iMac networking Native Ethernet

pizza_789 · pizza_789 #1 (**permalink**)

08-20-2008, 08:49 PM

I am helping a friend to setup a network which consists of Win XP machines and an iMac OS 10.4 (?). We are using a Speedstream DSL/Router and Airport. The Airport is being used as a switch at the moment. The Win XP systems work fine across a wired network. The iMac works for a while across a wireless connection. The Airport drops for some reason?? Not sure why. I try connecting the wired network to the iMac and I get message "no cable
connected". This is a hard wired connection and my Win XP laptop works fine using the same physcial connection.

When I check the Network settings on iMac I see that native Ethernet has an IP address of 144.xxx.xxx.xxx and it should be 10.0.1.x. I have reset the DHCP and no change. It is as if the network adapter in the iMac is not functioning?? In the Win world there is a command to reset IP - netsh interface reset ip. Is there something in the Mac world that will drive a reset to the IP interface?

I've tried powering the system up and down no change. I seem to remember that somewhere there is a parameter to set in a file - outside of the system preference windows?

There is no problem with the wired connection itself. I suppose the net adapter within the iMac could be defective?

Other suggestions?

Thanks

Dysfunction · Dysfunction #2 (**permalink**)

08-20-2008, 09:25 PM

Power the router off and back on (I assume that your router is your dhcp server).

pizza_789 · pizza_789 #3 (**permalink**)

08-20-2008, 10:35 PM

Yeah, I've done that may times. I have no problems at all connecting a laptop running Win XP. Connection is good always with Windows.

I believe the network adapter is not communicating out to the router.
Even if I hard code the IP address, it does not work.
The adapter needs to be reset or it may be defective.
I'm sure there was a file that required a small change to tell OS X that
the network adapter was connected. If the adapter could be removed easy
it might help, but that is not possible as it is on the MB.

Dysfunction · Dysfunction #4 (**permalink**)

08-21-2008, 12:06 AM

It may help, if you have the restore CD's and you and you can boot off them and it works fine then it's probably a preference. Maybe

/Library/Preferences/SystemConfiguration/NetworkInterfaces.plist or one of the other ones in there. I ran into a similar problem and ditched /Library/Preferences because I didn't feel like tracking it down.. and it resolved it.

pizza_789 · pizza_789 #5 (**permalink**)

08-21-2008, 07:32 AM

Thanks, I try your suggestion.

Dysfunction #2 (permalink)
Member Since: Mar 17, 2008 Location: Tucson, AZ Posts: 6,534 Mac Specs: 2008 and 2011 15" mbps, late 11 iMac, iPhone 4s, and too many ipods and other stuff	08-20-2008, 09:25 PM Power the router off and back on (I assume that your router is your dhcp server). mike This machine kills fascists Got # ? phear the command line!
	QUOTE Thanks

Dysfunction #4 (permalink)
Member Since: Mar 17, 2008 Location: Tucson, AZ Posts: 6,534 Mac Specs: 2008 and 2011 15" mbps, late 11 iMac, iPhone 4s, and too many ipods and other stuff	08-21-2008, 12:06 AM It may help, if you have the restore CD's and you and you can boot off them and it works fine then it's probably a preference. Maybe /Library/Preferences/SystemConfiguration/NetworkInterfaces.plist or one of the other ones in there. I ran into a similar problem and ditched /Library/Preferences because I didn't feel like tracking it down.. and it resolved it. mike This machine kills fascists Got # ? phear the command line!
	QUOTE Thanks

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pizza_789 #1 (permalink)
Member Since: Aug 20, 2008 Posts: 3	08-20-2008, 08:49 PM I am helping a friend to setup a network which consists of Win XP machines and an iMac OS 10.4 (?). We are using a Speedstream DSL/Router and Airport. The Airport is being used as a switch at the moment. The Win XP systems work fine across a wired network. The iMac works for a while across a wireless connection. The Airport drops for some reason?? Not sure why. I try connecting the wired network to the iMac and I get message "no cable connected". This is a hard wired connection and my Win XP laptop works fine using the same physcial connection. When I check the Network settings on iMac I see that native Ethernet has an IP address of 144.xxx.xxx.xxx and it should be 10.0.1.x. I have reset the DHCP and no change. It is as if the network adapter in the iMac is not functioning?? In the Win world there is a command to reset IP - netsh interface reset ip. Is there something in the Mac world that will drive a reset to the IP interface? I've tried powering the system up and down no change. I seem to remember that somewhere there is a parameter to set in a file - outside of the system preference windows? There is no problem with the wired connection itself. I suppose the net adapter within the iMac could be defective? Other suggestions? Thanks
	QUOTE Thanks

pizza_789 #5 (permalink)
Member Since: Aug 20, 2008 Posts: 3	08-21-2008, 07:32 AM Thanks, I try your suggestion.
	QUOTE Thanks

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