CentOS 5 Networking :: Error: No Dhcp Offers Received - Using Systemimager To Autoinstall System Images On Pc's Connected In Lan
Mar 10, 2009
i want to resolve the above error. I'm using systemimager to autoinstall system images on pc's connected in lan. while doing this i got the error No DHCPOFFERS received. Also at the time of booting my pc it shows the message No dhcp and/or proxyDHCP offers recieved. But i've started the dhcpd deamon on my pc. Also the systemimager rsync deamon is running. The two pc's are also connected in lan properly.
Still while autoinstalling the image on client it fails showing the error message... No DHCPOFFERS recieved. what do i do in order to make my autoinstall work properly? How do i come to know whether the dhcp server is running or not? What will be the exact problem in autoinstalling?
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Jul 5, 2011
I used to connect to the internet via a Linksys router using the following terminal commands (Network Manager has never worked for me on any Ubuntu install):
Code:
sudo ifconfig wlan0 down
sudo dhclient -r wlan0
sudo ifconfig wlan0 up
[code]....
However, I recently changed the old modem + router for a new wireless modem (a Thomson TG585v8 ). Now, the result of that last command is this:
Code:
amosupremo@amosupremo:~$ sudo dhclient wlan0
Internet Systems Consortium DHCP Client V3.1.3
[code]....
No working leases in persistent database-sleeping. I've tried to connect in Natty(both Ubuntu and Kubuntu) and it's not working either.I also purged Network Manager and installed wicd and I managed to get an intermittent, slow connection.
1 ) Machine Brand and Model (PC/Laptop): No brand. I built it with the following specs:
AMD Athlon II X4 2.6GHz
2 HD: 100GB Sata (Ubuntu and XP64 install) / 80GB IDE (XP)
4GB RAM
Gigabyte Motherboard
2 ) Wireless Brand, Model and Wireless Chipset:
Code:
amosupremo@amosupremo:~$ lsusb
Bus 002 Device 005: ID 0ace:1201 ZyDAS 802.11b
Bus 002 Device 004: ID 049f:000e Compaq Computer Corp. Internet Keyboard
[code]....
3 ) check interface:
Code:
amosupremo@amosupremo:~$ ifconfig wlan0
wlan0 Link encap:Ethernet HWaddr 00:02:72:04:d0:04
[code]...
I am also attaching the wicd log. It contains a session where I got the intermittent connection. I stopped that connection and restarted it (with the same results) two times.
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May 12, 2011
I'm using the following in a script to connect to my house's wi-fi - it works perfectly for me - simple, and with a static IP:
Code:
modprobe zd1211rw #load the module needed by my wireless LAN adapter
ifconfig wlan0 up
iwconfig wlan0 essid my_network_name_at_home
ifconfig wlan0 10.0.0.8 netmask 255.255.255.0
route add default gw 10.0.0.2 wlan0
iwconfig wlan0 key key_comes_here
However, if I take my machine to the office, we've got DHCP assigned dynamic IPs. How can I modify the above script to NOT do
Code:
ifconfig wlan0 10.0.0.8 netmask 255.255.255.0
route add default gw 10.0.0.2 wlan0
but instead get them from the DHCP service running at work on the W-LAN?
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Jun 25, 2010
I have configured dhcp3-server on my debian box and I'm wanting to offer dhcp on one of the vlan interfaces. The dhcp is functioning but when I test applying it to a different vlan, the original PC can still get an IP. For example: eth1 has vlan100 and vlan200. Our managed switch has the ports configured such the pc1 is on vlan100 and pc2 is on vlan2. This works fine and I can inter-route between vlans with static IPs. Our dhcp config is currently set as:
ping-check true;
ddns-update-style none;
default-lease-time 21600;
max-lease-time 86400;
INTERFACES="vlan100";
authoritative;
[code]....
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Jan 3, 2010
I've managed to (I think) get my network card talking, but stuck at the DHCP. Network is wired, /interfaces looks like this:
[Code]....
