[openib-general] Re: IPoIB still not working [was IPoIB FAQ Update]

[Doug Ledford]

On Mon, 2004-12-06 at 07:09 -0500, Hal Rosenstock wrote:
> Hi Josh,
> 
> On Sun, 2004-12-05 at 23:02, Josh England wrote:
> 
> Your IPoIB configuration looks fine.

Well, he had identical hardware addresses on n0 and n1 for his ib0 and
ib1 interfaces respectively.  This would likely keep the linux network
stack from actually sending the packet back to the originating host and
instead convince it that it's intended for internal consumption I would
think.  Try putting a different HW MAC address on your different ib?
ports and see if that gets the packets flowing.

> > It seems now (new with 4.5.3 FW) that packets are flowing one direction 
> > but not the other.
> 
> It is possible there are still multicast ARP issues with PCIe with even
> the 4.5.3 firmware. There is apparently a pre 4.6 version which has a
> fix in it for this which some others have said they need in other (non
> OpenIB)environments. You will likely need to contact Mellanox to get
> this prerelease.
> 
> -- Hal
> 
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-- 
  Doug Ledford <dledford at redhat.com>
         Red Hat, Inc.
         1801 Varsity Dr.
         Raleigh, NC 27606