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Troubleshooting the network cable
Cable testing and certification
The important question during installation and troubleshooting a network problem is to know the quality of those cables. Even if the best cables are used, different factors prevent the network from performing at the optimum level. These factors are as follows:
Connectors
Patch channels
Jumpers
-Hubs
Careless installation
Hostile electrical environment
Using four layer model
It is difficult to list down steps to troubleshoot a network problem. The art of troubleshooting depends on the person who is trying to resolve the problem. It depends on the technical knowledge and intuition of that person. The person who has good knowledge about the different entities of the network such as the hardware, software, connections, is considered to be a good troubleshooter.
Understanding Troubleshooting Model
A troubleshooting model can be simplified by breaking It in simple steps even if the problem is very complex. The sequence of steps makes the task of resolving a problem simple and very easy. The following steps must be followed to resolve any network problem:
Establish the symptoms - Try to determine the problem by analyzing the symptoms. Symptoms can be established by observing how the affected system is behaving. If you are troubleshooting over t...
Understanding the Troubleshooting process
A process which requires making instant judgments and acting on them in order to fix the network problem and make network work effectively is known as troubleshooting. It is not possible to list all the problems that may occur in a network and there are no fixed set of steps that are followed to troubleshoot a problem. The troubleshooting process depends on your judgment and technical knowledge.
Different forms of Touchy Tools
Touchy tools are not physical devices, software's or commands that can be used to resolve network problems. In Touchy tools, the administrator identifies the potential problem by interacting with the user. In this method, you need to ask various questions to the user so as to identify the source of problem. There are no fixed set of questions defined, which you must ask. The type and number of questions asked differ from problem to problem. It also depends on...
What are Protocol Analyzers?
Protocol analyzer is a computer software or hardware device. It has the ability to intercept and store entries of all the traffic that is flowing through the network on the disk. The protocol analyzer is also known as sniffer. The sniffer captures each packet that is traveling through the network and decodes and analyzes its content. You can sniff all or parts of the traffic depending on the network structure.
Time- domain reflectometers for troubleshooting network problems
A time-domain reflectometer (TDR) is used to characterize and trace errors in metallic cables like coaxial and twisted pairs cables. Optical Time Domain Reflectometer (OTDR) is an optoelectronic instrument used to study the characteristics of an optical fiber. A fast rise time pulse is transmitted along the conductor by a (time-domain reflectometer) TDR. If the resistance of the conductor is uniform and it is properly terminated...
LAN Tester
LAN Testers are used to verify 10, 100 and 1000 Base-T Networks. It also allows you to test and repair the network. LAN tester consists of two units, the Main unit and the Remote probe. Main unit performs the task of identifying the LAN device type i.e. whether it is a hub, switch or a PC. It also determines the speed of the LAN (10,100, and 1000 Mb/s) and type of communication link (Half duplex or full duplex). Remote probe helps in locating cable locations where a fault is presen...
Cable Testers for troubleshooting electric connections
A Cable Tester is applied to validate the electrical connections. Cable tester comprises of a source of electrical current, a switching matrix which connects the current source, a volt meter and the volt meter to each and every one of the contact points in a electric cable. Besides it may also consist of a microcontroller which automates the testing procedure and displays the result.
How to perform a Loopback Test with Windows HyperTerminal
Network permits transmission of data from one PC to another. The data broadcasted flows via a range of physical appliances and eventually reaches the anticipated destination. The information will not be broadcasted if any appliance on the communication path is not functioning correctly. A variety of troubleshooting devices can be applied to recognize the problem. The user can also trace the basis that initiated the problem and a l...
Software Tools for troubleshooting network problems
You can resolve various network connectivity problems using software tools. These software tools analyze the network and trace any problems present in the network. Software tools make the task of troubleshooting networks easier. Mostly the software tools are available with the operating system such as Windows Network Monitor and HyperTerminal. You just need to configure them according to your requirement.
How to troubleshoot TCP/ IP
The method employed to troubleshoot different TCP/ IP network connectivity problems which depend on the type of network and the problem. User can manually troubleshoot TCP/ IP. The manual troubleshooting uses various diagnostic utilities.
To manually troubleshoot TCP/ IP:
Verify the TCP/ IP configuration using the IPconfig command.
Check whether the computer can connect to other host computers on the TCP/ IP network using the Ping command.
Verif...
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