| simp destroy ".*" | 
 | simp create -o sw1:rocker:sw1 tut tut.dot | 
 | simp start tut | 
 | while ! simp ssh tut sw1 --cmd "ping -c 1 localhost >/dev/null"; do sleep 1; done | 
 | while ! simp ssh tut h1 --cmd "ping -c 1 localhost >/dev/null"; do sleep 1; done | 
 | while ! simp ssh tut h2 --cmd "ping -c 1 localhost >/dev/null"; do sleep 1; done | 
 |  | 
 | # bring up DUT ports | 
 |  | 
 | simp ssh tut sw1 --cmd "sudo ifconfig sw1p1 11.0.0.1/24" | 
 | simp ssh tut sw1 --cmd "sudo ifconfig sw1p2 12.0.0.1/24" | 
 |  | 
 | # config IP on hosts | 
 |  | 
 | simp ssh tut h1 --cmd "sudo ifconfig sw1p1 11.0.0.2/24" | 
 | simp ssh tut h2 --cmd "sudo ifconfig sw1p1 12.0.0.2/24" | 
 |  | 
 | # test... | 
 |  | 
 | simp ssh tut h1 --cmd "ping -c10 11.0.0.1 >/dev/null" | 
 | if [ $? -eq 1 ]; then exit 1; fi | 
 | simp ssh tut h2 --cmd "ping -c10 12.0.0.1 >/dev/null" |