network troubleshooting

[belese]

As it's my day job ,
here's a little troubleshooting for network problem.

Note :

• A lot of problem with network come from power supply,
  so first be sure you power supply is enough, and try with nothing plugged on usb port. (and better try another power supply)
• if you use wifi, and use xbmc xbian config,
  be sure you set dhcp mode, or correct static ip values before connecting to your wlan network.
  

troubleshooting

1. Check if pi receive a ip adress (System -> system info):
• pi have an ip adress :
  go to point 2.
• pi has no ip adress :
  Check if you are in DHCP mode (system->xbian>network (take long time now)):
  • yes :
    check your wire (or check if wifi is connected for wlan)
    check your router config
  • No :
    set in dhcp mode or check if your static value are good
    (depend on you router config)
    
2. Check local network
• open a Terminal
  • windows :
    start->all Programs->accessories>Command Prompt.
  • Mac :
    go -> utilities ->terminal
  • Linux :
    
    
• Ping the pi
  
  Terminal

  ping [PI IP adress]
  ex : ping 192.168.1.7
  
  • you can ping the pi
    go to point 3.
  • you can't ping the pi
    there's a problem in your local network
    
3. Check internet connection
• ssh to the pi (howto ssh)
• test dns (in ssh session)
  
  Terminal

  ping 8.8.8.8
  • you can't ping 8.8.8.8
    you have a problem with you internet connection
    check if your modem is connected to internet.
    
• test www connection
  
  Terminal

  ping http://www.google.com
  • you can't ping google :
    it's a DNS problem
    it can occurs sometime if your dns adress is your router adress, try to set static dns.
    (system->xbian->network) and use 8.8.8.8 as primary dns and 7.7.7.7 as secondary (google dns)
  • you can ping google
    your internet connection is working
    if xbmc or addon cannot connect, it could be a problem in your router firewall, or the site you try to reach is offline