DHCP assigning IP address

I have a WRT54GS2. Devices may be assigned different IP address when power is droped then turn back on. As an example my printer may have an IP of 192.168.1.101 then when power is droped and the printer may get an address of 192.168.1.103. Is there a way to obtain the same address each time? I using OS X 10.6.3 on my Macs and Win 7 on my PCs. The printer is HP.
Jim Smith
Solved!
Go to Solution.

I didn't get what option you want. I'd suggest, you log in to your printer, assign the IP address and that's it. No need to spend a dime. It's like assigning an IP address to your computer in the network adapter properties.
The other option is a router with DHCP Reservation capability.

Similar Messages

Proxy client (over USB connection) with DHCP assigned IP address doesn't work with FRDM-K64F

Hello,
after reading about the issues on this forum with a static IP address on the Freescale FRDM-K64F board I went for an DHCP address but I can't get the proxy client to work over a USB connection with DHCP either.
My console tells me the following:
RTC Time: Wed 2014-01-01 00:07:27
Network initialized
IP Address:      10.143.xxx.yyy (xxx and yyy is real numbers, just changing them for the forum to letters)
Subnet mask:     255.255.252.0
Gateway:         10.143.xxx.yyy
MAC-address:     00:0c:00:06:70:00
And when I try o to connect with the following command :
java -jar proxy.jar -socket 10.143.xxx.yyy
I get the following output and no CLI interface:
Trying to open socket connection with device: 10.143.xxx.yyy:2201
Connected to the socket: Socket[addr=/10.143.xxx.yyy,port=2201,localport=49605]
Open channel 8 with hash 0x130399b3
Channel 8 CLOSED -> OPENED
notifyResponse AVAILABLE_RESPONSE on channel 8
Channel 8 OPENED -> AVAILABLE
Open channel 9 with hash 0x0
Channel 8 AVAILABLE -> REQUEST_SENT
notifyResponse ACK_RESPONSE on channel 8
Channel 8 REQUEST_SENT -> ACKNOWLEDGED
Channel 8 ACKNOWLEDGED -> DATA_SENT
notifyResponse AVAILABLE_RESPONSE on channel 8
Channel 8 DATA_SENT -> AVAILABLE
Channel 8 AVAILABLE -> REQUEST_SENT
notifyResponse ACK_RESPONSE on channel 8
Channel 8 REQUEST_SENT -> ACKNOWLEDGED
Channel 8 ACKNOWLEDGED -> DATA_SENT
notifyResponse AVAILABLE_RESPONSE on channel 8
Channel 8 DATA_SENT -> AVAILABLE
Channel 8 AVAILABLE -> REQUEST_SENT
notifyResponse ACK_RESPONSE on channel 8
Channel 8 REQUEST_SENT -> ACKNOWLEDGED
Channel 8 ACKNOWLEDGED -> DATA_SENT
notifyResponse AVAILABLE_RESPONSE on channel 8
Channel 8 DATA_SENT -> AVAILABLE
Channel 8 AVAILABLE -> REQUEST_SENT
notifyResponse ACK_RESPONSE on channel 8
Channel 8 REQUEST_SENT -> ACKNOWLEDGED
Channel 8 ACKNOWLEDGED -> DATA_SENT
notifyResponse AVAILABLE_RESPONSE on channel 8
Channel 8 DATA_SENT -> AVAILABLE
Channel 8 AVAILABLE -> REQUEST_SENT
notifyResponse ACK_RESPONSE on channel 8
Channel 8 REQUEST_SENT -> ACKNOWLEDGED
Channel 8 ACKNOWLEDGED -> DATA_SENT
notifyResponse AVAILABLE_RESPONSE on channel 8
Channel 8 DATA_SENT -> AVAILABLE
Channel 8 AVAILABLE -> REQUEST_SENT
notifyResponse ACK_RESPONSE on channel 8
Channel 8 REQUEST_SENT -> ACKNOWLEDGED
Channel 8 ACKNOWLEDGED -> DATA_SENT
notifyResponse AVAILABLE_RESPONSE on channel 8
Channel 8 DATA_SENT -> AVAILABLE
Channel 8 AVAILABLE -> REQUEST_SENT
notifyResponse ACK_RESPONSE on channel 8
Channel 8 REQUEST_SENT -> ACKNOWLEDGED
Channel 8 ACKNOWLEDGED -> DATA_SENT
notifyResponse AVAILABLE_RESPONSE on channel 8
Channel 8 DATA_SENT -> AVAILABLE
Channel 8 AVAILABLE -> REQUEST_SENT
notifyResponse ACK_RESPONSE on channel 8
Channel 8 REQUEST_SENT -> ACKNOWLEDGED
Channel 8 ACKNOWLEDGED -> DATA_SENT
notifyResponse AVAILABLE_RESPONSE on channel 8
Channel 8 DATA_SENT -> AVAILABLE
I don't know if this matter but my java version is:
java version "1.8.0_31"
Java(TM) SE Runtime Environment (build 1.8.0_31-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.31-b07, mixed mode)
Any ideas or am I missing something completely?
Thanks
Andy

