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network-diagnostic-tips [2016/07/15 10:31]
serbizadmin 		network-diagnostic-tips [2020/06/13 15:10] (current)
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 ====== Network Diagnostic Tips ====== ====== Network Diagnostic Tips ======
  
-To say that a site is inaccessible is hardly helpful to its administrators. Please help us address the issue head on by using the following tips:+To just say that a site is inaccessible is hardly helpful to its administrators. Please help us address the issue head on by using the following tips:
  
 **1. Run a traceroute from your commandline and from an independent site.**\\ **1. Run a traceroute from your commandline and from an independent site.**\\
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 Please send the whole result to [email protected]\\ Please send the whole result to [email protected]\\
 \\ \\
-From an independent site like [[http://network-tools.com|network-tools.com]], a traceroute result would look like this+From an independent diagnostic site like [[http://network-tools.com|network-tools.com]], a traceroute result would look like this
 {{ ::nwtools_traceroute.png?nolink |}} {{ ::nwtools_traceroute.png?nolink |}}
  
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 \\ \\
 **2. Change your computer's DNS.** \\ **2. Change your computer's DNS.** \\
-It's possible that your local ISP's DNS is acting erratically. Change it to some reliable DNS like Google's (8.8.8.8 or 4.4.4.4) or those (208.67.222.222  or 208.67.220.220) from OpenDNS.+It's possible that your local ISP's DNS (Domain Name System) is acting erratically. Change it to some reliable DNS like Google's (8.8.8.8 or 4.4.4.4) or those (208.67.222.222  or 208.67.220.220) from OpenDNS.
 {{ ::mac_dns.png?nolink&500 |}} {{ ::mac_dns.png?nolink&500 |}}
-**3. Test your site's DNS.**\\+DNS is like the phone book of the Internet. It keeps track of website names like myportal.upou.edu.ph.\\ 
 + 
 +**3. Help trace possible packet loss with MTR.**\\ 
 +Using an admin or root account, run this from the command line\\ 
 +   mtr myportal.upou.edu.ph 
 +That should display something like this: 
 +{{ ::myportal_mtr.png?nolink |}} 
 +Send your own results to [email protected]\\ 
 +\\ 
 +**4. Test your site's DNS.**\\
 Diagnostic sites like [[http://dnscheck.pingdom.com|Pingdom]] can help your administrator figure out the issue. Report if you find anything strange.  Diagnostic sites like [[http://dnscheck.pingdom.com|Pingdom]] can help your administrator figure out the issue. Report if you find anything strange. 
  
  
 +----
  
Last modified: 2020/06/13 15:11