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My nic keeps losing its IP address

By largecam357
Apr 10, 2009
  1. My nic keeps loosing its IP address

    MOBO is a Jetway J939GT4-SLI-G Nvidia chipset i will fill in with more detail later

    When I try to repair the connection it locks up the WS and forces to reboot weather I try the repair button or ipconfig to get a new ip address.

    If I manually configure one it locks up as well.

    I reload the drivers it will work for less than 12 hrs and then get APIPA.

    Reset DHCP release time to 30 days to see if it would help still no luck

    I have used the drivers from Jetway which doesn’t list the exact mobo I have.

    Used drivers from Nvidia and no luck with those either.

    Can any one help
     
  2. jobeard

    jobeard TS Ambassador Posts: 9,322   +621

    what's your ISP connection (DSL vs Cable) and

    do you have a modem? update the firmware if so.

    oops; grrr; of course you have a modem; do you have a ROUTER?
     
  3. jobeard

    jobeard TS Ambassador Posts: 9,322   +621

    ...see above ...
     
  4. largecam357

    largecam357 TS Rookie Topic Starter

    its a motorola modem to linksys to 24 port dumb switch.

    10 other WS no other network issue.

    linksys fimware was updataed a few months ago no new one avaliable.
     
  5. jobeard

    jobeard TS Ambassador Posts: 9,322   +621

    hmm; I can't see how this would ever work with multiple systems online at the same time.
    A switch does not have the required DHCP service to get a unique IP address for every attached system.

    Manually configuring each system would not work either as you need the NAT service of a router as well.
     
  6. largecam357

    largecam357 TS Rookie Topic Starter

    linksys 4 port router has the DHCP
     
  7. jobeard

    jobeard TS Ambassador Posts: 9,322   +621

    OK! :) the wiring should be
    Code:
    modem---router---up-to-three-systems
              |
              +------- 10 port switch ---- other systems (or maybe ALL systems)
    
     
  8. largecam357

    largecam357 TS Rookie Topic Starter

    yes that is correct configuration
     
  9. jobeard

    jobeard TS Ambassador Posts: 9,322   +621

    The NIC driver supersedes the MOBO, but your symptoms are typical of
    a driver or router firmware issue.

    you might power off (pOFF) the modem and router and disconnect the switch
    wait 30 seconds
    pON the modem; wait 30 secs
    pON the router; wait 30 secs
    recable the switch to the router​

    make sure ALL systems are set for DHCP to avoid any possible duplicate IP address assignments.

    Can you connect the failing system directly to the router?
    login an Admin account and get a command prompt (run->cmd)
    issue
    • ipconfig /all
      which will document a (hopefully) operational config
      (ie you can PING www.google)
    • ipconfig /release
      which will undo those settings; wait 30 seconds
    • ipconfig /renew
      which should succeed
      to allow ipconfig /all to replicate the first settings
     
  10. largecam357

    largecam357 TS Rookie Topic Starter

    tryed all of that already the issue just happens on this jetway mobo all other pc work great
     
  11. jobeard

    jobeard TS Ambassador Posts: 9,322   +621

    the MOBO has nothing to do with the network -- it's all in the NIC, its driver, your router, modem or the ISP.

    Those are the choices ... game, set, match.
     
  12. largecam357

    largecam357 TS Rookie Topic Starter

    if i manualy config the IP address in NIC properties it will accept the default gateway and DNS but not the NIC's IP address
     
  13. jobeard

    jobeard TS Ambassador Posts: 9,322   +621

    on any one of the systems that is stable, run->ipconfig /all >mytcp.txt

    then come back with a follow-up and attach mytcp.txt
     
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