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Mar 6, 2011
I had the wrong WPA password.[/blush] It appeared to me that it was connected OK at the physical/datalink level but apparently that was not the case.I've set up an old PC with the latest Ubuntu desktop and am trying to set up wireless networking with a TP-Link TL-WN722N. It only came with Windows drivers but from a thread elsewhere I got it to where it finds my router and connects with the password. However, it doesn't pick up its IP details. The router is working fine wirelessly on my phone and wirefully on my other PC.
I've edited /etc/network/interfaces with "auto wlan0" and "iface wlan0 inet dhcp" but after restart the wlan0 interface has no IP details. Originally the interface had IPv6 details but I cleared that with ifconfig. Under the Network Connections Wireless tab it has "Auto" followed by the name of my wireless connection so it appears to have connected OK. Now when I click Edit for that connection nmame, the IPv6 tab says Ignore and IPv4 says Automatic (DHCP) but Addresses is greyed out and the other fields are all empty.
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Jan 16, 2009
I have a WET54g bridge that I am trying to get connected to a wireless network that only allows DHCP. The idea behind it is that I would like to connect the Cat6 out of the bridge to a switch allowing multiple wired computers to connect to the wireless network. The bridge will easily connect to the network once I put the WEP key in, however, there is a kink after that. When I connect the Cat6 to my computer and request an IP for that computer, it self assigns. This tells me that it is not talking to the wireless network through the bridge.
I can not find which IP address the bridge was assigned so that I can talk to it. The sub net is 255.255.240.0 which leaves quite a few possibilities. I know that the bridge is, however talking to the wireless network because the light is steady on the front of it which indicates just that. One other thing to stack on is that I know that there is a "splash page" which comes up when any computer connects. You click on the agreement and then you are allowed onto the network. How can I get my computer to talk through the bridge to the wireless network?
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Apr 11, 2011
When I start I have this message : Xlib: extension "RANDR" missing on display ":0". The program 'filezilla' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
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Jul 8, 2010
I have been routing network traffic based on MAC addresses, so we can distribute traffic evenly over a series of WAN IP addresses.Everything seems to be going well, but I have a very curious problem. One of the users can connect to the network without problem, but I don't see him in my network administration application (neither his MAC address or leased IP address).At the same time, I'm trying to identify other unknown computers on my network based on MAC addresses I don't have on file.
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May 13, 2010
My parents have a 8 yr old computer, and they have been running linux for the last 2 years- our graphics card has been a nightmare. It has not worked right....since we first installed 7.10. In 9.04 it could still halfway play DVD's & videos (just barely). No longer in 10.04- Mplayer, totem, xine & VLC die when you try to play a video- any video.
And here's what I get(in terminal):
The program 'totem' received an X Window System error. This probably reflects a bug in the program. The error was 'BadAlloc (insufficient resources for operation)'. (Details: serial 89 error_code 11 request_code 132 minor_code 19). (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the --sync command line option to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.)
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Jun 18, 2010
I installed the Centos 5.5 and after the Xen. After I put a virtual machine named VM01.Initially it worked properly, I tried everything and it worked.When rebooted, I had problems with the network.I have two network cards eth0 and eth1, but eth1 does not have any ip and I use only eth0.The error that appears is:
vif0.0: received packet with own address the source address
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Jun 8, 2009
i am using centos 5.2 . recently i have implementing transparent proxy but i faced issue. i received lots of messages in dmesg. i have 2 machine with same OS another machine are works fine with this same configuration
br0: received tcn bpdu on port 1(eth0)
br0: topology change detected, propagating
br0: received tcn bpdu on port 1(eth0)
br0: topology change detected, propagating
br0: received tcn bpdu on port 1(eth0)
[Code]...
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Nov 7, 2010
I am having a problem getting a wireless network connection on my DELL laptop running CentOS 5. I have no problem getting a wireless connection when the laptop is booted in Windows XP. I also don't have a problem when booted under CentOS 5 and there is no authentication setup on the wireless router. I only have a problem when I setup authentication. The router wireless log shows the PC connectinng, authenticating, and succeeding authentication.I am using the Broadcom Hybrid-wl wireless driver.
