GRRRRR, router.

[Kooldino]

Ok, i have a linksys router.

i took my machine to a LAN party this weekend, and upon plugging it back in today, it decided to change it's DHCP IP addy from the one it was using when I left.
1-why?
2-how do i FORCE it back to the OLD IP, while still using DHCP?
I've tried dropping all of the other PC's IPs, and renewing with this one, but no luck.

[Sasq]

not knowing your router, Is it only that pc you want to have a static IP, or all of them?

If its just the one, fix the IP and tell the router to reserve that IP (ie not issue it, sorry early in the morning here and the correct words are failing me).

Dan

[SitFlyer]

Misunderstood question., deleted previous post.

I have a linksys router. I don't use DHCP on my LAN. I assign an IP to all of my systems. This makes it easier to avoid conflict that may occur.

Edit: You may want to check out this forum at dslreports.com

[Gurm]

Well additionally... if you update the firmware in your linksys, all their routers now have this nifty feature that ALWAYS assigns the same IP to a given MAC address. Very handy, says I.

- Gurm

[HomeBrewer]

If you are refering to the IP supplied to the routed by your ISP yor are probably pretty much out of luck. Most likely the lease time expired on the IP and since your router was not online to automaticaly erenew it was given out to the first machine to request one from your ISP. The only to be sure to keep the same IP is if your ISP will assign you a static IP.

If however you are talking about you machine on the inside of the router there are several ways to "force" it to happen. If say you want your machine to be 192.168.1.10 then go into the router DHCP tab and set the first address to be given out to be the one you want, set the DHCP time to several days worth of minutes, and lastly go to any machine already online and at the command prompt run "ipconfig /release". When all the other machines have been done run "ipconfig /release"and then "ipconfig/renew" on yours. If you have been successful then an "ipconfig /all" should show you have your desired ip. (NOTE you may want to turn disable and renable the DHCP SERVER on the router just prior to doing ipconfig on your machine.

If this doesn't do the trick we can go from there.

[Kooldino]

HomeBrewer, in the real world, that would make sense. In mine, it doesn't.

I even tried this...
DISABLE DHCP
ENABLE DHCP
Start giving addresses out at .XXX
ONLY give out one DHCP addy
......and it won't renew.
BUT, if I do the same thing and allow it to give out 2 addresses, then XXX+1 is assigned to my PC.

So to outsmart it, I tried telling it to give out addresses at XXX-1 and to give out two of them. Too bad, I get XXX-1 every time.

And when i check the DHCP list, I'm the only machine with an IP.


GURM: I'll try flashing it. what you say sounds perfect.

[Kooldino]

Ok, just flashed...that was...interesting...I hit the "flash" button the the exec I downloaded and it told me it couldn't contact the server. Tried it 8 more times and then it just magically worked. ???

GURM, I don't see where it is that I can say "give THIS MAC addy THIS IP"....
care to point me there?

[Kooldino]

bump!

[Taz]

Set the IP range back to how it was originally, go into the DHCP Client table, http://192.168.1.1/DHCPTable.htm probably, tick the delete box next to the machine with the IP you want then click on the Delete button. It would be best to do this from another PC if you have one

Really if you want the same address then you should be using static addresses as your defeating the point of DHCP otherwise.

[Gurm]

Err, I'd have to have a Linksys in front of me. It's in the advanced options.

- Gurm

[Kooldino]

Originally posted by Taz
Set the IP range back to how it was originally, go into the DHCP Client table, http://192.168.1.1/DHCPTable.htm probably, tick the delete box next to the machine with the IP you want then click on the Delete button. It would be best to do this from another PC if you have one

Really if you want the same address then you should be using static addresses as your defeating the point of DHCP otherwise.

i tried this before, but no computer has the IP i want. :-/

[Kooldino]

Gurm, here are the tabs under advanced...

Filters Forwarding Dynamic Routing Static Routing DMZ Host MAC Addr. Clone

[SitFlyer]

Originally posted by Gurm
Well additionally... if you update the firmware in your linksys, all their routers now have this nifty feature that ALWAYS assigns the same IP to a given MAC address. Very handy, says I.

- Gurm

Sorry, but, Linksys routers do not, yet, have this feature.
It sure would be nice to see it implemented, though.

[Gurm]

SitFlyer,

My friend's Linksys most specifically does. We jury-rigged his network so that his machines always had the same IP's, in order to put them in each others' host files.

- Gurm

[SitFlyer]

If you set up static IP's on a Linksys Router, they are not tied to the MAC address. If you friend has this capability on his router, then I and a whole bunch of others want to know. The latest firmware available from Linksys does not have this feature.