Hi, Andy. Please excuse my ignorance, I am very new at this ME embedded stuff. I had my challenges, but was finally able to get my board up with a static address. I went through a lot of headaches, but finally got the board flashed with the latest bin. I then updated the jwc_properties.ini file on the SD card to include:
# Whether static configuration or DHCP server is used do get IP address. Possible values: dhcp,static
ip.method = static
# IP address,used with static IP configuration only
ip.addr = 192.168.0.30
# Network mask,used with static IP configuration only
ip.netmask = 255.255.255.0
# Network gateway,used with static IP configuration only
ip.gateway = 192.168.0.1
# DNS server,used with static IP configuration only
ip.dns = 208.67.222.222
# MAC address
mac.addr = 01:02:03:04:05:06
I was then put the card into the board, disconnected both USB cables, and then powered it up. From that point I was able to ping the board. I can now use Device Manager in NetBeans to connect to the device.
I am struggling quite a bit with many issues. It seems that when I try to stop the app from NetBeans, the "please wait" dialog hangs forever. I have to use Windows Task Manager to kill the "JavaW" process tree and reconnect the board.
I have also had trouble understanding the GPIO pin assignments. Another gotcha was trying to use the AutoStart feature. Since the sample app never cleanly exited, I thought that I bricked the board. The secret is to power it down, remove the SD card, and then delete all files EXCEPT the jwc_properties.ini file, put the SD card back in, then power up. It seems that the board forgets that the MIDlet was installed.
Hope this helps others out there.
Please everybody, post your experiences here. There seem to be very few of us, and finding pearls in the dust is rare right now.
Regards,
Pete

Network setup 'DHCP with manual address' changes to 'Using DHCP'

I have setup my local network with a manual address and have observed that the setting changes without my doing to simply Using DHCP. I can't get the setup to continue using a manually assigned ip address. Even though I've saved the network settings preferences, they revert to 'Using DHCP'. Any ideas? Thanks in advance.

If you "have setup (your) local network with a manual address," does that mean you have disabled DHCP in your router? If so, then you'd want to configure "manually" in your Sys Prefs > Network.
Or did you mean that you have setup a computer on your local network with a manual address using DHCP? (And that your router has DHCP enabled?)
If the router's DHCP is enabled, many routers will allow you to set aside a subset of IP addresses to the DHCP pool, and the remainder are, by definition, reserved for static addressing. Are you assigning the computer requiring a static IPA (but using DHCP defined gateway and subnet) an address falling within the static address range of your local subnet?
If you can't partition the address space between static IP addresses and DHCP-assigned IP addresses when DHCP is enabled, are you assigning a high-numbered IP address to the computer whose Sys Prefs has DHCP with manual address?

