Can't detect onboard lan

[hosea_sanchez]

big time newbie... working on a server kernel 2.6.15-51-server

sudo vi /etc/network/interfaces

responds with
eth0 and my static address...

if I enter <ifconfig>

I get the response that it cannot find any devices...

I am running this in the shell or terminal

I see code that tells me that it has found the on board lan... I have cloned the drive and loaded it in the same model motherboard/have tried an intel mb.

If I load the drive with the original mb.. everything is ok...

I am lost.. lost ... lost.. search the web and tried most suggestions that I found on forums... any help would be appreciated... I am reading, reading and reading

[JLB]

Can you open a terminal and post the output of lspci -v and lsmod and ifconfigThis should help someone pinpoint what kind of network card you have and then it is a lot easier to figure out if you have the correct module loaded.

[cdenley]

The ethernet adapter assignments are persistent for the mac address. If you replace the ethernet card, it gives the new card a new number. I believe you are using dapper, correct? I think on dapper, if you wanted to clear the previous ethernet assignments, you could do

sudo rm /etc/iftab

On newer releases, the persistent ethernet assignments are stored in /etc/udev/rules.d/70-persistent-net.rules. I'm guessing if you run "ifconfig -a" you will see the new ethernet adapter is eth1, but is not configured in /etc/network/ineterfaces so it is disabled. You either need to fix it so it is eth0, or edit /etc/network/interfaces to use eth1.

[netlogic]

big time newbie... working on a server kernel 2.6.15-51-server

sudo vi /etc/network/interfaces

responds with
eth0 and my static address...

if I enter <ifconfig>

I get the response that it cannot find any devices...

I am running this in the shell or terminal

I see code that tells me that it has found the on board lan... I have cloned the drive and loaded it in the same model motherboard/have tried an intel mb.

If I load the drive with the original mb.. everything is ok...

I am lost.. lost ... lost.. search the web and tried most suggestions that I found on forums... any help would be appreciated... I am reading, reading and reading

dmesg |grep eth
dmesg |grep ath
lspci |grep Ethernet
sudo lshw

and post Ethernet related things for us

after that type "lsmod" and make sure ethernet device described by the kernel messages are loaded. there is a chance it is loading the wrong module. let's take it one step at a time.

[hosea_sanchez]

First... I am missing the first few lines of the output lspci - v as they are at the top of the screen and I can't figure out how to scroll up...

and... other than typing all the output, is there any way to get the code?

so here is what I have

Output lspci - v

Flags: bus master, 66mhz, medium devsel, latency 64, IRQ 209
Memory at dffe0000 (32bit, non-prefetchabel) [size_128k]
I/O ports at ef80 [size=64]
Capabilities: [dc] Power Management version 2
Capabilities: [e4] PCI-X non-bridge device.

0000:02:00:0 PCI bridge: Intel Corporation 6700PXH PCI Express-to-PCI Bridge A (rev 09) (prog-if 00 [Normal decode ])

Flags: bus master, fast devsel, latency 0
Bus: primary=02, secondary-04, subordinate=04, sec-latency=48
Capabilities: [44] #10 [0071]
Capabilities: [5c] Message signaled Interrupts: 64bit= Queue=0/0 Enable-
Capabilities: [6c] Power Management version 2
Capabilities: [d8]

0000:02:00.2 PCI Bridge: Inter Corporation 6700PXH PCI Express-to PCI Bridge B (rev 09) (prog-if 00 [Normal decode])

Flags: bus master, fast devsel, latency 0
Bus: primary=02, secondary-03, subordinate=03, sec-latency=64
Capabilities: [44] #10 [0071]
Capabilities: {5c] Message signaled Interrupts: 64bit= Queue=0/0 Enable-

Capabilities: [6c] Power Management version 2
Capabilities: [d8]

Output lsmod

evdev 11136 0
sg 40992 0
ext3 148232 1
jbd 62996 1 ext3
ide generic 2432 0
ehci_hcd 37128 0
uhci_hcd 36112 0
usbcore 139140 4 usbhid,ehci_hcd,uhci_hcd
sd_mod 21248 3
generic 5892 0
ata_piix 12292 4
ahci 19204 0
libata 84248 2 ata_piix,ahci
scsi_mod 146312 4 sg,sd_mod,ahci,libata
thermal 14728 0
processor 27592 1 thermal
fan 5764 0
fbcon 44448 0
tileblit 3712 1 fbcon
font 9216 1 fbcon
bitblit 7424 1 fbcon
softcursor 3200 1 bitblit
capability 5896 0
commoncap 8192 2 capability

ifconfig

no output


sudo vi /etc/network/interfaces

auto eth0
iface eth0 inet static

address 192.168.0.198
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.1268.0.255
gateway 192.168.0.1

I have the same problem if I take a cloned hd and drop it into the identical mboard.... If I take the clone and drop it into the original mboard, i have lan

Thanks

[cdenley]

Did you read my post? What is the output of "ifconfig -a"?


other than typing all the output, is there any way to get the code?

You can pipe output to a file. For example:

ifconfig -a>output.txt

[hosea_sanchez]

config -a

eth2

Link encap: Ethernet HW addr mac address.........
BROADCAST MULTICAST MTU:1500 Metric :1


lo

Link encap:Local Loopback
LOOPBACK MTU: 16436 Metic:1

........ RX and TX packets etc.. all at 0



I edited the above so that eth0 had the above address and it still didn't work.

The software on this machine adds Ethernet ports for every machine added to it's network with it's mac address...

There are some machines with 16 Ethernet ports...

My difficulty is getting the output.txt...there is no printer installed or way to save the file... there are no other drives on this machine...

This is a bit overwhelming at the moment...

[cdenley]

sudo rm /etc/iftab
reboot
If you read my post, I explained what is going on. Every time the operating system sees an ethernet adapter, it gives it a number. The number matches the mac address. It will keep this assignment forever, and the number will never be re-used for a new device unless you manually delete it. When you copy from one system, to another, to another (booting each system before you copy it), then on the last copy, ubuntu will have assigned a number to all the ethernet adapters in all your computers. See for yourself:

sudo nano /etc/iftab

If you create all your copies from a single hard drive, then all your copies should see the ethernet adapter as eth1.

[netlogic]

config -a

eth2

Link encap: Ethernet HW addr mac address.........
BROADCAST MULTICAST MTU:1500 Metric :1


lo

Link encap:Local Loopback
LOOPBACK MTU: 16436 Metic:1

........ RX and TX packets etc.. all at 0



I edited the above so that eth0 had the above address and it still didn't work.

The software on this machine adds Ethernet ports for every machine added to it's network with it's mac address...

There are some machines with 16 Ethernet ports...

My difficulty is getting the output.txt...there is no printer installed or way to save the file... there are no other drives on this machine...

This is a bit overwhelming at the moment...

Ah... You did had ethernet. Next time, please post the complete information. We can't help you without it.

[hosea_sanchez]

I need to clarify.... My "master drive" did work in the original mboard. I cloned the drive and installed it with an identical mboard. That system did not find the network. I then tried the clone in another server with an intel mboard. It did not find the network either.

I am trying to understand why the clone did not work in the indentical mboard or the intel mboard.

[netlogic]

I am trying to understand why the clone did not work in the indentical mboard or the intel mboard.

Because you still had the mac address of older machine on eth0. It was being occupied.

less /etc/iftab

[hosea_sanchez]

cdenley - rm'd the /etc/iftab and everything worked... THANKS SO MUCH for humoring me!!! Thanks everyone who posted.

[netlogic]

Now, you know something new today. Now, if someone has the same question, it is up to you to step in and help out.