Knowing the network problems is a step that we need to have the network that we have no problem, and we can find and fix any damage.
not imagine if every time we call a technician network problems, especially if the problem is trivial. If we are able to handle it alone, would be more easily and quickly completed, and mengehmat costs.
The following are examples of cases that often occur in a computer network
A. Damaged or faulty hardware
Damage or hardware error that often occurs is the Network Interface Card (network card), pengkabel and connectors. Damage or failure is often caused by the network connection (relationship) is not well between components and component malfunction due to dead or damaged.
a) Network Interface Card (network card)
Physically, to recognize that the network card has been atkif or off can be seen in the light indicator contained in the card while the computer is on the network and the network card connected by cable network should be the indicator light is lit. If not lit means there are problems or damage to the network card.
In the software to find out that the network card was working or actively can be seen at:
(1) Go to Start> Settings> click Control Panel
(2) Select the icon system, double-click the Device Manager menu select
There it can be seen that the network card is recognized or not. When you have known the computer's network card can work or actively.
b) Wiring and Connectors
The selection of communication media as connecting cables between computers it is a medium that is ideal compared to other media such as RF (radio frequency), IR (Infra Red) or telephone lines because it is cheap, easy and has a fairly high speed data. But errors in the wiring rules, the quality of the cable itself, as well as the layout or the network topology often interfere with the wiring system.
1) For the Use of thin coax cable
problem that often arises is :
Cable Open (open). This condition states that there has been a break in the cable causing the cable network can not deliver data.
Connector loose (not connected). This condition occurs in the connection between the network card with the connector cable.
Short cable. This condition states that there has been a short circuit in the cable network.
Terminating resistor on Connector
Short in wiring with plug connector
Loose the male connector
For the case of numbers 1,3,4 and 5 will result in a network system will run down (communication between the computer stops). For the case of a loose connector only occurs on the workstation (client) in question are stopped. But when it occurs in the terminating resistor then causes the network goes down too.
2) For Use of thick coaxial cable
For thick coaxial cable types use the same type of thin coax cable because it uses the same type of network topology.
3) To use UTP cabling
For UTP cable, the error that appears relatively small, since the model is relatively small, since the models use a star topology, where the workstation (client) connected in parallel with the spread using a switch or hub. So check this cable damage can be easily identified.
problem that often arises is :
Connector loose (not connected)
Short cable
Wires exposed (open)
To check the wiring exposed (open) and a short cable that can be done by using a multimeter to test the cable headend.
B. Software
Problems often arise in the software can generally be grouped into:
a) Error setting network configuration
Errors common configuration settings on the network card that uses the ISA as a model we must determine:
Address port I / O
Interrupt number
Direct Memory Access Request line
Buffer Memory Address
Unlike the model of the card ISA network card that uses the PCI models do not need to set because it automatically becomes available.
b) Error Protocol used
This often happens on the network card that uses an ISA slot for determination must be done manually. When we use a protocol PCI network card models that rarely happens when we have to install the drivers correctly.
c) IP addressing errors.
Every computer on a network is the identification of a unique address, so that may not exist the same address. IP addresses in the same network is not allowed because it is an identity for each computer in the network for data communication, in case the same address then the second computer can not access the network due to a seizure of the address number.
d) Identify Errors Client and server computers
The determination between a server computer and client computers must be clear to the client server network, in contrast to the peer to peer networks there is no determination of client and server.
e) Error Service Network (file and print sharing)
Service network (file and print sharing) could be due to an inactive file and print sharing that we reach is not active or we do not do file and print sharing.
f) Security System Errors
Inclusion errors when we entered the password in the network so that we can not enter because of an error in the network security (password).
g) Damage to program files, so it needs to be updated.
Program file that causes damage to the operating system can not run or cause network card can not work (inactive).
To be able to make improvements in software errors can be done by resetting the software in accordance with the provisions in the network. Here are some cases that are caused by the operating system networking:
Can not login in the network, can not belong to the network means the client can not access the network as a whole.
Can not find other computers on the network neighborhood lists. If the hardware and software is no problem to do restart the computer to store all the data we have an update to the operating system.
Can not share files or printers. File or printer sharing is open access so that other computers can access or view our data. Can not share files or printers can be due to the data or the printer is not in the sharing. to be able to do the sharing can be done by right click share.
Can not install network adapter. The case is usually caused by sorfware network card that does not match the driver with network card or network card installation is not perfect on the mainboard so that the computer can not recognize the network card. Things to do with checking on the network card is properly inserted or the network card has been installed with the default driver.
Other computers can not be entered into our computer. Other computers that can not be entered into our computer when the computer we can go to another computer because we have not done a data sharing or printer sharing.
These cases can be resolved if no software errors occur when the network card settings. Setting the network card is very important for the relationship between computers, when an error occurs it causes the computer can not connect to the network.
Error checking must be done one by one carefully in accordance with the conditions set on the network including IP and subnetmask numbering on the protocol used, Workgroupnya name and so on.
Summary
Problems arise that often appear on the installation and after the installation of a LAN network computer can be broadly divided into failure or hardware and software errors.
Damage or failure of the hardware on the network system that is common is the recognition errors Network Cards, Cabling and connectors, as well as additional network components such as hub / switch, router, and so on. For pengakbelan and connector cable more often than open (open), short cables and connectors loose.
Errors related to the software section settings and network configuration error on the server computer and the client computer is used, the type of network protocol used and workgroup use.
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