Red Hat :: PXE Boot (pxelinux.0) Is Using The Wrong Ethernet Port?
Jan 26, 2011
My environment is RHEL5. For the sake of discussion, I have two systems, each with multiple ethernet ports.
To simplify the discussion, let's say each computer has two ports. One port is the "public" ethernet (eth0) and the other is the "private" (eth4) ethernet.
All the boot activities must occur on the private site, and to a point this works well. DHCP works, the pxelinux.0 file is transferred (seen using wireshark) and the client appears to bootstrap, when the bootstrap restarts the DHCP handshake using the wrong ethernet port (eth0).
The client does NOT get far enough along to read the client's configuration document under pxelinux.cfg.
How do I instruct pxelinux.0 to use eth4 and not eth0 to continue the boot process?
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Jan 12, 2011
I have successfully set up a tftp/dhcp server from which to deliver gPXE or PXElinux, so my machine can boot from iSCSI (there is no hard drive). Using either one (I prefer gPXE to keep thing simple), when iSCSI boot fails (e.g. the iscsi target is empty), the iSCSI target is successfully retained as a device in BIOS, and the BIOS is supposed to move to the next boot device, in this case the DVD drive. However it does not. So in order to be able to install Windows to the iSCSI drive I need to either get gPXE or PXElinux to instruct it to boot from the first optical drive after sanboot fails, or set up a PXE image server to load the Windows DVD from, which I don't really have time to do.
I've scoured the web for instructions on how to get either of these to do a local optical drive boot, but all I can find is codes to boot from hard drives or floppies.
I figured networking would hit the most people experienced with PXE and gPXE...
p.p.s. Here are my files so you know what I'm doing:
dhcpd.conf
Code:
allow booting;
authoritative;
option space gpxe;
option gpxe-encap-opts code 175 = encapsulate gpxe;
option gpxe.keep-san code 8 = unsigned integer 8;
[Code].....
Note: Yes, I know I can do a UI based menu for this, I'll set that up once I have everything working. I added the loader label because I read that it would execute a boot loader that I could use to select the DVD drive, but it doesn't work yet. The way it's set up, PXElinux fails when I execute "loader". It says kernel memdisk not found even though memdisk.bin is in the same directory, and when i change it to
Code:
kernel memdisk.bin
it just hangs. The files are from SYSlinux 4.0.3 and am using gPXE 1.0.1. I'm sure I've missed something fundamental, this is my first time using PXElinux. Or network booting at all really.
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pardon me if i am not making absolute sense here as my knowledge is limited on Layer 1 and layer 2.
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update:
Code:
luke@media:~$ sudo service bind9 restart
* Stopping domain name service...
[code]....
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Code:
int initport(int fd)
{
[code]...
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Jul 13, 2010
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I am running Linux on the PC, specifically Fedora 13 (kernel 2.6.33.6-147.i686.PAE is the latest update I've tested i think).
Originally after installing the PC recognizes both ports and I can use the top port (82578DM) without any problems however the default MAC address comes up as 88:88:88:88:87:88. This MAC address is consistent regardless of which Linux OS I install, I have tried Fedora, Ubuntu and Cent OS.
If I try to use the bottom port (82583V), which has a more logical mac address, it will work for a few seconds. However once I try any extended contact, for example a yum install or file download using a browser, the connection will stop working.
When checking dmesg I am presented with a spam of:
Code:
pciehp 0000:00:1c.6:pcie04: Card not present on Slot(134)
pciehp 0000:00:1c.6:pcie04: Card present on Slot(134)
pciehp 0000:00:1c.6:pcie04: Card not present on Slot(134)
pciehp 0000:00:1c.6:pcie04: Card present on Slot(134)
[Code].....
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Mar 1, 2010
I have got a laptop running Debian squeeze. I wish to share the wireless connection of the laptop (wlan0) to the ethernet port of the laptop, so that I can share the wireless connection to my desktop PC which is connected to the ethernet port.
[My desktop PC]---Ethernet---[My laptop]---))) WiFi )))---[Public network/ ISP]
I have read the article on Ubuntu community: [url]
I followed the steps, and the /etc/network/interfaces file on my laptop is:
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I also read the information on Debian Wiki: [url]
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Mar 11, 2010
I'm currently using Ubuntu 9.1, and a motherboard which has two Ethernet ports on it.
What I would like to do is bridge these ports, so I can plug in another Ethernet cable and run it to an unmanaged switch in my room (handy for my work laptop when on-call and building other PCs, etc).
I.e. Router --> 8-Port Switch --> My PC.
Eth 0 --> 192.168.1.100 static
Eth 1 --> 5-Port Switch --> DHCP
I believe this is the config to make the ports bridged:
ifconfig Eth0 0.0.0.0
ifconfig Eth1 0.0.0.0
brctl addbr Bridge0
brctl addif Bridge0 Eth0
brctl addif Bridge0 Eth1
ifconfig Bridge0 up
- How do I save this so upon reboot it sticks?
- How do I force Eth0 to remain as a static IP of 192.168.1.100?
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Jul 28, 2010
I have a Dell WLAN 1397 Half Minicard, 802.11 b/g card in my laptop, and I can't seem to get ubuntu to work with it. I tried this method:
1. Synaptic Pack Manager
2. Check "Install from Boot Disc"
3. Reload
4. Install and apply bcmwl-kernel-source
5. Reboot
This didn't work for me, so I tried entering sudo apt-get install bcmwl-kernel-source and that also didn't work. Another thing I tried is formatting my Ubuntu partition and reinstalling, and retrying both of those methods. The ethernet port does work, however.
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