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Request Timed Out on Windows XP Home

Posted on 2003-02-28
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Last Modified: 2010-04-11
3 computers, activated software, TCP/IP installed, ICS off, cables good, switch good - cannot get a good ping back from any of these machines.  Although do get intermittent pings back?

Any suggestions?
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Question by:cbrindley
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by:night_monkey
ID: 8046601
maybe your network card is bad. or it's possible that the latest driver has not been installed. try downloading an up to date driver the network card on the pc you're having the problems on.

and out of curiousity, how are you certain that the cables and switch are good?
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by:cbrindley
ID: 8046869
doubtful that the net cards are faulty, these are brand new machines.  I have contacted the manufacturer and they claim they have never had problems with them?  they also verified that I was using the correct drivers.

I have used two difft sets of cabling and switches.  both have checked out on another network.

thinking out-loud, it seems to be a firewalling problem because the addresses time out - not destination unreachable, but I have disabled all the firewalling on the cards and ICS is disabled and as I said earlier sometimes I get a ping back, maybe net card auto-sensing getting wrong speed?
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by:night_monkey
ID: 8046889
well, if you're getting intermittent replies i would guess that the firewall thing should be ruled out, too.

but you may be on to something with the nics autosensing. is/are your switch(es) dual speed? maybe you can set the nic's speed to whatever the switch's speed is. or maybe you can specify the network media instead of having it autosensed (if it's set that way). *thinking out loud, too.*

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Author Comment

by:cbrindley
ID: 8079338
Solved.  The Lan cards were onboard the motherboard and for some crazy reason two of the computers had identical MAC addresses.  I had to manually enter a MAC address via the network properties for the LAN card... jeez
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by:night_monkey
ID: 8082744
wow, that's a weird one. theyre supposed to be completely unique. how'd you figure out that they had the same mac address?
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Author Comment

by:cbrindley
ID: 8087749
Had to be something hardware related so I checked them

ipconfig /all

under physical address and two of them shared the same one.  This was causing the problem because the switch (physical/data-link) uses the MAC to identify the different cards.  The intermittent pings I was receiving must have been due to the protocols I had loaded.

I ripped into the manufacturer who I am now invoicing for my time.  I suspect it may be illegal to sell hardware like this.  If anyone knows if this is the case in Australia let me know.
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by:CleanupPing
ID: 9153323
cbrindley:
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