Wireless LAN DHCP Issue

Discussion in 'Wireless Networking' started by Fred, May 1, 2005.

  1. Fred

    Fred Guest

    This may or may not be the right place to ask this question. If not, I
    would appreciate it if you could point me in the right direction.

    I am setting up a Wireless LAN at work using Odyssey Client 3.03, with Cisco
    Aironet 1200 Access Points, and also running a QIP DHCP Server. My laptop
    OSs are WinXP w/ SP1.

    The problem is that when I go from one access point on one VLAN (VLAN X) to
    another access point on another VLAN (VLAN Y), my laptop will not get
    another IP address from the new VLAN (VLAN Y). Even when I restrat my
    laptop or do an ipconfig /release/renew, the laptop will not receive a new
    IP address. I looked on the MS Knowledgebase and found an article that
    describes this issue exactly. Its recommendation was to upgrade to WinXP
    SP2. I did this and it did not fix the problem.

    However, it did fix a previous and similar problem though. When going from
    access point A to access point B on the SAME VLAN, I was encountering the
    same problem, where it would not obtain an IP Address, even when on the same
    subnet. Upgrading my laptop to SP2 did fix that problem.

    But I am still stuck with the problem of not getting an IP address when
    going from VLAN to VLAN across 2 different access points.

    Please advise!!!
    Fred, May 1, 2005
    #1
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  2. Fred

    Charlie Guest

    Try the group alt.internet.wireless. They may be able to help you.
    "Fred" <> wrote in message
    news:...
    > This may or may not be the right place to ask this question. If not, I
    > would appreciate it if you could point me in the right direction.
    >
    > I am setting up a Wireless LAN at work using Odyssey Client 3.03, with
    > Cisco
    > Aironet 1200 Access Points, and also running a QIP DHCP Server. My laptop
    > OSs are WinXP w/ SP1.
    >
    > The problem is that when I go from one access point on one VLAN (VLAN X)
    > to
    > another access point on another VLAN (VLAN Y), my laptop will not get
    > another IP address from the new VLAN (VLAN Y). Even when I restrat my
    > laptop or do an ipconfig /release/renew, the laptop will not receive a new
    > IP address. I looked on the MS Knowledgebase and found an article that
    > describes this issue exactly. Its recommendation was to upgrade to WinXP
    > SP2. I did this and it did not fix the problem.
    >
    > However, it did fix a previous and similar problem though. When going
    > from
    > access point A to access point B on the SAME VLAN, I was encountering the
    > same problem, where it would not obtain an IP Address, even when on the
    > same
    > subnet. Upgrading my laptop to SP2 did fix that problem.
    >
    > But I am still stuck with the problem of not getting an IP address when
    > going from VLAN to VLAN across 2 different access points.
    >
    > Please advise!!!
    >
    >
    Charlie, May 1, 2005
    #2
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  3. Does it work with the native Windows client?

    We should be able to do VLAN roaming okay, but it looks like you have a
    non-Microsoft back-end, so you might be using a protocol that we don't
    support natively.

    --
    Standard Disclaimers -
    This posting is provided "AS IS" with no warranties,
    and confers no rights. Please do not send e-mail directly
    to this alias. This alias is for newsgroup purposes only.


    "Fred" <> wrote in message
    news:...
    > This may or may not be the right place to ask this question. If not, I
    > would appreciate it if you could point me in the right direction.
    >
    > I am setting up a Wireless LAN at work using Odyssey Client 3.03, with
    > Cisco
    > Aironet 1200 Access Points, and also running a QIP DHCP Server. My laptop
    > OSs are WinXP w/ SP1.
    >
    > The problem is that when I go from one access point on one VLAN (VLAN X)
    > to
    > another access point on another VLAN (VLAN Y), my laptop will not get
    > another IP address from the new VLAN (VLAN Y). Even when I restrat my
    > laptop or do an ipconfig /release/renew, the laptop will not receive a new
    > IP address. I looked on the MS Knowledgebase and found an article that
    > describes this issue exactly. Its recommendation was to upgrade to WinXP
    > SP2. I did this and it did not fix the problem.
    >
    > However, it did fix a previous and similar problem though. When going
    > from
    > access point A to access point B on the SAME VLAN, I was encountering the
    > same problem, where it would not obtain an IP Address, even when on the
    > same
    > subnet. Upgrading my laptop to SP2 did fix that problem.
    >
    > But I am still stuck with the problem of not getting an IP address when
    > going from VLAN to VLAN across 2 different access points.
    >
    > Please advise!!!
    >
    >
    Carl DaVault [MSFT], May 2, 2005
    #3
  4. DNS fails: restart windows, after you go to start/run, and type CMD, then at that prompt type: IPCONFIG /flushDNS and then :
    IPCONFIG /registerDNS

    --

    Mark L. Ferguson
    FAQ for MS Antispyware version 1.0.509
    http://www.geocities.com/marfer_mvp/FAQ_MSantispy.htm
    marfers notes for windows xp http://www.geocities.com/marfer_mvp/chatNotes.htm
    ..
    "Fred" <> wrote in message news:...
    > This may or may not be the right place to ask this question. If not, I
    > would appreciate it if you could point me in the right direction.
    >
    > I am setting up a Wireless LAN at work using Odyssey Client 3.03, with Cisco
    > Aironet 1200 Access Points, and also running a QIP DHCP Server. My laptop
    > OSs are WinXP w/ SP1.
    >
    > The problem is that when I go from one access point on one VLAN (VLAN X) to
    > another access point on another VLAN (VLAN Y), my laptop will not get
    > another IP address from the new VLAN (VLAN Y). Even when I restrat my
    > laptop or do an ipconfig /release/renew, the laptop will not receive a new
    > IP address. I looked on the MS Knowledgebase and found an article that
    > describes this issue exactly. Its recommendation was to upgrade to WinXP
    > SP2. I did this and it did not fix the problem.
    >
    > However, it did fix a previous and similar problem though. When going from
    > access point A to access point B on the SAME VLAN, I was encountering the
    > same problem, where it would not obtain an IP Address, even when on the same
    > subnet. Upgrading my laptop to SP2 did fix that problem.
    >
    > But I am still stuck with the problem of not getting an IP address when
    > going from VLAN to VLAN across 2 different access points.
    >
    > Please advise!!!
    >
    >
    Mark L. Ferguson, May 4, 2005
    #4
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