[CentOS] tg3 network link unstable

Mon Jan 19 21:29:51 UTC 2015
Akemi Yagi <amyagi at gmail.com>

On Mon, Jan 19, 2015 at 9:10 AM, Leon Fauster
<leonfauster at googlemail.com> wrote:
> Full updated EL6: Does someone have the same behaviour, unstable eth interface (tg3/no dhcp)?
>
> Jan 19 18:01:46 ane kernel: tg3 0000:04:00.0: eth0: Link is up at 1000 Mbps, full duplex
> Jan 19 18:01:46 ane kernel: tg3 0000:04:00.0: eth0: Flow control is on for TX and on for RX

You were probably hit a bug described in this upstream article:

https://access.redhat.com/solutions/1302043

Check to see if the tg3 version is 3.137 (modinfo tg3). If so, one
workaround is to downgrade the tg3 driver.  Luckily, ELRepo's kmod-tg3
for EL6 is at 3.136. Install the kmod and see if this resolves the
issue.

Akemi