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Jun 21, 2011
I'm giving windows 7 a break and have a fresh, updated install of opensuse 11.4. The problem I have is that when I plug my samsung galaxy S2 in I can't view the pictures I've taken with the camera.I get the popup box saying camera and giving me the option to view with gwenview, digikam and filemanager. Now i can see the folders including the DCIM folder that the images are stored in but it's empty?
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Apr 7, 2010
I have an existing home network with fixed ip's. I'd like to connect a "dish network" HDTV box into the network but it can't use fixed ip's. So is it possible to use one of my computers and setup a DHCP subnetwork?
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Mar 26, 2010
I would like an old desktop box to use my laptop as a router to access the internet. Here is my setup:
I have one ethernet port in the side of my laptop which I want to use to get internet access to my desktop computer. The laptop is connected to the LAN via a wireless link. Both systems run Linux. The desktop autoconfigures itself using DHCP. The laptop is a Kubuntu system. I do not have any crossover cables, though wireshark on the laptop sees the DHCP requests from the desktop just fine, so I doubt that I need one.
What do I have to do to make this work?
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Feb 9, 2010
how to configure DHCP server on centos linux and how to configure FTP server on centos linux
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Jan 25, 2009
Assume I installed originally CentOS Desktop with IP receiving from DHCP server.Later I decided to assign a fixed IP to the local CentOS installation.How do I switch (permanently) the dynamic DHCP IP assignment to a fixed IP?
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May 7, 2010
I have installed Centos 5 on a virtual machine (esx4i). I set it to obtain an IP address from the DHCP sever, which is a broadband router, it has been given an IP address of 10.10.11.159 the router is 10.10.11.1 but I can't ping the router and I can't get any access to the network! I have a SCO Openserver server on the same physical box and it works fine so I know the network card & cable is ok.
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Dec 10, 2009
I am using centos 5.4, recently i come to know that people are'nt able to connect to my system using ssh.1. but i can easily connect to them. 2. I checked the firewall settings also, it seems ok to me.3. I tried restarting sshd also. " /etc/init.d/sshd restart " but to no avail.4. Before when i was using 5.3, it was not a problem..!!5. I tried the following command on other system. It shows the following output.
# ssh -v -l niks 43.88.101.99
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
debug1: Reading configuration data /etc/ssh/ssh_config
[code]....
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Jun 5, 2010
using the LDAP as storage of hostnames/IPs/MACs for the DHCP server on CentOS.Also once the IP is allocated via DHCP to the hosts,it would be useful to insert such host into the DNS. (BIND? dnsmasq?)I've found this link [URL] which deals with a patch for the ISC DHCP package, but I don't think this is actually up-to-date.
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Jul 23, 2009
I have Centos 5 installed on a PC in the local network. I have installed the RPM dhcpv6-client-1.0.10-16.el5.i386.rpm on this PC to configure it as DHCP V6 client. The RPM was installed successfully, and I have done modifications to the following files:
1. /etc/sysconfig/network, set the networking to yes.
2. /etc/sysconfig/network-scripts/ifcfg-eth1 set the BOOTPROTO=DHCP.
Now the problem is when I start the client on this pc as dhclient, it throws the following errors, and logs out after some time. All the network configurations were lost and the PC gets disconnected from the network.
[root@ServerB]# dhclient
Internet Systems Consortium DHCP Client V3.0.5-RedHat
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/
[Code]...
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Aug 6, 2009
I am attempting to get this network card running under CentOS 5.2 but have had no luck. Some sites say to use the sk98lin driver, others the skge, which I can't find at all. I have tried multiple versions of the driver in rpm but none seem to work. The card shows under the network manager but will not get an IP address from the DHCP server.
