DHCP or Static?

Few days ago i used a static ip address in my school and now i don't know if I'm using static or DHCP (at home). How can I know which one im using? And how can i change back to DHCP from Static IP?

Go to System Preferences > Network > Highlight the service on the left > Advanced... button > TCP/IP tab.
Regards,
Captfred

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Bought a new Ipod touch and the WiFi does not connect. Tried Reset and total Restore, does not connect to Router on DHCP, tried Static manually and still can not get it to connect even though it registers as connected.

Bought a new Ipod touch and the WiFi does not connect. Tried Reset and total Restore, does not connect to Router on DHCP, tried Static IP, Subnet, Router and DNS manually and still can not get it to connect even though it registers as connected. Using Airport for router, latest firmware, no problems with Iphone 4 or Macbook Pro or any other internet devices. After total Restore (factory settings) tried again, showed connected to router, but does not display "check" next to router but little rotating icon even though the wifi range signal shows connected at full strength and it says it is connected. Just can't seem to get it to generate an IP. Any solutions other than turning it on and off again? Not a Merry Christmas morning.

Ok, so, a couple of things: Denisefromwaleska and I have the exact same size/type/color iPod. Now wishing I'd bought the black one maybe...
Second, Airport is an Express and I have a second one that I carry with me when I travel. Tried to connect my Airport Express to the internet and could not although the iPod did recognize the router and tried to connect to the internet for some time, unlike my previous problem. Updated firmware on my travel router, still could not connect to the internet. Going to try to set up a manual Static IP on the travel router here in a few and conect through it although I predict the problem will persist. Back on the Christmas Present Airport Express router, it is back in play and working fine for all devices save the iPod.
Thanks again for all your help, hopefully I can get a solution in place soon,

Iam using I phone 4s I want connect the wi fi. But once I entered the wifi password , it's showing dhcp boot static what I want to do

Iam using I phone 4s I want connect the wi fi. But once I entered the wifi password , it's showing dhcp boot static what I want to do

If your Wi-Fi router's DHCP is working, on iPhone select DHCP that's it.

Bug or feature? - DHCP with static entries gives "wrong" DNS?

Server 10.4.8 G4 Xserve
Bonded interface (built-in and PCI, LACP)
DHCP, DNS and "more" running.
DHCP static IP entry (?) windows (and mac?) machines get their DNS IP from the server DNS setting from Network config, not from DHCP config ???
Machines with no static entry get the DNS IP from the DHCP server setting.
If you use 127.0.0.1 as the nameserver setting in Network config the static clients obviuosly can't lookup names. I had to use the "hostname IP" instead.

Hi,
I did not quiet understand what you mean. It looks completely visible for me.
You did not set scene width and height so maybe that is reason why it was not visible.
This code works for me:
package playground;
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.effect.Reflection;
import javafx.scene.layout.BorderPane;
import javafx.scene.text.Font;
import javafx.stage.Stage;
public class LayoutLabel extends Application {
    @Override
    public void start(Stage stage) throws Exception {
        stage.setTitle("Test JFX");
        stage.setScene(createScene());
        stage.setVisible(true);
    private Scene createScene() {
        Label label = new Label("Hello world!");
        label.setFont(new Font(24));
        Reflection reflection = new Reflection();
        reflection.setFraction(1.0);
        reflection.setBottomOpacity(1.0);
        reflection.setTopOffset(0.0);
        label.setEffect(reflection);
//        Group pane = new Group();
        BorderPane pane = new BorderPane();
        pane.setCenter(label);
//        pane.setTop(label);
//        pane.setBottom(label);
//        Pane pane = new StackPane();
//        Pane pane = new FlowPane();
//        Pane pane = new HBox();
//        pane.getChildren().add(label);
        Scene scene = new Scene(pane, 200,200); // changes to 200 200 maybe that is reason why it does not show
        return scene;
    public static void main(String[] args) {
        Application.launch(args);
}

Combined dhcp and static ip?

