We had to do the same thing on R410's.  We ran into a situation where
the one of the interfaces would stop working, and ethtool would show
"no link".  Restarting network wouldn't fix anything, only a reboot
would resolve the problem.  Moving to the Broadcomm provided driver
has solved this for us.

Dave

On Wed, Feb 3, 2010 at 6:30 AM, Carlson, Timothy S
<[email protected]> wrote:
> I've moved away from the RHEL/Centos driver and have gone directly to the 
> bnx2 driver from Broadcomm.
>
> dmesg | grep bnx
> Broadcom NetXtreme II Gigabit Ethernet Driver bnx2 v1.9.20b (July 9, 2009)
> bnx2: eth0: using MSI
>
> That driver seems stable for me. I was seeing your things similar to your 
> problem and this driver fixed things right up for me.
>
> http://www.broadcom.com/support/ethernet_nic/driver-sla.php?driver=NX2-Linux
>
> You'll need to download that driver and rebuild it from the SRPM. You'll also 
> need to rebuild the driver for each kernel update which is a pain.
>
> Tim
>
> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On Behalf Of James Sparenberg
> Sent: Wednesday, February 03, 2010 1:08 AM
> To: [email protected]
> Subject: Returning Network stability problems on R710 servers and BCM5709
>
> All,
>
>   I'm referencing an earlier thread from last Sept.
>
> http://lists.us.dell.com/pipermail/linux-poweredge/2009-September/040252.html
>
>   In it there was a discussion related to stability problems with the 
> Broadcom BCM5709 on a Dell r610, where there would be a loss of connectivity 
> for new connections but existing connections, or all connections of a 
> different protocol passed.
>
> For example.  Just now I lost the ability to ping eth0, or get NIS 
> authentication on that IP, I also lost the ability to get TFTP connections 
> via the eth1 address.  However at the same time DHCP is running against eth1, 
> and SNMP NTP and HTTP over port 10000 (webmin) where merrily working quite 
> well on eth0.
>
> OS CentOS 5.4
>
> kernel   2.6.18-164.10.1.el5 SMP x86_64
> Kernel module bk2
>
> modinfo output
>
> filename:       
> /lib/modules/2.6.18-164.10.1.el5.centos.plus/kernel/drivers/net/bnx2.ko
> version:        1.9.3
> license:        GPL
> description:    Broadcom NetXtreme II BCM5706/5708/5709/5716 Driver
> author:         Michael Chan <[email protected]>
> srcversion:     1040A42F87B8BE8A019736C
> alias:          pci:v000014E4d0000163Csv*sd*bc*sc*i*
> alias:          pci:v000014E4d0000163Bsv*sd*bc*sc*i*
> alias:          pci:v000014E4d0000163Asv*sd*bc*sc*i*
> alias:          pci:v000014E4d00001639sv*sd*bc*sc*i*
> alias:          pci:v000014E4d000016ACsv*sd*bc*sc*i*
> alias:          pci:v000014E4d000016AAsv*sd*bc*sc*i*
> alias:          pci:v000014E4d000016AAsv0000103Csd00003102bc*sc*i*
> alias:          pci:v000014E4d0000164Csv*sd*bc*sc*i*
> alias:          pci:v000014E4d0000164Asv*sd*bc*sc*i*
> alias:          pci:v000014E4d0000164Asv0000103Csd00003106bc*sc*i*
> alias:          pci:v000014E4d0000164Asv0000103Csd00003101bc*sc*i*
> depends:
> vermagic:       2.6.18-164.10.1.el5.centos.plus SMP mod_unload gcc-4.1
> parm:           disable_msi:Disable Message Signaled Interrupt (MSI) (int)
> parm:           enable_entropy:Allow bnx2 to populate the /dev/random entropy 
> pool (int)
> module_sig:     
> 883f3504b47af9bd3b84a368dd51f2112b6b90a0ed1bac15e1b94720602336594dc65775db83c460991575cc8694cf9c03aca6e623e0950281e5094
>
> So you can see that the version I have exceeds the version said to be stable 
> in the prior thread.  BTW this chassis is about 1 month old so it should (but 
> unverified) have the latest BIOS.
>
> Ironic part.  Same model running the same version/kernel of CentOS (kick 
> start install so all my boxes are the same) is running some load testing 
> pushing millions of sessions and billions (soaking 4 1G nics) of packets 
> without a hitch in our LAB, testing out equipment, yet, this box which has a 
> relatively low throughput is the one that locks up.
>
> Any thoughts or suggestions would be appreciated.  So far nothing in normal 
> logs so I'm going to turn some additional logging on.
>
> James Sparenberg
>
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