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Keda · Oct 16, 2003, 03:30 PM

The subject says it, but how can I make sure the computer has released an IP from a DHCP server? I s there a terminal command?

gorickey · Oct 16, 2003, 04:14 PM

Are you trying to get a new IP from a DHCP Server? Or make sure the one you have is gone?

Keda · Oct 16, 2003, 04:51 PM

I'd like to do this so I can get a new IP.

Usually, I just change the mode from DHCP to something else and hit apply. Then, change back and apply again. i know there is a better way.

gorickey · Oct 16, 2003, 05:39 PM

Originally posted by Keda:
I'd like to do this so I can get a new IP.

Usually, I just change the mode from DHCP to something else and hit apply. Then, change back and apply again. i know there is a better way.

Well, in Panther you'll be happy to know that their is actually a "Renew DHCP Lease" button that will automate and make it easier under Network preferences; however, in Jaguar I do exactly as you described...I change the mode to "Boot DHCP Server"...Apply..."Using DHCP"...Apply....

MountainMac · Oct 16, 2003, 07:15 PM

Originally posted by Keda:
[BUsually, I just change the mode from DHCP to something else and hit apply. Then, change back and apply again. i know there is a better way. [/B]

That's the way our Help Desk recommends: Release an IP address. I guess "wait for Panther" is the answer as for a better way

sbjordal · Oct 16, 2003, 09:27 PM

Originally posted by Keda:
The subject says it, but how can I make sure the computer has released an IP from a DHCP server? I s there a terminal command?

in the Terminal, issue the IFCONFIG command.
Look for en0 and/or en0. decide which ethernet interface you need to release the IP address and type in

ifconfig enx down (turns off the interface) and then
ifconfig enx up (turns it back on again)

this will release and renew the DHCP lease

Keda · Oct 17, 2003, 08:10 AM

Look for en0 and/or en0. decide which ethernet interface you need to release the IP address and type in

What is en0? Where do I find it?

Also, (going out on a limb) can I log into a base station (AE) and do this samething?

The reason Im asking these question is because my cable modem has been acting up recently. They tech from Comcast says that I have to shut down and restart my machine to clear the cached IP. I just dont buy it. I have, however, been shutting down my base station to renew it's IP.

[APi]TheMan · Oct 17, 2003, 11:38 AM

Originally posted by Keda:
What is en0? Where do I find it?

en0 is your ethernet card. en1 is your airport card.

Depending on which interface you're using you can type ifconfig interface down where you'd put in either en0 or en1. For example I'm using my ethernet card (en0) to connect to the net, the command I'd use to release my IP would be:

Code:
[aorth@ssku225-100-c: ~]$ ifconfig en0 down

Then I'd type:

Code:
[aorth@ssku225-100-c: ~]$ ifconfig en0 up

That should do it.

mitchell_pgh · Oct 17, 2003, 12:10 PM

Well, you could always reformat and do a clean install...

(That's my favorite answer when M$ users ask for help)

froejoe · Oct 17, 2003, 12:47 PM

Originally posted by Keda:
The subject says it, but how can I make sure the computer has released an IP from a DHCP server? I s there a terminal command?

In the Network pane, just disable and then re-enable the interface (port).

Joe

Keda · Oct 17, 2003, 01:03 PM

Thanks for the responses.

I am looking forward to playing around with this after work.

tritonus · Oct 18, 2003, 03:44 AM

Originally posted by gorickey:
Well, in Panther you'll be happy to know that their is actually a "Renew DHCP Lease" button that will automate and make it easier under Network preferences; however, in Jaguar I do exactly as you described...I change the mode to "Boot DHCP Server"...Apply..."Using DHCP"...Apply....

Thanks for this info about Panther. I'm also doing it the same way in Jaguar.