I'd like to be able to specify a static ip address and get the remaining stuff (dns, gateway, and whatever) from dhcp. It this possible?

lumpynose wrote:
wudu wrote:
I know that there is an option for network-manager to get only the addres from DHCP but I think there's nothing for what you want.
I'm not sure what you want to do. Do you have changing DNS servers and gateways?
If you have control over the DHCP server you could do that by static DHCP (your pc gets the same address every time based on the MAC address). If the DHCP server is running on a router you often don't have this as option (directly).
Other possibility is to get everything from DHCP and then change your IP address manually or with a script.
Changing the ip address afterwards is an idea. I've been with my ISP for a long time and they have changed the addresses of the DNS servers.
Being able to specify just a static network interface address seems like a useful thing to me in a home environment; I want a static address so I can easily ssh to the machine, and the other stuff, DNS, gateway, etc. I can let DHCP set up.
Are you saying that you want to set a static Public IP address on the interface that connects to your home ISP? Like, your ISP changes your public IP address which makes it hard to ssh back home.
If this is the problem you are trying to solve, you would be better off just buying like a .info domain for $2 and setting up Dynamic DNS. I find Hurricane Electric to be a good DNS host. They will let you add Dynamic A records. Then you just set a cron job to update the dns records like every 30min's to be sure it is always correct.
With this promo code from the Linux Action Show you will save 35% off your order of the domain.
http://www.godaddy.com/?isc=go35off3
Free DNS host (these guys are a global Internet backbone provider)
https://dns.he.net
Last edited by hunterthomson (2013-03-24 11:00:37)

DHCP and Static

We have a WRT55AG wireless router. Connected with a static IP address. Set up to give out DHCP to wireless users and to one desktop machine that is connected to port 1. We have another machine, which we want tio run on a static IP address. Is this possible? Thanks. David Passmore

Their is no settings required on the router side.
If all your other computer are able to go onlinr then this one will to go using a static ipaddr.
The first thing you will do is go to the computer which is able to g online.
Click on start then run then type in cmd and hit enter.
On the cmd prompt type ipconfig/all and hit enter
and check out the ipaddr
if it 192.168.1.100 then on the static computer you will type in 192.168.1.50
in the same manner if it is 192.168.2.100 then on the static computer will be 192.168.2.50 and rest of the entery just copy it all will work grt
Thanks
Frajo

DHCP/Subnets/Static Maps setup question

We have a unique teaching environment where we would like both employees (with laptops) and clients to be able to plug into any ethernet port in the building or be wireless. My question is, what is the best way to set things up so that employees always get the same ip and have access to the full range of services (file services, LDAP, Internet) but customers only have access to the Internet but not internal services. I have tried using static maps for employees but for some reason, customers sometimes end up getting one of the static maps intended for employees (and I have verified that all the MAC addresses are entered correctly). I am pretty new to Tiger server so any help is greatly appreciated.

If im not mistaking your DHCP settings are overlapping with the ips you have statically assigned. To fix this reserve say 192.168.1.1-127 for static ips and let dhcp use the remainder.

[SOLVED] Help with going from dhcp to static ip

So right now I'm using dhcp on my arch box, but for personal reasons (file server, print server, etc...) I'd like to assign a static ip to the machine.
I've noticed that when I get a ip via dhcp, there are different broadcast ips, and frankly, I'm just getting confused. I was wondering if there was a way (probably) to setup a static ip from setting that are retrieved via dhcp.
I know that there's a wiki page as to how to set up a static ip, but there are still some things that I don't understand, so I'd like to know what information I'd need to get from dhcp in order to set up a static ip (essentially the same ip, but it would remain the same)
I will blatantly admit that networking is not one of my strong suites...
Last edited by ZeroTruths (2009-09-03 01:20:29)

When you have a dhcp address, use ifconfig to identify the address, broadcast address, and subnet mask, and use route to identify your default gateway. All these should be added to the rc.conf NETWORKING section - an example is provided. Make a note of the nameserver address that was automatically added to /etc/resolv.conf under dhcp - it should remain there.
Before you do all that, you may have the option of using a dhcp fixed lease instead i.e. continue to use dhcp, but configure it to provide the same address to your arch box every time. That would depend on the capabilities of the system that provides the dhcp service.

