Fedora Networking :: Networking And Static IP Adresses In Presence Of DHCP

Aug 22, 2010

I want to run networking on my laptops in different environment (home, office, airport etc). I found that Netowrk Manager assigns information from DHCP although I requested fixed IP and configured the gateway and DNS. If I reconfigure the DHCP server so that there is no free IP address, the laptop refuses to connect. When I remove the interfaces from the network manager, I get the fixed IP address, /etc/resolv.conf is not overwritten from DHCP but WiFi connection cannot be established, there is no dialog for setting WPA-PSK. The static IP address seems to be taken into account only if the DHCP server is not found. I need the static address at home and in my office because I need the possibility to ssh to my laptop from another computer but I need IP from DHCP possibly authenticating against RADIUS (Eduroam) when travelling somewhere else. Is there an easy way how to achieve it and how to switch profiles easily? And I cannot switch DHCP off because some devices in my LAN cannot work without it.

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Fedora Networking :: DHCP Works / Can't Get Static To Work

Mar 21, 2009

Yes, another newbie question. Just loaded and updated FC 10. Everything works great with dhcp. Tried to setup static ip to learn more about how to set it up and nothing seems to work. I'm connected to DSL via a router when I ifconfig I get:(basic stuff)inet addr: 192.168.1.7 Bcast: 192.168.1.255 Mask: 255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

I have also tried default gateway 192.168.1.255 and 192.168.1.254.Most of what I have tried above has come from linux websites and faq's.Keeping in mind I am worst than any new newbie you have ever worked with

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Fedora Networking :: Internet Work With DHCP But Not When Static

May 28, 2009

I can access internet when my eth0 is set toDHCP client. But when I set static I can ping goole.com... but my Firefox browser doesn't connect to Interent!

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Fedora Networking :: Static DHCP Works On All Computers

Oct 18, 2009

I'm pulling my hair out to figure out what's gone wrong. I have a small home network with a router and 4 computers, 3 linux boxes and 1 windoze machine.The windoze machine and 2 of the linux boxes (newer ones, one with FC11 and the other with Ubuntu Hardy) are using the router's "Set Static IP" option just fine. However an older FC5 machine I have always gets its IP assigned randomly. As this is the machine I ssh into from overseas via a Dynamic DNS, this is a huge frustration when the power goes off or I need to restart the machine. It's usually 192.168.0.2 but sometimes 192.168.0.3 and occasionally other numbers as well. It _should_ be 192.168.0.130. As near as I can tell, I'm doing everything the same between the machines. The router config is very simple and works for the other systems so I suspect I may have a legacy tweak that I did years ago that's causing the problem.

Anyone know what I can try? I'm afraid I'm not a networking guru (ahem, wouldn't be posting if I were!) so things like "check the this" will be more helpful if there's a clear example. "Check the this...emacs /etc/thisfile/config" and see if XYZ option is TRUE" is far more useful. Again, many thanks. If none of the systems were working right then it would be totally different...but 3 seem to work just fine and happily get their assigned static IPs. It's the one non-conformist that's the trouble...

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Networking :: Enable DHCP Setting In Fedora 12 / Using Static Address?

Jan 2, 2011

My DHCP setting is disabled in fedora 12 . Previously i was using static IP address. I Want DHCP setting enable, any idea.

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Ubuntu Networking :: How To Set DHCP With Static DNS?

Aug 2, 2011

Recently, I have encountered a problem when setting my network configuration.I want to automatically get an IP address through DHCP at system startup, and this can be done by editing /etc/network/interfaces file, adding
auto eth0
iface eth0 inet dhcp
The problem is that I want to set a static DNS, but DHCP will automatically overwritten /etc/resolv.conf file.
What should I do?

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Networking :: DHCP And Static On 2 NICs

Jan 12, 2010

I have a MB with 2 NICs and on 1 I would like to have a static IP, on the other a DHCP for a local network.The problem is the DHCP provided gateway is made default vs the one for the static IP and resolv.conf is overwritten.Any suggestions how could this be resolved? I can tweak both the DHCP server settings and the box settings.

