[openib-general] Infiniband on Debian etch RC1

[Hal Rosenstock]

On Wed, 2006-11-22 at 04:06, Diego Guella wrote:
> From: "Hal Rosenstock"
> > Your configuration looks fine (SM is really on port 1). Not sure what is
> > going wrong (why your SM port drops (is this cable pull or system reboot
> > on remote side) or why IPoIB doesn't work for you.
> 
> I tried another Infiniband network configuration today.
> Machines:
> 1.Dell Dimension 9100 (further referred as D9100) with MS Windwos XP and 
> WinIB_x86_1_3_0_1347, MHES14 card
> 2.PE1950
> 3.PE2850 (with SM)
> 
> Each of these have a cable that connects port1 to an Infiniband switch.
> 
> I powered up the machines in the order in the list. (the switch was powered 
> up before all the machines)
> 
> With this network configuration, in the opensm log no more appears 'SM port 
> down', so maybe, as you said, a system reboot of the other machine brings 
> the port down temporarily.

In the back to back HCA mode it would as the switch would in this
configuration.

> I have been able to ping D9100 from PE1950 and PE1950 from D9100, but the 
> PE2850 were unreachable from neither PE1950 or D9100, until I "ifdown ib1" 
> (the interface without cable connected).
> 
> I don't know why there is such behaviour, it happens when there are 2 
> network devices on the same subnet, I already had this problem with ethernet 
> devices but it was disappeared.. and now is back with infiniband.
> 
> Do somebody know why it bevahes like that?

If this is annoying, I would suggest moving to OFED 1.1 and seeing if
things are better.

-- Hal

> Thanks for your help, finally I got IPoIB working :)
> Diego
> 
> 
> 
>