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Why doesn't my internet work? Lets play the blame game!

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blamegame

Every n minutes...

Check for Internet: Ping a random host from a list. If no response, iterate through the entire list. If no response from any, assign blame.

Blame:

  1. Is the local link active/connected?
  • Remedy: Connect computer to the network
  • Blame: Customer. Bad wiring/configuration
  1. Does the local link route to the default gateway?
  • Remedy: ifdown && ifup, if using DHCP.
  • Blame: Customer. Configuration.
  1. Does the router respond to WebUI requests/ping?
  • Remedy: Reboot router
  • Blame: Router.
  1. Does the router have an external IP?
  • Remedy: Refresh DHCP from ISP
  • Blame: Modem/ISP
  1. Does the modem respond to WebUI requests/ping?
  • Remedy: Reboot modem
  • Blame: Modem
  1. Does the modem have a strong signal with the ISP?
  • Remedy: Reboot Modem; Call ISP and complain.
  • Blame: ISP
  1. Are DNS queries answered?
  • Remedy: Change DNS server
  • Blame: DNS
  1. Do traceroutes complete?
  • Remedy: Call ISP and complain.
  • Blame: ISP/Last traceroute host to respond

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