On Nov 14, 2006, at 12:20 PM, Damian Wiest wrote:

On Mon, Nov 13, 2006 at 03:03:55PM -0800, Joe wrote:
I have 2 of these adaptors
"Intel PRO/1000GT (82541GI)" rev 0x05

The 82541GI chipset is supported by em(4).

Every day, the box "drops" of the network. The interfaces show
themselves as active, but I can't ping, arp, or sniff any traffic. A
reboot solves the problem. Is anyone else having this problem?

For now, I had to remove the NICs because the box is a firewall and goes down at random times throughout the day. I didn't notice any particular
traffic patterns.

We've encountered similar problems in the past with that chip.  I
believe we resolved the issue by using a newer driver, but this was not
under OpenBSD.

Can you try a more recent version of the em(4) driver?  Some commits
were made very recently.

-Damian


FWIW I was having very similar problems with em(4) in OpenBSD 4.0- release under VMware (amd64 SMP). It would cease to recognize ARP replies and just flood the network with ARP requests endlessly. It was enough to bring VMware to it's knees and totally swamp my cheap switch.

I upgraded to -current from this morning's snapshot and the issue hasn't resurfaced yet...

Brian Keefer
www.Tumbleweed.com
"The Experts in Secure Internet Communication"

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