XP Networking Question - Does DHCP always work?

Discussion in 'Networking Issues' started by windsurfer, Apr 25, 2005.

  1. windsurfer

    windsurfer Network Guru Member

    I have been switching between two sub nets with XP and it seems that XP gets stuck some times. In the past I thought I had created a brick out of my WRT54G when it was not a brick at all.

    We took a bricked router and connected it to Win98 and it worked fine. We then added a PCMCIA 10/100 port to the XP laptop and it connected.

    After that I found that if it will not connect via DHCP after a sub net change, you need to hard wire the port before you assume that the Router is a brick.

    Any one know a solution for XP?

    Going to Linux is not a choice in this situation.


  2. gotamd

    gotamd Network Guru Member

    I believe you can set up Windows XP to manually grab an IP address even when the router is set to assign via DHCP. You could try that. Go to the network connection properties and then the TCP/IP properties and do things manually.
  3. windsurfer

    windsurfer Network Guru Member

    Yes this works fine.

    I really want to know how to fix DHCP so that it works all the time as it should. Thinking that you just created a brick when all that chages was the IP means lots of extra flashing for no reason.

  4. bluedog

    bluedog Network Guru Member

    you can always go to the command line and type ipconfig /release

    then ipconfig /renew

    If that doesn't help, sorry I didn't understand question
  5. windsurfer

    windsurfer Network Guru Member

    You are correct, this should fix the problem and often it does.

    I have seen times where you can type these commands 5 or 6 times and XP will say it has an IP address of the internal windows default address. The other thing you may get is a media adapter cannot be configured error.

    If you do a cold boot this almost always fixes the problem but that takes a lot of time.

    This only happens to me when I change from one subnet to another on XP PRO. The two I have been using are and

  6. DennisI

    DennisI Network Guru Member

    Try this sequence

    ipconfig /release

    ipconfig /dnsflush

    ipconfig /renew

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