+- Ver. 1 associated with CSIT rls1908 branch (`HW
+ <https://git.fd.io/csit/tree/docs/lab?h=rls1908>`_, `Linux
+ <https://docs.fd.io/csit/rls1908/report/vpp_performance_tests/test_environment.html#sut-settings-linux>`_,
+ `TRex
+ <https://docs.fd.io/csit/rls1908/report/vpp_performance_tests/test_environment.html#tg-settings-trex>`_,
+ `CSIT <https://git.fd.io/csit/tree/?h=rls1908>`_).
+- Ver. 2 associated with CSIT rls2001 branch (`HW
+ <https://git.fd.io/csit/tree/docs/lab?h=rls2001>`_, `Linux
+ <https://docs.fd.io/csit/rls2001/report/vpp_performance_tests/test_environment.html#sut-settings-linux>`_,
+ `TRex
+ <https://docs.fd.io/csit/rls2001/report/vpp_performance_tests/test_environment.html#tg-settings-trex>`_,
+ `CSIT <https://git.fd.io/csit/tree/?h=rls2001>`_).
+- Ver. 4 associated with CSIT rls2005 branch (`HW
+ <https://git.fd.io/csit/tree/docs/lab?h=rls2005>`_, `Linux
+ <https://docs.fd.io/csit/rls2005/report/vpp_performance_tests/test_environment.html#sut-settings-linux>`_,
+ `TRex
+ <https://docs.fd.io/csit/rls2005/report/vpp_performance_tests/test_environment.html#tg-settings-trex>`_,
+ `CSIT <https://git.fd.io/csit/tree/?h=rls2005>`_).
+- Ver. 5 associated with CSIT rls2009 branch (`HW
+ <https://git.fd.io/csit/tree/docs/lab?h=rls2009>`_, `Linux
+ <https://docs.fd.io/csit/rls2009/report/vpp_performance_tests/test_environment.html#sut-settings-linux>`_,
+ `TRex
+ <https://docs.fd.io/csit/rls2009/report/vpp_performance_tests/test_environment.html#tg-settings-trex>`_,
+ `CSIT <https://git.fd.io/csit/tree/?h=rls2009>`_).