<scenario>
    <at t="5">
        <tell module="lifecycleController" target="router1" operation="NodeShutdownOperation"/>
    </at>
    <at t="10">
        <tell module="lifecycleController" target="router1" operation="NodeStartOperation"/>
    </at>
    <at t="15">
        <tell module="lifecycleController" target="router3" operation="NodeShutdownOperation"/>
    </at>
    <at t="20">
        <tell module="lifecycleController" target="router3" operation="NodeStartOperation"/>
    </at>
</scenario>