I have checked the physical connectivity which is perfectly
fine. This machine is very critical which we need to keep running as much
as possible. So I had gone to older kernel 2.6.18-92.1.17.el5. But along
with this kernel, I had added one more Dlink ethernet card which shows to
be
05:09.0 Ethernet controller: D-Link System Inc DGE-530T Gigabit Ethernet Adapter (rev 11) (rev 11)
and it uses the skge driver.
So I could test the machine with this new card and
kernel-2.6.18-92.1.17.el5 togather. Still I do get the network breaks but
the frequency reduced to factor of Ten. The corresponding messages seen in
the /var/log/messages are as follow.
Apr 21 10:18:32 kernel: skge eth1: Link is down.
Apr 21 10:18:36 kernel: skge eth1: Link is up at 1000 Mbps, full duplex, flow control none
Apr 21 10:18:55 kernel: skge eth1: Link is down.
Apr 21 10:18:57 kernel: skge eth1: Link is up at 1000 Mbps, full duplex, flow control none
Apr 21 10:18:58 kernel: skge eth1: Link is down.
Apr 21 10:19:01 kernel: skge eth1: Link is up at 1000 Mbps, full duplex, flow control none
Regards,
Mangesh
On Tue, 21 Apr 2009, D Tucny wrote:
2009/4/21 Mangesh S. Umbarje <mangesh@xxxxxxxxxxxxxxxxxxxxx>
Dear All,
I am having a HP xw4400 with following ethernet controller
as reported by lspci
Broadcom Corporation NetXtreme BCM5755 Gigabit Ethernet PCI Express (rev 02)
This machine was running CentOS 5.2 without any problem. After
updating the machine with yum update on 8 April, after which it is showing
to be CentOS 5.3, this machine stops communicating intermittantly and I
see the following message correspondingly in /var/log/messages
Apr 18 10:30:07 kernel: tg3: eth0: Link is down.
Apr 18 10:30:10 kernel: tg3: eth0: Link is up at 1000 Mbps, full duplex.
Apr 18 10:30:10 kernel: tg3: eth0: Flow control is off for TX and off for RX.
Apr 18 10:30:24 kernel: tg3: eth0: Link is down.
etc...
The interval for which it happens is about order of few minutes.The
kernel it is running now is 2.6.18-128.1.6.el5. Can anybody help.
Have you tried running with the old kernel from before the update to verify that it doesn't occur with that version?
It is possible that the update is just a coincidence and you are actually facing link problems due to the card, the
cable, the switch or any of the connections between...
d
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