DHCP server does not assign IP addresses SG500 firmware 1.3.5

good day collegues
has any of you come across the following issue:
my switch (after upgrading to the newest firmware 1.3.5) does not assign IP addresses to some of the hosts.
after a couple of hours I managed (do not even how) to force my switch to assign IP addresses only to some of the hosts.
still some of them cannot get the IP address and remain with "funny" IP address like i.e. 169.254.100.100
additional info
1. if I boot my switch with the previous version of firmware (1.3.0.6) everything is OK. all my hosts get correct IP addresess
2. the hosts which do not get IP address were perviously entered in stat host table - now removed, ARP cleared, etc, everything many many times rebooted.
I ran out of ideas, could you pleae give me some hints ?
the config below:
config-file-header
SG500
v1.3.5.58 / R750_NIK_1_35_647_358
CLI v1.0
set system mode router queues-mode 4
file SSD indicator encrypted
ssd-control-start
ssd config
ssd file passphrase control unrestricted
no ssd file integrity control
ssd-control-end zzz
no spanning-tree
vlan database
vlan 11,13-14
exit
voice vlan oui-table add 0001e3 Siemens_AG_phone________
voice vlan oui-table add 00036b Cisco_phone_____________
voice vlan oui-table add 00096e Avaya___________________
voice vlan oui-table add 000fe2 H3C_Aolynk______________
voice vlan oui-table add 0060b9 Philips_and_NEC_AG_phone
voice vlan oui-table add 00d01e Pingtel_phone___________
voice vlan oui-table add 00e075 Polycom/Veritel_phone___
voice vlan oui-table add 00e0bb 3Com_phone______________
no ip dhcp snooping verify
ip dhcp snooping information option allowed-untrusted
ip dhcp snooping vlan 11
ip dhcp snooping vlan 13
ip dhcp snooping vlan 14
ip arp inspection logging interval infinite
green-ethernet energy-detect
no eee enable
arp timeout 1
ip dhcp server
ip dhcp pool host q409
address 10.10.11.2 255.255.255.0 client-identifier 01:00:08:9b:ac:8f:92
default-router 10.10.11.254
dns-server 10.10.10.1
exit
ip dhcp pool host PCH-100
address 10.10.11.10 255.255.255.0 client-identifier 01:00:06:dc:41:ef:ef
default-router 10.10.11.254
dns-server 10.10.10.1
exit
ip dhcp pool host q209
address 10.10.13.3 255.255.255.0 client-identifier 01:00:08:9b:ac:72:ba
client-name q209
default-router 10.10.13.254
dns-server 8.8.8.8
exit
exit
ip dhcp pool network HOME
address low 10.10.11.1 high 10.10.11.254 255.255.255.0
lease infinite
default-router 10.10.11.254
dns-server 10.10.10.1
exit
ip dhcp pool network GUESTS
address low 10.10.14.1 high 10.10.14.254 255.255.255.0
lease infinite
netbios-node-type b-node
default-router 10.10.14.254
dns-server 10.10.10.1 62.233.233.233
exit
ip dhcp relay address 10.10.10.1
ip dhcp relay address 10.10.11.254
ip dhcp relay address 10.10.13.254
ip dhcp relay address 10.10.14.254
no boot host auto-config
no qos
qos advanced-mode trust dscp
qos wrr-queue wrtd
exit
hostname SG500
line telnet
exec-timeout 0
exit
logging buffered debugging
no logging file
aaa authentication login Telnet local
aaa authentication enable Telnet enable
aaa authentication dot1x default none
line telnet
login authentication Telnet
enable authentication Telnet
password 999 encrypted
exit
no passwords complexity enable
passwords aging 0
username 999 password encrypted 999 privilege 15
ip http timeout-policy 0 http-only
clock timezone " " 1
clock summer-time web recurring eu
clock source sntp
clock source browser
sntp unicast client enable
clock dhcp timezone
ip domain name 999
ip name-server 10.10.10.1 62.233.233.233 8.8.8.8
ip host 999 10.10.13.3
ip telnet server
no service mirror-configuration
no security-suite deny syn-fin
security-suite syn protection mode disabled
interface vlan 1
ip address 10.10.10.254 255.255.255.0
no ip address dhcp
interface vlan 11
name HOME
ip address 10.10.11.254 255.255.255.0
ip dhcp relay enable
interface vlan 13
name DMZ
ip address 10.10.13.254 255.255.255.0
ip dhcp relay enable
interface vlan 14
name GUESTS
ip address 10.10.14.254 255.255.255.0
ip dhcp relay enable
interface gigabitethernet1/10
description "(99) QNAP 409"
switchport trunk native vlan 11
exit
macro auto disabled
macro auto processing type host enabled
macro auto processing type ip_phone disabled
macro auto processing type ip_phone_desktop disabled
macro auto processing type router enabled
mac address-table aging-time 10
ip default-gateway 10.10.10.1
snmp-server set 999 permit

