Network troubleshooting handbook

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Marketing preferences may be changed at any time. If it works, the problem lies with the router. Use ping and tracert. Try sending a ping to a well-known, large server, such as Google, to see if it can connect with your router. If the pings fail to send, the command prompt will return basic information about the issue.

You can see where along the pathway the error is arising. If the error comes up early along the pathway, the issue is more likely somewhere in your local network. Perform a DNS check. If you perform a DNS check on, for example, google. You can also use nslookup to check your own DNS server. Contact the ISP. You can also look up outage maps and related information on a smartphone to see if others in your area are having the same problem.

Check on virus and malware protection. Review database logs. Review all your database logs to make sure the databases are functioning as expected. If your network is working but your database is full or malfunctioning, it could be causing problems that flow on and affect your network performance. The term troubleshooting refers to the process of identifying problems with a network through a rigorous and repeatable process and then solving those problems using testable methods.

Troubleshooting is more effective than trying things at random until the network functions because it allows you to target individual network components, testing each for function, and encourages you to document your process.

Network troubleshooting is useful for almost anyone, from a computer enthusiast to an aspiring network engineer. Network troubleshooting skills are nice to have in the home so you can avoid inconvenience when your network goes down, but for many businesses, having a professional with network troubleshooting skills on site is essential. While home network outages may just be an annoyance — preventing you from finishing your movie on Netflix or delaying your online chat conversation with a friend — network outages in the workplace can grind many modern businesses, which rely heavily on connectivity, to a halt.

Businesses certainly recognize the importance of maintaining a fully operational network. While emerging technology tends to make the most headlines and have the most potential for growth, these technologies cannot provide value without being connected to the overall IT architecture. This time when a network is unavailable is known as network downtime.

In other words, network downtime means lost profits , which can cost anywhere from hundreds of thousands to millions of dollars an hour. In professional settings, network troubleshooting skills are an absolute necessity in order to get a business back up on its feet as quickly as possible. Connecting two computers does not always require a centrally managed network. Instead, users can set up an ad hoc network between two computers.

The two devices communicate through an ethernet cable or wireless cards. What are the types of NAT?