Type TestBed {
  host {
  
  id = "HA"
   location = "PRAGUE"
   port {id = "p1"}
   port {id = "p2"}
   
   }
   
  host {
  
  id = "HB"
  location = "BRNO"
  port {id = "p1"}
  port {id = "p2"}

  }
 
  link {

  id = "L1"
  port {id = "src"}
  port {id = "dst"}

  }

  adjacency HA.p2,L1.src
  adjacency HB.p1,L1.dst


 //adjacency n1p1, HA.p1
 
 //adjacency n2p1, HB.p2