+ <host id="host4" speed="1Gf"/>
+ <link id="l4_UP" bandwidth="125MBps" latency="100us"/>
+ <link id="l4_DOWN" bandwidth="125MBps" latency="100us"/>
+ <host_link id="host4" up="l4_UP" down="l4_DOWN"/>
+
+ <host id="host5" speed="1Gf"/>
+ <link id="l5" bandwidth="125MBps" latency="100us" sharing_policy="FULLDUPLEX"/>
+ <host_link id="host5" up="l5_UP" down="l5_DOWN"/>