Hi Andbor, please make a backup config of your file, factory reset the switch.
After this, manually configure a DHCP scope without any other configuration.
Just something simple like this
ip dhcp pool network GUESTS
address low 10.10.14.1 high 10.10.14.254 255.255.255.0
lease infinite
netbios-node-type b-node
default-router 10.10.14.254
dns-server 10.10.10.1 62.233.233.233
Verify your machine receive IP address with no other configuration.
In some ways, I'm afraid some of your connections black listed due to the arp inspection.
-Tom
Please mark answered for helpful posts

802.1x and DHCP assigned addresses

I've done a lot of reading on this but I am still confused. I'm not a Microsoft guru so I don't really know waht is going on with login scripts, or cached user/pass.
Scenario 1
==========
I have 802.1x implemented and Joe the contractor comes into the office and plugs in his laptop. He is a guest. I allow guests to have access to a guest VLAN. How can Joe automatically get an IP address, or does he have to do ipconfig /renew?
Scenario 2
==========
What is the behind the scenes process that takes place for my corporate users that login to a domain....how do they get DHCP assigned addresses?
Thanks

I assume from what you have written 'Joe' doesn't have an 802.1x supplicant on his PC? Therefore the switchport eapol frames are ignored by the PC and after a timeout the port is placed in the guest vlan. You need to make sure DHCP is enabled for the guest vlan - either add the appropriate entried to the protecting ACL or add a scope on the router? Depending on the timeouts you may have some delay issues here; I would test this before you roll it out.
For clients with 802.1x supplicants what happens is the PC effectively thinks it is disconnected from the network until the supplicant has authenticated. Once it has authenticated the PC thinks the network adapter is then connected and it will attempt to lease an IP address by broadcasting a DHCP request.
There are however a few 802.1x supplicants and I am not sure how they all integrate with the host O/S. I know the built-in Microsoft one operates as I have described.
HTH
Andy

Suse 9 oracle 10g installation DHCP-assigned public IP addresses problem

Hi,
I got below error when I have tried to install Oracle 10gR2.
I have checked # hostname, it is Ok. I setup network to use static Ip.
I checked /etc/hosts. Does oracle get hostname another file?
How can I solve my problem.
Thanks.
Recommendation: Oracle supports installations on systems with
DHCP-assigned public IP addresses. However, the primary network
interface on the system should be configured with a static IP
address in order for the Oracle Software to function properly.
See the Installation Guide for more details on installing the
software on systems configured with DHCP.

Hostname command should return the fully qualified hostname as shown below:
% hostname
hostname.domainname

DHCP assign address range to AD computer groups - possible?

Not by OU, no. DHCP doesn't interrogate AD.

Hello
Does anyone know if it's possible to get the Windows DHCP server to assign an address range to a group of computers in Active Directory? Is it possible?
This topic first appeared in the Spiceworks Community

How to set up both static and DHCP assigned addresses on an AirPort Extreme

I recently bought an AirPort Extreme to replace my failed Cisco/Linksys router.
I am having trouble figuring out how I can configure the Extreme to support the already static IP addresses on my network as well as assign IP addresses via DHCP to a few devices where static IPs are not supported, i.e., work laptop.
Additionally, when DHCP is turned on, are my only options the 10.0, 172.16, and 192.168? What if I am running something like 10.10 or 172.30?
I am far from green when setting up computer networks, but this AirPort Extreme is making me pull my hair out.
BTW, I have access to a number of computers running a number of OSes including Windows XP, 7, and 8, as well as Mac OS X Snow Leopard and Mountain Lion.
The Mountain Lion or Windows 7 machine would be the preferred ones to configure the Extreme. I already have the AirPort Utility software running on them.
Any help would be appreciated.

