Resolve L2SDP-878

Closes L2SDP-878

boards/uniboard2c/designs/unb2c_test/revisions/unb2c_test_1GbE_I/tb_unb2c_test_1GbE_I.vhd

@@ -40,7 +40,7 @@
 -- > tc_unb2_test_eth_sim_stop.sh
 -- or use python script:
 -- . use -n 10000 packets/s to have 1 packet per BG sync interval of 100 us in sim
--- > tc_unb2_test_eth.py --gn2 0 --stream 0 -n 10000 --dest loopback --range 1000,1001,1 --interval 100 --scheme tx --sim
+-- > tc_unb2_test_eth.py --gn2 0 --stream 0 --dest loopback -r 10000 --sizes 1000 --interval 100 --scheme tx_rx --sim
 -- stop simulation.
 LIBRARY IEEE;
 USE IEEE.std_logic_1164.ALL;