Good idea, this is also possible with a Windows DHCP server by ysing the DHCP snap in and I would assume Snow Leopard server has something similar. Frank
-----Original Message----- From: macvisionaries@googlegroups.com [mailto:macvisionar...@googlegroups.com] On Behalf Of Simon Fogarty Sent: Monday, November 02, 2009 12:53 AM To: macvisionaries@googlegroups.com Subject: RE: switching to an Ethernet connection You can do a combo of dhcp and static ip addressing, but it's called reservation. In a dhcp server you can request that a mac address have a specific IP address each time it connects to the network. This is what is common with a server so that dns and dhcp / important servers on a system can keep ip addresses rather than loing one each time it's lease roles over or restarted. Under a linux based server it's configured in a dhcp.comf sile. -----Original Message----- From: macvisionaries@googlegroups.com [mailto:macvisionar...@googlegroups.com] On Behalf Of Frank Ventura Sent: Monday, 2 November 2009 3:36 a.m. To: macvisionaries@googlegroups.com Subject: RE: switching to an Ethernet connection Scott, I think what is happening is that when the wireless obtains an IP through a DHCP server that IP has a specific lease time that is valid even if the connection is lost. So if you obtain a lease which is for 8 hours and two hours later you drop that wireless connection the Mac will still hold onto that IP for another 6 hours or intil forced to update its IP which is what you do when you switch to another connection manually. I don't think the Mac will do an IP release and renew merely by loosing one connection and picking up another as the DHCP server and leases are independent from the physical connection. Frank -----Original Message----- From: macvisionaries@googlegroups.com [mailto:macvisionar...@googlegroups.com] On Behalf Of Scott Howell Sent: Saturday, October 31, 2009 6:09 PM To: macvisionaries@googlegroups.com Subject: Re: switching to an Ethernet connection Hmmm, that is a possibility, but not sure since I use dhcp. I wanted to do a combination of dhcp and static but didn't have enough machines to go through all that work. :) If I had a server and was forwarding ports, I'd have a need to do this without a doubt and would experiment more. I am a little surprised in a way considering once the wireless is off, the only other connection is the wired and I assumed it would default back to that. However, you know what they say about assuming. :) I wonder since the wireless I assume is dhcp and the connection is lost, if the dhcp client doesn't go out looking for an active connection to grab a new address and this forces the wired connection online/active. On Oct 31, 2009, at 4:17 PM, Esther wrote: > > Hi Scott, > > I used to use this method of turning AirPort off under Tiger, and > would automatically get switched to Ethernet, but after migrating to > Leopard (and a MacBook), when I switch off AirPort and change over to > Ethernet I can't automatically get a connection. Wonder if this is > because I set this up as a fixed IP address? It used to work for me, > but now I have to force the connection to go through by changing from > AirPort to Ethernet when I get the diagnostic prompt. > > Cheers, > > Esther > > Scott Howell wrote: > >> >> Mark, if you turn AirPort off from the menu (where the clock etc. is >> located) it will automatically switch to the wired port. I do this >> quite often since I dont use the wireless while sitting at my desk. >> On Oct 31, 2009, at 3:57 PM, Mark BurningHawk Baxter wrote: >> >>> >>> I'm running Leopard on a MBP15; after plugging the cable into the >>> router and Ethernet connection, what app do I use to switch from >>> Airport to an Ethernet connection? I'm totally drawing a blank >>> here. :) >>> >>> >>> Mark BurningHawk Baxter >>> >>> Skype and Twitter: BurningHawk1969 >>> MSN: burninghawk1...@hotmail.com >>> My home page: >>> http://MarkBurningHawk.net/ >>> >>> >>>> >> >> >>> > > > > No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.698 / Virus Database: 270.14.40/2471 - Release Date: 10/31/09 03:53:00 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.423 / Virus Database: 270.14.43/2474 - Release Date: 11/01/09 19:39:00 --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "MacVisionaries" group. To post to this group, send email to macvisionaries@googlegroups.com To unsubscribe from this group, send email to macvisionaries+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/macvisionaries?hl=en -~----------~----~----~----~------~----~------~--~---
