digraph G {
	rankdir=TB;
	labelloc=t;
	label="gtplab @ sysmocom";

	subgraph cluster_gtplab2 {
		label="TRex (gtplab2)";
	trex [label="TRex",shape=box3d];
		gtplab2_172_32  [label="172.16.32.{2-101}/24"];
	gtplab2_172_31  [label="172.16.31.{100-200}/24"];
	}
	subgraph cluster_switch {
		label="Switch (100gb)";
		switch_vlan1  [label="vlan1"];
		switch_vlan2  [label="vlan2"];
	}
	subgraph cluster_gtplab1 {
		label="UPF (gtplab1)";
		gtplab1_172_31  [label="172.16.31.2/24"];
		gtplab1_172_32  [label="172.16.32.1/24"];

		upf [label="UPF\ntunend",shape=box3d];
	}
	subgraph cluster_gtplab0 {
		label="CPF (gtplab0)";
		rankdir=TB;
		gtplab0_172_31  [label="172.16.31.1/24"];
		pfcp_tool [label="osmo-udp-load-gen",shape=box3d];
	}


	pfcp_tool -> gtplab0_172_31 -> switch_vlan1 -> gtplab1_172_31 -> upf [label="PFCP",dir=both,style=dashed,color=black];

	trex -> gtplab2_172_32 -> switch_vlan2 -> gtplab1_172_32 -> upf [label="GTPU UL (RAN)",style=bold, color=red];
	upf -> gtplab1_172_31 -> switch_vlan1 -> gtplab2_172_31 -> trex [label="IP UL (CN)",style=bold, color=purple];

	trex -> gtplab2_172_31 -> switch_vlan1 -> gtplab1_172_31 -> upf [label="IP DL (CN)",style=bold,color=blue];
	upf -> gtplab1_172_32 -> switch_vlan2 -> gtplab2_172_32 -> trex [label="GTPU DL (RAN)",style=bold,color=darkgreen];

}