EA6700 DHCP Reservation (Static DHCP) limit

Hi,
just got an EA6700. Setup was the most difficult I've ever experienced in many years of Wifi/router config. I almost packed it back up to return it. The cloud thing is absurd. Using CAPTCHA that does not even display the CAPTCHA image is even worse.
Alright, I succeeded in using the local admin login and set up the router. Actually the plan was to have it just be a wireless access point, using my Cisco RV042 as the router and DHCP server. Well that 'dream' was squashed right quick. That **bleep** RV042 blew up when I added one more Static DHCP entry. Poof. 'No more SYSTEM' errors in a few spots. On reboot the darn thing does not come back up. This after the RV042 needed to be reset after I used a quote or some other 'illegal' character in a static DHCP entry. What a piece of amateur junk.
So. Tomorrow I will reset the RV042 again and relegate it to just doing WAN failover, nothing more. The EA6700 will be the router and DHCP server. So my question (sorry for the ranting) is how many DHCP reservations the EA6700 can handle. I'll probably need 75. I assign DHCP reservations for LAN stability and to prevent IP address collisions.
Please note that I'm not talking about static IP addresses. I have a few of those too but I know they are different from DHCP reservations.
Thanks,
Sander

It's highly unlikely the EA6700 can handle 70+ DHCP reservations. But I don't know for sure.
My advice is to go back to plan A and use EA6700 as AP.
Configure it for bridge mode. Be sure to "specify and IP address". Don't use "obtain IP address automatically" when configuring bridge mode.
http://kb.linksys.com/Linksys/ukp.aspx?pid=94&vw=1&articleid=25714
Edit: don't configure ea6700 for bridge mode while it's connected to your main router. You've probably noticed by now that the EA routers will automatically change their IP to 10.x.x.x if they detect a double NAT. Which I why I suggest keeping it disconnected from main router when configuring.

Change from dhcp to static

i set up a mac mini server running latest 10.6 server software dhcp. it now needs static addressing as the whole network is getting revamped. is it true you need to do this via terminal only as other things can break? can someone please give me the networksetup syntax to change all fields ip subnet etc?

No, its not true that you can only do this via terminal, but there is a terminal command that goes through and updates the configuration in multiple places that you might forget to do manually, so it makes it easier.
Don't be afraid of the terminal. The command is just:
sudo changeip <directory> <current_ip> <new_ip> <current_hostname> <new_hostname>
Where <directory> is the address of the directory server. If this machine is the directory server just use '/LDAPv3/127.0.0.1' (although you'll have a bigger problem re-mapping all your clients to the new address).
<current_ip> is the machine's current (DHCP) IP address
<new_ip> is the new (static) address you're changing to.
<current_hostname> is the machine's current hostname
<new_hostname> is the new hostname for the machine
(the last two options can be omitted if you're not changing the machines hostname).