I have found the 'DHCP Reservations' option on the AirPort Extreme to be buggy. I seem to remember it causing IP conflicts for some reason. I think what I remember is that if the computer with the reservation was off, and the DHCP server then handed out that IP to another DHCP client, then there would be a conflict when the reserved IP computer was turned back on. Maybe it was an issue in ealier versions of the AE or OS X as the case may be, and maybe it's been corrected, but I've never bothered using it agian since the method I describe below has always worked without fail. Also, I'm guessing DHCP Reservations would work fine if one manually enters IPs outside of the DHCP range but in the AE 'DHCP Reservation Setup Assistant' the IP options provided are within the DHCP range which to me makes no sense and increases the potential for IP conflicts.
Here's what I do to setup a mixed environment of static and dynamic IPs on my network. It works like a charm and does not require the DHCP server (beyond the distribution of dynamic IPs to hosts using DHCP).
For machines on my network that are accepting services from the public network, I set them up with static IPs using the 'Manually' option (System Preferences/Network/Ethernet/Configure IPv4). The settings for 'Router' IP address and 'DNS Server' IP address should both be set with your gateway/router LAN IP). Use an IP address below or above the DHCP range of adresses (in AE/Internet/DHCP/DHCP Beginning & Ending Address).
i.e. if my subnet is 10.0.1.1 and my DHCP range is 10.0.1.100 to 10.0.1.150, you could set the static IPs on your local hosts as 10.0.1.x where x = any number from 2 - 99 or from 151 - 200 as an example.
All other machines and devices that do not require static routing are setup as DHCP clients and get a dynamic IP from the AE. To me it's a simpler setup though it might take a little extra time to setup initially.
John

Airport Extreme wired network can't assign IP address, but wireless works

*Problem details:*
We have three computers intermittently on, wired into the ethernet LAN managed by the Airport Extreme.
We have a few more computers that connect to the wireless network managed by the same Airport Extreme.
As far as I know, no fancy settings hijinks have been attempted. I manage the router, and I only plugged the Airport into the cable modem and connected all the wires to the computers. The WiFi setup went a similar way -- I just turned it on and it sorted itself out. This was eight months ago, mind you -- everything has been going quite well up until this weekend.
But! I got home from a trip this weekend to discover that all the machines that connected over the wired network could no longer get a connection to the internet. Any machine connected over the wireless network, however, was working just fine. Indeed, my macbook pros couldn't even see the Airport Extreme when I turned off their WiFi, connected them over Ethernet and opened the Airport Extreme configuration app!
The wired machines complain that they have a self-assigned IP address. Sometimes, after resetting everything, they look like everything's fine for a moment. Like I said, ordinarily my macbook pro does not even recognize the router over the wired network. However, after reverting to factory defaults and restarting the Airport, the laptop did see it (until a few minutes went by and it realized something was wrong).
I figured that renewing my DHCP lease would fix this problem, but it did not. Nor did turning off Passive FTP Mode (PASV) under Proxies in the Network configuration pane.
I have tried resetting the router to factory defaults, power cycling the modem and router in various configurations, etc. but nothing has worked. In addition, I have verified that connecting any machine to the ethernet directly from the modem will work, so the problem is definitely being introduced by the Airport Extreme.
So I guess my question is: what do I have to poke to return everything to normal? I'd like working wired and wireless networks again.
*Some last few details:*
The Airport is running 7.5.2, but downgrading to 7.4.2 produced no tangible difference.
I have an Ubee D3.0 modem. All lights are green and blinky except the DS light, which is solid amber (and it is green when the modem is wired directly to one of my computers -- it's only amber when connected to the Airport).
Some of the machines that can't connect to the wired network are PCs, so it's not just an OSX thing.
My roommate's XBOX 360 can connect to the internet over the wired port. It doesn't have WiFi, so I'm pretty sure there's no way it could be fooling me.
Thanks in advance for any advice you can muster.
EDIT FOR APOLOGIES:
I didn't realize I was posting this in the "Airport for Windows" section. While a Windows computer's connection is a concern, I would much rather get my Macs online and deal with that first. I can't figure out how to move the message myself.

*An update:*
Several days later, this issue seems to have fixed itself. I suspect there may have been Funny Business on my ISP's end (but then again, it's an ISP).

Self Assigned IP Address with Airport Extreme

I just changed my router from an Asus to AIrport Extreme.   The Airport Extreme is connected to an ATT DSL modem. I know the modem works because I can connect to the internet when I connect it directly to my IMac. However, when I try to access the internet through the airport extreme it connects temporarily and then loses the connection. It tells me that I have a self assigned IP address and cannot connect to the network. This is the case through both Ethernet and WiFi. It is also the case when I try it with other devices (e.g. IPad, MacBook).
I know there are lots and lots of threads in this forum (and others) on this topic. I have been pouring over them for days and trying everything I could find including but not limited to--
Rebooting/power cycling
Keychain clearing and repairing
Renewing DHCP lease
Turning off firewall and virus barrier
deleting and recreating network
The modem is set up based on the ATT instructions for when it is to be connected to a non ATT router, thus it is in Bridge mode and the Airport Express is set to use PPPoE.   OS and all firmware is up to date.
There is another issue which may or may not be related. It is also an issue for which there are many existing threads (but apparently no definitive solution). My Imac keeps giving me a message that the name of my computer is already in use and has been changed to.....
http://https://discussions.apple.com/thread/4207056?start=0&tstart=0
I have tried several suggested solutions (e.g. energy savings pref, using only wifi or only ethernet to connect). So far no luck.
Both of these issues seem to have started when I switched routers.
Anyone know if the two issues are related? And whether there is a solution? Seems like both issues have been around a long time.......

