Whoops, I should have said: Some router can probe the up-link of the network to obtain a dynamically assigned WAN IP address. Static IPs require the network admin reserve the address, so it's not used, and the static IP must usually be entered manually into the computer's network configuration files.
If the computer with the static IP address is turned off long enough that it IP address is no longer cached within the network, and the IP address is not reserved, so it's assigned dynamically to someone else, the computer with the static IP will not be able to get on the network when his computer is turned back on. Regards, LelandJ On 11/06/2010 05:04 PM, Leland Jackson wrote: > Technically a router is nothing more than just another specialized > computer, and if the router is handing out the dynamic IPs, or even > static IPs based on MAC addresses, then it could be involved in the > problem. Your man, or someone helping him, probably created a new > configuration on the computer, which defaults to a dynamic address. > > Are we talking about a local LAN with LAN/WAN router acting as a > gateway, a local network connected to a router acting as a router > connecting two or more networks together, or a public network. Some > router can probe the up-link of the network to obtain thier static WAN > IP address, usually assigned dynamically, and some networks require the > connecting router/computer to be issued a dynamic IP. ISP like > dynamically assigned IPs, so they can recycle IPs as leases expire > without the need to add additional hardware. > > Even in large, publically traded companies most computers have a local > IP that is connected to a switch, hub, or router/gateway; otherwise, we > would run out of Public IPs. > > Regards, > > LelandJ > > > On 11/06/2010 04:39 PM, Michael Madigan wrote: >> It's not a problem with the router, it's with the computer. >> >> --- On Sat, 11/6/10, Leland Jackson<[email protected]> wrote: >> >>> From: Leland Jackson<[email protected]> >>> Subject: Re: [NF] IP Changing on computer, don't get it. >>> To: "ProFox Email List"<[email protected]> >>> Date: Saturday, November 6, 2010, 5:03 PM >>> My Netgear SRNX3205 Router allows me >>> to backup the router settings to a >>> file in a folder on my computer, (eg >>> /home/leland/Downloads, for >>> example). It very easy and quick to do, (eg takes >>> about 30 seconds, if >>> you know where to look in the router's software >>> options.) If the >>> router ever locks up or otherwise need to be reset or >>> rebooted, and the >>> setting are lost or reset to the defaults, I can easily >>> restore them >>> from the backup file on my computer. >>> >>> Most Netgear Router have backup and restore option. >>> >>> Regards, >>> >>> LelandJ >>> >>> >>> >>> On 11/06/2010 03:38 PM, Michael Madigan wrote: >>>> The computer at a customer's site was set to a static >>> IP. IT must be static so I can forward the remote >>> desktop port from my router to the computer. >>>> Last week they couldn't access it I talked them >>> through the changes and somehow the IP was set to dynamic. >>>> Is there any way a computer can revert back to dynamic >>> IP without someone going into the TCP/IP Setup? >>>> I don't know if we have a local computer genius >>> screwing with it or there is something I don't know about >>> Windows XP and static IPs. >>>> Does anyone have an idea? >>>> [excessive quoting removed by server] _______________________________________________ Post Messages to: [email protected] Subscription Maintenance: http://leafe.com/mailman/listinfo/profox OT-free version of this list: http://leafe.com/mailman/listinfo/profoxtech Searchable Archive: http://leafe.com/archives/search/profox This message: http://leafe.com/archives/byMID/profox/[email protected] ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.