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Ubuntu Networking :: 10.04 Set To Static But Resets To DHCP?

May 21, 2010

basically I set the static ip address:

auto lo
iface lo inet loopback
auto seth0
iface seth0 inet static

[code]....

Restart networking:

"sudo /etc/init.d/networking restart"

Everything is fine but 24 hours later the server resets to the DHCP address assigned to it. I have not installed any GUI im just running Ubuntu 10.04 LTS in Hyper V. After it resets to DHCP I log into it using the dhcp address and reset the networking service "sudo /etc/init.d/networking restart". It goes back to the static IP specified in interfaces. I have rebooted several times but every 24 hours it resets.

BTW - Before someone asks about iface seth0 instead of it being iface eth0. It is a Hyper V module running.[URL]

Also FYI-
# ps -ef | grep dhclient
root 1234 1 0 May19 ? 00:00:00 dhclient3 -e IF_METRIC=100 -pf /var/run/dhclient.seth0.pid -lf /var/lib/dhcp3

[code]....

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Ubuntu Networking :: Can't Use Static Ip On Dhcp Server

Aug 17, 2010

I have 2 Ethernet connections, one (eth0) for the internet which gets set with dhcp, and one (eth1) for my internal network on which I have dhcp3-server running. I set eth1 to use static IP in interfaces, but every time I reset the network, it is fine for a couple of minutes, and switches over do being served by my own dhcp server on the same machine. (the interfaces file clearly says "iface eth1 inet static")

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Ubuntu Networking :: Static IP And DHCP Simultaneously?

Jan 5, 2011

Where I work we use almost exclusively Ubuntu 8.04 in command-line only form. I need to know if it is possible to configure one of these devices to use DHCP and a given Static IP at the same time. I know how to do one, or the other, but not both. #1. Is this possible?
#2. If so, how?P.S. Yes, I did look around before I asked this, but I could not find anything. Maybe I suck at searching?

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Ubuntu Networking :: Moving From Dhcp To Static Ip

Jul 19, 2011

ps3 lan, psp wan, xp desktop lan, netbook W7 wan, fujitsu laptop ubuntu wan for surfing but often lan for large files, android 2.1 phone wan, mac sawtooth G3 (rarley) lan. near future, tablet wan, crappy ancient laptop xp lan rarely.next week i am having 6TB DS211j NAS (omg cant wait)I think, from what i have been reading, that moving to a static ip for each device will be better suited.I manage the belkin router from the ubuntu latop and wondered what the best way to proceed is, which first, what order etc etc.I can understand what needs to be done, i have the primary dns and ip numbers and mac address for every device ( the network is mac filtered)

so how would you begin...... a peice of paper and some drawings i have ready to plan it out.the reason i choose to change from dhcp to static is because of the arrival of the DS112j. from my understanding this device would benefit from never having its ip changed on the network. There have been times when the ip has changed on some of the devices in the past when the belkin has suffered a power failure or reset.

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Networking :: Can't Change From Dhcp To Static Ip Address

Jan 16, 2010

Can't change from dhcp to static ip address.I've installed Oracle's version of Linux Redhat 5, but I'm having no success changing from dhcp to a static IP address. My machine is plugged directly into a Belkin router which has the IP address: 192.168.2.1.If I use the gui: /usr/bin/system-config-network and set the network device to dhcp,it works fine. But if I set the IP address manually, I get no internet traffic, and if I ping an internet website, "network unreachable".The installation instructions for Oracle say that they want a full domainname. I've tried gateway.2wire.net. This worked in the last place I did a successful installation.It was the address of my ATT router. If I plunked that into a browser, I got the router configuration.

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Ubuntu Networking :: Static IP Defaults To Last Dhcp Until Restart?

Oct 17, 2010

I set up my interfaces file just fine on one of my computers and everything works. On my desktop its a no go. This is what I've done. I set my interfaces file to look like this

Code:

# The loopback network interface
auto lo
iface lo inet loopback

[code]....