Was using the wrong password option in UIXperts driver. Kept thinking it was a different protection mechanism than it was. Once the password was set, all was well. Referred back to the IOXperts installation guide (RTFM) for a clue.

"self-assigned' IP address.

Firstly to be semantic. Part of my frustration at this problem is the fact that Apple call this a "self-assigned" IP address. In no way have I assigned this IP address myself. My Macbook Pro assigned it for me.
I have had this problem intermittently since I bought my Macbook Pro years ago. The first time I found a solution by renewing my DHCP lease and sometimes that would work, sometimes not.
Second fix is a reboot, third fix is to make airport inactive and then re activate it again, fourth fix is to add new location from system preferences and then start from fix number one again
I have also tried various commands suggested for terminal and tried deleting folders that have been suggested as the cause.
But now returning from a trip overseas I get the "self [apple] - assigned IP address" message and none of the fixes that I have wasted my time applying in the past are working.
It's almost comical because just a week ago I was saying to somone how I was thinking of moving to PC as I had had enough of trying to fix problems with my Mac.
Hours of trawling the internet for a simple walk through of the problem suggests anything beyond what I have already tried. I can't believe I have put up with this issue for so many years, just accepting that it's a small problem that occaisionally interupts the massive benefits of using a Mac.
So if anyone has a final suggestion of where to go to fix the problem [on line] I would be so releived of my frustrations. If not then I am heading out to buy a PC tomorrow and I will take great pleasure in destroying my Macbook Pro.

I have a little Macbook that connects to my wifi connection automatically without any problems and always has.
I have a much more expensive, much more powerful 2010 Mac Pro Quad Core which is totally incapable of jumping on to the same Wifi Connection. Even if both devices are right next to one another.
Of course, I have the usual 'Self Assigned IP' problem, and like you, I have trawled the internet endlessly following all sorts of guides, all sorts of DHCP Renewal methods and all sorts of manual methods and all sorts of Firewall settings etc etc etc.
In the end up, none of it ever works. Except for the very rare occasionally day I'll turn the Mac Pro on and it will have randomly decided to connect to the WIFI connection and work fine.
I gave up trying to figure it out. I can no longer connect to the internet so my Mac Pro has to live with no important updates etc. Not very future proof at all and extremely frustrating.
I run a busy recording studio so its solely the fault of this problem that I struggle to be as competitive as my rival studios as I can not preform the simple Audio software updates everyone else can. Brilliant.
INFURIATING.

Self assigned IP Address, wireless doesn't work

After upgrading to Leopard I keep getting "AirPort has a self-assigned IP address and may not be able to connect to the Internet." when I try to connect to the wireless network. Thus, wifi does not work at all. I've researched it best I can and it seems to be a problem with the router assigning an IP address to the mac, but why didn't this happen in Tiger? However if I play around with it for awhile it will randomly start working, but the same method doesn't fix it everytime. It also works fine in bootcamp. If I physically plug into the router, it works fine. This problem didn't exist in Tiger at all.
Message was edited by: SuperDupe453

