Hi,
Does it work to run switchless ethernet between two ConnectX-3 cards using a regular QSFP cable ?
My plan is to use my dual-port cards with one IB port connected to an IB switch, and one ethernet port directly connected between the servers. I have added "options mlx4_core port_type_array=1,2" to a modprobe.d file on both servers.
If I boot the servers without the cable attached, one server reports ethernet as the link layer, and the other reports infiniband as the link layer. If I connect the cable, both servers report Infiniband as link layer.
I´m suspecting driver issues here, the server that always reports Infiniband is an older Opensuse 12.2 installation, while the other one is an Ubuntu 15.04 with a significantly newer mlx4 driver.
I just would like to confirm that it is actually possible to do a back-to-back connection with these cards when the port is set to ethernet as the link layer.
Does it work to run switchless ethernet between two ConnectX-3 cards using a regular QSFP cable ?
My plan is to use my dual-port cards with one IB port connected to an IB switch, and one ethernet port directly connected between the servers. I have added "options mlx4_core port_type_array=1,2" to a modprobe.d file on both servers.
If I boot the servers without the cable attached, one server reports ethernet as the link layer, and the other reports infiniband as the link layer. If I connect the cable, both servers report Infiniband as link layer.
I´m suspecting driver issues here, the server that always reports Infiniband is an older Opensuse 12.2 installation, while the other one is an Ubuntu 15.04 with a significantly newer mlx4 driver.
I just would like to confirm that it is actually possible to do a back-to-back connection with these cards when the port is set to ethernet as the link layer.