<cluster-topology>
    <network-switch name="switch1">
        <network-switch name="switch2">
            <terminal name="nc0"/>
            <terminal name="nc3"/>
        </network-switch>
        <network-switch name="switch3">
            <terminal name="nc1"/>
            <terminal name="nc4"/>
        </network-switch>
    </network-switch>
</cluster-topology>