anchor.diff:  [options="header",cols="2,1,1,1",width="90%"]
   |=================
   | link:https://en.wikipedia.org/wiki/Small_form-factor_pluggable_transceiver[SFP+]  | Intel Ethernet Converged X710-DAX |  Silicom link:http://www.silicom-usa.com/PE310G4i71L_Quad_Port_Fiber_SFP+_10_Gigabit_Ethernet_PCI_Express_Server_Adapter_49[PE310G4i71L] (Open optic) | 82599EB 10-Gigabit
  -| link:http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/data_sheet_c78-455693.html[Cisco SFP-10G-SR] | Does not work     | [green]*works* | [green]*works*
  -| link:http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/data_sheet_c78-455693.html[Cisco SFP-10G-LR] | Does not work     | [green]*works* | [green]*works*
  -| link:http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/data_sheet_c78-455693.html[Cisco SFP-H10GB-CU1M]| [green]*works* | [green]*works* | [green]*works*
  -| link:http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/data_sheet_c78-455693.html[Cisco SFP-10G-AOC1M] | [green]*works* | [green]*works* | [green]*works*
  +| link:http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/data_sheet_c78-455693.html[Cisco SFP-10G-SR] | Not supported  | [green]*Supported* | [green]*Supported*
  +| link:http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/data_sheet_c78-455693.html[Cisco SFP-10G-LR] | Not supported     | [green]*Supported* | [green]*Supported*
  +| link:http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/data_sheet_c78-455693.html[Cisco SFP-H10GB-CU1M]| [green]*Supported* | [green]*Supported* | [green]*Supported*
  +| link:http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/transceiver-modules/data_sheet_c78-455693.html[Cisco SFP-10G-AOC1M] | [green]*Supported* | [green]*Supported* | [green]*Supported*
   |=================
   
   [NOTE]
   =====================================
  - Intel X710 NIC (example: FH X710DA4FHBLK) operates *only* with Intel SFP+. For open optic, use the link:http://www.silicom-usa.com/PE310G4i71L_Quad_Port_Fiber_SFP+_10_Gigabit_Ethernet_PCI_Express_Server_Adapter_49[Silicom PE310G4i71L] NIC.
  + Intel X710 NIC (example: FH X710DA4FHBLK) operates *only* with Intel SFP+. For open optic, use the Silicom PE310G4i71L NIC, available here:
  + http://www.silicom-usa.com/PE310G4i71L_Quad_Port_Fiber_SFP+_10_Gigabit_Ethernet_PCI_Express_Server_Adapter_49
   =====================================
  +// it appears that link:<link> doesn't work in a note, so i changed the wording
   
   // clarify above table and note
   
   .XL710 NIC base QSFP+ support 
   [options="header",cols="1,1,1",width="90%"]
   |=================
  -| link:https://en.wikipedia.org/wiki/QSFP[QSFP+]             |  Intel Ethernet Converged XL710-QDAX | Silicom link:http://www.silicom-usa.com/Dual_Port_Fiber_40_Gigabit_Ethernet_PCI_Express_Server_Adapter_PE340G2Qi71_83[PE340G2Qi71] Open optic 
  -| QSFP+ SR4 optics  |  APPROVED OPTICS [green]*works*,  Cisco QSFP-40G-SR4-S does *not* work   | Cisco QSFP-40G-SR4-S [green]*works* 
  -| QSFP+ LR-4 Optics |   APPROVED OPTICS [green]*works*, Cisco QSFP-40G-LR4-S does *not* work   | Cisco QSFP-40G-LR4-S [green]*works* 
  -| QSFP Active Optical Cables (AoC) | Cisco QSFP-H40G-AOC [green]*works*  | Cisco QSFP-H40G-AOC [green]*works* 
  -| QSFP+ Intel Ethernet Modular Optics |    N/A            |  N/A
  -| QSFP+ DA twin-ax cables | N/A  | N/A  
  -| Active QSFP+ Copper Cables | Cisco QSFP-4SFP10G-CU [green]*works*  | Cisco QSFP-4SFP10G-CU [green]*works*
  +| link:https://en.wikipedia.org/wiki/QSFP[QSFP+]             | Intel Ethernet Converged XL710-QDAX                                          | Silicom link:http://www.silicom-usa.com/Dual_Port_Fiber_40_Gigabit_Ethernet_PCI_Express_Server_Adapter_PE340G2Qi71_83[PE340G2Qi71] Open optic 
  +| QSFP+ SR4 optics                                           | [green]*Supported*: APPROVED OPTICS. *Not supported*: Cisco QSFP-40G-SR4-S   | [green]*Supported*: Cisco QSFP-40G-SR4-S  
  +| QSFP+ LR-4 Optics                                          | [green]*Supported*: APPROVED OPTICS. *Not supported*: Cisco QSFP-40G-LR4-S   | [green]*Supported*: Cisco QSFP-40G-LR4-S 
  +| QSFP Active Optical Cables (AoC)                           | [green]*Supported*: Cisco QSFP-H40G-AOC                                      | [green]*Supported*: Cisco QSFP-H40G-AOC  
  +| QSFP+ Intel Ethernet Modular Supported                     | N/A                                                                          | N/A
  +| QSFP+ DA twin-ax cables                                    | N/A                                                                          | N/A  
  +| Active QSFP+ Copper Cables                                 | [green]*Supported*: Cisco QSFP-4SFP10G-CU                                    | [green]*Supported*: Cisco QSFP-4SFP10G-CU
   |=================
   
   [NOTE]
  
positive.code: 
  
  
  === Configuration YAML (parameter of --cfg option)
  
  anchor:trex_config[]
  
  The configuration file, in YAML format, configures TRex behavior, including:
   
  
negative.code: 
  Use `lspci` to verify the NIC installation. 
  
  Example: 4x 10Gb/sec TRex configuration (see output below):
  
  * I350 management port
  
  