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Legacy Forums => General Discussion (Legacy) => Topic started by: micronator on November 07, 2002, 08:59:54 AM

Title: DHCP and no external IP
Post by: micronator on November 07, 2002, 08:59:54 AM

SME 5.5, pentium 133, cable-modem with Videotron, using DYNDNS.ORG, internal NIC D-LINK and looks OK. External is a 3C900 changed from 3c509. The DHCP don't want to give me an address.
Before I was using another PC @266Mhz. And wanted to recuperate the faster one to try onother OS.
ifconfig -a gives me some packets exchange between external NIC and cable.
I seached the forum and found nothing. I switch off all other stations. the modem etc... wait 30 minutes, restart cable-modem and SME and same problem.
I re-installed everything, same problem

Any help appreciated.
Thank you for your time

Title: Re: DHCP and no external IP
Post by: Bill Talcott on November 07, 2002, 06:37:59 PM

Some ISPs track the MAC address of the NIC. If you swap NICs, it won't work without calling the ISP and telling them to switch the MAC.

Sometimes, the cable modem itself tracks the NIC's MAC. In this case, resetting the modem with a paperclip in the pinhole will clear it, and allow the new NIC to work.

Title: Re: DHCP and no external IP
Post by: micronator on November 07, 2002, 09:06:48 PM

I have a cable-modem, there is a very small hole at the back, is that the one?

Thank Bill

Title: Re: DHCP and no external IP
Post by: Bill Talcott on November 07, 2002, 09:25:49 PM

micronator wrote:
>
> I have a cable-modem, there is a very small hole at the back,
> is that the one?

Probably.

Title: Re: DHCP and no external IP
Post by: micronator on November 08, 2002, 01:38:23 AM

Exactly. I tried "the paper clip fixes them all" and it worked perfectly.

Thanks a lot again.

MAR

PS: I just love this forum, quite active and to the point.

Title: Re: DHCP and no external IP
Post by: Michael Smith on November 08, 2002, 07:53:50 AM

For those of you who might be replacing a PC connected directly to a cable modem with an SME server, you can sometimes get results by manually releasing the IP address.

Title: Re: DHCP and no external IP
Post by: Micronator on November 10, 2002, 03:48:11 AM

I tried that with: dhcpcd eth1 -k (to kill the lease)
then with: dhcpcd eth1 -n ( to renew the lease)

It still didn't want to get the ip-address.

The best is to reset (the paper clip pass) the cable-mode (maybe unplug from the wall will do???)

Just a bid of trial & error you won't have to redo.

MAR