graph "2x2" {
	layout="neato";
	overlap="false";
	esep="+20";

        node [shape=record, fontname="monospace"];
	edge [color="cornflowerblue", penwidth="2"];

	host [
	    label="host | { <mgmt1> mgmt1 | <data1> data1 | <mgmt2> mgmt2 | <data2> data2 }",
	    pos="0,12!",
	    kind="controller",
	];

        target1 [
	    label="{ <mgmt> mgmt | <data> data | <target2> target2} | target1",
	    pos="10,18!",

	    kind="infix",
	];
	target2 [
	    label="{ <target1> target1 |<mgmt> mgmt | <data> data  } | target2",
	    pos="10,6!",

	    kind="infix",
	];
	host:mgmt1 -- target1:mgmt [kind=mgmt]
        host:mgmt2 -- target2:mgmt [kind=mgmt]
	host:data1 -- target1:data
	host:data2 -- target2:data
	target1:target2 -- target2:target1
}