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Troubleshooting computer network is among the most important job descriptions of the network administrators, system administrators, network technicians and IT consultants. A computer can have different types of problems, so that it can be infected with viruses and spyware, attacked by hackers, unauthorized users and may face connectivity failure issues due to faulty network equipment or configuration. The following is a list of the main troubleshooting network commands that are based on Windows based operating systems and UNIX etc. appropriate use of these troubleshooting commands can helps a lot to analyze and solve a computer network.
PING
Ping is the most important troubleshooting command and it checks the connection with other computers. For example, the computer’s IP address is 10.10.10.10 and your network servers IP address 10.10.10.1 and provide connectivity to the server by using the Ping command in the following format.
At the DOS command Ping 10.10.10.1 and press enter
If you get a response from the server when the connection is okay and if you get an error message like this “Request time out” this means there is any problem in connecting to the server.
ipconfig
ipconfig is another important command in Windows. It shows the IP address of the computer and also shows the DNS, DHCP, Gateway addresses network and subnet mask.
At the DOS command ipconfig and press Enter to see the IP address of your computer.
At the DOS command inconfig / all and press Enter to see the details.
nslookup
Nslookup is a TCP / IP based command and it checks domain name aliases, DNS records, operating system information by sending query the Internet Domain Name Servers. You can resolve errors with DNS server network phone
HOSTNAME
Hostname command shows you the computer name.
At the DOS command Hostname and press Enter
netstat
netstat utility shows the protocols statistics and current established TCP / IP connections on the computer.
nbtstat
nbtstat helps to resolve NetBIOS name resolutions problems.
ARP
ARP display and change the IP to physical address translation table that is used by ARP system.
Finger
Finger command is used to retrieve information about a user on a network.
Tracert
Tracert command is used to determine the path of the remote system. This tool is also the number of hops and the IP address of each hop. For example, if you want to see how many hops (routers) in the case to reach the path and what is the IP address of each hop then use the following command.
At the command prompt type Tracer www. yahoo.com you will see a list of all the hops and IP addresses.
traceroute
Traceroute is a very useful network debugging command and it is used to locate the server that is slowing down the transmission on the Internet and it also shows the route between the two systems
ROUTE
Route command allows you to do manually in the routing table.
hopefully the above command will help you analyze the problems of the computer network problems.
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