anchor.diff:  .Verify md5
   [source,bash]
   ----
  -$md5sum md5sum MLNX_OFED_LINUX-3.4-2.0.0.0-rhel7.2-x86_64.tgz
  -58b9fb369d7c62cedbc855661a89a9fd  MLNX_OFED_LINUX-3.4-2.0.0.0-rhel7.2-x86_64.tgz
  +$md5sum md5sum MLNX_OFED_LINUX-4.0.0.0.0-rhel7.2-x86_64.tgz
  +58b9fb369d7c62cedbc855661a89a9fd  MLNX_OFED_LINUX-4.0-xx.0.0.0-rhel7.2-x86_64.tgz
   ----
   
   .Open the tar
   [source,bash]
   ----
  -$tar -xvzf MLNX_OFED_LINUX-3.4-2.0.0.0-rhel7.2-x86_64.tgz
  -$cd MLNX_OFED_LINUX-3.4-2.0.0.0-rhel7.2-x86_64
  +$tar -xvzf MLNX_OFED_LINUX-4.0-x.0.0.0-rhel7.2-x86_64.tgz
  +$cd MLNX_OFED_LINUX-4.0-x.0.0.0-rhel7.2-x86_64
   ----
   
   .Run Install script
  
positive.code: ==== Performance
  See the performance tests we did link:trex_vm_bench.html[here]
  
  === Mellanox ConnectX-4 support 
  
  anchor:connectx_support[]
  
  Mellanox ConnectX-4 adapter family supports 100/56/40/25/10 Gb/s Ethernet speeds. 
  Its DPDK support is a bit different from Intel DPDK support, more information can be found link:http://dpdk.org/doc/guides/nics/mlx5.html[here].
  Intel NICs do not require additional kernel drivers (except for igb_uio which is already supported in most distributions). ConnectX-4 works on top of Infiniband API (verbs) and requires special kernel modules/user space libs. 
  This means that it is required to install OFED package to be able to work with this NIC.
  
negative.code: 
  Information was taken from  link:http://www.mellanox.com/page/products_dyn?product_family=26&mtag=linux_sw_drivers[Install OFED]
  
  * Download 4.0 OFED tar for your distro  
  
  [IMPORTANT]
  =====================================
  The version must be *MLNX_OFED_LINUX-4.0* or higher (4.0.x)
  =====================================
  
  [IMPORTANT]
  