Follow-up:
On the two laptops, I finally managed to get on line by switching to a different wireless access point, on a different modem. I surmise that the communication between the Macbook DHCP client and the modem/router's DHCP server is less than 100% effective. Looking at the modem/router, I could see that all of the Macs had active connections. But, instead of showing the names of the Macs, the page showed a star (*) for each Mac. I had to compare Mac addresses to verify the connections. The MAC address, of course, is hard-wired into the computer's network interface. It appears that either the DHCP client didn't know what question to ask when it broadcast for an IP address, or it couldn't interpret the answer. Except in the case of the iMac, which worked perfectly.
I upgraded the MacPro last, since it is my primary machine. Same story--connection with self-assigned address, which is useless. However, this time, having nothing left to lose, I restarted the modem/router, which presumably dumped any inactive connections and issued new DHCP leases.
However, I do have a few words for the Apple GENIUSES! The Leopard network preferences page puts me in mind of a maintenance free battery. A few of the older folks will remember when you bought a car battery that had to be filled with distilled water to reconstitute the electrolyte. Then, periodically, you check the level of the liquid in the battery, and added distilled water when required. Adding water was required on occasion because some of the water would boil off under certain conditions. Then, we got the maintenance free battery, which is virtually identical to the older battery design, except that you don't have to perform the maintenance of replenishing the water. It turns out, however, that maintenance free batteries do vent on occasion, and should have water added. But, you can't add water because the battery is sealed. So, the difference between conventional and maintenance free is not that the maintenance free battery doesn't need maintenance, it is that you can't perform the maintenance without voiding the warranty.
The Leopard network preference page won't let you set the parameters that could restore a connection. If the DHCP client doesn't work automatically, you're stuck.

Can't get rid of self assigned IP address

Hello,
I have been trying to resolve this problem by myself for the last 4 days (by googling and reading forums) but nothing works so here I am.
I moved last Tuesday and everything worked fine until that day. Since I am in my new apartment, I can't connect to the Internet because of a self assigned IP address. Here is more info:
-I have a new modem since I moved (the apartment where I was living was furnished and had a modem already). However, I am using the same service provider and modem than the apartment I was subletting.
-I only have a modem (no router) and I use the Ethernet to connect.
-I am writing this message from a PC laptop which confirms that the modem is working fine and that the ethernet cable is fine, etc.
-I did many rounds of shutting down the computer, renew DHCP, unplugging the modem (from 1 minute to 10 hours) and plugging everything back.
-I called the ISP but they could not help (they just repeated the same instructions that I could find in the guide)...They have no idea how I can get rid of the self assigned IP address.
The problem is still the same, I can't get rid of the self assigned IP address (169.xxx).
Please help if you know other tricks to fix that issue...
Thanks a LOT in advance!!
Julie

Re 1) Setting up a new account won't solve the problem in itself but it will help narrow down the cause. The idea is this: the problem might be caused by something system-wide (e.g. a preference file in /Library/Preferences) or it might be caused by something that is specific to your account (e.g. a preference file in yourhome/Library/Preferences). If we knew which, we could target the troubleshooting appropriately. The easiest way to figure out which is to create a new user, log in as that user and see if the problem remains. If it does, it must be system-wide; if not, it is specific to your account.
Are you using any firewall software? If you are using Tiger's built-in firewall, how is it configured?
- cfr

CAN'T CONNECT-self-assigned IP address

I haven't been able to connect to any networks for days. I keep getting this message in my network control panel under "status":
airport is connected to the network ABC. airport has a self-assigned IP address and may not be able to connect to the internet.
When I start getting this message, it happens to several different networks at once and on 2 different computers. What does this message even mean? That I'm out of reach or that I'm being intentionally blocked?

Ok, I have the fix!! After several frustrating days it finally just works.
The process:
Upgrade your Macs to 10.6 (Snow Leopard)
Powercycle your modem AND time capsule / airport TWICE
Reset your time capsule with a pin or paperclip on the back
Follow the prompts to setup your time capsule / airport access
-- On your Macs
Go to System Preferences > Network > Airport > Advanced > TCP/IP
Click "Renew DHCP Lease" then click "Ok"
Click Apply
Turn off Airport
Turn Airport on
IT WORKS!!!
One of the magical people at tech support walked me through it earlier today. The whole process took about 1.5 hrs because Show Leopard takes about an hour to install on one machine.
Hope this helps-
Joshua

Ethernet cord has a self assigned IP address, can this be changed?

I am trying to connect my laptop to my Xbox 360 so I can get on Xbox Live using my computers wireless as a gateway... but the ethernet cord has a self assigned IP address and won't work.. I've tried everything to change it and it still won't connect with my router. It is a cisco router.

Welcome to Apple Support Communities
You stand a better chance of a connection if you set the Ethernet interface to DHCP and have it be assigned an IP number by the Router ...

DHCP assigning IP address

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