Troubleshoot an Ailing Network

- Ping = technically it's designed to see if the other machine is reachable.

• Microsoft Windows




• Click the Windows icon [formally known as the Start button.


• Type "cmd" in the search bar. [alternatively you could go Start, Run, type "cmd", and click Enter]


• Type "ping" followed by the IP address or a domain name.




• Apple OSX




• Open up Spotlight.


• Type in "terminal".


• Click on Terminal listed under your Applications in the search results.


• Type "ping" followed by the IP address or a domain name.

- SONAR = Sound Navigation and Ranging. The sound made by SONAR was...yes, "ping".
- Common Router IP Addresses:

• Linksys: 192.168.1.1


• D-Link: 192.168.0.1


• Netgear: 192.168.2.1


• For additional typical IP addresses check http://www.cyberwalker.com/article/720.

- For example, if numeric IP's respond but domain names [i.e. .com, .net, .org, etc] don't, it's a DNS issue.
- Traceroute = shows the route that each packet leaving your personal computer takes on its way to its destination.

• Microsoft Windows




• Click the Windows icon [formally known as the Start button.


• Type "cmd" in the search bar. [alternatively you could go Start, Run, type "cmd", and click Enter]


• Type "tracert" followed by the IP address or domain name and press Enter




• Apple OSX




• Open up Spotlight.


• Type in "terminal".


• Click on Terminal listed under your Applications in the search results.


• Type "traceroute" followed by the IP address or domain name and press Enter

- WHOIS service at http://www.dnsstuff.com/.
- WHOIS downloadable software at http://www.tinyurl.com/2xr3gu.