If the display status is as shown above, the local gateway address is normal. If it's not checked step by step.
A, check whether the crystal head at the other end of the connecting switch is in good condition; B, check the network cable, line sequence and crystal head with a network cable tester.
C, using ARP killing tools to kill ARP virus.
Secondly, SJ file server (172.18.124.80), automatic rainfall station server and ecological database server (172.18.124.438). 38637.666666666637
A, first check the server network failure (the same as the single computer network troubleshooting method).
b，80。 The server checks file * * * access configuration, user name and password, IIS service software installation, FTP software installation, directory configuration, IP address configuration, connection restriction and connection timeout restriction.
2. Problems will occur when multiple client softwares access the automatic rainfall station server.
A, check the network fault (with a single computer network troubleshooting method).
B. Whether the service software of the central station is running normally.
C whether to add the IP address of the client to the configuration status parameter of the central station.
D. whether the central station database is running normally.
E, FTP conveyor belt running normally.
F, check whether the router port mapping is normal.
Three, more than one computer can't at the same time through the network 1. Multiple computers with the same VLAN (same gateway) have network problems. A. There are network problems with multiple computers connected to the same switch. Check whether there is a problem with the cascade port of the switch or whether there are problems with multiple ports of the switch.
B. Check whether the VLAN gateway is normal and the configuration problems of the three-layer switch and router when the network of multiple computers connected with different switches is blocked.
2. Different VLAN (different gateways) and multiple computers have network problems. A. Check the configuration and operation of Layer 3 switches and routers.
Four, a single county bureau, station network impassability 1. Telephone consultation opposite network equipment operation 2. Log in to the router (172.18.124.100) remotely to check the status of the corresponding local port (taking Aershan as an example).
A. enter telnet172.18.124.100 in the computer DOS command window, as shown in the following figure 3b. If the port status is DOWN, the router port connection is incorrect or there is a problem. Check the connection of the router port and connect it well. If there is a problem with the port, please replace the router port and reconfigure the new connection port.
C. If the port status is open and the line status is, there is something wrong with the line.
3. Check the status of corresponding optical transceiver and corresponding circuit indicator light. 4. Contact the relevant line operation contact person to find the line fault. 5. Multiple counties and bureaus have different networks at the same time. 1. Log on to the router remotely and check the status of the corresponding local port.
2. Check the status of corresponding optical transceiver and corresponding circuit indicator light. 3. Check the status of corresponding optical transceiver and corresponding circuit indicator light. 6. The network of the regional bureau is the same as that of a single county, so I won't go into details. 7. The Internet is inaccessible. 1. Log in to the 7208 router via remote telnet and check the status of the 100M port.
2. If the port status is closed, please check the connection status.
3. If the port status is open and the line status is closed, please check the connection status of the local optical transceiver to eliminate the connection failure.
None of the above problems have been solved. Contact the mobile company.
Eight, the network does not connect multiple sites. A. Log in to the router remotely and check the status of the corresponding local port.
B, check the state c of the corresponding optical transceiver and the corresponding circuit indicator lamp, check the state 9 of the corresponding optical transceiver and the corresponding circuit indicator lamp, move a plurality of sites to be shielded, and remotely log in the router to check the state of the corresponding local port.
B, check the status of corresponding optical transceiver and corresponding circuit indicator light C, check the status of corresponding optical transceiver and corresponding circuit indicator light X, the slogan of mobile company, the corresponding port of flag county bureau, station and optical transceiver, station status indicator light 2: Aershan Green 3: Tuquan Green 5: Zhalai Special Green 6: Internet Green 7: Zhongqi Green 8: Soren Green 4- 11, and the port line port number corresponding to flag county bureau, station and optical transceiver of Unicom. Station status indicator light 1, regional bureau light 3, 12 1, Qianqi Meteorological Bureau light 4, Gaoliban light 5 and sheller light 6. Mobile company optical transceiver normal status indicator light A. Work indicator light (green).
Thirteen, Unicom optical transceiver normal indicator status light A. Power indicator light (green) b. RMA (far-end) indicator light (orange), LOA (near-end) indicator light (red) c. 1, 3, 4, 5, 6 connection indicator light is off.
Fourteen Telecom backup optical transceiver line and normal indicator light A. Power supply (power supply) indicator light b. 1 road indicator light (green) XV. Regional Bureau and Qixian Bureau/Station Regional Bureau Aershan Internet Front Banner Sheller Gaolibansuolun Zalaitetu Banner PortNo. S1/s1/s1/3/0/1S5/0s5/1S5/. kloc-0/92. 168.2.25 192. 168.2.5 192. 168.2.9 192. 168.2.65438.92. 168. 168.5 / kloc-0/92. 168.2 . 2 2 18.202 . 74 . 145 192. 168.2 . 22 192. 168.2 . 30 65438
How to check whether there is a problem in the nearby network _ Common network problem detection methods
Common network problems: network congestion, congestion, unstable connection and intermittent connection are common network problems; Where are the causes of these problems and how to find them? It's a headache! Master the application of the following five commands, and the causes of all network problems will be clear at a glance.
How to check the local IP address and router address? Knowing the IP address of your computer and the address of your router is the basis for finding out the network fault. The following commands are all completed in the system command prompt window. We open the system operation menu, or use the shortcut key ctrl+R to bring up the operation window, and enter cmd to enter the command prompt window: (1) ipconfig enters the command prompt window to view the IP information, and press enter, as shown in the following figure:192.168.0.107 is the IP of this machine. Gateway:192.168.0.1is the management address of the router. What if the network is blocked? (2) ping command ping command is a very practical command, which is used to judge whether the local host can connect to the destination address and equipment, and can infer whether the tcp/ip parameters are set correctly.
If the network is disconnected in this example, first check whether the communication between the computer and the router is normal, and enter the following command at the command prompt: ping192.168.0.1. When the number jumps behind the TIL, it means that there is no problem in the network communication between the computer and the router. If there is a time-out prompt, it means that there is something wrong with the network, which is usually caused by IP address configuration, router, network cable link and other reasons. What is the reason for the large network delay? (3) tracert network node tracking When we find that the Internet response is slow, we don't know which node is responsible, such as router, external line and DNS errors, which all lead to network delay; If we visit Baidu slowly, we can enter tracert in the command prompt window, track the routing nodes that reach the destination network, and find out where the network delay is. As shown in the figure below, you can see that there are three nodes that have problems. (4) netsh winsock reset (reset the network).
QQ can be accessed, but why can't the webpage be browsed? This problem is usually a problem with the network DNS and IP/TCP protocol ports. You can enter netsh winsock reset in the command line window to restore the network to initialization, restart the computer, and solve the problem that the website cannot be opened. (5) nslookup domain name ip mutual query Sometimes we know the IP address of the website but don't know the domain name of the website, or we know the domain name but don't know the IP address. In order to realize the conversion query between IP and domain name, we use nslookup command to complete it.
For example, we need to query the ip address of Sina and enter nslookup. Cn, you will see: