[NBLUG/talk] Strange ethernet issue

[Steve Johnson]

The switch is a high end Cisco, sorry I do not know the model number..
 I will try to find that out.

-Steve


On Tue, Apr 10, 2012 at 9:49 AM, Michael Tucker <mchltckr80 at gmail.com> wrote:
> Hi Steve,
> Those static addresses are on the boxes right? I didn't see a mention of any
> router, are those layer 3 switches?
> Thanks,
> Michael
>
>
> On Tuesday, April 10, 2012, Steve Johnson wrote:
>>
>> Hi Guys,
>>
>> I am running 3 linux boxes all on the same network, running static 10
>> net addresses, each on their own IP address..  A strange thing has
>> started happening about a month ago, if I reboot the box when the
>> system comes up at the point when it tries to bring up the eth0
>> interface I get an error "IP Address in use by another host" and then
>> the interface does not come up.  Loggin in from the console as root
>> and running ifup eth0 gives me the same error.  The only way I can get
>> the interface to come up is to physically unplug the ethernet, then
>> run ifup eth0, that brings up the eth0 correctly, and then plug the
>> ethernet cable back in.. Then it runs fine until another reboot (Or if
>> I ifdown eth0 I will have the same problem)..
>>
>> I rebooted the switch last night, incase it was a switch issue and
>> that did not clear it up.  My switch guys assure me that nothing has
>> changed on the switch.  I have verified that there are not any rogue
>> machines on the switch trying to steal my IP addresses.. So I am at a
>> loss as to what could be causing this.
>>
>> It is happening on 3 Linux boxes, all three are on different hardware
>> (same vendor, but different models) and all 3 are on different
>> versions of linux
>>
>> Box 1 -  RedHat Enterprise Linux 3
>> Box 2 -  RedHat Enterprise Linux 4 (Nahant update 5)
>> Box 3 -  RedHat Enterprise Linux 5.8 (Tikanga)
>>
>> The RHEL3 box was end of lifed a while back, so I know there have not
>> been any patches in the time that this started failing.
>>
>> Here's my eth0 configs for each box, incase it helps.
>>
>> Box 1 :
>>
>> # Intel Corp.|82557/8/9 [Ethernet Pro 100]
>> DEVICE=eth0
>> BOOTPROTO=static
>> BROADCAST=10.254.1.255
>> HWADDR=00:02:B3:CF:16:DE
>> IPADDR=10.254.1.58
>> NETMASK=255.255.255.0
>> NETWORK=10.254.1.0
>> ONBOOT=yes
>> TYPE=Ethernet
>>
>> Box 2 :
>>
>> DEVICE=eth0
>> TYPE=Ethernet
>> ONBOOT=yes
>> BOOTPROTO=static
>> HWADDR=00:18:8B:F7:1F:63
>> NETWORK=10.254.1.0
>> GATEWAY=10.254.1.1
>> NETMASK=255.255.255.0
>> IPADDR=10.254.1.60
>> BROADCAST=10.254.1.255
>>
>> Box 3 :
>>
>>
>> # Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet
>> DEVICE=eth0
>> BOOTPROTO=static
>> BROADCAST=10.254.1.255
>> HWADDR=00:19:B9:DD:CA:45
>> IPADDR=10.254.1.46
>> IPV6ADDR=
>> IPV6PREFIX=
>> NETMASK=255.255.255.0
>> NETWORK=10.254.1.0
>> ONBOOT=yes
>>
>>
>> Ay ideas, or clues would be greatly appreciated.. I've been trying to
>> trouble shoot this for over a month now with now luck.
>>
>> -Steve
>>
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