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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:// | + | From an independent |
{{ :: | {{ :: | ||
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\\ | \\ | ||
**2. Change your computer' | **2. Change your computer' | ||
- | It's possible that your local ISP's DNS is acting erratically. Change it to some reliable DNS like Google' | + | It's possible that your local ISP's DNS (Domain Name System) |
{{ :: | {{ :: | ||
- | **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: | ||
+ | {{ :: | ||
+ | Send your own results to [email protected]\\ | ||
+ | \\ | ||
+ | **4. Test your site's DNS.**\\ | ||
Diagnostic sites like [[http:// | Diagnostic sites like [[http:// | ||
+ | ---- | ||