proc StopTrafficHlt {} {
    puts "\nStopTrafficHlt ..."
    set stopTrafficStatus [::ixia::traffic_control -action stop]
    if {[keylget stopTrafficStatus status] != $::SUCCESS} {
	puts "\nError StopTrafficHlt: $stopTrafficStatus\n"
	return 1
    } 
    after 5000
    return 0
}