Then I uninstalled network manager (sudo apt-get remove network-manager-gnome). Now I can restart my computer, but I do NOT get a static IP of 112, instead I get the last working dhcp given address (.104). It connects and I get internet using .104.

BUT, if I run

Code:

sudo /etc/init.d/networking restart

then it DOES work. It changes to my address .112 and the internet works. But when I get that I get an error SIOCDELRT: No such process found (or something similar to that). But after it sits, it still finished with [OK] and my internet works. Clearly something is amiss though. Because it doesn't go to the static IP imediately. I even tried setting up a rcS.d link to a file with that networking restart command, but still no go. It starts with the .101 IP.

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Ubuntu Networking :: Change From DHCP To Static IP Address?

Nov 14, 2010

Does anyone know an easy way to do this? I can't seem to figure it out.

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Networking :: DHCP Server - Losing Static IP Address

Nov 10, 2010

I have an Ubuntu Server 10.04.1 that I have given a static IP address. Every six hours or so I will lose connectivity to it and when I type ifconfig to look at the network information, it has been given an address via dhcp. If I run the /etc/init.d/networking restart command the IP address goes back to my static address and things are fine for another 6 hours or so. Here is what is in my interfaces file:

auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 10.60.82.15
netmask 255.255.0.0
broadcast 10.60.255.255
gateway 10.60.254.254

This machine is also a DHCP server and I checked to make sure there are no other DHCP servers on my network. Right now my fix is to have a Cron job running that runs the reset command every 5 hours, but I would like to find a more permanent solution.

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CentOS 5 Networking :: Converting From Static Ip Network To DHCP

Apr 19, 2010

I decided to take the plunge and change the existing static ip configuration for my home network to a dynamic (DHCP) configuration. The DHCP server in this new network config is my gt701-wg actiontec DSL modem.

[Code]....

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CentOS 5 Networking :: DHCP Work But Not Able To Setup Static IP?

May 26, 2010

I am having several boxex with centos on it. No pb. I have recently setup a new box with centos 5.4 and I am not able to get the network working on it when configuring a static ip.I've configured eth0 and dns using "setup": unsuccessfulI've used the network config GUI: unsuccessfulAnd it is working very well when I let the dhcp getting the setting.I need a static IP.Here is the getinfo output when static ip setup, and below it, the getinfo for dhcp setting

== BEGIN uname -rmi ==
2.6.18-194.3.1.el5 i686 i386
== END uname -rmi ==

[code]....

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CentOS 5 Networking :: Spontaneous Static IP To DHCP Switch?

Jan 7, 2011

I had something I think if very odd happen to one of my computers at work today, it appears to have spontaneously switched from having a static address set to getting its address by dhcp.this is a small office with a mix of mostly linux servers and desktops with a few stand alone windows computers, mostly notebooks. Most of the desktop computers get their address by dhcp, they all have NIS /NFS for remote mounted home directories (interchangeable desktops so anyone can log in at any desk). The particular desktop computer in question here has a shared printer on its parallel port, so has a static IP. Yesterday a UPS in the server rack died, after pulling it and plugging things back in and restarting the servers, it was easiest just to reboot all the desktops, everything came up ok including the desktop in question, and the printer did work.

Today I pulled the oversized UPS from this desktop to replace the dead one, and put a more appropriately sized one in its place, shut the servers down again, rebooted, etc,About an hour later someone tells me the printer is not working on the desktop, and after a lot of searching I find this desktop has the wrong IP address, I ran system-config-network and it showed the address was set to dhcp, I changed this back to the correct static IP and things seem to be working ok now.

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Ubuntu Networking :: Server: Dhcp - No Static - Cannot Ping Router ?

Dec 9, 2010

Fresh install of 10.04.1 server; installs seamlessly; finds network no problem.

However, establishing static connection is driving me batty. Will not take. I've reconfigured "interfaces" file several times. My fingers are numb ifdown-ing and ifup-ing and /etc/init.d/network restart-ing.

