Hello,
We installed 2 Mellanox NIC on serverA and 2 of them on serverB.
Mellanox NIC info:
Model: MCX354A
PSID: MT_1090110019
Driver: mlx4_en
version: 2.2-1.0.1 (Jun 13 2014)
firmware-version: 2.31.5050
ServerA-B:
-Dell poweredge R720xd
-CPU: 32 CPU each 2.9 GHz (Sandy Bridge): Numa0: 0-2-4-...30,
Numa1:1-3-...-31
-6 slot PCIe 8GT/s (16 lane)
-RAM: 128 GB DDR3
-OS: ubuntu 12.04 LTS (Kernel: 3.11.0.22)
-four Intel SFP+ cards with ixgbe driver
We are going to test breakout cable (40G QSFP+ to 4x10G SFP+), in the following configuration:
-1Mellanox NIC (FCBT) in serverA is connected to 4 intel NIC (SFP+) in server B, using a breakout cable.
But when we connect the breakout cable, just one 10G SFP+ is working from total of four, and 3x10G SFP+ is off (no light). We then generate the traffic, it is normal that just 10G traffic was passed.
I think that this is due to the fact that Mellanox NIC is configured for 40G.
My question is how can i configure Mellanox to recognize 4x10G configuration for breakout scheme?
We tested this issue using Cisco switch configured to 4x10G SFP+ both breakout cable and switch ports were active and working.
Thanks for your support
Mohammad