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network-diagnostic-tips [2016/07/15 10:03] serbizadmin |
network-diagnostic-tips [2016/07/17 12:46] serbizadmin |
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====== Network Diagnostic Tips ====== | ====== Network Diagnostic Tips ====== | ||
- | To say that a site is unaccessible | + | To just say that a site is inaccessible |
**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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tracert myportal.upou.edu.ph | tracert myportal.upou.edu.ph | ||
- | on **Mac** or **Linux**\\ | + | On **Mac** or **Linux**\\ |
traceroute myportal.upou.edu.ph | traceroute myportal.upou.edu.ph | ||
{{ :: | {{ :: | ||
Line 13: | Line 13: | ||
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 |
{{ :: | {{ :: | ||
\\ | \\ | ||
- | In both cases, | + | In both cases, |
\\ | \\ | ||
+ | **2. Change your computer' | ||
+ | It's possible that your local ISP's DNS (Domain Name System) is acting erratically. Change it to some reliable DNS like Google' | ||
+ | {{ :: | ||
+ | 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:// | ||
- | + | ---- | |