I have two files in /etc/network ... interfaces and interfaces~ (one static and the other dhcp). I can switch them in and out of play. The dhcp works and pings out like a champ. static is dead, just dead. Cannot ping router ... nothing.

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Ubuntu Networking :: Changed Server From DHCP To Static And Now Cannot Access Web?

Sep 1, 2011

I assigned a static ip to my Ubuntu Server machine and it cannot access the web now. It can access anything on the LAN. The other two nodes on the network (one wifi one hardwired) can both access the web just fine.

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Networking :: Network Very Slow If Static Ip Settings / But Fine With DHCP

Jan 27, 2010

I've been using slackware for many years. I think I started with Slack 8. I know how to configure the network, I've had this same POS Dell computer for a few years now but the other day I tried to go to a different distro (first mistake) everything worked fine but it was not for me. Once you go slack you never go back! Anyway I had slack on here prior to the change and it all worked fine. I'm running slack 13 and all of a sudden my network is slow as balls! I set it up as I always have so I did some research and tried a few things, nothing worked. So i enabled DHCP and its fine now.. I have a dell xps 420. onboard intel nic. worked fine when i first installed slack 13. Anyone have any clue what to do? I would like my static IP on this machine.

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CentOS 5 Networking :: Network Install / Static Changes To Dhcp In Anaconda

May 10, 2010

I'm trying to install CentOS 5.4 from my local repo, booting the server from centos54-netinstall iso (vmware). I write "linux URL..." during boot. I eventually get prompted for network config, where I choose manual configuration. Hitting OK ignores my config and defaults back to dhcp, which won't work since I don't have any dhcp server available.Whats wrong? Is there a bug in anaconda?

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Ubuntu Networking :: Wired Network - Can't Get The IP From Dhcp Server (TW-EA510) And Static Settings Doesn't Work

Feb 16, 2011

I'm having mysterious wired network problem with my Karmic/9.10 machine. It hasn't been in network a while, but now I finally got the cabling done. I can't get the IP from dhcp server (TW-EA510), and static settings doesn't work either. Fresh cabling showed OK 1Gb connection on tester, and win7 laptop works fine. I even tried with long cable though the rooms, but it doesn't help, so it definately isn't the new cabling.

Log from the router after issuing #"dhclient":
Feb 16 23:01:43 DHCP SERVER: DHCPDISCOVER from 00:01:29:fb:c5:d1 via br0
Feb 16 23:01:43 DHCP SERVER: DHCP offer to 00:01:29:fb:c5:d1
Feb 16 23:01:49 DHCP SERVER: DHCP request from 00:1b:ea:c8:a0:ba
Feb 16 23:01:49 DHCP SERVER: DHCP ack to 00:1b:ea:c8:a0:ba
Feb 16 23:01:54 DHCP SERVER: DHCPDISCOVER from 00:01:29:fb:c5:d1 via br0
Feb 16 23:01:54 DHCP SERVER: DHCP offer to 00:01:29:fb:c5:d1
Feb 16 23:02:03 DHCP SERVER: DHCPDISCOVER from 00:01:29:fb:c5:d1 via br0
[Code]....

Motherboard is some old Lanparty with two ethernet ports, NVidia CK804 and Marvell 88E800 rev 13 Gigabit netwok adapters, neither of them works. At least another of them has been worked earlier when I last got it wired. It's been a while, so I'm not sure which one of them and with different router if that matters.

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Ubuntu Networking :: Assigned Computer A's Static Ip To Computer C Without Changing Dhcp Setting?

Aug 18, 2010

I set up a dhcp server in the lan and assigned static ips to two computers, computer A and B, according to their mac address. Everything was running fine. But when I turned off computer A, connected computer C to the network, and assigned computer A's static ip to computer C without changing dhcp setting. Computer C was able to access the internet. When I turned on computer A, dhcp couldn't assign an ip address to it, and computer C showed an error message of ip conflict and failed to use internet. I wonder if dhcp server is able to prevent other computer from using the same static ip that is already assigned to a computer according to its mac address.

