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Microsoft Network DHCP help

Posted on 2013-01-31
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Last Modified: 2013-01-31
i had two machines on my network drop thier given DHCP ip address and it was replaced with

192.168.1.100
255.255.255.0
192.168.1.1

any ideas?
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Question by:JerseyGiant
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by:foxpc123
ID: 38840321
Is it possible that you have another DHCP server on the network.

You could always check the TCP/IP alternative settings on the network parameters to see if they have these manually set.

Could you provide an ipconfig /all of the affected machines?
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by:JerseyGiant
ID: 38840338
the manually setting were not changed. theses are XP machines , i stated win7 but was incorrect. we have only 1 DHCP server. bizzar right?
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by:TazDevil1674
TazDevil1674 earned 250 total points
ID: 38840355
Do you have an ADSL router on the same network?  192.168.1.1 sounds more like a router!
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by:choward16980
ID: 38840367
What is the DHCP server??   Is both leases listed on the server?  Or the new conflicting lease?  It's more then likely someone plugging in a piece of hardware with DHCP enabled if you don't see the troubled lease on your DHCP server.
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by:choward16980
ID: 38840378
PS, this doesn't sound like a Windows 7 issue unless you have cloned emac addresses on the NICs.
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foxpc123 earned 250 total points
ID: 38840384
If 192.168.1.1 is not a recognised address in your network  it may be worth trying to open this in a browser to see if you get a login - and it may tell you what it is as well.
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Author Comment

by:JerseyGiant
ID: 38840443
ya know what. i bet you thats it a router is plugged in somewhere with DHCP eenabled..
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by:TazDevil1674
ID: 38840451
try to access http://192.168.1.1 from one of the PCs that got the odd DHCP
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Author Comment

by:JerseyGiant
ID: 38840838
thanks it was the router .. thanks ,i just disabbled the DHCP.
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