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 funchordsHelloPremium,MVM
join:2001-03-11
Yarmouth Port, MA
kudos:5 | reply to mmacedon
Re: [Help Me] DWL-G710 "IP address conflict" Question said by mmacedon :
So, it makes sense then that the laptop sees a conflict when the DWL-G710 "repeats" its signal (with same IP adress as the laptop, but with a different physical address). Is that the way its supposed to work? If so, I don't see how the conflict can be avoided.
I -might- be able to join you in this theory ... but there are several reasons why not.
I spent a good hour thinking on this one.
I think the problem is because your network stack doesn't seem to be changing to "Media Disconnected" state when you disassociate from the DI-524, DWL-G710, or unplug a wired connection. Going to Media Disconnected state removes the TCP/IP assignment from the stack.
One of the reasons can be because your wireless card is part of a Bridged Connection in Windows. Go to Network Connections on the laptop and look for the mention of a MAC Bridge Miniport. If it appears there, delete it (it is easily recreated, but is usually unnecessary). This operation takes a minute or so. Then reboot the computer and test again.
If you did not have a bridge configured in Network Connections, or if the above didn't work, here's what I'd like to see ...
Your laptop's "arp -a" output from before the ping and warning, and then the "arp -a" output from after (2 outputs, total).
"IPCONFIG /ALL" from the laptop from before the ping, and then from after (2 total).
--
Robb Topolski -= funchords.com =- Hillsboro, Oregon USA
~ Keeper of the D-Link FAQ ~ Did you Search? ~ More features, Free! Join BBR! ~ | |
| Hello,
I am having the same problem as the person you were trying to help. I have followed the thread and have done everything up until the mini-port removal, to no avail. When I us "ipconfig /all" I see a mini-port, however, when I go to "Network Connections," as you recommended, I do not see a "Mini-port" or "Bridge". I bet that the last person you were trying to help did have a mini-port (and would have seen it when using "ipconfig"), but, like me, did not see it in "Network Connections". I am convinced that the "Mini-port" is the problem, but cannot seem to find it to remove it. Please help! Thanks. | |
funchordsHelloPremium,MVM
join:2001-03-11
Yarmouth Port, MA
kudos:5 | Re: [Help Me] DWL-G710 "IP address conflict" Quest There are two mini-ports that are very common -- one is the bridge that we've been talking about, the other is the Packet Scheduler Miniport (PSCHED).
PSCHED is installed by default, but is usually not used unless something on your machine is enabled for prioritized packets (e.g. video/voice gets higher priority than P2P downloads).
So if the miniport you are seeing is PSCHED, it is not the problem.
Do an 'IPCONFIG /ALL' and copy it into here and I'll see what I can see. Meanwhile, I have a different theory.
If you are connecting through a repeater, then immediately configure to connect directly to the AP, and/or go back and forth without explicitly disconnecting first -- you will have TCP/IP conflicts because the ARP cache is not cleared.
This is a bug I discovered in Windows, but I'm certain that it's actually in the specification.
The ARP cache is a table mapping IP addresses to MAC addresses. The ARP cache is cleared when TCP/IP is bound or removed from a network device. This happens when you disconnect, but it doesn't happen when you move from connection to connection!
So, when you move from repeater to AP, the ARP table can't take the new entry because it already has one for that IP address! Viola -- you get the conflict message.
I've reproduced this in a couple of different ways and I think it might have something to do with the O.P.'s original problem, too.
To work around it, make sure you disconnect from the previous connection path, then reconnect to the same device. This clears the ARP cache.
You can also do the command "ARP -d *" as another workaround.
--
Robb Topolski -= funchords.com =- Hillsboro, Oregon USA
~ Keeper of the D-Link FAQ ~ Did you Search? ~ More features, Free! Join BBR! ~ | |
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