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Static IP Inside The DHCP Pool. What Could Go Wrong??? (Everything)

Solveddhcpip-conflictlan78 replies · 1.6K views · started
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  1. Greta Kowalski
    @mutex_nomad

    small office, 172.16.10.0/24 network. since last week a VoIP phone disconnects every few hours, and a nearby PC shows this:

    Network & internet

    Network & internet
Wi-Fi  •  HomeNet_5G
No internet, secured

Connected, but nothing loads. Troubleshoot problems?

    rebooting fixes it temporarily.. 🙏 nobody admits to changing anything. I suspect smth has the same IP, but how do I find out what?

    we don't have a proper network diagram, and the person who set up most of teh deivces left a while ago. i'm teh 'IT person' because i'm good with comptuers. any simple way to find teh duplicate would help.

    6
  2. Milan Dalton
    @mdalton_0

    uhh do you have managed switches where you can look up MAC addresses?

    5 4 helpful
  4. Soren M.
    @sorenm141

    lol same thing happened to me honestly just reset the BIOS and save yourself teh pain good luck man!

    4 1 helpful
  5. Soren M.
    @sorenm141

    @daria.ortiz84 works on paper, not in real life

    4 0 helpful
  6. Daria O.
    @daria.ortiz84

    exact same thing happened to my laptop last month

    0 1 helpful
  10. Ava O.
    @avao275

    same issue here on my desktop. following this thread lmk how it goes

    2 0 helpful
  11. Soren M.
    @sorenm141

    idk man that sounds like bad advice tbh. exact same thing happened to my second monitor setup last month

    1 1 helpful
  12. Rafa Wolfe
    @rafa.wolfe

    told my boss it would take 10 minutes. its been all weekend

    rage

    8 0 helpful
  13. Dev Schmidt
    @devs776

    have u checked ur lan settings? mine were reset after an update

    4 0 helpful
  14. Ava O.
    @avao275

    @avao275 did u ever fix it? ??

    1 0 helpful
  15. Daria O.
    @daria.ortiz84

    Keep a simple IP plan: a documented range for static devices, teh DHCP pool, and reservations for printers, NAS and phones. It sounds boring but it ends these weekly mysteries. good luck man!

    1 0 helpful
  17. Yusuf Torres
    @yusuf.torres

    @sorenm141 nah thats not it, lan has nothing to do with it just my 2 cents

    1 2 helpful
  18. Mila D.
    @mila.dalton
    in reply to @yusuf.torres

    oof if clients get addresses outside your DHCP scope, you have a second DHCP server: often a consumer router someone plugged in, or a device with DHCP enabled by default. on Windows, ipconfig /all shows the DHCP Server address teh client actually used 🤦 then find and unplug it.

    2 0 helpful

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