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Ubuntu Networking :: Static IP Address And The Install Configures For A DHCP Configured Address - Network Not Starting

Dec 16, 2010

Version 10.04 LTS. Installed desktop version and network worked but I needed a static IP address and the install configures for a DHCP configured address. I tried changing to static address using the System->Preferences->Network Connections application but was unable to get the system to come up with the network up.

So I manually modified the /etc/network/interfaces and the /etc/resolv.conf files. I restart the system but when I do an ifconfig, I don't see a configured IP address on eth0 (only the loopback address). If I run /sbin/ifup eth0 everything then works fine and ifconfig shows the correct address bound to eth0.

My files are as follows:

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Networking :: Configure PC For Wired/static And Wired/DHCP Networks ?

Oct 27, 2010

I want my netbook to connect automatically to both the office wired/static network and to the usual wired/DHCP networks.

wicd is wicked but netsearching hasn't revealed how to configure it for both wired/static and wired/DHCP except by manually switching profiles.

wicd's profiles can use pre/post(dis)connect scripts but I don't know how to integrate them into wicd when they are upping/downing connections on cable (un)plugging.

If it is not practical to solve this within wicd, I'll explore standalone scripts to configure eth0 on cable (un)plugging, as detected by ifplugd.

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General :: Fedora 7 Machine Browses Internet On DHCP / But Fails Completely On Static Address

Aug 3, 2010

I am struggling with what might be a minor problem. I have a home computer which I would like to setup as a webserver and hence give it a static IP address. It is connected to by wire to a router that is connected to the WAN via PPPOE. If I enable the network card on DHCP it works fine in browsing the web. If I now set it to static IP address it does not brown. Essentially I use the command setup to run the static IP setup. I then set my IP address to 192.168.254.X , the subnet mask 255.255.255.0 and the default gateway to 192.168.254.1 (this is the router connected to the WAN). I am able to ping the router, however when I try and browse on static it does not work. Your help will be most appreciated as this has taken way too long to solve and I have Googled as much without success.

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Fedora Networking :: Bonding With Static Ip

Feb 26, 2009

I installed Fedora 10 and used dynamic IP first. Then I found out that bonding works with static ip only so I switched to static IP. But then, since I have 3 NIC cards, I configured bonding. I need help in these points:

1- steps to follow so that I switch from dynamic to static IP
2- steps to follow so that I configure bonding

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Fedora Networking :: Static IP's The Easy Way

Dec 12, 2010

I've seen a lot of questions on the forum about static IP's and how often people have problems configuring them. Here is how it works:

If you have a router in your network, the router is the boss. You can configure anything you want in your computer's network manager, but in the end, the router will win. Say you have 3 computers and configure each one for a static IP. If the router is still set to assign IP's dynamically, it may want to ignore that unless you boot the computers in order of IP#. In other words if you set your IP's to .001. .002, and .003 you have to boot the one with .001 first to be sure it gets that IP.

If you boot .002 first the router wants to assign it the first IP in the list; .001. If the computer will only accept .002 the router may (or may not depending on the router) eventually assign it .002, or you end up with a power struggle between the computer and the router, and have no connection to that computer.

That said sometimes setting IP's on each computer works, at least most of the time, again depending on the router. Some routers will assign the same IP to the same computer when each has individual settings, but even then you still have to deal with settings on each computer; a lot of work. And at some point you will probably still have a glitch or problem, at least temporarily. In my experience setting static IP's on the computers is hit or miss in the long run.

If you set the static IP's in the router and make sure the router recognizes each computer by it's MAC address it's a done deal. You can boot the computers in any order, they will always be assigned the same IP, and you don't have to do anything on any of your your computers or in your network managers to make it happen. Bada bing, bada boom, done. Less work, more stable network, fewer headaches.

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Fedora Networking :: How To Setup Static Ip On 14

Jan 27, 2011

i was trying to setup a static ip in order to forward ports but with no luck. I need to setup these:

- IP address: 192.168.1.2
- Subnet mask: 255.255.255.0
- Default gateway: 192.168.1.1
- Preferred DNS Server: 192.168.1.1

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