[gpfsug-discuss] more than one mlx connectx-4 adapter in same host

J. Eric Wonderley eric.wonderley at vt.edu
Wed Dec 20 20:37:09 GMT 2017


Just plain tcpip.

We have dual port connectx4s in our nsd servers.  Upon adding a second
connectx4 hba...no links go up or show "up".  I have one port on each hba
configured for eth and ibv_devinfo looks sane.

I cannot find anything indicating that this should not work.  I have a
ticket opened with mellanox.

On Wed, Dec 20, 2017 at 3:25 PM, Knister, Aaron S. (GSFC-606.2)[COMPUTER
SCIENCE CORP] <aaron.s.knister at nasa.gov> wrote:

>
>
> We’ve done a fair amount of VPI work but admittedly not with connectx4. Is
> it possible the cards are trying to talk IB rather than Eth? I figured
> you’re Ethernet based because of the mention of Juniper.
>
> Are you attempting to do RoCE or just plain TCP/IP?
>
>
> On December 20, 2017 at 14:40:48 EST, J. Eric Wonderley <
> eric.wonderley at vt.edu> wrote:
>
> Hello:
>
> Does anyone have this type of config?
>
> The host configuration looks sane but we seem to observe link-down on all
> mlx adapters no matter what we do.
>
> Big picture is that we are attempting to do mc(multichassis)-lags to a
> core switch.  I'm somewhat fearful as to how this is implemented in the
> juniper switch we are about to test.
>
>
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>
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