I understand know that this was included in service pack three. I must have over read it several months ago. I would recommend going into your network adapter and ensure that there is a check mark next to the link layer topology discovery. You can view my attachment for further details. Hope that helps.If you're running XP SP3, this link is obsolete. (already a part of SP3)
Try going to the following link on your xp machine and installing this to the machine. Download details: Link Layer Topology Discovery (LLTD) Responder (KB922120) If that doesnt work then I dont know.
I understand know that this was included in service pack three. I must have over read it several months ago. I would recommend going into your network adapter and ensure that there is a check mark next to the link layer topology discovery. You can view my attachment for further details. Hope that helps.If you're running XP SP3, this link is obsolete. (already a part of SP3)