[rhelv6-list] MAYDAY ... very strange network breakdown/freeze with new servers and RH EL 6 x86_64

[Barry Brimer]

> yesterday I got two identical new servers for running RH EL 6.
>
> I did a basic installation with all defaults to the software selection,
> the disk setup (LVM, ext4,...). After registration, I did an yum update.
>
> The current kernel is 2.6.32-71.7.1.el6.x86_64.
>
> The onboard LAN is 2 x 1 GBit/s Intel 82574L
>
> The servers Tech spec can be seen here:
> https://www.thomas-krenn.com/de/server-systeme/technisches-datenblatt/frame.only_content/key.6957.html
>
>
> At installationtime I set the lan configuration to DHCP and changed it
> later with the system-config-network tool to static IP and DNS/gateway
> settings.
>
> Now I'm faced with the problem, that the LAN connection freezes after a
> couple of minutes and I cant restart the network service. And there are
> a lot off errors and dropped packages/frames.

I would look in dmesg.  Does this happen with the older kernel that you 
installed with the system?  I would also use a LiveCD and see if the same 
thing occurs.