Ipv4 from dhcp, ipv6 static on single interface eth0

Hi,
pls help me understand or solve my problem with my network setup.
I had ipv4 ip address assigned dynamically and ipv6 set statically, both via netcfg and everything worked without problem.
This is my netcfg config:
CONNECTION='ethernet'
DESCRIPTION='A basic dhcp ethernet connection using iproute'
INTERFACE='eth0'
IP='dhcp'
PRE_UP='ethtool -s eth0 wol g'
PRE_DOWN='ethtool -s eth0 wol g'
## for IPv6 autoconfiguration
#IP6='stateless'
## for DHCPv6
IP6='static'
ADDR6=(2002:54f2:xxxx:1::2/64)
GATEWAY6=2002:54f2:xxxx:1::1
But someday I received error when booting up and also when I try to start profile manualy:
/etc/rc.d/net-profiles start
:: eth0 up
RTNETLINK answers: File exists
Adding gateway 2002:54f2:xxxx:1::1 failed
No profile started.
I found that I can't have two gateways on one interface, but until now there's no problem.
When I disabled GATEWAY6 line from config, eth0 profile can be started but ipv6 connectivity didn't works.
I tried set ipv6 to stateless that works, but after some time not more that 5min network connection resets and after recovery in couple of seconds only ipv4 works.
Where's a problem? What can I do to achieve same setup I had before some update last week?
Thanks

houmles wrote:I found that I can't have two gateways on one interface, but until now there's no problem.
I suspect it's a problem with that; I've noticed this problem as well.
When trying to add multiple default gateways with iproute2 (ie, `ip r a default via xxx:xxx:xxx::xxxx`) it errors with the error you've mentioned. I'm not sure if this is a kernel bug, iproute2 bug, or not a bug at all.
Having multiple default IPv4 gateways works fine.
I believe netcfg doesn't check for an existing gateway and delete it first (or use `ip r r` instead or `ip r a`) before adding the one; but I haven't checked the code so I could be wrong.
EDIT:
OK, I couldn't resist looking at the code, and it indeed does a 'dumb' addition of the gateway:
112 if [[ -n "$GATEWAY" ]]; then
113 report_debug ethernet_iproute_up ip route add default via "$GATEWAY" dev "$INTERFACE"
114 if ! ip route add default via "$GATEWAY" dev "$INTERFACE"; then
115 report_iproute "Adding gateway $GATEWAY failed"
116 fi
117 fi
I'm looking at making a patch now. Patch and bug report: https://bugs.archlinux.org/task/29480
Last edited by fukawi2 (2012-04-16 01:00:09)

54GS ver2 DHCP and static Denon AVR IP

I have a WRT54GS ver2...older model. Some models have DHCP Reservation that allows the same IP to be reestablished with the connected wireless device. This model does not have that....wish it did. I need to get the same IP with my Denon AVR (audo video receiver) each time.
Ok, So my 54GS is setup for DHCP 192.168.1.100 with 7 connections. Only using 5 of these.
If I set an IP in my Denon AVR with a static IP of 192.168.110 (outside the .100 to .106 range) and the Gateway is the IP of the 54GS, Sub, DNS1, 2 as for my TCP/IP connection....then I should be able to connect to the router and dsl modem......I am unable to get the Denon to connect?
The Denon is connected via a wirless bridge..Buffalo Ethernet Converter that uses DHCP to connect to the 54GS. Does that mean I can't use a static IP in the Denon that connects hardwire to the Buffalo?
How to get the Denon to see the router?
Linky54GS
Message Edited by linky54gs on 03-11-2008 02:36 PM
Message Edited by linky54gs on 03-11-2008 02:37 PM
Message Edited by linky54gs on 03-11-2008 02:37 PM

The puzzle continues.........
I have the Router Gateway IP set at: 192.168.100.100
The DHCP server in the router is setting: 192.168.100.101-.103
I have the Denon IP set: 192.168.100.121.... will not connect to the Internet...does connect to the network.
I have a DirecTV IP set: 192.168.100.120......connects to the Internet and network.
Why the Denon will not connect to the Internet is the puzzle, especially since the DirecTV is connected via the same bridge and using the same IP setup as the Denon. I tried UPnP on/off...no difference.
The Denon and DirecTV are both connected to a Buffalo Air Station (wireless Ethernet Converter). Same ports, connections as with DHCP in use and working.
The DirecTV IP is set at 192.168.100.120; the Denon 192.168.100.121.
Gateway IP, Subnet Mask, DNS, all set the same in both. All other sources use DHCP in the .101-.103 range.
DirecTV connects to Internet....Denon NO.
Both work when using DHCP via the router just fine. Just wanted a static non-changing IP in the Denon for use with FW updates/issues.
Stumped!

