Looking to track down connection issue - ethereal any use?

Discussion in 'General Discussion' started by bobkoure, Apr 21, 2006.

  1. bobkoure

    bobkoure LI Guru Member

    I'm running Hyperwrt 2b1+Thibor14 and am getting the dreaded "failed to acquire network address" error when trying to connect with a Windows XP pro laptop.
    It could just as easily be windows as the Linksys router (maybe it's more likely as I see this error pretty often on other windows laptops connecting to all sorts of routers).
    I've "googled" (interesting how this has become a verb) for this issue and have found all sort of threads on different forums, without anyone seeming to understand what is really going on.

    I'm hoping someone here can either enlighten me or at least provide me with some pointers and references so I can self-enlighten. I'd really prefer to understand what the issue is ans then use that understanding to fix things - as I could then fix it again on a different laptop/router combination - and, of course, also be able to explain it here when someone asked.

    I've got ethereal installed on the laptop and have been looking at packets going to/from the wireless mpci card and see a number of protocols - but never see a DHCP request coming from the laptop (and no DHCP server responses either, of course).
    Once the laptop gets to the "limited connectivity" state, I can see broadcast (ARP and suchlike) packets (oh - I am using the router as an access point so have the connection to the rest of the local network via one on the "LAN" ports and have the DHCP server on the Linksys turned off as there's another DHCP server connected - so there are some broadcast packets).

    So, where do I start? Recommended RFCs to read? Anything else? A state diagram? Pointers to "wireless protocols for dummies" kinds of things greatly appreciated - thanks!

    Oh - and I can attach an ethereal log to a follow-up if anyone's interested, although, for learning, I'd expect that a log from a successful connection would be more illuminating...
  2. bobkoure

    bobkoure LI Guru Member

    Hmmm... wrong forum to ask this?
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