# start topology , 2 Transponders Openconfig and 2 multi granular Roadms : 

sudo ./start_topo.sh

# populate tfs context in (pushing the json files) following the file index , i.e : 1 , 2 
# last json is with ID 7 is the service , to check the service is onboarded successfully go into the srevice interface 
# of tfs webGui 
# to check if the devices are configured , run 
screen -r tx with x = 1, 2,3 , 4
# to release the terminal , press ctrl + a + d