Here are the outputs for this card.
uname -rmi
2.6.18-92.1.10.el5 x86_64 x86_64
lspci -m
04:01.0 "Ethernet controller" "D-Link System Inc" "DGE-530T Gigabit Ethernet Adapter (rev 11)" -r11 "D-Link System Inc" "DGE-530T Gigabit Ethernet Adapter (rev 11)"
lspci -n | grep "$(/sbin/lspci | awk '/net/ { print $1 }')"
04:01.0 0200: 1186:4b01 (rev 11)
lspci -vv
04:01.0 Ethernet controller: D-Link System Inc DGE-530T Gigabit Ethernet Adapter (rev 11) (rev 11)
Subsystem: D-Link System Inc DGE-530T Gigabit Ethernet Adapter (rev 11)
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Latency: 64 (5750ns min, 7750ns max), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 121
Region 0: Memory at febfc000 (32-bit, non-prefetchable) [size=16K]
Region 1: I/O ports at e800 [size=256]
Expansion ROM at e0000000 [disabled] [size=128K]
Capabilities: [48] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=1 PME-
Capabilities: [50] Vital Product Data
How to get this working as we have 3 of these cards for computers without a Gb NIC and I don't want to fight with it 3 separate times.
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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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May 13, 2010
I'm trying to make a DHCP server work on my CentOS 5.4 box, but I have placed it on another subnet than the one that it is going to serve. I use a helper address on my router to make the the DHCP requests being routed to the DHCP server on the other subnet.
dhcpd.conf file:
ddns-update-style interim
ignore client-updates
ubnet 10.160.195.160 netmask 255.255.255.224
[code]...
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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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Nov 24, 2010
I have a Lan with 100 computers with microsoft windows xp and vista on it, and I need to build a CentOS Primary domain control- PDC. So I am building a PDC , with samba 3.x +Ldap ( Light Directory Acess Protocol), with static eth0 and DHCP-server( Dynamic Host Control Protocol) on eth1.
Eth0 : 192.168.1.3
Eth1 : 192.168.1.5
Here is the configurations files:
== BEGIN uname -rmi ==
2.6.18-194.17.4.el5 x86_64 x86_64
== END uname -rmi ==
== BEGIN rpm -q centos-release ==
centos-release-5-5.el5.centos
== END rpm -q centos-release ==
== BEGIN cat /etc/redhat-release ==
CentOS release 5.5 (Final)
== END cat /etc/redhat-release ==
== BEGIN getenforce ==
Permissive
== END getenforce ==
== BEGIN rpm -q yum rpm python ==
yum-3.2.22-26.el5.centos
rpm-4.4.2.3-20.el5_5.1
python-2.4.3-27.el5
== END rpm -q yum rpm python ==
== BEGIN ifconfig -a == .....
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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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Jan 9, 2011
I got a CentOS server setup as a dhcp server using dnsmasq. I followed this guide more or less: [URL] So, the problem seems to be concerning the DNS server on the clients. In windows I get the "limited connectivity" icon for the network, and when I select troubleshoot it says the DNS server does not respond. Issuing 'ipconfig /all' clearly shows the IP of the CentOS machine as the DNS server, which should be correct, yes?
ETH0 is working as WAN connection and that works great.. no problem with the WAN connection at all on the CentOS machine. ETH1 has the IP 192.168.0.1 and mask 255.255.255.0 When starting eth1, it sometimes says that it can't start eth1 because the IP 192.168.0.1 is already in use.. but that is most certainly not the case. Maybe there's some kind of issue here that messes with the DNS? What's mind boggling is that it works great on a linux machine (dhcp client) and on a windows xp machine. but it does not work on the windows 7 laptop and a vista laptop and a pda device.
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Mar 31, 2011
configuring DHCP server with two NICs. I need DHCP server with 2 NICs:
eth1 - 192.168.103.11
eth2 - 192.168.123.11
The client also has two NICs and suppose to receive ip addresses eth1 from 192.168.103.0 and eth2 from 192.168.123.0 Here is the dhcpd.conf from dhcp server:
ddns-update-style interim;
authoritative;
ignore client-updates;
[code]....
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