[eepro100] Re: Multicasting problem on shut down
Sat, 20 May 2000 13:10:12 -0400 (EDT)
On Fri, 12 May 2000, Javier Garces Asensio wrote:
> Date: Fri, 12 May 2000 10:06:37 +0200 (MET DST)
I had expected that someone else would have answered this by now.
> I've a Compaq with SuSe 6.1 running kernel 2.2.14 and the ethernet
> adpater has the i82558B chipset. Sometimes, when the linux box is halted,
> the ethernet adapter starts transmiting multicast packets to the
> destination 01:80:C2:00:00:01. This packet affects to a lot of PC's of my
> network, all with intel ethernet adapters. These PC's lose all
> communications. I can't repeat the problem on a known way but sometimes
> it occurs.
These are 802.1X flow control packets.
The behavior you are seeing occurs because of a bug in the intel chip.
The chip is supposed to handle the autonegotiation of flow control itself.
Pointedly, flow should not be enabled on a half duplex link, and yet the.
> I would like to know if the solution is the modified driver
> eepro100.c in ftp.//cesdis.gsfc.nasa.gov/pub/linux/drivers/test/eepro100.c
> and if the problem is the adapter's firmware or the driver to claim a new
> ethernet adapter to the vendor if the problem is the firmware of
> the adapter.
The fix is in the updated driver
> If it's possible, I would like to repeat the problem on a known
> and easy way to verify if the problem's removed
1. Put the machine on a repeater, perhaps with another machine running
2. Start the machine and activate the interface.
3. Shut down without powering off the machine.
4 Watch for flow control packets.
Donald Becker firstname.lastname@example.org
Scyld Computing Corporation
410 Severn Ave. Suite 210
Annapolis MD 21403