I'm not sure what the start of this thread was but I recently learned something about DHCP, MAC addresses and AppleTalk at a friend's place. With @Rogers (formerly @Home) I connected the cable modem to the original computer (with the original MAC address). Turned *on* AppleTalk in the Chooser. Shut down the computer, turned off the cable modem. Hooked it up to the "new" computer, and, voila, the MAC address was released (this may be specific to a certain cable modem (Terryon (sp?))).
Eric. Original message I posted a few weeks back: ---------- From: "Eric D." <[EMAIL PROTECTED]> Reply-To: <[EMAIL PROTECTED]> (Mac Canada) Date: Mon, 17 Jun 2002 10:20:44 -0400 To: <[EMAIL PROTECTED]> (Mac Canada) Subject: DHCP, releasing MAC (ethernet ID) addresses, Mac OS, Terryon cable modem and Roger's Cable Here's something I thought the @Rogers.com (and anyone with DHCP problems) subscribers might find useful. PS The service was Rogers in London, the "original" computer was a 7200/90 OS 9.1, the "new" (brand spanking) computer was a G4/733 OS 10.1.3 and the modem was a "Terryon" (spelling?), the TCP/IP setup was with DHCP. Anyway, I tried moving the modem from the "old" to the "new" computer and couldn't get it to work, regardless of what I did. With the help (shock of shocks) of Roger's tech support (way to go Raj) I reattached the cable modem onto the "old" computer, turned ON AppleTalk in the Chooser and shutdown the "old" computer. Then, I hooked up the cable modem to the "new" computer (which was off) and turned it on (it had been configured to use DHCP). It WORKED. Apparently turning ON AppleTalk (with the Terryon modem attached and the internet link active) will cause the Roger's DHCP server & the cable modem to release the MAC address of the "old" computer, thus allowing the server to re-learn the MAC address of the "new" computer. Eric. Yesterday's lengthy message to G-List follows: ------------ Hi ya'll, I learned something absolutely new this weekend (shock of shocks to me). Anyway, for those of you suffering with cable modems, DHCP and the inability to get a second computer up and running on the internet this may prove to be the key to solving the problem. Pre-script: this was a kludge for a Terryon (spelling?) cable modem, DHCP and moving the active cable modem from one computer (7200/90 OS 9.1) to G4/733 OS X 10.1.3 (brand spanking new... upgraded to 10.1.5 once it was online). We tried moving the cable modem from the 7200 to the G4 without success. I tried *all* my standard trouble-shooting techniques and came to the conclusion that there was an incompatibility with the G4 and either (a) the cable modem or (b) @Rogers' (formerly @Home) service. Anyway, after calling the tech support (and thinking the support guy a fool for having me go to the Chooser to do IP stuff ;) we got it up and running. Steps: (1) hook cable modem up to the computer that works (i.e. the "old" computer). (2) go into the Chooser and turn *on* AppleTalk (3) shut down the computer and disconnect the modem (4) hook cable modem up to new computer and ensure you have DHCP selected in the TCP/IP settings (or Network for OS X) (5) away you go. Apparently this works with the Terryon modem (don't know about others) and forces Roger's servers to release the MAC address unique to the original computer (MAC does not refer to Macintosh in this case) and allow the DHCP server to accept the MAC address from the new computer. However, you have to do the same trick to get your original computer back on-line. PS The MAC address is a unique, unchanging ID assigned to every ethernet interface in existence (if you look at the back of your computer there's a pretty good chance the MAC address (aka Ethernet ID) will be reported). Eric. -- Mac Canada is sponsored by <http://lowendmac.com/> and... on 2/7/02 12:44, J Cole at [EMAIL PROTECTED] wrote: > Hmm. I went all the way through to a level 2 tech with them yesterday, and > was told the same thing, over and over: "it isn't possible for us to reset > the ethernet device hardware address". I made sure they understood that I > wasn't some idiot asking them to "zap" my machine from Ohio (where their > tech support is) and reconfigure my MAC address. They insist that it is no > longer possible to do so, that since the changeover (from @home to ATTBI) > any machine ID requesting an IP is treated as a separate modem. (Or > something like that). -- G-List is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- We have Apple Refurbished Monitors in stock! | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> G-List list info: <http://lowendmac.com/lists/g-list.shtml> Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/g-list%40mail.maclaunch.com/> Using a Macintosh? Get free email and more at Applelinks! <http://www.applelinks.com>