[Solved] Two ethernet ports (dhcp and static)

For various reasons I connect to the internet as follows:
Computer --> eth0 --> Linksys Router --> Aztech Modem/Router --> Internet
From time to time I need to access the Aztech. Usually I change the eth0 cable connecting to the Linksys to the Aztech. And restart networking. Access the Aztech. Then change the cable from Aztech to Linksys. Restart network.
In Debian (to avoid this cable changing), what I did was to also have a cable as follows:
Computer --> eth1 --> Aztech Modem/Router
eth1 is a static configuration. The debian /etc/network/interfaces file looks like
auto eth0
iface eth0 inet dhcp
auto eth1
iface eth1 inet static
address 10.0.0.3
netmask 255.255.255.0
So in Debian I plug a cable into eth1 (from the Aztech). I can then access the Aztech without it interfering with resolv.conf so I can still browse the internet via eth0.
I have tried the following in ArchLinux:
HOSTNAME="milomak-arch"
eth0="dhcp"
INTERFACES=(eth0)
eth1="eth1 10.0.0.1 netmask 255.255.255.0"
INTERFACES=(eth1)
gateway="default gw 192.168.1.1 10.0.02"
ROUTES=(!gateway)
However when I boot this is what I see
# ifconfig
eth1 Link encap:Ethernet HWaddr 00:24:8C:52:DC:5F
inet addr:10.0.0.1 Bcast:10.0.0.255 Mask:255.255.255.0
inet6 addr: fe80::224:8cff:fe52:dc5f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:468 (468.0 b)
Interrupt:17
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:24 errors:0 dropped:0 overruns:0 frame:0
TX packets:24 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1280 (1.2 Kb) TX bytes:1280 (1.2 Kb)
what am i missing?
Last edited by milomak (2009-11-21 10:35:16)

Put both interfaces in the INTERFACES= array.
/etc/rc.conf includes this detail, with a slightly different wording i.e.
# Interfaces to start at boot-up (in this order)
# Declare each interface then list in INTERFACES

HT1218 I'm trying to set up a new iPad..it asks for my WiFi network.. I find the network..then it asks for information that I have no idea about: IP address, Subnet Mask, Routet, DNS, Search Domains, Client ID..also the headings are: DHCP,BootP, Static..c

I am trying to set up my new iPad. it asks for a WiFi connection.. I have one..then the next page asks for these things:DHCP,BootP,Ststic then IP address, Subnet Mask, Router, DNS, Search Domain, Client ID then HTTP Proxy I have no idea what any of this means...can someone please help me???

Thank you sooo much. I was so disappointed...I couldn't wait to get started with the new iPad..then ran into the problem. So simple. You made my day. Thank you for your expertise!!

DHCP works, static does not.

When I enable DHCP in rc.conf, my little Netgear router gives an IP address to my Arch Linux machine - and also supplies the DNS value. When I try to manually set things, it seems my DNS values are not working.
My AL box can ping itself, at both 127.0.0.1 and 192.168.0.99. It can ping my Windows box at 192.168.0.23. It can also ping my netgear router at 192.168.0.1.
I tried putting "alias eth0 pcnet32" in my modules.conf, and now it generated a warning during bootup, something about modules.conf having a newer timestamp than a kernel lib.
I added my ISP's DNS address to my resolv.conf:
nameserver 167.206.1.103
I'm not sure how to add the second DNS address.
I'm actually running Arch Linux inside VMWare4, and documenting all the steps it takes to get AL running inside VM4, so other people can try it out easily. A blind-leading-the-blind type guide.
Any suggestions?
thx

I fixed it.
I need to change:
ROUTES=(!gateway)
to
ROUTES=(gateway)
in my rc.conf file.
oops!
Well I'll be sure to put that in my How-To.

DHCP or Static?

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