<!-- host2 -->
<servers>

        <server name="server-one" group="Group1">

            <socket-bindings port-offset="100"/>
        </server>
        <server name="server-two" group="Group2">

            <socket-bindings port-offset="200"/>
        </server>
    </servers>

<!-- host3 -->

<servers>

        <server name="server-three" group="Group1">

            <socket-bindings port-offset="300"/>
        </server>
        <server name="server-four" group="Group2">

            <socket-bindings port-offset="400"/>
        </server>
    </servers>