Re: Problems with IPMI and wm? sharing a physical Ethernet port

[Jarle Greipsland <jarle%uninett.no@localhost>]

Manuel Bouyer <bouyer%antioche.eu.org@localhost> writes:
> On Sun, Jun 24, 2012 at 07:58:19PM +0200, Jarle Greipsland wrote:
> > I recently installed NetBSD/amd64 -current on a system with a
> > SuperMicro main board (X7SPA-HF) with an Intel Atom D525 CPU.
> > The system has an integrated Baseboard Management Controller (not
> > an add-on module) that supports the IPMI protocol.  The services
> > of the BMC may be accessed from another computer over IP through
> > one of the on-board Ethernet ports (wm0 in NetBSD).  I have used
> > ipmitool from pkgsrc for this.  As long as NetBSD has not booted
> > yet (after power-on) this works fine.  Once NetBSD has booted, I
> > can no longer communicate with the BMC (although for some reason
> > it still seems to support ARPs).  As far as I can tell from the
> > documentation, the BMC and whatever host operating system is used
> > should be able to share the Ethernet port (on various web sites
> > this is called sideband mode).  The host Ethernet controller and
> > the BMC each have their own MAC addresses.  It's not clear to me
> > whether the board has some kind of switch hardware, or the two
> > Ethernet controllers just share the PHY hardware.
> 
> Do you have some media settings in ifconfig.wm0 ?
media autoselect

> On systems with ethernet shared by bmc, I avoid touching the interface
> from the system (there is usually a second ethernet port and I use this one).
> Now I request a separate ethernet port for management.
A bit tricky in this case, since I intend to use the box as a small
router/NAT-device.
                                        -jarle